B40 TRM

GE Healthcare
ProCare B40/B20 Patient Monitor

Technical Reference Manual

English
2050802-001 A4 (Paper)
© 2010 General Electric Company.
All Rights Reserved.
Technical Reference Manual
0459
Conformity according to the Council Directive 93/42/EEC concerning Medical Devices
All specifications subject to change without notice.
Order code 2050802-001
Revision A4
18 January, 2011
GE Medical Systems Information Technologies, Inc. GE Healthcare

8200 West Tower Avenue 3F Building 1, GE Technology Park
Milwaukee, WI USA 1 Huatuo Road
Zip: 53223
Shanghai PRC 201203
Tel: 1 414 355 5000 (outside US)
800 558 5102 (US only) Tel: +86 21 3877 7888
Fax: 1 414 355 3790 Fax: +86 21 3877 7451
www.gehealthcare.com
Copyright © 2011 General Electric Company. All rights reserved.
Classifications
In accordance with IEC 60601-1
− Class I and internally powered equipment - the type of protection against electric shock.
− Type BF or CF equipment. The degree of protection against electric shock is indicated by
a symbol on each parameter module.
− Equipment is not suitable for use in the presence of a flammable anesthetic mixture with
air or with oxygen or nitrous oxide.
− Continuous operation according to the mode of operation.
− Portable Monitor
In accordance with IEC 60529
− IP21 - degree of protection against harmful ingress of water.
In accordance with EU Medical Device Directive
− IIb.
In accordance with CISPR 11:
− Group 1 Class A;
• Group 1 contains all ISM (Industrial, scientific and medical) equipment in which there
is intentionally generated and/or used conductively coupled radio-frequency
energy which is necessary for the internal functioning of the equipment itself.
• Class A equipment is equipment suitable for use in all establishments other than
domestic and those directly connected to a low-voltage power supply network
which supplies buildings used for domestic purposes.
Trademarks
Dash, ProCare, DINAMAP, EK-Pro, Trim Knob, Unity Network, Datex, Ohmeda, S/5, D-fend,
D-fend+, Mini D-fend, OxyTip+, EarSat, FingerSat, FlexSat are trademarks of GE Healthcare. All
other product and company names are property of their respective owners.
1 Introduction
About this manual 1
1 Overview 3
1.1 Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Safety information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.2.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.2.2 Safety message signal words. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.2.3 Safety precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.2.4 ESD precautionary procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.2.5 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2 System description 11
2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.2 Bus structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.3 Distributed processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.4 Module communication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.5 Software loading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.6 Parameter modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3 Frame functional description 14
3.1 Main components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.1.1 Keyboards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.1.2 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.1.3 CPU board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.1.4 Power board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.1.5 AC/DC unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.1.6 Batteries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.2 Interfacing computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.3 Connectors and signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.3.1 External connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4 Hemo-dynamic module introduction 23
4.1 Monitor software compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.2 Main components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.2.1 Hemo-dynamic module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.2.2 NIBP board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.2.3 ECG board in 5-lead measurement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.2.4 ECG filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4.2.5 STP board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.2.6 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
4.3.1 Front panel connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.4 Measurement principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
4.4.1 NIBP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
4.4.2 ECG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
4.4.3 Pulse oximetry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
4.4.4 Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
4.4.5 Invasive blood pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
4.4.6 Respiration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
i
Document no. 2050802-001
B40/B20 Patient Monitor
2 Installation
1 System installation 1
1.1 Unpacking instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Choosing location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.3 Mounting the monitor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.4 Connection to mains. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.4.1 Install the batteries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.5 Connection to Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.5.1 Pre-installation requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.5.2 Network configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.6 Inserting and removing the E-miniC module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.7 Monitor connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.8 Visual indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.9 Functional check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3 Maintenance
1 Instructions 1
1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Recommended tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2 Electrical Safety Tests 3
2.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2 Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.3 Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.4 Power Outlet Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.5 Power cord and plug. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.6 Ground (Earth) Integrity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.6.1 Ground Continuity Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.6.2 Impedance of Protective Earth Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.7 Ground (earth) wire leakage current tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.8 Enclosure (Touch) leakage current test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.9 Patient (source) leakage current test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.10 Patient (sink) leakage current test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.11 Test completion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3 Installation checkout 13
3.1 Visual inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.2 Functional inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.2.1 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.2.2 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.2.3 Keyboard(s). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.2.4 Frame unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.2.5 E-minC module with CO2 measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.2.6 Multiparameter Hemodynamic Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.2.7 Recorder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.2.8 Network connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.2.9 Final. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4 Maintenance and checkout 17
4.1 Visual inspection/preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
ii
4.1.1 Before beginning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.1.2 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.2 Functional inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.2.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.2.2 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.2.3 Keyboard(s). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.2.4 Time and date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.2.5 Hemo Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.2.6 Loudspeaker. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.2.7 Monitor software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.2.8 Watchdog circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.2.9 Batteries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.2.10 Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.2.11 Final cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5 Adjustments and calibrations 24
5.1 NIBP calibrations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.2 Temperature calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.3 Invasive pressure calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4 Troubleshooting
1 Introduction 1
1.1 General troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.2 Software troubleshooting chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Frame troubleshooting 4
2.1 NET section troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Hemo Troubleshooting 7
3.1 Troubleshooting flowcharts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2 NIBP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2.1 NIBP toubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2.2 NIBP error code explanation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.3 ECG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.4 Impedance respiration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.5 Pulse oximetry (SpO2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.6 Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.7 Invasive blood pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5 Service Menu
1 Introduction 1
1.1 Service Menu structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Service Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2 Frame 3
2.1 SW Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1.1 SW Download. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1.2 Country Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2 UMBC Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
iii
2.3 Memory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.4 Network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.4.1 Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.4.2 Dri Config (in S/5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.4.3 Dri Comm (in S/5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.4.4 Unity Config (in Unity) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.4.5 TCP/IP Config . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.4.6 WLAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.5 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.5.1 WPM Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3 Keyboard 16
3.1 Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.1.1 Keyboard Log. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4 Parameters 17
4.1 Gas Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.1.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.1.2 Gases. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.2 ECG Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.2.1 ECG Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.3 STP Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.3.1 Calibrations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.4 NIBP Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.4.1 NIBP Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.4.2 NIBP Safety Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4.4.3 NIBP Pneumatics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.5 SpO2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5 Set/Test 31
6 Service Log 32
6 Field replaceable unit

1 Frame spare part 1
1.1 Front cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Back cover unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.3 Frame. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.4 Others . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2 Module spare part 5
2.1 Extension rack. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Hemo box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Frame disassembly 7
3.1 Before disassembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2 Tools needed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.3 Handling and storage of LCD display component . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.4 Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.4.1 Battery indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.4.2 To check the battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.4.3 Conditioning the batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.5 To replace the fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
iv
3.6 To download the software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4 Module disassembly 21
4.1 Before disassembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.2 Tools needed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.3 To disassemble the hemo module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.4 To disassemble the extended rack and the recorder. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
7 Technical specification
1 General Specifications 1
1.1 Genenral specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Defibrillator synchronization connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2 Parameters specifications 3
2.1 ECG specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2 Impedance respiration specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.3 GE SpO2 specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.4 Nellcor SpO2 specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.5 Masimo SpO2 specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.6 NIBP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.7 Invasive blood pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.8 Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.9 Airway gases. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
8 E-MiniC Module
1 Introduction 1
2 Specifications 2
2.1 General specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.1.1 Environmental specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.1.2 Functional alarms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.2 CO2 measurement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.2.1 Typical performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.2.2 Technical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.2.3 Normal conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2.4 Conditions exceeding normal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.3 Respiration Rate (RR). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Functional description 5
3.1 Measurement principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1.1 CO2 measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.2 Main components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.2.1 Gas sampling system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.2.2 MiniC measuring unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2.3 CPU board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4 Service procedures 11
4.1 General service information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
v
4.1.1 MiniC measuring unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.2 Service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.2.1 Recommended tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.2.2 Recommended parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.2.3 Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5 E-MiniC module disassembly and reassembly 16
5.0.1 Before disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.0.2 Tools needed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.1 To disassemble the module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.1.1 Pump unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.1.2 MiniCO2 assy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.1.3 Instructions after replacing MiniCO2 assy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.2 Adjustments and calibrations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.2.1 Calibrating. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.2.2 Gas sampling system adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.2.3 Flow rate measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.2.4 Flow rate adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.2.5 Gas calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6 Troubleshooting 22
6.1 Troubleshooting chart for CO2 measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.1.1 CO2 measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6.2 Gas sampling system troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6.2.1 Sampling system leak test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6.3 MiniC unit troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6.4 Error messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Appendix A: Software download instruction A-1

Appendix B: ElectroMagnetic Compatibility B-1
Appendix C: Installation and checkout form, B40/B20 C-1
Appendix D: Maintenance and checkout form, B40/B20 D-1
Appendix E: Service check form, Single-width Airway Module E-miniC E-1
vi
1 Introduction
About this manual
Intended purpose of this device (Indications for use)

This device is a portable multiparameter unit to be used for monitoring and recording of, and to
generate alarms for, multiple physiological parameters of adult, pediatric, and neonatal
patients in a hospital environment and during intra-hospital transport. The B40/B20 Patient
Monitor is intended for use under the direct supervision of a licensed health care practitioner.
The B40/B20 Patient Monior is not intended for use during MRI.
The B40/B20 Patient Monior monitors and displays oscillometric non-invasive blood pressure
(systolic, diastolic and mean arterial pressure), invasive blood pressure, end-tidal carbon
dioxide, heart/pulse rate, respiration rate, ECG (including arrhythmia and ST segment analysis),
temperature with a reusable or disposable electronic thermometer for continual monitoring
Esophageal/Nasopharyngeal/Tympanic/Rectal/Bladder/Axillary/Skin/Airway/Room/Myocardi
al/Core/Surface temperature, and functional oxygen saturation (SpO2) and pulse rate via
continuous monitoring, including monitoring during conditions of clinical patient motion or low
perfusion.
Intended audience
This Technical reference manual is meant for service representatives and technical personnel
who install, configure, maintain, administer, troubleshoot or repair B40/B20 monitor running
the software license VSP-A.
Notes to the reader

As the monitor setup may vary, some functions described may not be available in the monitor
you are using.
• The order code for the manual is 2050802-001.
• Read the manual through and make sure that you understand the procedures described
before the installation of the monitor. To avoid risks concerning safety or health, strictly
observe the warning indications. If you need any assistance concerning the installation,
please do not hesitate to contact your authorized distributor.
Installation without network are allowed by customer. The network installation and service are
allowed by authorized service personnel only.
GE Healthcare assumes no responsibility for the use or reliability of its software in equipment
that is not furnished by GE.
Responsibility of the manufacturer

GE Medical Systems Information Technologies, Inc. (GE) is responsible for the effects on safety,
reliability and performance of the equipment only if:
− Assembly operations, extensions, readjustments, modifications, or repairs are carried out
by persons authorized by GE.
− The electrical installation of the relevant room complies with the requirements of the
appropriate regulations.
− The equipment is used in accordance with the “User's Guide.”
− The equipment is installed, maintained and serviced in accordance with this manual.
1-1

Product availability
Some of the product parts and accessories mentioned in this manual may not be available in
all countries.
Please, consult your local representative for the availability.
Related documentation
− Clinical aspects, basic methods of measurement and technical background: B40/B20
Patient Monitor User’s Reference Manual
− Installation, technical solutions and servicing: B40/B20 Patient Monitor Technical
Reference Manual
− Options and selections of the software: B40/B20 Patient Monitor Default Configuration
Worksheet
− Compatible supplies and accessories: B40/B20 Patient Monitor Supplies and Accessories
− Other devices closely related to the monitor:
• iCentral and iCentral Client User's Reference Manual
• CIC Pro Clinical Information Center Operator's Manual
Conventions used
To help you find and interpret information easily, the manual uses consistent text formats:
" Sign the check form after performing the procedure.
Within this manual, special styles and formats are used to distinguish between terms viewed
on screen, a button you must press, or a list of menu commands you must select:
− Names of hardware keys on the keypad are written in bold typeface: NIBP
Start/Cancel.
− Menu items are written in bold italic typeface: Monitor Setup.
− Emphasized text is in italic typeface.
− When referring to different sections in this manual, section names are enclosed in double
quotes: “Cleaning and care”.
− The word “select” means choosing and confirming.
− Messages (alarm messages, informative messages) displayed on the screen are written
inside single quotes: 'Learning.'
− Note statements provide application tips or other useful information.
Illustrations and names

All illustrations in this manual are only examples, and may not necessarily reflect your system
settings or data displayed in your system. If a particular selection is not available in your
system, the selection is shown grayed.
1-2

Overview
1 Overview
The B40/B20 is a modular multiparameter patient monitor. The monitor is especially designed
for monitoring in intensive care units. It can also be used during transportation within the
hospital.
The modular design makes the system flexible and easy to upgrade.
NOTE: Your system may not include all these components. Consult your local representative
for the available components.
Figure 1 B40/B20 monitor with hemo and extension rack modules
1-3

1.1 Symbols
- On the rear panel this symbol indicates the following warnings

and cautions:
- Electric shock hazard. Do not open the cover or the back.
Refer servicing to qualified personnel.
- For continued protection against fire hazard, replace the fuse
only with one of the same type and rating.
- Disconnect from the power supply before servicing.
- Do not touch the monitor during defibrillation.
- Do not use the monitor without manufacturer approved
mounting attached.
Electrostatic sensitive device. Connections should not be made to
this device unless ESD precautionary procedures are followed.
Type BF (IEC 60601-1) protection against electric shock. Isolated

(floating) applied part suitable for intentional external and internal
application to the patient, excluding direct cardiac application.
Type BF (IEC 60601-1) defibrillator-proof protection against electric
shock. Isolated (floating) applied part suitable for intentional
external and internal application to the patient, excluding direct
cardiac application.
Type CF (IEC 60601-1) protection against electric shock. Isolated
(floating) applied part suitable for intentional external and internal
application to the patient, including direct cardiac application.
Type CF (IEC 60601-1) defibrillator-proof protection against electric
shock. Isolated (floating) applied part suitable for intentional
external and internal application to the patient including direct
cardiac application.
When displayed in the upper left corner of the screen, indicates that
the audio OFF. When displayed in the menu or digit fields, indicates
that the alarm source has been turned off or alarm does not meet
the alarm-specific activation criteria.
In the front panel: battery
Equipotentiality. Monitor can be connected to potential equalization

conductor.
Alternating current
Bell cancel. Audio pause.
1-4

Overview
Home. Return to the main display.
Standby or power indicator.
Fuse. Replace the fuse only with one of the same type and rating
Gas inlet.
Gas outlet.
IP21
Degree of ingress protection.
SN,S/N Serial number
Date of manufacture. This symbol indicates the date of
manufacture of this device. The four digits identify the year.
Maunfacturer: This symbol indicates the name and the address of

the manufacturer.
European authorized representative.
European Union Declaration of Conformity.
Prescriptive Device. USA only. For use by or on the order of a

Rx Only U.S.
Physician, or persons licensed by state law.
Fragile. Handle with care.
Keep dry. Protect from rain.
This way up.
Storage temperature
This symbol depicts the transportation and storage atmospheric

pressure range of 700 to 1060 hPa
1-5

Recycled materials or may be recycled.
This symbol indicates that the waste of electrical and electronic

equipment must not be disposed as unsorted municipal waste and
must be collected separately. Please, contact an authorized
representative of the manufacturer for information concerning the
decommissioning of your equipment.
The separate collection symbol is affixed to a battery, or its

packaging, to advise you that the battery must be recycled or
disposed of in accordance with local or country laws. To minimize
potential effects on the environment and human health, it is
important that all marked batteries that you remove from the
product are properly recycled or disposed. For information on how
the battery may be safely removed from the device, please consult
the service manual or equipment instructions. Information on the
potential effects on the environment and human health of the
substances used in batteries is available at this url:
http://www.gehealthcare.com/euen/weee-recycling/index.html
This product consists of devices that may contain mercury, which
must be recycled or disposed of in accordance with local, state, or
country laws. (Within this system, the backlight lamps in the
monitor display contain
Battery operation and remaining capacity. The height of the green
A
B B bar indicates the charging level.
Battery (A) charging (white bar)
Battery (A) failure

B
Both batteries failed
Battery (A) missing
Submenu. Selecting a menu item with this symbol opens a new

menu.
1-6

Overview
The monitor is connected to Network.
A blinking heart next to the heart rate or pulse rate value indicates
the beats detected.
A lung next to the respiration rate value indicates that respiration

rate is calculated from the impedance respiration measurement.
1-7

1.2 Safety information

1.2.1 General
This device is intended for use under the direct supervision of a licensed health care
practitioner.
Contact GE for information before connecting any devices to the equipment that are not
recommended in this manual.
Parts and accessories used must meet the requirements of the applicable IEC 601 series safety
standards, and/or the system configuration must meet the requirements of the IEC 60601-1-1
medical electrical systems standard.
Periodically, and whenever the integrity of the device is in doubt, test all functions.
The use of ACCESSORY equipment not complying with the equivalent safety requirements of
this equipment may lead to a reduced level of safety of the resulting system. Consideration
relating to the choice shall include:
• use of the accessory in the PATIENT VICINITY; and
• evidence that the safety certification of the ACCESSORY has been performed in
accordance to the appropriate IEC 60601-1 and/or IEC 60601-1-1 harmonized
national standard.
If the installation of the equipment, in the USA, will use 240V rather than 120V, the source must
be a center-tapped, 240V, single-phase circuit.
1.2.2 Safety message signal words

Safety message signal words designate the severity of a potential hazard.
DANGER: Indicates a hazardous situation that, if not avoided, will result in death or
serious injury. No danger messages apply to this system.
WARNING: Indicates a hazardous situation that, if not avoided, could result in death or
serious injury.
CAUTION: Indicates a hazardous situation that, if not avoided, could result in minor or
moderate injury.
NOTE: Indicates a hazardous situation not related to personal injury that, if not
avoided, could result in property damage.
1.2.3 Safety precautions

The following list contains general warnings and cautions you should know before installing,
maintaining or servicing the system. Warnings and cautions specific to the use of the system
can be found in the User’s Guide and User’s Reference Manual.
Warnings
• Use only GE recommended power cords
• When disconnecting the system from the power line, remove the plug from the wall outlet
first
• Due to high voltage, use insulated screw driver
• High voltage on test body; do not touch it during the test
1-8

Overview
• Only connect to supply mains with protective earth

• Always check that power cord and plug are intact and undamaged
• All system devices must be connected to the same power supply circuit
• Only interconnect devices when determined safe by qualified biomedical personnel
• Only devices that are specified compliant with IEC 60950-1 or IEC 60601-1 may be
connected to the Ethernet MC or IX ports
• Biomed must determine interconnected parts are safe.
• Do not use without manufacturer approved mounting
• If the software package is changed, all clinical settings will reset to factory defaults.
• Do not use with iCentral software V5.0.2 and earlier or MCS software V5.2 and earlier.
• Verify compatibility of all system components prior to installation
• Use only approved accessories, including mounts, and defibrillator-proof cables and
invasive pressure transducers. For a list of approved accessories, see the supplies and
accessories list delivered with the monitor. Other cables, transducers and accessories
may cause a safety hazard, damage the equipment or system, result in increased
emissions or decreased immunity of the equipment or system or interfere with the
measurement.
• Regular preventive maintenance should be carried out annually.
• Do not use multiple modules with identical measurements in the same monitor.
• The user may only perform maintenance procedures specifically described in this
manual.
• Incorrect power line frequency setting could adversely affect ECG processing.
• Make sure patient is not being monitored while servicing the equipment.
• Don’t press power key when changing language or doing factory reset.
Cautions
• Set the time of a newly added network device as close as possible to the time of devices
already on the network
1.2.4 ESD precautionary procedures

• To avoid electrostatic charges building up, it is recommended to store, maintain and use
the equipment at a relative humidity of 30% or greater. Floors should be covered by ESD
dissipative carpets or similar. Non-synthetic clothing should be used when working with
the component.
• To prevent applying a possible electrostatic discharge to the ESD sensitive parts of the
equipment, one should touch the metallic frame of the component or a large metal object
located close to the equipment. When working with the equipment and specifically when
the ESD sensitive parts of the equipment may be touched, a grounded wrist strap
intended for use with ESD sensitive equipment should be worn. Refer to the
documentation provided with the wrist straps for details of proper use.
ESD precautionary procedure training

It is recommended that all potential users receive an explanation of the ESD warning symbol
and training in ESD precautionary procedures.
1-9

The minimum contents of an ESD precautionary procedure training should include an

introduction to the physics of electrostatic charge, the voltage levels that can occur in normal
practice and the damage that can be done to electronic components if they are touched by an
operator who is electrostatically charged. Further, an explanation should be given of methods
to prevent build-up of electrostatic charge and how and why to discharge one’s body to earth
or to the frame of the equipment or bond oneself by means of a wrist strap to the equipment or
the earth prior to making a connection.
1.2.5 Disposal
Dispose of the whole device, parts of it and its packing material and manuals in accordance
with local environmental and waste disposal regulations.
1-10

System description
2 System description
2.1 Introduction
The B40/B20 monitor build up a freely configurable modular system. The architecture is
designed to enable different module combinations so that the user is able to get the desirable
parameter and feature set. This modular approach makes it possible to add new features
when they are needed.
2.2 Bus structure

The operation of monitor is based on two communication channels, the CPU bus and module
bus. All units, including the modules, receive power from the same power supply, which is an
integral part of the monitor frame.
NAND
Ethernet
Flash
DATA BUS
AT91SA
USB HOSE RS485
M7s256
SDRAM
AT91 ARM IIC BUS Sound
Address bus
LCD LCD DATA BUS
Figure 2 General bus structure of monitor

The CPU bus is a communication channel used only for internal data transfer. It is based on the
AT91 ARM local bus. Data and address are transferred on this 32 bit wide bus using the CPU
clock frequency.
The module bus is for the parameter modules. The bus is based on the industry standard
RS-485, which uses a differential serial method to transfer data. This type of bus is robust and it
allows parameter modules to be inserted or removed while the power is on. The module bus
uses a 500 kbps data transfer rate.
1-11

The RS-485 type of serial communication supports so-called multidrop or party line
connections. This means that all parameter modules connected to the module bus use exactly
the same lines for communication. The advantage of this is that all bus connectors are
identical and the modules can be connected in any order and position.
2.3 Distributed processing

This is a multiprocessor system. All parameter modules have their own microprocessor, which
performs functions such as waveform filtering, parameter related computing and pneumatic
control, etc. At the same time the main CPU performs higher level tasks such as trending and
alarm control. While the parameter modules and CPU are performing their tasks, the UPI
(Universal Peripheral Interface) microprocessor handles all functions needed to transfer data
between the parameter modules and the CPU.
This kind of parallel processing gives one major advantage to centralized processing. When
new parameter modules are added to the system, the processing power is increased. As a
result, the system does not slow down when new features are added.
2.4 Module communication

The communication master controlling data transfers between the CPU and parameter
modules is called UPI processor. It sends data to each connected module 100 times a second.
Modules respond to each data request immediately by sending a data package, whose length
depends on the type of the module. This communication protocol ensures that each module
receives and sends data every 10 ms. If a module does not respond to data requests, the UPI
processor presumes that the module is disconnected.
The data transfered on USB bus between main CPU and UPI processor.
Marker Out
Main CPU USB BUS UPI Processor Module BUS
Figure 3 Principle of UPI section operation
2.5 Software loading

The program memory on the CPU board is loaded with monitor software and selected
language files at the factory. The software is used for running all the functions that are
integrated into the CPU board. For service upgrade main software and language files, please
refer to “Software download instruction” in Appendix A or the “B40/B20 Patient Monitor
Software download instruction”.
1-12

System description
How to do cold start?

The patient monitor performs a cold start, if there is over 15 minutes from the previous power
off. You can perform a cold start by 2 methods:
• Press ON/Standby button to turn off the monitor, waiting for 15 minutes to turn on the
monitor. Or,
• Press ON/Standby button for a long time (about 15 seconds until the words “monitor is
shutting downing...“ disappear) to turn off the monitor. Then turn on the monitor.
NOTE: All the patient data and monitor settings will be lost after cold start.
2.6 Parameter modules
+5V +13...16V
Isolation VMOD
Analog transformer
electronics
MODULE BUS
Patient isolation
A/D
PATIENT
CPU
convert
Data
RAM
EEPROM
Peripheral RS485
drivers Opto isolation
drivers
Figure 4 General structure of parameter modules with patient isolation

The detailed structure of a parameter module depends on the specific needs for each
individual parameter. However, some common parts are used in the parameter modules. The
electronics inside the module is usually divided into isolated (floating) and non-isolated
sections. Typically, the non-isolated section consists of buffers to interface the parameter
module to the module bus while the rest of the electronics is located in the isolated section. The
isolated section includes the microcontroller together with memory components, the front-end
analog electronics (amplifiers, etc.) and sensor drivers.
1-13

3 Frame functional description

3.1 Main components
3.1.1 Keyboards
User interface parts

The Horizontal Membrane keypad containing 17 keys. The keypads are foil membrane
keypads. The keypads are connected to the UPI section of the CPU board.
Trim Knob is used for menu selection.
3.1.2 Display
The B40 use 12.1” LCD display with SVGA 800 x 600 resolution has bright long live lamps and a
wide viewing angle.
The B20 use 10.4” LCD display with SVGA 800 x 600 resolution has bright long live lamps and a
wide viewing angle.
NOTE: The LCD display backlight circuit runs on a high voltage. Do not touch the inverter board
or the backlight tube leads when powered.
Backlights
The backlight lamp unit consists of two integrated cold cathode fluorescent lamps. The
backlight lamp unit is driven by a separate inverter board.
1-14

Frame functional description
I/O connector
AC INLET Cable or wires
90-246 Vac
50/60 Hz Pin-to-pin connection
Alarm board Speaker
AC/DC
module
LCD
display
SVGA
Nurse call
Serial data CPU Backlight CCFL
inverter
Power Board XY/CW Board LAMPS
Module bus
Module bus Module bus

Vmod Module connector
interface board Module bus
connector
Network
CW
Trim Knob
Battery board User interface
board XY Membrane Power
External interface switch panel indicator
board
SMBUS
SMBUS
BAT1
BAT2
Network Multi I/O

Smart Smart
battery A battery B Multi I/O
Li-ion Li-ion adaptor
9-12.6V 9-12.6V
Nurse DFB Serial
call MK out port
Figure 5 B40/B20 Monitor block diagram
1-15

3.1.3 CPU board
The board is based on AT91 ARM microprocessor. Other functions include LVDS display driver,
10/100Mbps on board Ethernet, WLAN communication, Alarm Light function, KEY board and
rotor encoder control, audio driver function, nurse call function, defibrillation function, module
bus function.
The CPU section takes care of the central processing.
The main features are:
• AT91 ARM
• 266 MHz Main CPU clock
• 64MBytes SDRAM
• 4 MBytes minimum NAND flash memory
• 8 MBytes Data flash memory
• Main CPU Provides one standard UART communication
Connectors
Ethernet communication connector
WLAN card operation connector
Color LCD operation connector
Audio operation connector
Alarm Light indicator operation connector
Power board connection connector
Voltage supervision
There are two voltage supervision chips that control the system reset signals.
The +3.3V supervision chip outputs reset signals for +3.3V devices. 3.3V Reset Threshold will be
Falling: min 3.00 V; max 3.15 V.
1-16

The +1.2V supervision chip outputs reset signals for +1.2V devices. 1.2V Reset Threshold will be
Falling: min 1.08V; max 1.14 V.
3.1.4 Power board

The Power board converts the output voltage of AC/DC unit, battery voltage to various supply
voltages for the electronics of monitor. The Power board provides monitor system power
function, module bus power function, LCD backlight power and power failure alarm.
Power board operation is controlled by PMC (Power Management Controller) CPU. PMC takes
care of power path controlling. Power Board have the SMBus interface between the PMC,
battery charger IC, and smart battery.
Power board provides the system voltage for +3.3V, +5V. And Power Board provides 15V power
for measurement modules connected patient monitor module bus.
The Boost converter of PMC system provides module voltage supply for measurement
modules through patient monitor module bus.It operates at input voltage from 9V to15V.
Power Board create an power failure alarm for user to notice unexpected loss of power supply.
It indicate power failure alarm by blinking patient monitor yellow alarm light and buzzer alarm.
Block diagram of the power supplies is represented in following
1-17

MUX
+5V_PMC
ACDC (15V) Battery Charger
Battery 1 Power Path Power Management Controller (PMC)
Battery 2
Over Voltage
VSYS Enable
Protection Power Fail Alarm
Switch (Crowbar)
3.3V & 5V Buck +3.3V

VSYS
Regulator +5V
Over Current
15V Boost
Protection & Current VMOD
Regulator
Sense
+5V_PMC Linear +5V_PMC

Regulator
LCD Backlight
Backlight_VCC
Enable Switch
Figure 6 Power board block diagram
Power management controller

The power management controller (PMC) used is the Freescale MC9508AC60CFUE, 8 bit
microcontroller. The PMC is used to:
− Control power supplies sequencing
− Monitor the power supply voltages and currents via internal analog to digital converters
(ADCs)
− Disabling power supplies during fault conditions
− Communicate with the CPU board via UART communication
− Read and write to a IIC EEPROM
− Communicate with smart batteries and a level 2 smart battery charger via SMBus.
1-18

3.1.5 AC/DC unit
AD/DC unit
The AC/DC unit is a compact medical power supply based on high-efficiency technology. It is
designed for 65 watt continuous output power, universal AC input and 15V output voltage.
3.1.6 Batteries
The B40/B20 has two lithium-ion batteries, located in the battery compartment. The power
board connects one of the batteries to be the power source, if no power is received from the
AC/DC unit.The battery charging is controlled by the power board.
The batteries can be charged separately, and screen symbols and monitor frame LED
indicators indicate their charging level and possible failure.
NOTE: When the monitor is battery powered, the green battery LED is on. When the monitor is
mains powered, the green mains LED is on.
3.2 Interfacing computer

A computer is connected to the serial port connector on the Multi I/O adapter.
Contact your authorized GE Healthcare distributor for further advice on computer interface.
WARNING Connecting electrical equipment together or using the same extension cord
for more than one device may cause their leakage currents to exceed the
limits specified in relevant safety standards. Always make sure that the
combination complies with the international safety standard IEC 60601-1-1
for medical electrical systems and with the requirements of local
authorities.
WARNING Connecting the power supply cord of the computer to the wall power outlet
may cause the computer leakage current to exceed the limit specified for
medical equipment. A computer must be supplied from an additional
transformer providing at least basic isolation (isolating or separating
transformer).
1-19

3.3 Connectors and signals

3.3.1 External connectors
Figure 7 External connectors of Frame

(1) Receptacle for power cord
(2) Serial port
(3) Defibrillator connector
(4) Nurse call connector
(5) Network connector
(6) Equipotential connector
(7) Multi I/O connector
Network connector
RJ45 connector Pin Signal
1 Tx +
2 Tx -
1 2 3 4 5 6 7 8
3 Rx +
4 N/C
5 N/C
6 Rx -
7 N/C
8 N/C
1-20

Multi I/O connector(26 pin)

26 pin female connector Pin Signal
1 GND
2 NC
3 NC
18 10 4 NC
26 19 5 NC
6 NC
7 SERIAL_TXD
8 SERIAL _CTS#
9 GND
10 GND
11 NC
12 NC
13 DEFIB_MARKER_OUT
14 NC
15 NC
16 SERIAL_RXD
17 SERIAL_RTS#
18 GND
19 GND
20 NURSE_CALL
21 NC
22 NC
23 NC
24 NC
25 SERIAL_+3V3
26 GND
Nurse Call (pin 3)

Nurse call connector Pin Signal
1 GND
2 Nurse_Call
3 Nurse_Call
1-21

Serial port
9 pin female connector Pin Signal
1 GND
2 SERIAL_RXD
5 1 3 SERIAL_TXD
4 SERIAL+3.3V
6
9
5 GND
6 N/C
7 SERIAL_RTS
8 SERIAL_CTS
9 N/C
Main power
Mains connector Pin Signal
L Live
PE Protected earth
N Neutral
Defib connector (Pin 7)

Female mini din7 connector Pin Signal
1 GND
2 GND
3 GND
4 GND
5 DEFIB_MARKER_OUT
6 NC
7 GND
1-22

Hemo-dynamic module introduction
4 Hemo-dynamic module introduction

The hemo module provide general hemodynamic parameters.
Figure 8 Hemo module
4.1 Monitor software compatibility

− B40/B20 Patient Monitor using software VSP-A
4.2 Main components

4.2.1 Hemo-dynamic module
1. InvBP connector
2. Temperature connector
1 3. SpO2 connector
2 4. ECG connector
5. NIBP connector
3
Figure 9 Front panel of hemo module

The Hemo-dynamic module including the NIBP measurement, 5-lead ECG with the Impedance
Respiration measurement, SpO2 with the plethysmographic waveform, two invasive pressure
measurements (IBP1 and IBP2) and two temperature measurements (T1 and T2).
1-23

The monitor displays waveforms and measurement readings, and handles the trending and
alarm management. The ECG (e.g. heart beat and arrhythmia detection) and the Impedance
Respiration algorithms are in the monitor software. The modules measure signals and send
them to the monitor. The NIBP, SpO2, Temperature and Invasive Pressure algorithms are in the
module.
There are four parameter circuit boards inside the hemo-dynamic module for processing the
measurement signals. Each processing board has a microcontroller with software.
The NIBP parameter measurement requires one signal processing board, pneumatic system,
valve and pump unit connected to NIBP parameter board.
The second parameter board is the optional board, for Nellcor or Masimo SpO2 measurement,
it’s Masimo MS-2011 board or Covidien NELL1GE-S board at different configuration.
The third parameter board is for GE SpO2, IBP and Temperature measurement including input
board. All these three parameter is optional, according to different configuration, using
different board: it’s STP board, TP board for Nellcor, TP board for Masimo, GE SpO2 board,.
The fourth parameter board is for 3/5-lead ECG with the Impedance Respiration measurement
including ECG input unit connected to the ECG parameter board.
All parameter boards are connected together via module bus flex board connecting voltage
and module communication, the module communicates with frame through RS-485 bus.
4.2.2 NIBP board
Valves
connector
EEPROM
1024Bytes
connector
Main CPU
Pump
Pneumatic
AT91SAM7S256 control
RS485
interface
Module bus connector
256KBytes Flash
64KBytes SRAM
10bits ADC
PWR_ NIBP_+5V Pressure

SYN
6VD sensor
Power supply
MAIN_REF
Safety CPU
MSP430F2013
2KB+256B Flash
128B RAM
16bits Sigma-
Delta ADC
Figure 10 NIBP board functional block diagram
1-24

Signal processing
Two signals from the pressure transducers are amplified and sent to the A/D converter. After
the converter, digitized signals are sent to the microprocessor for data processing.
The NIBP board is controlled with an ARM7 microprocessor at 16 MHz oscillator frequency.
Memory
The NIBP program memory (processor flash memory) size is 256k x 8. The processor has 64
kBytes RAM. The EEPROM size is 8K x 8 and it is used to store the calibration values for the
pressure transducers, the pulse valve constants gained during measurements, the PC board
identification, and the module serial number.
Software control
The software controls valves and a pump. In addition to the individual on/off signals for each
component there is a common power switch for the valves and the pump that can be used at
pump/valve failures.
Safety circuit
The NIBP board is equipped with an independent safety circuit to disconnect supply voltages
from the pump and the valves if the cuff has been pressurized longer than the preset
maximum measurement time, or if the pressure of the cuff is inflated over the specified
pressure limit. The maximum measurement time values and pressure limits for different
measurement modes have been specified in the technical specification section of this manual.
Pneumatics
1
5, 6
3
4 1
The module has the following pneumatics parts:

1. Intake air filter; for preventing dust and other parts from entering the air pump and the
valves.
2. Air pump; for pumping the measuring pressure of the cuff.
3. (Pulse) Valve; for producing a linear pressure fall (bleeding) in order to measure the blood
pressure of the patient.
Note that in the service menu also names Valve and Set valve have been used for this
valve.
1-25

4. Safety valve; The safety valve is intended to be used for deflating the cuff in single fault
case, i.e. to prevent too long a measurement time or too high an inflation pressure of the
cuff.
5. Main pressure sensor; for measuring the pressure of the blood pressure cuff and the
pressure fluctuations caused by arterial wall movement.
6. Safety pressure sensor; for detecting the, cuff loose, cuff occlusion situations, etc. and
for recognizing the pressure sensor fault.
7. Cuff connector; for connection and hose identification.
Power supply section of the NIBP board

All connections are established via a 10-pin connector (male). The module needs a +15 V (dirty)
power supply to operate. The supply voltage Vmod 13.8- 16 V is generated in the power supply
section of the monitor. The other voltages needed for the operation of the NIBP measurement
are made on the NIBP board.
The NIBP power supply synchronizes the ECG and STP isolation power and supplies
non-isolated 5 V to the ECG and STP board.
4.2.3 ECG board in 5-lead measurement

The ECG measurement consists of the functions shown in Figure 11. All functions are located in
the ECG board except the ECG input unit.
1-26

PATIENT AND ECG ELECTRODES
ECG CABLE
- ECG LEAD SET
- ECG TRUNK CABLE
ECG INPUT UNIT

- ECG CONNECTOR
- INPUT PROTECTION RESISTORS
INPUT PROTECTION DIODES FOR ECG & RESPIRATION MEASUREMENT
INPUT FILTERING FOR ECG & RESPIRATION MEASUREMENTS
LEADS OFF &

RESPIRATION RESPIRATION ECG
PACER &
MEASUREMENT MEASUREMENT PREAMPLIFIERS &
DEFIBRILLATION
AMPLIFIERS CURRENT SUPPLY RLD CIRCUIT
DETECTION
BASELINE
RESTORATION
ECG CPU
12_lead_ECG_meas_blck_dgrm.vsd
RS 485 POWER SUPPLY
COMMUNICATION NV
MEMORY
ISOLATION ISOLATION
MODULE BUS CONNECTOR ECG BLOCK DIAGRAM
Figure 11 ECG measurement block diagram
ECG input unit

The ECG input unit consists of the front panel connector and the ECG input connector board
with the high voltage protection resistors. The connector for the ECG cable is a green 11-pin
rectangle shaped connector.
Input protection and filtering

The input protection is implemented with high voltage protection resistors in the ECG input unit
and with protection diodes in the ECG board. The input filtering for ECG measurement is done
with passive RC filtering.
ECG preamplifiers
The buffer amplifiers are used for each lead. The “Leads off” detection is implemented by
measuring the output level of the input buffer amplifiers with the A/D converter of the CPU. The
ECG signals are measured using differential amplifiers.
1-27

ECG amplifiers and baseline restoration

The function of the ECG amplifiers and baseline restoration is to amplify the signal and to
restore the baseline of the signal in the middle of the display after the change of the signal
level, e.g. after the change of the DC offset voltage.
Pacer detection
Pacer detection has been made by using four slew rate detector circuits. The pacer detection
amplifiers have been realized at the front of the slew rate detectors independently of the ECG
measuring channels.
Respiration impedance supply

The 31.25 kHz sine wave generator is used as the respiration measurement signal supply.
Analog switches are used for connecting the sine wave to the ECG leads to be measured.
Respiration impedance amplifiers

Buffer amplifiers are used in respiration measurement. Analog switches are used for selecting
the measurement leads. There are also additional amplifiers for increasing the respiration
signal gain. When ECG measurement is 5-lead, the respiration measurement is always done
between R and F, independently on the ECG lead selection. When ECG measurement is 3-lead,
then the respiration measurement is happened at the same lead as the ECG measurement (I, II
or III).
ECG CPU
The CPU is a 16 bit H8/3052 single-chip microcomputer. It contains 128 kbytes of flash
memory and 4 kbytes of RAM. The clock frequency is 16 MHz.
RS485 communication
The communication to the CPU board of the monitor uses RS485 protocol. The RS485 driver
circuits are optically isolated from the processor of the module.
Power supply
The ECG board has a driver-controlled half-bridge switching power supply with 5 kV isolation.
The supply voltages have been regulated with linear regulators.
4.2.4 ECG filtering

B40/B20 monitors have three ECG filtering modes:
MONITORING 0.5 to 40 Hz
DIAGNOSTIC 0.05 to 150 Hz
ST FILTER 0.05 to 40 Hz
The purpose of filtering is to reduce high frequency noise and low frequency (e.g. respiratory)
movement artifacts.
The monitor filter is used in normal monitoring. The diagnostic filter is used if more accurate
diagnostic information is needed. The ST filter gives more accurate information of ST segment,
but reduces high frequency noise.
The high-pass filters 0.5 Hz and 0.05 Hz are done with software. The monitor sends a command
to the hemodynamic module determining which of the corner frequencies 0.5 Hz or 0.05 Hz is
to be used.
The 50 Hz and 60 Hz reject filters are both low-pass filters with zero at 50 Hz or 60 Hz
correspondingly. They are software based filters used for the mains supply filtering.
In diagnostic mode the upper frequency is 150 Hz and it is limited by software.
1-28

4.2.5 STP board

STP module measures SpO2, two channels of temperatures and two channels of invasive blood
pressures.
The SpO2 measurement is made optically with an infrared light, a red light sources, and a
photosensitive detector. The SpO2 value and Pulse Rate are calculated based on the signals,
which are measured with the photosensitive detector in the SpO2 sensor. There are three
configurations of SpO2: GE SpO2, Masimo SpO2 and Nellcor SpO2. There are four kinds of STP
parameter board:
− GE SpO2 board
− STP board, integrated GE SpO2, Temperature and pressure
− TP board, integrated Temperature and pressure, communicated with Masimo OEM SpO2
through UART port to get SpO2 data and send to host.
− TP board, integrated Temperature and pressure, communicated with Nellcor OEM SpO2
through UART port to get SpO2 data and send to host.
The temperature measurement is designed for use with YSI-400 series NTC sensors.
The Invasive Pressure measurement is designed for use with the bridge type medical pressure
sensors.
Refer to the following block diagram.
1-29

PATIENT AND INVASIVE CANNULA OR

PATIENT AND SpO2 PROBE PATIENT AND TEMPERATURE SENSOR
CATHETER
FLUSHING KIT & INVASIVE PRESSURE

SpO2 TRUNK CABLE TEMPERATURE CONNECTOR
SENSOR WITH DOME
SpO2 CONNECTOR INPUT PROTECTION CIRCUITRY INV.PRESSURE CONNECTOR
SpO2 PROBE RECOGNITION & LED

DRIVE SELECTION MATRIX
TEMPERATURE SENSOR SIGNAL INV: PRESSURE SENSOR SIGNAL
MEASUREMENT CURRENT MEASURE MENT VOLTAGE
AMPLIFIER SOURCE AMPLIFIER SOURCE
SpO2 LED SpO2

DRIVE AMPLIFIER
A/D CONVERSION
STP CPU
RS 485 POWER SUPPLY
STP_brd_blck_dgrm.vsd
COMMUNICATION NV
MEMORY
ISOLATION ISOLATION
MODULE BUS CONNECTOR STP BLOCK DIAGRAM
Figure 12 STP block diagram
1-30

PATIENT AND INVASIVE CANNULA OR

PATIENT AND SPO2 PROBE PATIENT AND TEMPERATURE SENSOR
CATHETER
FLUSHING KIT & INVASIVE PRESSURE

SPO2 TRUNK CABLE TEMPERATURE CONNECTOR
SENSOR WITH DOME
SPO2 CONNECTOR INPUT PROTECTION CIRCUITRY INV.PRESSURE CONNECTOR
TEMPERATURE SENSOR SIGNAL INV: PRESSURE SENSOR SIGNAL

MEASUREMENT CURRENT MEASUREMENT VOLTAGE
AMPLIFIER SOURCE AMPLIFIER SOURCE
MASIMO OR NELLCOR SPO2 MODULE

A/D CONVERSION
TEMPERATURE AND IBP CPU
NV MEMORY
RS 485
POWER SUPPLY COMMUNICATION
ISOLATION ISOLATION
TP +Masimo or Nellcor SPO2

BLOCK DIAGRAM
MODULE BUS CONNECTOR
Figure 13 TP board block diagram
Microprocessor unit
The CPU is a 16 bit H8/3052 single-chip microcomputer. It contains 128 kbytes of flash
memory and 4 kbytes of RAM. The clock frequency is 16 MHz.
High speed I/O is used to obtain a pulse control sequence necessary for pulse oximetry
measurement. Timing for the clock is from the oscillator.
1-31

Temperature measurement unit

The NTC-resistor value in the probe depends on the patient’s temperature. It is measured with
the following principle described below.
The constant current source is supplied about 38 µA current through the temperature sensor
(YSI 400-series NTC resistor). The constant current is caused a voltage over the temperature
sensor (NTC resistor). The voltage over the temperature sensor is amplified in a differential
amplifier stage. The amplified voltage is transferred to a controller of the STP board through an
A/D converter.
constant
Defibrillation/ESD protection current
resistors and diodes source
Temperature
sensors T1, T2
R Ref1 Ref2
T1 T2
Differential
R amplifier
0C:7k36 d/dt 0
0 To A/D
15C:3k54
converter
25C:2k53
R
0
38C:1k30
45C: 984 0
PSM_temp_meas_principle.vsd
R
Figure 14 Temperature measurement principle
Invasive blood pressure measurement unit

An isolated +5 V voltage is supplied to the pressure transducer. The differential voltage, which
depends on the pressure and the supplied voltage, is calculated from the bridge connection
(see the formula below).
Uout = Uin × pressure × 5 µV, where Uin is 5 V
⇒ Uout = 25 µV × pressure [mmHg]
Pressure amplification is realized in the instrumentation amplifier. The gain of the amplifier is
set to keep the level of the signal transferred to the A/D converter within the measurement
range even when there are circumstantial offsets or offsets caused by the transducer. There is
a filter before the amplifier to attenuate high frequency disturbances.
1-32

Vin
Current
measurement G
to AD converter
Pressure
transducer
Instrum entation
amplifier
PSM_pressure_meas_principle.vsd
Vout
Input filter G
to A D converter
Figure 15 Pressure measurement principle
Pulse oximetry measurement section

LED control signals
The D/A converters of the microcontroller on the STP board set the LED intensity adjustment
values for the infrared and red LEDs of the SpO2 probe. The microcontroller on the STP board
switches ON (to the adjusted intensity) and OFF the SpO2 probe LEDs according to the
predetermined sequence.
LED driving circuit

Differential amplifiers measure the LED currents (LED current indication) of the SpO2 probe over
the shunt resistors placed in the LED current paths. The LED driving voltages (LED voltage
indication) are measured from the driver circuitry. The LED driving circuits also have MOSFET
transistor matrix to enable the use of different probe configurations.
Measured signal preamplification

The preamplifier is a bipolar/single-ended current-to-voltage converter with adjustable gain. A
higher gain is used for measuring thin tissue. The preamplification stage has also ambient light
reduction and a second amplifier stage.
1-33

LED Driving circuit 1 LED Intensity adjustment 1
LED ON/OFF control 1
LED voltage indication 1
LED current indication 1
LED Driving circuit 2 LED Intensity adjustment 2
LED ON/OFF control 2
LED voltage indication 2

SpO2
Probe LED current indication 2
LP Oximeter channel 1
Gain=7.5
DC-
suppression
Gain=7.5
Ambient reduction DC-

suppression
Amplifier: Gain=7.5
Preamplifier: Gain = 2
Current-to-voltage type
Spo2_measurement_blck_diagr.vsd
Bipolar/single-ended modes DC-
Adjustable gain suppression
Oximeter channel 4
LP
DE-MUX Amplifiers
Analog Digital
Figure 16 GE Pulse oximetry measurement block diagram
Red and infrared channel separation

It is possible to multiplex the detector signal to four different channels depending on the
content of the signal. The detector signal must at least multiplex into infrared and red signals.
Other channels are e.g. for diagnostic purposes.
1-34

4.2.6 Power supply

Serial communication
An RS485 type bus driver makes the serial communication between the module and the frame.
The data transmission rate is 500kbps.
Module BUS(RS-485)
Frame
ECG STP NIBP EtCO2 Recorder
Figure 17 Serial communication between Frame and modules
Signals and isolation barrier

The communication signals transfer over the isolation barrier by using high isolation voltage
(6kV) opto isolators.
Power supply section

The power for the electronics on the floating part of the STP and the ECG boards is made on
each board with the switching power supplies connected to a high voltage isolated
transformer. The switching power supplies on the STP and ECG boards are synchronized to the
frequency, about 172.8 kHz of the switching power supply on the NIBP board. The NIBP board
supplies non-isolated 5 V to the ECG and STP boards. The module uses only Vmod 13.8 - 16 V
voltage of the frame. The other voltages of the measuring boards are made by the switching
power supplies and regulators or the linear regulators. Each measuring board is protected
against overloading with PTC type automatic fuses.
1-35


4.3.1 Front panel connectors
Table 6 ECG connector
ECG Connector Pin No. Signal Name

1 R/RA; Right arm electrode
2 C2/V2; Chest electrode
4 L/LA; Left arm electrode
5 N/RL; Neutral/Right Leg Drive electrode
8 F/LL; Left Leg electrode
11 Cable Shield
Table 7 SpO2 connector
SpO2 connector Pin No. Signal Description

1 DET_A Photodiode anode
2 DET_C Photodiode cathode
3 DATA-
4 Wire 1/3 LED connection
5 IR_C IR LED cathode
6 OUTER SHIELD
7 DET_SHIELD
8 PRB_ID Bin/ID Resistor+
9 Wire 3/5 LED Connection
10 RED_C RED LED cathode
11 DATA+
1-36

Table 8 Invasive blood pressure connectors (IBP1, IBP2)
Invasive blood pressure Pin Signal Description

connectors (Dual BP) No.
1 BP_+VREF BP transducer excitation voltage, channel
1
2 BP SIG+ BP transducer signal positive (+), channel
1
3 BP_+VREF BP transducer excitation voltage, channel
2
4 AGND Analog ground
5 BP SIG+ BP transducer signal positive (+), channel
2
6 SHIELD BP cable shield
7 AGND Analog ground
8 BP SIG1 BP transducer signal negative (-), channel
1
9 BP SIG2 BP transducer signal negative (-), channel
2
10 BP1_ID BP1 probe identification
11 NC Not connected
Table 9 Temp connector (T1, T2)
Temp connector Pin No Signal

1 Sensor drive current
2 Input from temperature sensor, channel 1
3 Not connected
4 Not connected
5 Thermistor ID (LOW= Temperature error,
HIGH=YSI 400 series)
6 Cable shield
7 Analog ground
8 Input from temperature sensor, channel 2
9 Not connected
10 Not connected
11 Digital ground
1-37

4.4 Measurement principle

4.4.1 NIBP
NIBP (Non-Invasive Blood Pressure) is an indirect method for measuring blood pressure.
The NIBP parameter conforms to EN1060-1:1995/A2:2009 Specification for Non-invasive
sphygmomanometers.
The NIBP measurement is performed according to the oscillometric measuring principle. The
cuff is inflated with a pressure slightly higher than the presumed systolic pressure, and
deflated at a speed based on the patient’s pulse, collecting data from the oscillations caused
by the pulsating artery. Based on these oscillations, values for systolic, mean, and diastolic
pressures are calculated.
The following parts are necessary for the NIBP measurement:
• hemo module
• twin hose (adult or infant model)
• blood pressure cuffs (various sizes)
4.4.2 ECG
Electrocardiography analyzes the electrical activity of the heart by measuring the electrical
potential produced with electrodes placed on the surface of the body.
ECG reflects:
• electrical activity of the heart
• normal/abnormal function of the heart
• effects of anesthesia on heart function
• effects of surgery on heart function
See the “User's Guide” or the “User’s Reference Manual” for electrodes’ positions and other
information.
4.4.3 Pulse oximetry

A pulse oximeter measures the light absorption of blood at two wavelengths, one in the near
infrared (about 940 nm) and the other in the red region (about 660 nm) of the light spectrum.
These wavelengths are emitted by LEDs in the SpO2 probe, the light is transmitted through
peripheral tissue and is finally detected by a PIN-diode opposite the LEDs in the probe. The
pulse oximeter derives the oxygen saturation (SpO2) using an empirically determined
relationship between the relative absorption at the two wavelengths and the arterial oxygen
saturation SaO2.
In order to measure the arterial saturation accurately, pulse oximeters use the component of
light absorption giving variations synchronous with heart beat as primary information on the
arterial saturation.
A general limitation of pulse oximetry is that due to the use of only two wavelengths, only two
hemoglobin species can be discriminated by the measurement.
The modern pulse oximeters are empirically calibrated either against fractional saturation
SaO2frac;
1-38

HbO2
SaO2 frac =
HbO2 + Hb + Dyshemoglo bin Formula 1
or against functional saturation SaO2func;
HbO 2
SaO 2 func =
HbO 2 + Hb Formula 2
Functional saturation is more insensitive to changes of carboxyhemoglobin and
methemoglobin concentrations in blood.
The oxygen saturation percentage SpO2 measured by the Datex-Ohmeda module is calibrated
against functional saturation SaO2func. The advantage of this method is that the accuracy of
SpO2 measurement relative to SaO2func can be maintained even at rather high concentrations
of carboxyhemoglobin in blood. Independent of the calibration method, pulse oximeters are
not able to correctly measure oxygen content of the arterial blood at elevated
carboxyhemoglobin or methemoglobin levels.
Plethysmographic pulse wave

The plethysmographic waveform is derived from the IR signal and reflects the blood pulsation
at the measuring site. Thus the amplitude of the waveform represents the perfusion.
Pulse rate
The pulse rate calculation is done by peak detection of the plethysmographic pulse wave. The
signals are filtered to reduce noise and checked to separate artifacts.
Intensity of
Imax (DC-component) Imax
transmitted
light AC-component
Imin
Transmitted Variable absorption

light due to pulse added
volume of arterial
blood
Arterial blood
Venous blood
absorption_of_light.vsd
Tissue
Time
No pulsation Pulsatile blood
Incident light
Figure 18 Absorption of infrared light in the finger
1-39

SpO2 sensor connector
IRED
Emitter
RED
PSM_absorption_of_infrared.vsd
Detector
Figure 19 Pulse oximetry probe parts layout and schematic diagram

The standard probe is a finger clamp probe which contains the light source LEDs in one half
and the photodiode detector in the other half. Different kinds of probes are available from GE
Healthcare.
4.4.4 Temperature
The temperature is measured by a probe whose resistance varies when the temperature
changes, called NTC (Negative Temperature Coefficient) resistor.
The resistance can be measured by two complementary methods:
• Applying a constant voltage across the resistor and measuring the current that flows
through it.
• Applying a constant current through the resistor and measuring the voltage that is
generated across it.
Hemo module uses the constant current method. The NTC-resistor is connected in series with a
normal resistor and a constant current is applied through them. The temperature dependent
voltage can be detected at the junction of the resistors, thus producing the temperature signal
from the patient. The signal is amplified by analog amplifiers and further processed by digital
electronics.
4.4.5 Invasive blood pressure

To measure invasive blood pressure, a catheter is inserted into an artery or vein. The invasive
pressure setup, consisting of a connecting tubing, a pressure transducer, an intravenous bag
of normal saline, all connected together by stopcocks, is attached to the catheter. The
transducer is placed at the same level with the heart, and is electrically zeroed.
The transducer is a piezo-resistive device that converts the pressure signal to a voltage. The
monitor interprets the voltage signal so that pressure data and pressure waveforms can be
displayed.
1-40

4.4.6 Respiration
Impedance respiration is measured across the thorax between ECG electrodes. The respiration
signal is made by supplying current between the electrodes and by measuring the differential
current from the electrodes. The signal measured is the impedance change caused by
breathing. The respiration rate is calculated from these impedance changes, and the
respiration waveform is displayed on the screen.
1-41

1-42

2 Installation
1 System installation
Safety precautions
Warnings
• The monitor or its components should not be used adjacent to or stacked with other
equipment. If adjacent or stacked use is necessary, the monitor and its components
should be observed to verify normal operation in the configuration in which it will be
used.
• After transferring or reinstalling the monitor, always check that it is properly connected
and all parts are securely attached. Pay special attention to this in case of stacked
mounting.
• The monitor must not be used without a manufacturer approved mounting attached.
• Never install the monitor so that it is above the patient.
Cautions
• The monitor display is fragile. Ensure that it is not placed near a heat source or exposed
to mechanical shocks, pressure, moisture or direct sunlight.
1.1 Unpacking instructions

1. Confirm that the packing box is undamaged. If the box is damaged, contact the shipper.
2. Open the top of the box and carefully unpack all components.
3. Confirm that all components are undamaged. If any of the components is damaged,
contact the shipper.
4. Confirm that all components are included. If any of the components is missing, contact
your GE Healthcare distributor.
1.2 Choosing location

Consider the following aspects:
• lighting
• space
• connections
• electromagnetic and radio frequency interference. For details see Appendix B.
ElectroMagnetic Compatibility
• environment
1.3 Mounting the monitor

Mounting of monitor to the Wall Mount, Rollstand, Wall Mount with standard arm or Counter
Top Mount is described in a separate instruction sheet delivered with each mount.
2-1

System installation
1.4 Connection to mains

Connect the power cord to the mains power inlet at the back of the monitor and to the wall
socket.
NOTE: Before taking the monitor into use for the first time, the batteries should be fully
charged. Keep the monitor connected to the mains until the Battery charging symbol
disappears (may take up to 5 hours if the batteries are fully discharged).
Battery charging symbol
WARNING The power cord may only be connected to a three-wire, grounded, hospital
grade receptacle
1.4.1 Install the batteries
1. Open the lid of the battery compartment by

the side of the monitor. Move the latch up or
down.
2. Put in the new battery. Make sure that the
charging indicator is facing to the back side of
the monitor, then push the battery in all the
way, move the latch and close the lid. Power
on the monitor, check the monitor indicators,
see above.
1.5 Connection to Network

WARNING Do not use with iCentral software V5.0.2 and earlier or MCS software V5.2
and earlier.
The B40/B20 monitor has been verified to be able to work in CARESCAPETM Network and S/5
network environments. Other network infrastructures are not supported.
The B40/B20 monitor has the capability to communicate with GE CARESCAPE pro CIC version
4.0.8, 4.1.1 and 5.1.0; communication with iCentral version 5.0.3 and 5.1.1.
The B40/B20 monitor can talk to Aware Gateway Server V1.6 in Unity network and talk to
Mobile Care Server V5.2 in S/5 network. The B40/B20 monitor can work with S/5 Collect V4.0. At
most 4 CIC Central stations, 1 Aware Gateway Server can be added into one Unity network for
monitor. The monitor can’t act as the Time Master in Unity network.
The B40/B20 monitor does not support Patient Data Server; bed to bed communication to
B40/B20 or other monitors (e.g. Dash 3000/4000/5000, Solar 8000, B850, B650).
2-2

1.5.1 Pre-installation requirements

Ensure that the applicable network infrastructure is in place prior to the installation of the
patient monitor.
Acquire the network configuration information from the hospital IT or the related project
documentation and installation files.
MC Network
• The MC Network infrastructure shall be installed according to the "CARESCAPE Network
Configuration Guide".
• The installation site of the patient monitor shall have a wall jack and a network patch
cable for the MC Network.
S/5 Network
• The S/5 Network shall be installed according to the "S/5 Network Installation Guide". Refer
to the "iCentral and iCentral Client Service Manual" for iCentral installation instructions.
• The installation site of the patient monitor shall have a wall jack and a network patch
cable for the S/5 Network.
To connect the network

Use the CAT-5 network cable to connect the monitor to the network.
1. Make sure that the power is switched off.
2. Connect the one RJ-45 connector to network port at the back of the monitor.
3. Connect the other RJ-45 connector to the corresponding port on the wallbox.
4. Power on the monitor. set up the network configuraiton, refer to below instruction.
5. Confirm that the network symbol and 'Connected to Network' message are displayed in
the upper part of the screen.
1.5.2 Network configuration

How to set up Unity network
1. Connect network cable to the ethernet port on the rear of the monitor. Connect the other
end of the cable to the clinical network.
2. Enter the service mode in the monitor:
Monitor Setup
Install/Service (16-4-34)
Service (26-23-8)
3. Select the network mode:
Frame (in service menu)
Network
Network
Choose “Unity” as network mode
4. Set up Unity configuration
Unity config
Set up following information:
2-3

System installation
• Unit Name:
It is used for setting the unit name in the monitor. The default unit name is “X”.
NOTE: Unit Name here should be set to be same as CIC Unit Name.
• Bed Name:
It is used for setting the bed name in the monitor. The default bed name is the last
five characters of the MAC address, excluding the colon delimiter characters.
• Save Changes:
It is gray if the changes have not been done to the menu information.
NOTE: When save changes the monitor will restart automatically.
5. Set up the TCP/IP configuration
TCP/IP (Eth)
TCP/IP Config
• Using DHCP menu to configure the DHCP,
− Please select disabled, this monitor’s IP address, subnet mask, default gateway and
DNS Server must be manually configured.
NOTE: The default setting for DHCP is disable;
NOTE: If the IP address or both of unit name and bed name duplicate, the alarm will
be given to the new added monitors.
• Save the configuration after configuring the TCP/IP. When save changes the
monitor will restart automatically.
6. If the monitor does not connect to network correctly, you may also need to set up the
speed and duplex configuration.
TCP/IP (Eth)
TCP/IP Config
Speed and Duplex
Choose the suitable settings according to your network environment. The default setting
is AUTO.
How to set up S/5 network

1. Connect network cable to the ethernet port on the rear of the monitor. Connect the other
end of the cable to the clinical network.
2. Enter the service mode in the monitor:
Monitor Setup
Install/Service (16-4-34)
Service (26-23-8)
3. Select the network mode:
Frame (in service menu)
Network
Network
Choose “S5” as network mode
4. Setup S/5 network configuration
Dri config
Set up following information:
• DRI level:
It is used for setting the monitor’s network communication. should be selected to
2003
2-4

• Virtual Plug ID:

Should enter 5 digit numbers, which is the same as in iCentral.
NOTE: If you don’t have the virtual plug ID number in iCentral, please refer to the
“iCentral User's Reference Manual” to set up in iCentral first.
• Transfer Mode:
It is used for choosing transfer mode: DRI/ETH or DRI/UDP
Should be selected to DRI/ETH
• Software Download:
Reserved for future use.
• Save Changes:
Select “Save Changes“ to take in use changes made in this page.
NOTE: In S/5 network protocal, no need to set up the TCP/IP settings.
NOTE: For other the network menu’s instruction, please refer to 2.4. Network in “Service
Menu” chapter for more details.
1.6 Inserting and removing the E-miniC module
To use the E-miniC module, your monitor need pre-configure the extension rack from
manufacture.
To insert module:
1. Align the module with the insertion guides
2. Push the module into the monitor frame until it clicks and stops.
3. Pull the module outwards to insure the module is firmly seated.
To remove module:
1. Pressing the release latch, on the bottom of the module.
2. Grasp the module firmly and pull out of the Frame. Make sure not to drop it when it
comes out.
WARNING When detaching modules, be careful not to drop them. Always support with
one hand while pulling out with the other.
2-5

System installation
1.7 Monitor connections
Figure 3 Font view

(1) Transportation handle
(2) Alarm light
(3) The Trim Knob
(4) Command board keys
(5) Battery compartment
(6) Guide rail for GCX mounting
(7) Mains power and battery LEDs
(8) On/standby key
(9) Hemo connectors
(10) E-miniC module
(11) Recorder module
2-6

Figure 4 Rear view connections

(1) Receptacle for power cord
(2) Serial port
(3) Defibrillator connector
(4) Nurse call connector
(5) Network connector
(6) Equipotential connector
(7) Multi I/O connector
1.8 Visual indicators

Function Specification Explanation
External power supply Green LED Indicates when monitor is powered from
mains
Battery operation Green LED Indicates when monitor is powered from
internal batteries
Battery condition Orange LED Indicates when monitor is charging
batteries (solid) or battery failure (flashing).
Alarm Light Highly visible Ease alarm detection from distance.
Red/Yellow/Cyan
light
1.9 Functional check

Refer to the 3. Installation checkout in Chapter 3 for procedure.
2-7

3 Maintenance
Instructions
1 Instructions
1.1 Introduction
These instructions include procedures of system maintenance for the B40/B20. It’s include four
sections:
• Electrical safety tests.
• Installation checkout, which should be performed after installation and service
configuration.
• Maintenance and checkout, which should be performed every 12 months.
• Adjustments and calibrations
NOTE: Please complete the check form when performing the corresponding procedures.
NOTE: For the E-MiniC maintenance and calibration, please refer to “8. E-MiniC Module“ or “S/5
Single-width Airway Module, E-miniC Technical Reference Manual Slot” M1027829-1.
The symbol " in the instructions means that the procedure performed should be signed in
the check form.
The procedures should be performed in ascending order, bypassing those that are not
applicable for a particular monitor.
To enter the service menus, you need following passwords:
Monitor Setup - Install/Service (password 16-4-34) - Service (password 26-23-8)
In case you evaluate the measurement accuracy with a patient simulator, add the simulator’s
accuracy specification to the one for the monitor.
CAUTION Failure on the part of all responsible individuals, hospitals or institutions,
employing the use of this device, to implement the recommended
maintenance schedule may cause equipment failure. The manufacturer does
not, in any manner, assume the responsibility for performing the
recommended maintenance schedule, unless an equipment maintenance
agreement exists. The sole responsibility rests with the individuals, hospitals, or
institutions utilizing the device.
CAUTION Only trained personnel with appropriate equipment should perform the tests
and repairs outlined in this section. Unauthorized service may void warranty of
the unit.
CAUTION Wear a static control wrist strap when handling PC boards. Electrostatic
discharge may damage components on the board.
3-1

1.2 Recommended tools

NOTE: Use only properly maintained, calibrated and traceable measurement equipment for
the specified calibrations and adjustments to ensure accuracy.
NOTE: A functional tester cannot be used to assess the accuracy of pulse oximeter for monitor.
Table 1 Recommended accessories and tools
Accessories
A rigid cylinder or pipe
NIBP cuff
Adult NIBP cuff hose with cuff ID
Infant NIBP cuff hose with cuff ID
Tubing parts to connect a manometer and a pump to
the NIPB cuff and hose.
Dual invasive pressure adapter cable
ECG accessories, IEC or AHA
- Multi-link 3-lead integrated cable and leadwire
- Multi-link 5-leadwire set
- Multi-link 3/5-lead ECG trunk cable
SpO2 finger probe
SpO2 Interconnect Cable
Temperature dual cable
CO2 Sampling line 3m/10 ft
Tool
A multiparameter patient simulator with IBP, Temp
adpter cables
Screwdrivers PH1, PH2
NOTE: For details on recommended accessories see “Supplies and Accessories“ catalog.
3-2

Electrical Safety Tests
2 Electrical Safety Tests

2.1 General
Electrical safety tests provide a method of determining if potential electrical health hazards to
the patient or operator of the device exist.
2.2 Recommendations
GE recommends that you perform all safety tests presented in this chapter.
• Upon receipt of the device (monitor and its associated equipment).
• Every twelve months thereafter planned maintenance
• Each time the main enclosure is disassembled or a circuit board is removed, tested,
repaired, or replaced
These instructions are intended for every component in the system. GE recommends that the
qualified personnel performing the tests.
2.3 Test Equipment

The recommended test equipment required to perform electrical safety tests is listed below.
Item Specification
Satety Analyzer/Leakage Current Tester Equivalent to the circuits
shown
Ground Bond Tester 0 – 1 ohm
Safety Test Body Kita P/N M1155870 or equivalent
a Instead of the test bodies included in the safety test body kit, other applicable test
bodies with all pins connected together may be used.
Perform electrical safety tests using an electrical safety analyzer per IEC 60601-1, UL 60601-1,
EN 60601-1 or CSA C22.2 No. 601.1. The schematics in the section provide a general
understanding of the test equipment. Actual configuration of test equipment may vary.
The patient monitor being tested should be placed on an insulating surface.
2.4 Power Outlet Test

Verify that the power outlet is wired correctly per the countryís electrical code standard before
starting the following electrical safety tests. The results of the following tests will be inaccurate
unless a properly wired power outlet is used. Use only non-isolated power outlets when
performing safety tests.
"
3-3

2.5 Power cord and plug

Verify the power cord being used with the patient monitor is good. The following are a couple
of things to check for in this regard:
• Failure of the power cord strain relief is very common. Often times users of the equipment
pull on the power cord itself, rather than the power cord plug, to unplug the patient
monitor from a wall receptacle. If in doubt, test for continuity through each conductor of
the power cord connector and plug.
• Verify line, neutral, and earth conductors are properly connected to the power cord plug
and are not short-circuited. Replace the power cord, as necessary with a
regulatory-approved cord for the country of use.
"
WARNING Use only AC power cords recommended or manufactured by GE.
2.6 Ground (Earth) Integrity

Listed below are two methods for checking the ground (earth) integrity, “Ground Continuity
Test” and “Impedance of Protective Earth Connection.” These tests determine whether the
device's exposed metal and power inlet's earth (ground) connection has a power ground fault
condition
Perform the in accordance with your local regulations.
Refer to the instructions contained with the safety analyzer to perform each test.
2.6.1 Ground Continuity Test

The measuring device (MD) in the diagram below may be a DMM or part of a safety analyzer.
NOTE: The measuring device (MD) represents the network and voltage measuring instrument
and its frequency characteristics per IEC 60601-1.
"
3-4

Acceptance criteria:
• For equipment without a power supply cord, the impedance between the protective earth
terminal and any accessible metal part which is protectively earthed shall not exceed 0.1
ohms.
• For equipment with a power supply cord, the impedance between the protective earth
pin in the mains plug and any accessible metal part which is protectively earthed shall
not exceed 0.2 ohms.
2.6.2 Impedance of Protective Earth Connection

This test, unlike a ground continuity test, will also stress the ground system by using special
ground bond testers.
This test normally is only required as a manufacturing production test to receive safety agency
compliance. Some country agencies do require this test after field equipment repairs (e.g.,
Germany’s DIN VDE 0751 standards). Consult your country/local safety agency if in question.
Compliance is checked by the following steps:
(1) A current of 25A from a current source with a frequency of 50 or 60 Hz with a no-load
voltage not exceeding 6 V is passed for at least 5 seconds, but no more than 10 seconds,
through the protective earth terminal or the protective earth pin in the mains plug and
each accessible metal part which could become live in case of failure in basic insulation.
(2) The voltage drop between the parts described is measured and the impedance
determined from the current and voltage drop. It shall not exceed the values indicated.
When taking this measurement, move the unit’s power cord around. There should be no
fluctuations in resistance.
"
Acceptance criteria
• For equipment without a power supply cord, the impedance between the protective earth
terminal any accessible metal part which is protectively earthed shall not exceed 0.1
Ohms.
• For equipment with a power supply cord, the impedance between the protective earth
pin in the mains plug and any accessible metal part which is protectively earthed shall
not exceed 0.2 ohms.
2.7 Ground (earth) wire leakage current tests

This test measures the current leakage flowing from the mains part through or across the
insulation into the protective earth conductor of the device under test.
Perform this test both in Normal Condition (NC) and in a Single Fault Condition (SFC), where one
of the supply conductors is open at a time. Perform the test with normal and reverse polarity.
NOTE: Refer to the instructions delivered with the safety analyzer to perform this test.
3-5

Leakage Tester
Power Cord
HIGH NORM Power Cord
LOW
GND
GND
RVS Device
Under
Test
0.15µF
DMM 1K
10
DMM set to measure AC voltage
NOTE: The measuring device (MD) represents the network and voltage measuring instrument
and its frequency characteristics per IEC 60601-1.
(1) Configure the safety analyzer as follows (NC):
• Polarity - NORMAL
• Neutral - CLOSED
(2) Power on the device under test.
(3) Read and record the current leakage indicated on the tester.
(4) Configure the safety analyzer as follows (SFC):
• Neutral - OPEN
• Polarity - REVERSED
• Neutral - OPEN
(10) Power off the device under test.
"
If measured reading is greater than the appropriate specification below, the device under test
fails. Contact GE Technical Support.
Acceptance criteria NC (Normal condition)

• (USA only) 300 µA, and the device under test is powered from 100-120 V/50-60 Hz
3-6

• (USA only) 300 µA, and the device under test is powered from a center-tapped 200-240
V/50-60 Hz, single phase circuit (UL Split Phase Exemption)
• 500 µA, and the device under test is powered from a non-centertapped, 100-240 V/50-60
Hz, single-phase circuit
Acceptance criteria SFC (Single fault condition) - one of the supply

conductors open at a time
• 1000 µA
Center-tapped and non-center-tapped supply circuits produce different leakage currents and
the UL and IEC limits are different.
2.8 Enclosure (Touch) leakage current test

This test measures current leakage through the exposed conductive parts on the device under
test.
Perform the test in Normal Condition (NC) and in two different Single Fault Conditions (SFC): 1)
earth open and 2) one of the supply conductors open at a time. Perform the test with normal
and reverse polarity.
Leakage Tester
Power Cord

LOW
GND
RVS
Device
Open
Under
Closed GND Test
0.15µF
DMM 1K
10
Probe to exposed conductive chassis
NOTE: The MD represents the network and voltage measuring instrument and its frequency
characteristics per IEC 60601-1.
• GND (Earth) - CLOSED
(2) Power on device under test.
(3) Read and record the current leakage indicated on tester.
3-7

• Neutral - OPEN
• GND (Earth) - OPEN
• Neutral - OPEN
"
Acceptance criteria NC
• 100 µA, and the device under test is powered from 100-240 V/50-60 Hz
Acceptance criteria SFC - earth open or one of the supply conductors open
at a time
• (USA only) 300 µA, and the device under test is powered from 100-120 V/50-60 Hz
• (USA only) 300 µA, and the device under test is powered from a center-tapped 200-240
V/50-60 Hz, single phase circuit (UL Split Phase Exemption)
• 500 µA, and the device under test is powered from a non-centertapped, 110-240 V/50-60
Hz, single-phase circuit
3-8

Center-tapped and non-center-tapped supply circuits produce different leakage currents and
the UL and IEC limits are different.
2.9 Patient (source) leakage current test

This procedure measures the leakage current from the ECG/RESP connector or the SPO2
connector of the device to ground.
Use the safety test body kit to perform the test in Normal Condition (NC) and in two different
Single Fault Conditions (SFC): 1) earth open and 2) one of the supply conductors open at a time.
Perform test with normal and reverse polarity.
Leakage Tester
Power Cord

LOW
GND
RVS
Device
Under
Closed GND
ECG Test Body Test
or SPO2 Test Body
0.15µF
DMM 1K
10
(1) Connect the ECG/RESP Test Body to the green connector of the device under test.
• Neutral - OPEN
3-9

• Neutral - OPEN
(16) Repeat the steps in this procedure using the appropriate SPO2 Test Body. Connect the
SPO2 Test Body to the blue SPO2 connector of the device under test.
"
Acceptance criteria NC
• 10 µA
Acceptance criteria SFC - earth open or one of the supply conductors open
at a time
• 50 µA
2.10 Patient (sink) leakage current test

This procedure measures the leakage current from a mains voltage source into the ECG/RESP
connector or the SpO2 connector. Perform the test in Normal Condition (NC) with normal and
reverse polarity.
3-10

Leakage Tester
Power Cord
LOW
GND
RVS
Device
120K
ECG Test Body Under
Closed GND
or ECG Cable Test
or SPO2 Test Body
0.15µF
DMM 1K
10 (Keep cable length as
short as possible.)
NOTE: Per IEC 60601-1, the impedance to protect the circuitry and the person performing the
test, but low enough to accept currents higher than the allowable values of the LEAKAGE
CURRENT to be measured.
WARNING Shock hazard. The following step causes high voltage at the test body. Do
not touch the test body.
(1) Connect the ECG/RESP Test Body to the green connector of the device under test.
(2) Configure the safety analyzer as follows:
(5) Configure the safety analyzer as follows:
(8) Repeat the steps in this procedure using the appropriate SPO2 Test Body. Connect the
SPO2 Test Body to the blue SPO2 connector of the device under test.
"
Acceptance criteria
• 50 µA
3-11

2.11 Test completion

(1) Disconnect the safety analyzer from the power outlet.
(2) Disconnect the test equipment from the patient monitor.
(3) Disconnect the patient monitor’s power cord from the leakage tester.
(4) Fill in all necessary documents.
3-12

Installation checkout
3 Installation checkout
These instructions include procedures for a installation checkout for B40/B20 monitor. It is
recommended to be performed after monitor installation and service configuration.
Skip the tests that are not applicable for the installed monitor.
These instructions include a “Installation and checkout form, B40/B20” to be filled in when
performing the procedures.
An electrical safety check and a leakage current test should be performed prior to the monitor
installation.
3.1 Visual inspection

Perform the following visual inspection to the installed monitoring system:
• Carefully inspect the patient monitor and the connected peripheral devices for any
damage.
• Verify that the patient monitor and the connected peripheral devices are properly
mounted with specified mounting solutions.
• Verify that the cables between the patient monitor and the connected peripheral devices
are intact and properly connected to the right connectors.
• Verify that the modules are properly connected and locked.
• Verify that the battery door are properly locked.
The cleaning precautions, cleaning requirements, cleaning procedures, and recommended
cleaning solutions for the monitor are described in the "User’s Manual". For details about
cleaning, disinfecting and sterilizing the accessories, see the instructions for use in the
accessory package.
3.2 Functional inspection

3.2.1 Start-up
1. Turn on the patient monitor.
Verify that the monitor starts up normally:
• The red, yellow and blue alarm lights are lit momentarily.
• The speaker gives an audible beep.
• The normal monitoring screen appears and there are no error messages on the
screen.
NOTE: Refer to section “Batteries” to see the procedure for battery conditioning if you receive a
a Condition Battery X message.
NOTE: Before taking the patient monitor into use for the first time, the battery should be fully
charged. Keep the monitor connected to the mains until the battery is fully charged.
"
3-13

3.2.2 Display
1. Verify that all text is readable and all images are clear.
2. Verify that the brightness is good. Adjust if necessary.
"
3.2.3 Keyboard(s)
1. Enter the service menu:
Monitor Setup - Install/Service (password 16-4-34) -
Service (password 26-23-8) - Keyboard
2. Check the keys and Trim knob one by one.
"
3.2.4 Frame unit
1. Check that the clock on the screen shows correct time. Adjust the time and date, if
necessary.
NOTE: The B40/B20 can’t be acted as the TIME MASTER in network. You should adjust the
time and date from the central station.
"
3.2.5 E-minC module with CO2 measurement
1. Block the tip of the sampling line with your finger and check that the message ‘Sample
line blocked’ appears on the monitor screen within 30 seconds. Remove your finger from
the tip of the sampling line.
2. Detach the Mini D-fend and check that the message ‘Check D-fend’ appears on the
monitor screen within 30 seconds. Install the D-fend to the monitor again.
3. Breathe to the sampling line briefly. Check that the CO2 information is updated on the
screen.
"
3.2.6 Multiparameter Hemodynamic Modules
ECG and RESP measurements
1. Connect an ECG cable to the module. Connect the cable leads to a patient simulator.
2. Configure the Resp waveform field to the monitor screen.
3. Select Resp rate source to Imped.
Others -> Resp Setup -> Resp Rate Source
4. Check that all ECG and impedance respiration information is shown on the monitor
screen as configured on the simulator.
5. Turn the simulator off. Check that the “Asystole” and “Apnea” messages are displayed.
"
3-14

Installation checkout
Temperature measurement
6. Check the temperature channels with a patient simulator.
Check that temperature measurement information is shown on the monitor screen as
configured on the simulator.
"
Invasive blood pressure measurement
7. Check the InvBP channels with a patient simulator.
8. Zero the InvBP channels and check that the values and waveforms correspond to the
simulator settings.
"
SpO2 measurement
9. Connect an SpO2 finger probe to the module. Check that the message ‘Probe off’ is shown
when the probe is not connected to a finger.
10. Attach the SpO2 probe to your finger. Check that a reading of value and a pleth
waveform appear on the screen
"
Non invasive blood pressure measurement
11. Connect and set up the NIBP integrated tool as following picture, ensure all the
connections made are leak-proof.
12. Enter NIBP menu: NIBP - NIBP Setup. Select Calibration Check and push the Trim Knob.
13. Pump the following pressures to manometer and check the difference between the
manometer and monitor pressure display (The zeroing offset is automatically subtracted
from the pressure readings).
3-15

Table 2 NIBP calibration check pressures
Pressure Max. error Example

0 mmHg ±5 mmHg (=zero offset) -1
100 mmHg 100 ±2 mmHg 100 ±2
200 mmHg 200 ±3 mmHg 200 ±3
There is reading of B1 and B2 in help filed under NIBP calibration menu. If the error of pressure
channel B1 is larger than specified above, contact to the qualified person to do calibration.
"
3.2.7 Recorder
1. Press the Recorder Start/Stop key and check that the module starts recording the
selected waveforms. Press the Recorder Start/Stop key again to stop recording.
2. Check that the quality of the recordings is acceptable.
"
3.2.8 Network connection
1. Check that the CAT-5 cable connector is clean and intact, then connect it to the Network
connector on the backside of the monitor.
Check that the monitor connects to the network, i.e. the network symbol appears on the
upper right-hand corner of the screen.
NOTE: Pre-configure the network when install the monitor.
"
3.2.9 Final
• Power off the monitor
• Perform final cleaning
• Fill in all necessary documents
"
3-16

Maintenance and checkout
4 Maintenance and checkout

These instructions include procedures for maintenance and checkout for the B40/B20. The
maintenance should be performed every 12 months.
These instructions include “Maintenance and checkout form, B40/B20”, which to be filled in
when performing the corresponding procedures.
4.1 Visual inspection/preparation

4.1.1 Before beginning
NOTE: Wear a static control wrist strap when handling PCB boards. Electrostatic discharge
may damage components on the board.
• Save the patient data and monitor settings if necessary.
• Make sure that the monitor is turned off.
• Disconnect the mains power cord.
• If the monitor is connected to the network, disconnect the CAT-5 cable from the monitor.
4.1.2 General
1. Check that all parts are intact and that the cables and screws are connected and
tightened properly. Check the connector pins are intact. Check the front cover and the
front panel sticker are intact.
2. Check that the modules go in smoothly and lock up properly.
3. Check the ventilation holes of the monitor and clean of dust if necessary.
4. Check the module and applied parts are clean.
"
NOTE: Batteries are recommended to be conditioned every six months.
4.2 Functional inspection

4.2.1 General
1. Connect the mains power cord
Check that the Mains power LED is lit.
2. Switch the monitor on.
Check that the monitor starts up properly
− The red, yellow and cyan alarm lights are lit momentarily
− The loudspeaker gives an audible beep
− The normal monitoring screen appears and no error messages on the screen.
3. Check that the monitor goes to battery use if the main cord is disconnected.
"
3-17

4.2.2 Display
1. Check that the image on the screen is correct
2. Check the display brightness
Select
Monitor Setup
Display Brightness
Push the Trim Knob and check that the display brightness follows the selected brightness.
"
4.2.3 Keyboard(s)
1. Tests with the Command Board:
− Enter the service menu:
Monitor Setup - Install/Service (password 16-4-34) -
Service (password 26-23-8) - Keyboard
− Check the keys and Trim knob one by one.
"
4.2.4 Time and date
− Check that the clock on the screen shows correct time.
Readjust the time and date, if necessary.
Monitor Setup - Time and Date
NOTE: The B40/B20 can’t be acted as the TIME MASTER in network. You should adjust the
time and date from the central station.
"
4.2.5 Hemo Module
ECG measurement
• Configure ECG settings in monitor:
ECG - > ECG1 Lead: II; ECG2 lead: V1; ECG3 lead: aVL; ECG Size: 1.0
- >ECG Setup - > Beat Sound Volume: 1 or greater; Pacemaker: Show; HR Source:
Auto
• Configure ECG settings in simulator:
ECG rhythm: a normal sinus rhythm
heart rate: 80 bpm
Amplitude: 1 mV
1. Normal Sinus Rhythm
− Check that the monitor displays the ECG leads II, V1 & aVL and the waveforms are
noise-free. The monitor shall display a 80±5 bpm heart rate and an audible QRS
tone sounds with each QRS complex.
"
3-18

2. Pacemaker Detection
− Configure the simulator to output "Asynchronous Pacemaker Pulse"
− Check that pacemaker spikes are shown on the ECG waveform.
"
3. Asystole Detection
− Configure the simulator to output "Asystole".
− Check that the 'Asystole' alarm appears to the monitor screen.
− Configure the simulator to show "80 beats per minute, Normal Sinus Rhythm".
"
4. Leads Off Detection
− Detach the RA/R leadwire from the simulator.
− Check that the Lead II waveform disappears from the ECG1 waveform field and a
message 'RA/R lead off'' is shown momentarily.
− Check that Lead II is replaced by Lead III in the ECG1 waveform field after a while
and a message 'Lead changed' is followed by a message 'Learning'.
− Reconnect the RA/R leadwire to the simulator.
− Check that Lead III is replaced back to Lead II in the ECG waveform field.
"
Respiration measurement
• Configure RESP settings in monitor:
Set up the Resp waveform field to the monitor screen. And
Others -> RespSetup -> Resp Rate Source: Imped
- > Measurement: ON
• Configure RESP settings in simulator:
Baseline impedance: 1000
Amplitude: 1
Respiration rate: 20 breaths per minute
Lead selection: II (or LL)
5. Respiration Rate
− Check that the RESP waveform is shown and the RR value is 20 (±5).
− Configure the simulator's Apnea Simulation to "32 sec".
"
6. Apnea Detection
− Check that the monitor activates the Apnea alarm.
− Configure the simulator's Apnea Simulation to "OFF"
"
Temperature measurement
• Configure the “T1+T2” digit field to the monitor screen.
3-19

• Configure the simulator’s temperature channels as follows:

Temperature : 37 °C/98.6 °F
7. Temperature detection
− Check the corresponding temperature value appears and that no error messages
are shown on the monitor screen.
NOTE: If the deviation on a temperature reading on the screen is more than 0.1°C,
calibrate the temperature channels according to the instructions in chapter
“Temperature calibration”.”
"
Invasive blood pressure measurement
• Configure the simulator’s IBP channels as follows:
Sensitivity: 5 µV/V/mmHg
InvBP outputs: " 0 mmHg static pressure" or "atmosphere"
8. Zeroing
− Press IBP Zero All key.
− Check that a message "Zeroing" followed by a message "Zeroed" is shown in the IBP
parameter window.
"
9. Static Pressure
− Configure the simulator's InvBP output to "200 mmHg static pressure".
− Check that the flat pressure line appears on the related waveform field. The reading
in the parameter window shall be 200 ±10 mmHg.
NOTE: Recalibration is needed, if the measured value is not within the specification
limits. Calibrate the invasive pressure channels according to the instructions in
“Invasive pressure calibration” section.
"
10. Pressure Waveforms
− Configure the simulator's InvBP output to "Arterial 120/80".
− Check that the pressure waveform for tested invasive pressure channel appears in
the IBP waveform field and the Sys/Dia (Mean) pressure values are shown in the
related parameter window.
"
SpO2 measurement
11. Test measurement
Connect the SpO2 probe onto your finger. Check that the reading of 90-100 and SpO2
waveform appears. Check that the HR value is calculated from SpO2 when ECG and InvBP
(IBP1 or Art) are not measured.
NOTE: a functional tester cannot be used to assess the accuracy of a pulse oximeter probe or a
pulse oximeter monitor
3-20

"
Non Invasive Blood Pressure measurement
• Connect and set up the NIBP integrated tool as following picture, ensure all the
connections made are leak-proof.
12. NIBP Leak Test

− Enter the NIBP Calibration in service menu:
Parameters - NIBP - Calibrations
− Select Active Leak Test: ON
NOTE: The module pumps a pressure of about 290 mmHg and then the pump stops.
The max pressure in Adult mode is about 290 mmHg, but in Infant mode only 140
mmHg.
− Wait for 15 seconds for the pressure to stabilize then check that the pressure does
not drop more than 6 mmHg per one minute.
"
13. NIBP calibration
− Calibrate the Non-invasive blood pressure (NIBP) channel according to the
instructions in “NIBP calibrations” on page 3-24 section.
"
14. NIBP hose detection
− Disconnect the calibration setup
− Attach an infant NIBP cuff hose without cuff identification.
− Press the NIBP Start/Cancel key. The monitor shall automatically open the
selections NIBP Setup - Inflation Limits to user to manually select the inflation
limits.
"
3-21

4.2.6 Loudspeaker
Check the loudspeaker by setting the alarm volume:
Alarms Setup
Alarm Volume
Test the whole volume scale from 1 to 10 by turning the Trim Knob and check that the
alarm volume changes correspondingly. The alarm sound should be clear and audible
with all the settings.
"
4.2.7 Monitor software
Enter the service menu:
Monitor Setup
Install Service (Password 16-4-34)
Service (Password 26-23-8)
Take down the information regarding Monitor software.
"
4.2.8 Watchdog circuitry
Select:
Monitor Setup
Set/Test
Perform the tests WATCHDOG and WD BY OVERLOAD. Check that the monitor restarts in
each case.
NOTE: When selecting WD BY OVERLOAD, auto restarting should take place
approximately after 10 seconds.
"
4.2.9 Batteries
1. Check battery limits
Enter the BATTERY service menu:
Monitor Setup
Frame
Power Supply
WPM Battery
Smart Batt1
Smart Batt2
3-22

Check that all values are within reasonable limits.

NOTE: In order to update values for a desired battery, disconnect the other battery
shortly.
2. Battery operation
Disconnect the power cord (without switching the monitor to standby).
Check that the monitoring continues normally. Check also the Command board LEDs:
- the green mains power LED is off
- the green battery LED is on
- the orange battery LED is off
3. Battery charging
Reconnect the power cord.
Check that the monitoring continues without problems. Check also the Command board
LEDs:
- the green mains power LED is on
- the green battery LED is off
- the orange battery LED is on or off continuously (not blinking)
"
4.2.10 Network
− Connection to network
Check that the CAT-5 cable connector is clean and intact, then connect it to the monitor.
Check that the monitor connects to the network, i.e. the network symbol appears in the
screen.
"
4.2.11 Final cleaning
Switch off the monitor and perform final cleaning.
Fill in all necessary documents.
"
3-23

5 Adjustments and calibrations

NOTE: Use only properly maintained, calibrated and traceable measurement equipment for
the specified calibrations and adjustments to ensure accuracy.
5.1 NIBP calibrations

NIBP calibration shall be performed:
• Each time planned maintenance is performed.
• Each time corrective maintenance is performed.
• If the measured value is not within the specification limits.
Calibration check
• Refer to the “Non Invasive Blood Pressure measurement” on page 3-21 in installation
checkout section for NIBP integrated tool set up.
1. Enter Calibration menu:
Monitor Setup - Install/Service (password 16-4-34) -Service (26-23-8) - Parameters -
NIBP - Calibrations
Calibration
Active Leak Test OFF
Calibration Check OFF
Protection OFF
Calibrate
Previous Menu
2. Select Calibration Check and push the Trim Knob.

3. Connect an external precision manometer to the module.
4. Pump the following pressures to manometer and check the difference between the
manometer and monitor pressure display (The zeroing offset is automatically subtracted
from the pressure readings).
Table 3 NIBP calibration check pressures
Pressure Max. error Example

0 mmHg ±5 mmHg (=zero offset) -1
100 mmHg 100 ±2 mmHg 100 ±2
200 mmHg 200 ±3 mmHg 200 ±3
3-24

Adjustments and calibrations
There is reading of B1 and B2 in help filed under NIBP calibration menu. If the error of pressure
channel B1 is larger than specified above, the module should be recalibrated. The error of B2 is
allowed to be even twice as large because it has no effect on blood pressure measurement
accuracy. However, we recommend recalibrating the module when the error of B2 is larger
than specified above to ensure best possible operation.
Calibration
1. Enter Calibration menu.
2. Remove the hoses from the front panel connector to enable proper zeroing.
3. Select Calibrate. If it is not available, perform the steps a and b.
a. Select Protection OFF in the Calibration menu and push the Trim Knob.
b. Menu selection Calibration is now enabled, and Protection is disabled.
• Start calibration by pushing the Trim Knob. Messages ‘Zeroing’ and ‘Zeroed’ will be
displayed in the NIBP message field. After this, a pressure bar and text ‘Calibrating’ will be
displayed.
• Connect an external mercury manometer with a pump to the module through the both
tubes of the hose - both transducers B1 and B2 must be calibrated simultaneously. Pump
up to a pressure of about 200 mmHg according to the manometer. Calibration is possible
in the range of 150 to 250 mmHg.
• Verify that both pressure values in the prompt field match the manometer reading. If not,
adjust by turning the Trim Knob. When the values of the pressure bar and the manometer
are equal, push the Trim Knob to confirm the calibration. The message ‘Calibrated’ will be
displayed on the NIBP digit field after a few seconds, which means that the calibration
succeeded, and the new calibration data is saved in EEPROM.
NOTE: When calibrating NIBP, always change the displayed pressure value slightly with the
Trim Knob, even in cases where the value would be correct. For example, change the value one
step higher and then back one step lower. ‘Calibrated’ text should appear in the display. This
ensures that the calibration procedure is correctly registered and stored by the module.
• To set the protection on:
Select Protection ON and push the Trim Knob. Then press NIBP module buttons Auto
ON/OFF and Start Cancel simultaneously for 3 seconds.
• Remove the module from the frame and plug it back again. Then perform “Calibration
check” (see the preceding page) to verify the new calibration.
5.2 Temperature calibration

Temperature calibration shall be performed:
• If the temperature test values differ for more than ±0.1 °C.
• After STP board replacement.
1. Connect the TEMP accessories to the monitor, use P/N 884515-HEL Temperature
calibration plugs
2. Enter STP Module service menu.
Monitor Setup - Install/Service (password 16-4-34) - Service (password 26-23-8) -
Parameters - STP.
3. Enter Calibrations menu.
4. Choose Protection OFF in protect mode.
5. Select Calibrate T1/Calibrate T2.
3-25

6. Insert calibration plug (25 °C) into T1/T2 connector.

7. Push the Trim Knob.
8. Insert calibration plug (45 °C) into T1/T2 connector.
9. Push the Trim Knob.
10. Choose Protection ON in protect mode.
5.3 Invasive pressure calibration

IBP calibration shall be performed:
• When the pressure transducer (probe) is replaced with a different type of transducer.
• When the measured value is not in the acceptable specification.
• After STP board replacement.
NOTE: Before starting invasive pressure calibration, disconnect all patient cables and discharge
the patient.
1. Connect the IBP accessories to the monitor, use a pressure manometer with a pressure
pump
2. Enter STP service menu.
Monitor Setup - Install/Service (password 16-4-34) - Service (password 26-23-8) -
Parameters - STP.
3. Enter Calibrations menu.
4. Choose Protection OFF in protect mode.
5. Connect a pressure transducer with a pressure manometer to the P1/P2 connector.
Choose Calibrate P1 or Calibrate P2. Leave the transducer to room air pressure.
6. Push the Trim Knob to start zeroing.
7. Supply a pressure of 100 mmHg to 300 mmHg to the transducer. The recommended
pressure is 200 mmHg.
8. Set the pressure on the display to match the pressure reading on the manometer and
push the Trim Knob. A tolerance of ±1 mmHg is allowed.
9. The message ‘Calibrated’ will be displayed on the display.
10. Choose Protection ON in protect mode.
3-26

4 Troubleshooting
Introduction
1 Introduction
If a problem occurs during the functional examination, check the components of the monitor
according to the below troubleshooting table. If the problem persists, please refer to the
following detail troubleshootings.
Problem What to do
Nothing functions Unplug and re-plug the Power Cord. Also confirm that the cable is intact.
Confirm that the fuses are intact.
Hemo module does not Remove and replace the Hemo module.
function Confirm that the desired parameters are configured to be displayed.
E-miniC module does Confirm that ‘Calibrating Gas Sensor’ messages are not displayed.
not function Confirm that a D-fend water trap and a sample tube are attached.
Confirm that the desired parameters are configured to be displayed.
Remove and replace the module.
Network does not Refer to 1.5. Connection to Network section in Installation chapter about
function network’s configuration.
4-1

1.1 General troubleshooting

Disconnect the mains power cord and
No picture on screen
remove the batteries.
Check the batteries charging

Connect the mains
levels by pressing the test
power cord
buttons on the batteries.
Insert only one battery with 2 or

more capacity leds illuminating.
Front panel green Press the ON/OFF key.
No Replace fuses
mains power LED lit?
Front panel green

Yes
Yes
battery LED lit?
Mains power
DC/DC SW functioning
LED lit?
No
No
Yes
Disconnect the mains

Possible AC/DC unit
power cord and batteries.
failure. Replace the Power board failure
Reconnect and press the
AC/DC unit.
ON/OFF key.
Yes
Mains power
No
LED lit?
Wait for about 1 minute

Normal start-up sound
and press the NIBP auto
and the alarm LEDs turn Yes
on and off? ON/OFF key, NOTE: NIBP
cuff must be connected
NIBP pump starts

Main CPU board may be
pumping and SpO2 No
No
probe’s red LED lit? faulty.

Yes
Possible key board or CPU Display failure. See Frame

failure. See Frame troubleshooting in this
troubleshooting in this chapter. chapter.
4-2

Introduction
1.2 Software troubleshooting chart
Download the software Check the software CD whether

from software CD onto the can run in the PC normally and
CPU board try to download the SW again.
Turn the power on. OK?
No
Wait for 80
seconds. Try with another
No
software CD to
download again. Please
read the note below.
Start-up display
No
appears?
OK? Yes
Yes
No
Has the information

regarding monitor software
been updated on the
Replace the CPU
Service View? board and try again. Yes
Yes
Perform factory reset.
NOTE:
The software CD may be
defective, or all available
software has already been
downloaded before.
4-3

2 Frame troubleshooting
Problem Cause What to do
Monitor is not starting. 1. The batteries are empty. 1. Connect the power cord.
2. Fuses may be blown. 2. Replace fuses.
3. If power cord connected, AC/DC 3. Replace the AC/DC power unit.
unit may be faulty.
4. If AC/DC unit is working, the 4. Replace the power board unit.
power board may be faulty.
5. On/Stby key may be faulty. 5. Replace the command board
panel keyboard foil.
Monitor is not starting. 1. The connection between power 1. Check connection between power
board and CPU board may be board and CPU board.
faulty.
2. Faulty CPU board. 2. Replace the CPU board.
The monitor starts (alarm beep 1. The LCD display cables are loose. 1. Check the LCD display connection
is heard), but the display board connectors.
remains black. 2. The backlights are not lit. 2. Check backlight connector. Check
inverter cable.
Backlights may be faulty. Replace
the backlights.
Backlight Inverter may be faulty.
Replace the Inverter board.
Display and monitor operating 1. Loudspeaker connector or wires 1. Check loudspeaker connector and
but no audible beep in start-up. loose or faulty. wires.
Display is too dim. 1. Incorrect brightness adjustment. 1. Adjust display brightness higher.
2. Backlight faulty. 2. Check inverter cable.
3. Backlight inverter faulty. 3. Replace backlight.
Stripes or white areas on screen. 1. Loose faulty display connection 1. Check display connection cable in
cable in CPU and display. CPU and display.
Module data disappears from Parameter module current (in Detach and change parameter
the screen. ‘Module power module bus) too high. module.
supply overload’ message.
Module data disappears. 1. Module bus voltage or signals 1. Replace module interface board.
path broken.
‘Battery failure’ message on the 1. Problem in communication 1. Replace battery.
screen. between battery and power
board.
2. Battery too old or defected. 2. Replace battery.
3. power board may be faulty. 3. Replace the power board.
4. Problem in communication
between power board and CPU
'Frame temperature high' The temperature inside the frame is Check monitor ventilation holes.
message. too high.
‘Battery temperature high’ Battery SMBus temperature is too Check monitor ventilation holes.
message on the screen. high. Replace battery.
4-4

Frame troubleshooting

After shut off, the trend and 1. The On/Stby switch has been 1. When switching off, the On/Stby
patient data does not remain 15 pressed over 10 s. (= service switch has to be pressed less than
min in the memory. reset) 10 s.
Keyboard not working, but Keyboard cables and connectors Check the membrane switch
module communication is OK. may be faulty. connection to the user interface
board.
Keyboard not working, and UPI section of the CPU board not Restart the monitor.
module communication not functioning normally. Replace the CPU Board.
working.
Keyboard partly not working. 1. Keyboard faulty. 1. Replace the membrane switch.
2. Keyboard cables and connectors 2. Check the membrane switch
may be faulty. connection to the user interface
board.
4-5

2.1 NET section troubleshooting

Monitor does not connect to Patch panel Patch cable not connected to HUB or to panel.
the network.
Patch cable Patch cable or connector defective.
Monitor connects to the
network, but disconnects HUB not connected to power supply.
unexpectedly (‘Network HUB port closed due to physical layer problems.
down: central serve’
message on the monitor HUB port temporarily closed and reopened due
screen). to physical layer problems.
HUBs not properly connected to each other.
Monitor-Network cable Cable not properly connected to the wallplate
or to the monitor.
Cable or connector defective.
Network cable (inside the Replace the Network cable - in FRU
monitor) defective 2053489-004.
External interface board Replace the External interface board - in FRU
defective 2053489-004.
Net section of the CPU board The NET section is defective. Replace the CPU
board.
NET section memory on the The SDRAM of the NET section is defective or
CPU board uninitialized. The NET cannot be used. See
network service page for details.
‘Check network connectors’ Monitor-Network cable Cable not properly connected to the wallplate
message shows on the or to the monitor.
monitor screen Cable or connector defective.
Network cable (inside the Replace the Network cable - in FRU
monitor) defective 2053489-004.
External interface board Replace the External interface board - in FRU
defective 2053489-004.
Didn’t properly set up “virtual Set up the virtual plug id in monitor.
plug id“
Network printing fails Print server is busy Network manager's print server is busy at the
moment and cannot take more print jobs. Try
again after 15 seconds.
Print queue is full There are too many unprinted documents
waiting in the print queue. Check the printer, as
it is not operating properly.
Printer is off-line Printer cable is loose, printer is out of paper,
there is a paper jam or the printer is simply
switched to off-line state.
4-6

Hemo Troubleshooting
3 Hemo Troubleshooting
3.1 Troubleshooting flowcharts
Some parameters All parameters not

not working working
Insert Hemo
module to a good
Go to service
monitor
menu
Yes Fault not in

Is it OK?
module
Is parameter No Select the right
No
configuration correct? configuration
Yes
Has module bus Replace flex
failed ? module bus
Yes
No
Refer to frame Has keyboard Yes
troubleshooting failed? Has NIBP board Replace NIBP
Yes failed? board
No
No
Fault not in a
module
Replace ECG Has ECG function
board failed?
Yes
No
Replace STP has STP function

board failed?
Yes Cuff loose
No
Start NIBP message Replace NIBP

NO without hose appears on board
screen?
has NIBP function

Yes
Yes
failed?
Measurement does
not work.
Yes
Leak test in
Pump check in
Yes Service Menu
Service Menu OK?
OK?
NO
No
Check pump
connector.
See error code

Chec.k tubes and
No
explanation in
Is it OK? connectors. Find
service manual
leak and fix it.
and fix it
4-7

3.2 NIBP
3.2.1 NIBP toubleshooting

No NIBP value displayed NIBP not selected on screen. Check monitor setup.
‘Weak pulsation’ message Weak or unstable oscillation pulses Check patient condition and retry.
due to: Check any leaks and retry.
• artifacts Use proper size of cuff. Check
attachment.
• weak pulse pressure due to
arrhythmias
• improper cuff position or
attachment
• too few pulses detected
• weak or unusual blood
circulation
• obese patient
Call service NIBP hardware error. See the description of the error message
‘Error X’ message X = error number. code.
‘Cuff loose’ message 1. Hose and/or cuff not connected. 1. Connect the hose and the cuff.
2. Hose and cuff connected.
Reasons:
- cuff loosely wrapped - Tighten the cuff.
- leakage inside the shield, in the - Check the tubings inside the shield
Patient connector panel or and Patient connector panel, fix if
tubings connecting to the necessary.
module
- leakage in cuff or hose - Replace cuff/hose.
- leakage inside module - Check internal tubing and fix if
necessary.
- pump does not work - Check pump connector; if OK,
replace the NIBP Pump Unit.
4-8


Air leakage 1. Hose or cuff leaking. Reasons: 1. Replace cuff
- cuff damaged - Replace cuff.
- cuff connector damaged - Replace cuff connector (if the fault is
in hose connector).
- O-ring damaged or missing - Replace O-ring.
- hose double connector damaged - Replace NIBP cuff hose.
2. Hose and cuff OK. Reasons: 2. Connect or replace tube
- leakage in the tubes connecting - Check the tubes.
the patient connector panel and
the module
- leakage inside the module - Replace the whole tubing.
- tube disconnected or damaged - Fix connections.
- manifold leaking - Replace the manifold.
- tubes or valve(s) damaged - Replace tubes/valve(s).
‘Unable to measure Sys’ Systolic blood pressure probably Automatic retrial with increased
message higher than the inflation pressure or pressure.
artifacts.
‘Cuff occlusion’ message 1. Cuff and/or hose occluded.
Reason:
- cuff tube kinked - Straighten tube.
- tubes inside the shield kinked - Straighten tubes.
- tubes inside module kinked - Straighten tubes.
- occlusion inside/outside module - Remove occlusion.
2. Cuff, hose, and tubes OK.
Reason:
- fault in pressure transducer - Replace the NIBP board.
- fault in A/D converter - Replace the NIBP board.
- faulty calibration - Check calibration.
‘Calibration not protected’ Calibration protection is set to OFF. Set the protection ON in the NIBP
message. Calibration menu.
4-9

3.2.2 NIBP error code explanation

Code Problem What to do
0 RAM test failure Change the NIBP board.
1 ROM checksum failure Change the NIBP board.
2 Pump on during idle or over current detected Check short circuits. Change the NIBP board.
3 Startup communication failure with safety CPU Change the NIBP board.
4 EEPROM protection is off Protect calibration by selecting Protection ON in
the NIBP calibration menu.
5 EEPROM read/write error Change the NIBP board.
6 Valve stuck closed during cuff typing Try to remeasure. If the problem persists,
recalibrate. If the problem still persists, change
the NIPB board.
7 Could not save calibration data Reset the module and recalibrate. If this does not
help, change the NIBP board.
8 PT2 higher than 150 for greater than 15 seconds Check short circuits. Change the NIBP board.
while idle
9 Determination time too long Automatic recovery.
10 RTK 400Hz timer re-entry Change the NIBP board.
11 RTK 50Hz timer re-entry Change the NIBP board.
12 Not in use Not in use.
13 RTK overrun Change the NIBP board.
14 Too early AUTO START according to module Reset the monitor.
check
15 Calibration data invalid on initialization or unit Recalibrate. If this does not help, change the
never calibrated NIBP board.
16 Communication timeout between main and Check short circuits. Change the NIBP board.
safety CPU
17 Safety CPU report communication timeout Check short circuits. Change the NIBP board.
18 Wrong message rate in communication between Check short circuits. Change the NIBP board.
main and safety CPU ><+2% (480 msg/s)
4-10

3.3 ECG
HR numerical display No heart rate available. If no ECG waveform, check LEADS OFF
shows ‘---’ message and connect the leads.
If ECG waveform exists, check heart rate
source e.g. in the ECG Setup menu behind
ECG key.
Unacceptable ECG Poor electrode or poor electrode skin Electrodes from different manufacturers
waveform contact. are used. /Too much/little gel is used.
Poor electrode condition. Electrodes are dried out.
Improper site of electrodes. Check that electrodes are not placed over
bones, active muscles, or layers of fat.
Improper skin preparation. Remove body hair. Clean attachment site
carefully with alcohol.
Improper bandwidth filter. Check filter.
Faulty/ dirty ECG cable. Change new cable.
No ECG trace Waveform not selected on screen. Press the Monitor Setup key and make
adjustments.
Module not plugged in correctly. Check the hemo module’s installation.
Noise-message High frequency or 50/60 Hz noise. Isolate noise source.
4-11

3.4 Impedance respiration

No resp trace Waveform not selected on the screen Press the Monitor Setup key and
make adjustments.
Module not plugged in correctly Check the hemo module’s installation.
Unacceptable resp Poor electrode or poor electrode skin Electrodes from different
waveform contact manufacturers are used. Too
much/little gel is used.
Poor electrode condition Electrodes are dried out.
Improper site of electrodes Check that electrodes are not placed
over bones, active muscles, or layers of
fat.
Improper skin preparation Remove body hair. Clean attachment
site carefully with alcohol.
Faulty/ dirty ECG cable. Change new cable.
APNEA message, and Respiration source is CO2 Check respiration source and change it
respiration waveform to correct one.
normal
4-12

3.5 Pulse oximetry (SpO2)

Message ‘NO PROBE’ No sensor connected to the module Check sensor connections.
SpO2 connector.
Sensor faulty. Change the sensor.
Flat cable connecting the SpO2 Check the Flat cable, replace if
connector to the STP board loosen or necessary.
broken.
Message ‘PROBE OFF’ Unsuitable site. Try another site.
though sensor properly
Sensor faulty. Try another sensor.
attached to the patient
Sensor connection cable not Connect the cable to sensor.
connected to sensor.
Finger sensor falls off Sensor is slippery. Wipe with 70% isopropyl alcohol and
allow drying.
Finger is too thin or thick. Try other fingers, or other sensor
types.
Weak signal artifacts Poor perfusion. Try another place.
Movement artifacts.
Shivering.
Message ‘CHECK PROBE’ Singal quality is too low to perform Check probe condition or try another
SpO2 measurements. sensor.
Message ‘FAULTY PROBE’ Sensor is faulty. Change the sensor.
No SpO2 No waveform selected on screen. Check the selected SpO2 waveforms by
pressing Monitor Setup key and
selecting Screen Setup - Waveform
Fields.
Wrong configuration setting. Check the configuration settings from
the STP/Calibrations menu (Monitor
Setup - Install/Service - Service -
Parameters)
4-13

3.6 Temperature
No temperature displayed Wrong type of probe. Use correct probe.
Temperature out of measurable range. The range is between 10 and 45 °C.
Temperature calibration not protected. Set the protection ON in the Service
Menu.
3.7 Invasive blood pressure

Abnormally low pressure Transducer wrongly positioned. Check mid-heart level and reposition
transducer.
No pressure Defective transducer. Check transducer.
‘Not zeroed’ message No pressure module plugged in. Check the module.
No waveform selected on screen. Check the selected pressure
waveforms by pressing Monitor
Setup key and selecting Screen Setup
- Waveform Fields.
Check that the pressure transducer is
open to the patient.
Wrong configuration setting Check the configuration setting from
the STP/Calibrations menu (Monitor
Setup - Install/Service - Service -
Parameters).
Measurement on, channel not zeroed. Zero the channel.
Invasive pressure Patient case is active Discharge a patient and make sure
calibration is not selectable that the hemo module does not receive
any signals from a simulator.
Out of range < - 40 mmHg Measurement pressure is beyond the Check the transducer level. Zero the
measurement range. channel.
Out of range > 320 mmHg Measurement pressure is beyond the Check the transducer level. Zero the
measurement range. channel. The patient may also have
high pressure.
Out of range Measured pressure is beyond the The waveform hits the top and the
internal measurement range of the numeric display not shown. Check the
module. transducer and its level. Zero the
channel.
4-14

5 Service Menu
Introduction
1 Introduction
The monitor has a Service Menu, which is a useful tool to examine monitor functions and to
troubleshoot in case a fault occurs.
1.1 Service Menu structure
Service Menu
SW Download
SW Settings
Country Settings
UMBC Board
Frame Memory Dri Config

Unity Config
Dri Comm
Network TCP/IP Config
TCP/IP Config
WLAN
WLAN
Power Supply WPM Battery
Keyboard Keyboard Log
Parameters Gas Unit General

Gases
ECG ECG Setup
STP Calibrations
NIBP Calibrations
Set/Test
Safety Valve
SpO2 Pneumatics
Service Log
5-1

1.2 Service Menu

NOTE: The Service Menu pictures are for reference only. Details on the menu page can vary
depending on the software version and the module type in use. If a particular selection is not
available in your system, the selection is shown grayed.
1. Press the Monitor Setup key.

2. Select Install/Service (password 16-4-34). Service Menu Sw version / Unit id
3. Select Service (password 26-23-8).
Frame Main Software ---------------------------------
keyboard LX/VSP_0.10
BootStrap software ---------------------------
Parameters
B40_BOOTSTRAP_0.6
Set / Test UBoot softeware --------------------------------
B40_UBOOT_0.8
Service Log
Linux kernel -----------------------------------
Scroll Vers B40_OS_0.8
File system -----------------------------------------
Record Vers
B40_FS_0.5
Clear Password UMBC software ---------------------------------------
Previous Menu B40_UMBC_0.5
CPU serial number: ------------------------------
92114469
CPU test date: -- code: --- level: ---
2008-09-02 M1008748 06
PMC version --------------------------------------
5-2

Frame
2 Frame
The Frame menu includes frame-specific service
menus. Service Menu Sw version / Unit id
Frame
----------------------------
SW Settings
----------------------------
UMBC Board
Memory ----------------------------
Network ----------------------------
Power Supply
----------------------------
Previous Menu
----------------------------
----------------------------
number:-----------------
200
----------------------------
2.1 SW Settings
SW Settings
SW Download
Country Settings
Previous Menu
5-3

2.1.1 SW Download
This menu is not used, for software download,
please refer to the Appendix for instruction. SW Download
Enable SW
CPU serial number 1200596
Eth TCP/IP Address 194.9.230.170
Previous Menu
Selecting this enables

Software download and enters
in software download mode.
2.1.2 Country Settings

The language submenu allows you to select and
delete language files. SW Settings
National reqs: Select software features that
include national requirements. Country Settings
Power Frequency: Set the power frequency (50/60 Languages
Hz). This setting is used to filter out possible power
frequency interference from parameter National Reqs None
measurements. Power Frequency 60Hz
Time Format: Set the time format of the real-time Time Format 24 h
clock (12 h or 24 h). Previous Menu
Load laguages and change

current language.
5-4

Frame
Languages
Language
Select a language to be used during monitoring. Country Settings
NOTE: Service pages will always appear in English despite Languages
of this selection.
NOTE: For language codes, see the table below. Language ENG.LNG
Load from Card Load from Card ENG.LNG
Not used. Please use the software download CD to Delete Language POR.LNG
download the languages, refer to the Appendix for detail
Previous Menu Cancel
instructions.
Delete Language
Delete a language file from the permanent memory of the
monitor.
Change language translation of

screen texts from currently
available language files.
Table 4 Language abbreviations in language file names
Abbreviation Language
CHI Chinese
CZE Czech
DAN Danish
ENG English
FRE French
GER German
HUN Hungarian
ITA Italian
NLB Dutch
NOR Norwegian
POL Polish
POR Portuguese
RUS Russian
SPA Spanish
SWE Swedish
TUR Turkish
5-5

2.2 UMBC Board

Only for R&D purpose.
2.3 Memory
A service menu to check the status of the
memory used in the CPU board of the monitor. Memory Service Data
Test Memory tests the condition of the Test Memory EEPROM/ Flash
EEPROM/Flash memory component of the CPU
Test SRAM Test ?
board. If the result of the test is Fail, see section
“Error messages” in chapter “CPU.” Previous Menu
Test SRAM tests the Static RAM memory of the Static RAM
CPU board in a similar way as the
Test ?
EEPROM/Flash memory. If the result of the test
is Fail, see section “Error messages” in chapter
“CPU.” Real - time clock OK
Real-time clock test is run at every start up and
also during the operation of the monitor. If the
result of the test is Fail, the battery for the SRAM
timekeeper should be replaced.
5-6

Frame
2.4 Network
2.4.1 Network
For setting the monitor’s network mode: S5/Unity
The Network Status view shows the general status of the network
Frame Frame
Network Config Network Config

Network S5 Network Unity
Dri Config Unity Config
Dir Comm TCP/IP Config
TCP/IP Config WLAN
WLAN Previous Menu

Previous Menu
Push to select network type Push to select network type
2.4.2 Dri Config (in S/5)

The DRI Level: For setting the monitor's network
Network Config
communication. The network communication needs
match to the iCentral’s configuration Dri Config
Virtual Plug ID: For setting the same plug ID as in
Dri Level 2003
iCentral’s.
Transfer Mode: For choosing the transfer mode: Virtual Plug ID 7978
DRI/ETH or DRI/UDP Transfer Mode DRI/ETH
Debug server IP: For R&D purpose only.
Debug Server IP
Software download: For setting software download
capability. Software Download Enabled
Save Changes: Select "Save Changes" to take in use Save Changes

changes made in this page.
Previous Menu
Push to select DRI Level
5-7

2.4.3 Dri Comm (in S/5)

Session layer
Dest. name shows the name of the Central Session layer Session Socket 1 Status
the monitor is connected to. Dest. name CENTRALMSF
Socket 1
Dest. id shows the Central Subnet. Dest. id Central Subnet 1
Socket 2 Dest. address 0a:1a:00:00:03:bb
Dest. address shows the MAC address of
the monitor network NIC in Central. Socket 3 Protocol special situations:
Socket 4 Tx resent critical 0
Rx non-critical duplicate 0
Protocol specific situations:
Previous Menu Rx critical duplicate 0
For R&D purpose only. Rx non-critical with wrong msg num 1
Tx resent critical Watchdog traffic disconnect 0
Missing ack disconnect 0
Rx non-critical duplicate
Protocol errors 1
Rx critical duplicate
Rx non-critical with wrong msg num
Watchdog traffic disconnect
Missing ack disconnect
Protocol errors.
Ethernet
The Ethernet Status view shows the
Ethernet Ethernet Status
general status of the ethernet network Previous Menu Driver DP83907
communication. Cable Connected
Driver: Ethernet chip name. Ethernet Addt 00:40:97:0b:01:fb
Speed (bits/s) 0
Cable: Indicates if the ethernet cable is
connected. Statistics In Out
EthernetAddr: Monitor’s ethernet address. Packets 2527 11327
Bytes 297776 9837268
Speed: Indicates the current ethernet
communication speed. Data errors
The service data related to the ethernet CRC Frame Transm. BER
status view is described in the following 0 0 0 0
table. Hardware errors
Intern. Missed FIFO Overrun
0 0 0 0
5-8

Frame
Table 1 Ethernet service data
Value Usage Notes

Received packets (Statistics Total number of received packets since
In/Packets) last cold start.
Transmitted packets (Statistics Total number of transmitted packets
Out/Packets) since last cold start.
Received bytes (Statistics Total number of received bytes since
In/Bytes) last cold start.
Transmitted bytes (Statistics Total number of transmitted bytes since
In/Bytes) last cold start.
CRC errors (CRC) Number of received packets with
incorrect checksum.
Frame errors (Frame) Number of received packets with Refers to physical layer
incorrect frame structure. problems. An erroneous packet
has often both frame and CRC
errors.
Transmission errors (Transm.) Number or errors in packet
Transmission.
BER errors (BER)
Internal errors (Intern.) Internal error of the network board. Must always be 0.
Missed packets (Missed) Number of received packets lost due to Must always be 0.
overload.
FIFO errors (FIFO) Internal error of the network board. Must always be 0.
Overrun errors (Overrun) Practically the same as above. Must always be 0.
5-9

2.4.4 Unity Config (in Unity)

Unit Name: It is used for setting the unit name in the monitor.
The default unit name is “X”. Network Config
Bed Name: It is used for setting the bed name in the monitor.
The default bed name is the last five characters of the MAC Unity Config
address, excluding the colon delimiter characters
RtClinMarking: It is used for tagging the following outgoing Unit Name X
packets with a DSCP marking of 26 (011010): realtime clinical Bed Name D0136
information (waveforms, parameters, alarms), Realtime
RtClinMarking 011010
network control information (time)
NonRtClin Marking 001000
NonRtClin Marking: It is used for tagging the following
outgoing packets with a DSCP marking of 8 (001000): NonRtNonClinMark 000000
non-realtime clinical decision support information (Admission, Software Download Enabled
Histories, Full Disclosure, Printing)
Save Changes
NonRtNonClinMark: It is used for tagging the following
outgoing packets with a DSCP marking of 0 (000000): Previous Menu
non-realtime, non-clinical decision support information
(Service, InSite)
Software Download: reserved for future use.
Push to edit unit name of the
Save Changes: It is gray if the changes have not been done to
Monitor.
the menu information.
NOTE: When save changes the monitor will require a restart.
2.4.5 TCP/IP Config
The TCP/IP Status view shows the general status

of the TCP/IP set up.
TCP/IP TCP/IP Status (Ethernet)
Data link: “NIC” for ehternet, “WLAN” for wireless.
The network set up indicates below if the Data Link: NIC
TCP/IP Confing
ethernet cable is connected. IP Address 172.16.1.54
Ping Subnet Mask 255.255.0.0
DHCP Status: “Disabled“ or “Enabled“ depending Gateway IP 172.16.254.254
on the DHCP status. Previous Menu DNS Server Not available
DHCP Server Not available
The DHCP status related information displayed SLP Not available
below.
DHCP Status: Disabled
Current State INIT REBOOT
Execution State INIT REBOOT
Lease Time 0:00:00
Time Left 0.00.00
Logins 0
5-10

Frame
TCP/IP config
DHCP: Disable/enable the DHCP mode. If the DHCP
enable, the IP address, subnet mask, default gateway
can’t be edited.
IP address: For setting the static IP address of monitor.
Subnet Mask: For setting the static subnet mask of
monitor.
Default Gateway: For setting the static default gateway
of monitor.
DNS Server: For setting the static DNS Server of monitor.
Speed and Duplex: For setting speed and dupliex of
monitor.
Save Changes: Close menu and save the current menu
information to permanent memory.
Cancel Changes: Close menu without saving changes
Ping
IP Address: For configuring the destination IP address for the ping command.
Ping: Enable the ping command by sending Internet Control Message Protocol (ICMP) echo request packets to
the target host and wait for an ICMP response. The response should be show in the Ping Status view.
2.4.6 WLAN
Reserved for future use.
5-11

2.5 Power supply

The menu shows the voltages and
temperature measured by the power board Power Supply Voltages Min Mean Max
ACDC 16.00 16.00 16.00
and CPU board. The values in the column
Power page EXTDC 0.08 0.08 0.08
under Mean are the mean values of last Bat1 12.00 12.00 12.08
one second, the Min column shows the WPM Battery Bat2 12.24 12.24 12.24
minimum mean value, and the Max column VSvs 15.92 15.92 15.92
Previous Menu
VBoost 15.61 15.61 15.61
the maximum mean value of the voltages VMod 0.00 0.00 0.00
and temperature measured during the 1/0 Mod 0.08 0.08 0.08
current power ON. +5V 5.04 5.04 5.04
+3.3 3.35 3.36 3.37
The voltages and currents are measured by Currents
Mod Current 0.31 0.33 0.39
the power Board, except the four lowest
Sys Current 0.87 1.23 1.34
under heading CPU Board A/D, which are Bat Current -0.03 -0.03 0.03
measured by the CPU Board. +5V and +3.3V Powers
System Power 18.58 18.87 19.38
values come thus both from the power Module Power 5.35 5.40 6.04
Board and CPU Board. System power and Temp C
Module power are calculated by the power Power 38.77 38.77 38.77
Therm Not CHG 0.00 32.40 32.40
Board. Dummy CHG 0.00 33.50 33.50
Voltages CPU Board A/D
CPU temp ( C ) 41.79 43.79 43.58
ACDC AC/DC converter’s output voltage, used as
VSvs Out V 15.52 15.52 16.15
monitor input voltage when the mains cord is +3.3V 3.25 3.25 3.36
connected. Range when present: 15.25…16.55V +5V 4.87 4.87 5.06
(Note: this includes the measurement
inaccuracy).
Bat1 Battery A voltage measured at power Board. Range 9…12.6V for Li-ION battery
Bat2 Battery B voltage measured at power Board. Range 9…12.6V for Li-ION battery
VSYS System voltage at power board. This is the monitor input voltage measured at the power board after input
voltage selection. Range 9…16.5V.
VBOOST Boost converter’s output voltage at power Board. Boost converter’s input is VSYS, which is raised to a
higher level for module bus voltage and battery charging, if needed. Range 14…16V.
VMOD Supply voltage for modules. VBOOST is fed through a circuit breaker to VMOD. Range 13.8…16V.
I/O_VMOD Module bus supply voltage that can be connected to Multi I/O Connector at the rear of the monitor.
Connecting depends on the power Board software. Range when connected: 13.8…16V
+5V At power board. Range 4.8...5.3V.
+3.3V At power board. Range 3.15…3.45V.
Currents
Mod Current Current from module bus voltage VMOD. Depends on the module configuration.
SYS Current Current from system voltage VSYS. Depends on the system configuration and battery charging.
Bat current Current from or to the battery selected (discharge or charge). Measured at power Board. Depends on
the system configuration and battery charging.
Powers
System power Power from VSYS, calculated by power Board software. System power = VSYS * SYS Current
Module power Power from VMOD, calculated by power Board software. Module power = VMOD * Mod Current
Temp
Power TempPower supply unit temperature, measured at power Board.
Therm Not CHGThis is subject to change.
Dummy CHGThis is subject to change.
CPU Board A/D
CPU TempTemperature measured at CPU Board.
VSYS_OUTVSYS that is connected to CPU Board and Backlight Inverter by a FET.
Measured at CPU Board. Range 9…16.5V.
+3.3VMeasured at CPU Board. Range 3.15…3.45V.
5-12

Frame
2.5.1 WPM Battery Batts Information Batt1 Batt2

WPM Battery Dev . Chem. LION LION
Batts Batts
Full Cap. (mAh)
Rem.Cap. (mAh)
4019
60
3909
2698
Rel .St. of CHG (%) 1 69
This page contains information related to the Smart Batt1 SMBUS
batteries and power supplies. The power Crrent (SMBUS mA) 2839 -1
Smart Batt2 Voltage (V) 11. 61 11. 69
supply part is practically the same as in Voltage (SMBUS mV) 10809 -1
Clear Temp Max
Power Page. Battery information includes ICHG High
Batt Temp ( C ) 32. 60 31. 90
also data measured by the smart batteries Previous Menu
Max Batt Temp (PMC) 32. 60 32. 20
themselves and transmitted to the power Max Batt Temp (SMBUS) 32. 60 32. 00
Board via SMBus. Temp ( C ) Min Mean Max
Power 35. 11 35. 90 35. 90
SMBus is System Management Bus, a CPU 40. 84 40. 94 40. 94
two-wire interface closely resembling IIC. Voltages (V)
ACDC 16. 00 16. 00 16. 00
SMBus is used for battery communication. ExtDC 0. 00 0. 00 0. 02
VSys 16. 00 16. 00 16. 08
Batts information section of the page has two Boost 15. 53 15. 53 15. 61
columns: Batt1 for battery A data and Batt2 VMod 15. 53 15. 59 15. 69
for battery B data. I/O-VMod 0. 00 0. 04 0. 04
Currents (A)
NOTE: Text ‘SMBus’ above Current (SMBus Batt 1. 04 2. 79 2. 84
Module 0. 00 0. 02 0. 02
mA) line shows which battery is connected to Sys 1. 65 3. 16 3. 16
the SMBus. Powers (W)
Sys 21. 38 48. 52 48. 52
Module 0. 00 0. 12 0. 06
Battery information
Dev. Chem. Device chemistry. B40/B20 monitor supports only Li-ION batteries.
Full Cap.(mAh) Full charge capacity of the battery; capacity of the battery when it is
fully charged.
Rem. Cap. (mAh) Remaining battery capacity.
Rel. St. of CHG (%) Relative state of charge of the battery. Expressed as a percentage of
Rem. Cap. (mAh) / Full Cap.(mAh).
Current (SMBus mA) Battery current (discharge or charge) measured by the battery,
transmitted via SMBus to power Board.
Voltage (V) Battery voltage measured at the power Board
Voltage (SMBus mV) Battery voltage measured by the battery.
ICHG Charging power level for charger hardware, this bit can have values
high or low. High is the normal setting, low is used when the power
Board software determines to limit the total power consumption of
the monitor by limiting the charging power (i.e. due to high
temperature).
Batt Temp (°C) Battery temperature. This is real time data for the battery connected
to SMBus.
Max Batt Temp (PMC) This is subject to change.
Max Batt Temp (SMBus)Maximum battery SMBus temperature from entering the service
pages. Max values are updated in real time for the battery
connected to the SMBus.
Other measurementsSee explanation in the previous power pages.
5-13

Smart Batt1
Battx information from SMBus (this information Batt1 information from SMBus
is received from the battery via SMBus) WPM Battery Temperature 30.75 C
Temperature: Battery temperature Batts Voltage 11903 mV
Current 0 mA
Voltage: Battery voltage Smart Batt1 Avg. Current 0 mA
Rel. State of Charge 97 %
Current: Battery current (discharge or charge) Smart Batt2
Abs. State of Charge 72 %
Clear Temp Maxs Remaining Capacity 2532 mAh
Avg. Current: Rolling average of the battery Full Charge Capacity 2604 mAh
current Previous Menu Cvcle Count 33
Design Capacity 3520 mAh
Rel. State of Charge: Relative state of charge of Design Voltage 11100 mV
the battery. Expressed as a percentage of Rem.
Manufacture Date(DD:MM:YY) 20/12/24
Cap. (mAh) / Full Cap.(mAh).
Abs. State of Charge: Absolute state of charge. Manufacture Name NPC A07A90
Device Name SM201-6
Expressed as a percentage of Rem. Cap. (mAh)/ Device Chemistry LION
Design Capacity (mAh). Therm. Status from charger
Remaining Capacity: Remaining battery

capacity (mAh).
Full Charge Capacity: Capacity of the battery
when it is fully charged.
Cycle Count: Number of cycles the battery has
experienced. A cycle is an amount of discharge approximately equal to the value of Design Capacity. The
exact value of cycle count threshold is stored in the battery permanent memory.
Design Capacity: Theoretical capacity of a new battery.
Design Voltage: Theoretical value for nominal voltage of a new battery.
Manufacture Date (DD:MM:YY) : The date the battery pack was manufactured.
Manufacturer Name: Acronym of the battery pack manufacturer name.
Device Name: Battery pack model name.
Device Chemistry: Battery chemistry of the cells used.
Therm. Status from charger: Status of the battery thermistor or code resistor read by Smart Battery
Charger IC. The thermistor or code resistor is always connected to the charger whenever the
corresponding battery is connected to the charger and SMBus.
5-14

Frame
Smart Batt2
If Smart Battx is selected for a battery NOT
Batt2 information from Memory and PMC
connected to the SMBus, the menu contains the
WPM Battery Rel. State of Change 0%
following:
Batts Remaining Capacity 0 mAh
Battx information from Memory and PMC (This Full Charge Capacity 0 mAh
Smart Batt1 Design Capacity 0 mAh
information comes from the power Board memory Design Voltage 0 mV
or is measured by the power Board. SMBus data in Smart Batt2
Manufacture Date (DD:MM:YY) 00/00/00
this menu is not real time, because this battery is Clear Temp Maxs
Manufacturer Name
not connected to the SMBus). Previous Menu Device Name
NOTE: This page may not contain information if Device Chemistry LION
SMBus has been connected only to the other DC/DC Board A/D
battery. Page can be updated by battery Batt1 Voltage 12.00 V
Batt2 Voltage 12.34 V
disconnection and reconnection, if desired. Batt Current -0.01 A
Rel. State Charge: Relative state of charge of the Batt Not CHG Temperature 32.24 C
battery. Expressed as a percentage of Rem. Cap.
(mAh) / Full Cap.(mAh).
Remaining Capacity: Remaining battery capacity
(mAh).
Full Charge Capacity: Capacity of the battery
when it is fully charged.
Design Capacity: Theoretical capacity of a new
battery.
Design Voltage: Theoretical value for nominal voltage of a new battery.
Manufacturer Date (DD:MM:YY): The date the battery pack was manufactured
Manufacturer Name: Acronym of the battery pack manufacturer name.
Device Name: Battery pack model name.
Device Chemistry: Battery chemistry of the cells used.
Batt1 Voltage: Battery A voltage measured at the power Board.
Batt2 Voltage: Battery B voltage measured at the power Board.
Batt Current: Battery current (discharge or charge) for the battery connected to SMBus.
Measured at the power Board.
Batt Not CHG Temperature: This is subject to change.
Clear Temp Maxs

This command is useful only when the WPM Battery Batts view is selected.
The Clear Temp Maxs command clears the maximum values of Batt Temp (SMBus) and
Batt Temp (PMC).
Note: Power temp and CPU temp maxs are not cleared.
5-15

3 Keyboard
3.1 Keyboard Keyboard Serivce Data
The service menu for testing the command board Message count 0
Upper Led Leds upper OFF lowe OFF
functions.
Lower Led Direct action keys
Upper Led is for testing the upper alarm light (red) on
Dummy Press Admit/ Pt. Data SpO2 ECG
the monitor. When the text is highlighted, the upper Dischar & Trends
alarm light can be turned on and off by pressing the Keyboard Log
NIBP Invasive Normal
Trim Knob. Previous Menu Pressures Screen
Lower Led is for testing the lower alarm light (cyan)
Monitor Print/
on the monitor. When the text is highlighted, the Setup Record
lower alarm light can be turned on and off by Airway Others Silence Alarms
pressing the Trim Knob. Gas Alarms Setup
Dummy Press is for testing the Trim Knob. When the Zero Auto Start Start
text is highlighted, pressing the Trim Knob creates a All On/Off Cancel Stop
sound from the loudspeaker and the corresponding
number on the service data field increases. Control wheel
Press 0
Clokwise 0 Counterclokwise 0
Service Data
Message Count counts the number of messages that are sent out to the main CPU board.
Leds upper and lower indicate the states of the alarm lights on the monitor.
Direct action keys texts are indications to the command board membrane keys. When a key
on the command board is pressed, the corresponding text in the menu changes its color.
Control wheel, Press counts the Trim Knob pressings.
3.1.1 Keyboard Log
Keyboard Scroll Log Keyboard Keyboard Log

All the keyboard presses and the commands Scroll Log
given by the Trim Knob are recorded in the Scroll Stat Keyboard : Keyboard Log
2004- Jan- 29 05:40:54
Keyboard Log. The keyboard log is saved in the
Record Log Service Menu : Keyboard
permanent memory of the monitor. The length 2004- Jan- 29 05:40:40
of the log is 80 events. The log is FIFO type. Record Stat
Display : Previous Menu
Scroll Stat enables to scroll the keyboard Reset Log 2004- Jan- 29 05:40:39
events. Service menu : Display
Previous Menu
2004- Jan- 29 05:40:11
Frame : Previous Menu
2004- Jan- 29 05:40:09
Network : Previous Menu
2004- Jan- 29 05:40:05
WLAN : Previous Menu
2004- Jan- 29 05:40:00
WLAN Config : Previous Menu
2004- Jan- 29 05:39:57
WLAN -More-
5-16

Parameters
4 Parameters
NOTE: Parameter values in Service Data fields are only for reference in this section.
Service Menu Sw version / Unit id

Parameters
----------------------------
Gas Unit
----------------------------
ECG
STP
----------------------------
NIBP
----------------------------
SpO2
Previous Menu ----------------------------
----------------------------
----------------------------
2, 2004-03-15
----------------------------
ode not set, 200
----------------------------
5-17

4.1 Gas Unit

4.1.1 General
Service Data
Module configuration shows which measurement
General Severice Data
options are available, i.e. are detected by the module. Previous Menu Module configuration
MiniC CO2 O2 N20 AA id p&v GasExch
Timeouts is a cumulative number that indicates how 1 0 0 0 0 0 0 0
many times the module has not responded to the
monitor's inquiry.
Bad checksums is a cumulative number that indicates 0 = not available
1 = available
how many times communication from the module to
monitor has broken down.
Bad c-s by mod is a cumulative number that indicates
how many communication errors the module has
detected.
The monitor starts counting these items at power up
and resets to zero at power off. The values may also be
reset when a module is attached to the monitor frame Timeouts -12867
Bad checksums 0
and be set to 32769 or continuous counting may be Bad c-s by moc 0
started when the module is removed from the monitor
frame.
The nonzero values do not indicate a failure, but the
continuous counting (more than 5 per second) or value
32769 indicates either a serial communication failure or
a module not in place. Also failures in other modules
may cause these numbers to rise or be set to 32769.
5-18

Parameters
4.1.2 Gases
Noise Meas activates the noise measurement.

Gases Serivce Data
Sample gain adj adjusts the sampling pump gain, i.e. OFF
for adjusting the sample flow Noise Meas % noise-% mv Gain
measurement. O2 --- --- --- ---
Sample gain adj CO2 0.00 300.0 2826 1.010
Pump ctrl A manual control for the sampling Pump ctrl
N20 --- --- --- ---
pump. AA1 A
Zero valve ctrl AA2 --- --- B ---
Zero valve ctrl A manual control for the zero valve. ID --- C ---
ID unrel. --- D ---
Previous Menu
MAC E ---
Sample Flow 148.7 Zero 0.0ml/min
Service Data Gain 1.000
Ambient 1013 Amb- Work 49.6mbar
CO2% field shows real-time concentrations. OFF Fall time CO2 --- 02 ---ms
CO2noise-% is standard deviation of CO2-02 Delay 0ms
concentration. Pump ON 0.97% 1881mV
CO2 mV field: signal is scaled to mV. Lamp ON 56.23% 75mA
Fan ON
CO2 Gain: User gain. It is scaled as (User Zero Valve MEAS Occl Valve MEAS
gain)/(Factory gain). Temp TPX 45.6 CPU 0.0 OM 0.0
O2, N2O, AA Not in use Time after power on 54min
ID Not in use
ID unrel. Not in use
MAC Not in use
Sample Flow is calculated from differential pressure and adjusted by the module. Zero value as
measured during initialization when the pump is off. Gain: sample flow measurement can
be calibrated by adjusting the gain.
Ambient Ambient pressure is measured continuously. Amb-Work: ambient pressure - sampling
system internal pressure.
Fall time Not in use
CO2-O2 Delay Not in use
Pump Can be toggled ON/OFF. PWM output 0-100% is shown. Pump voltage is also shown.
Lamp The state, PWM control, and current of the lamp are shown.
Fan Not in use
Zero Valve Can be toggled between the measurement state (MEAS) and the zeroing state (ZERO).
Occl Valve Not in use
Temp Temperatures measured by the module from TPX, CPU, and OM.
Time after power on In minutes after power on.
5-19

4.2 ECG Module

Service Data
ECG Module Serivce Data
Power Freq shows the mains frequency selected: 50
Power Freq 50 Hz Quick Zero 0
Hz / 60 Hz ECG Setup Cable type 5 lead Artifact 0
Cable type shows the leadwire set connected: 3 lead / Power Freq Electrode RA LA LL V1 RL
ON ON ON OFF ON
5 lead Previous Menu V2 V3 V4 V5 V6
Quick Zero shows 1 when the ECG signal is beyond 0FF OFF OFF ON OFF
scale, and therefore, is quickly returned to the optimal Pacer vount 0 R count 4625
range with fast signal processing methods.
Resp: Avail 1 Value 20
Artifact shows 1 when artifacts are detected. Zeroing 0 MeasOff 0
Electrode shows ON when each of these electrodes is
Arrhythmia 0 On/ Off 1
connected. HR 80 HR25 80 HR75 80
Pacer count is a running number of detected QRS count 4607 PVC 0
Det leads1 6 nroleads 2
pacemaker spikes. Data -73 -12 Noise M/A 0
R count is a running number of detected R waves.
Timeout 6 RAM OK
Resp: Avail shows if a module with impedance Bad Checksum 0 ROM OK
measurement is plugged (1) or not plugged (0) into the Bad cs-by mo 0 EEPROM OK
monitor. Leads Off 0 MissedPkas 4
Value shows the measured respiration rate value for

impedance respiration.
Zeroing indicates the zeroing status of the respiration measurement: 1 = zeroing, 0 = not zeroing.
MeasOff shows 1 if the respiration measurement is set to OFF, and 0 if the the respiration
measurement is set to ON.
Arrhythmia shows an active arrhythmia alarm (VFIB, VTAC, ASY).
On/Off shows 1 if arrhythmia analysis is active and 0 if it is not active.
HR, HR25 and HR75 for R&D purpose only
QRS count shows the running number of detected QRS complexes.
PVC shows the PVCs detected per minute
Det leads shows the leads that are being used for detecting beats and ventricular fibrillation. The
selection of user leads (ECG1, ECG2, ECG3) on the monitor affects the leads used for detection. The first
lead used for detection is lead either I or II. The algorithm uses the lead appearing first in user leads. The
second lead used for detection is one of the precordial leads (V1 - V6): -1 = invalid (not used), 0 = lead I,
1 = II or III; 2 = V1, 3 = V2, 4 = V3, 5 = V4, 6 =V5, 7 = V6
nroleads shows the number of leads that are beign used for detecting beats and ventricular fibrillation.
Possible values include: 0 , 1 and 2 (ref. Det leads) analysis.
Data for R&D purpose only
Noise M/A for R&D purpose only
Timeouts is a cumulative number that indicates how many times the module has not responded to the
monitor’s inquiry.
Bad checksums is a cumulative number that indicates how many times communication from the
module to the monitor has broken down.
5-20

Parameters
Bad c-s by mod is a cumulative number that indicates how many communication errors the
module has detected.
The monitor starts counting these items at power up and resets to zero at power off. The values
may also be reset when a module is attached to the monitor frame and be set to 32769 or
continuous counting may be started when the module is removed from the monitor frame.
The nonzero values do not indicate a failure, but the continuous counting (more than 5 per
second) or value 32769 indicates either a serial communication failure or a module not in place.
Also failures in other modules may cause these numbers to rise or be set to 32769.
RAM indicates the state of the RAM memory.
ROM indicates whether the checksum at the EPROM is in accordance with the one the software
has calculated.
EEPROM indicates if the values stored in the permanent memory are valid.
The state is either OK, Fail or ? (module not in place or a communication error).
LeadsOff indicates whether the monitor can measure ECG even if one or more leadwires are off:
1 = measurement is not possible, 0 = measurement can be done.
MissedPkgs indicates the number of packages missed.
4.2.1 ECG Setup

Filter filters the ECG signal high frequency noise and
slow respiratory artifacts: ECG Module Service Data
Quick Zero 0
- Monit (monitor) filter is used in routine monitoring. ECG Setup Artifact 0
It effectively filters the artifacts caused by the LL V RL
Filter STfilt
electrosurgery unit and respiration. ON OFF ON
Monit V4 V5 V6
! Pacemaker Hide
- Diagn (diagnostic) filter is used if more accurate OFF OFF OFF
information of the waveform is needed (e.g. of STfilt
Rcount 0
P-wave or AV block). The diagnostic filter is more Previous Menu Diagn
susceptible both to high frequencies and baseline Value ---
MeasOff 1
wander than the monitor filter.
On/Off 0
- STfilt (ST filter) permits more accurate information HR75 ---
of ST segment. It filters the high frequency artifacts PVC 0
caused by the electrosurgery unit, but catches the nroleads 0
slow changes in ST segment. The ST filter is more Noise M/A 0 0
susceptible to baseline wander than the monitor RAM OK
filter. Use ST filter for optimal ROM OK
ST analysis. EEPROM OK
Pacemaker selects how to display the pacing pulse of
MissedPkgs 0
cardiac pacemaker. The selections are Show, Hide
and Sensit:
- Hide: the pacing pulse is filtered away from ECG
data.
- Show: the pacer pulse is filtered away from ECG
data but the pulse is displayed as a constant
height marker.
- Sensit: uses a more sensitive pacemaker
detection. Pacemaker spike is displayed on ECG.
5-21

4.3 STP Module

Record Data prints out the shown service data and board
information (id, serial number and sw id) onto the STP Module Serivce Data
P1 P2 T1 T2
recorder. Calibrations Gain 11161 11163 -7562 -7569
Zero -10295 -10295 9674 9695
Temp Test activates the automatic temperature test for Record Data
Cable ON ON ON ON
the temperature channels T1 and T2. The result from the Temp test Probe ON ON ON ON
test is shown in the service data field. Value 76./4 /.94 3/.09 3/.09
Previous Menu
Buttons OFF OFF
NOTE: The Temp Test needs to be selected twice before
SpO2 --- Ired Int. 71
the test starts. Modpr --- Red Int. 70
Hr --- DC gain 5
Cable ON IDC 14115
Probe ON RDC 11193
Probe off AC gain 0
Pre gain 0
Temp error OFF OFF
Temp test OFF
Protect key ON
Protect mode ON
Configuration STP
Timeouts 2 RAM OK
Bad checksums 0 ROM OK
Bad c-s by mode 0 EEPROM OK
Service Data field
Gain is a coefficient to compensate gain error. Usually the values for P1 and P2 are between 17000 and
25000 and for T1 and T2 between 13000 and 14300.
Zero indicates the offset compensation value of each parameter in the A/D converter. Typically the
values for P1 and P2 are within ±1000 and for T1 and T2 between -150 and +300. Calibrate if zero and/or
gain value is outside the ranges.
Cable shows ON when a corresponding cable is connected to the front panel
Probe shows ON when a corresponding probe is connected to the cable.
Under Value the measured numeric values are displayed simultaneously. Pressure values are real time
values and shown in mmHg. Temperature values are shown in degrees Celsius.
The front panel STP keys functions are confirmed by pressing each key and observing that OFF turns to
ON at Button.
SpO2 shows the measured beat-to-beat SpO2 value. Modpr is a modulation % that indicates the AC/DC
ratio in the measured signal. Hr is a pulse rate calculated from every beat.
Cable and Probe can be either OFF or ON, and these indicate the state PROBE OFF.
Under them there is a message field for SpO2. It can be OK, PULSE SEARCH, NO PROBE, PROBE OFF, NO
PULSE, ARTEFACT, POOR SIGNAL, or CHECK PROBE.
Balance between leds is adjusted by changing the intensity of red/infrared. Intensity of infrared (Ired
Int.) is in the range of 40 to 255 and red intensity (Red Int.) is in the range of 40 to 255.
DC gain shows the gain of DC signal adjusted by the module.
IDC is the value of infrared signal.
RDC is the dc value of red signal.
AC gain is the gain of infrared and red ac signals. AC gain values can be 1 or 0. Value 1 means high ac
gain and 0 means low gain.
Pre gain is a preamplifier gain for infrared and red signals. Pre gain values can be 1 or 0. Value 1 means
normal operation. Value 0 means that signal levels are very low and extra gain is taken into use.
5-22

Parameters
Temp error shows the status of the temperature test. No errors found show the
status (OFF) and errors found (ON).
Protect key and Protect mode show normally ON but can be turned to OFF for
the temperature calibration in Calibration Menu.
Configuration shows the chosen module configuration: T, P, TP, ST, or STP.
Timeouts is a cumulative number that indicates how many times the module
has not responded to the monitor’s inquiry. Bad checksums is a cumulative
number that indicates how many times communication from the module to the
monitor has broken down.
Bad c-s by mod is a cumulative number that indicates how many
communication errors the module has detected.
The monitor starts counting these items at power up and resets to zero at
power off. The nonzero values do not indicate a failure, but the continuous
counting (more than 5 per second) indicates either a serial communication
failure, or a module not in place. Also other modules can cause communication
errors that cause these numbers rise.
ROM indicates whether the checksum at the EPROM is in accordance with the
one the software has calculated.
EEPROM indicates if the values stored in the permanent memory are valid.
The state is either OK, Fail or ? (module not in place or a communication error).
5-23

4.3.1 Calibrations
Protection: Protection for the configuration and

STP Module Serivce Data
temperature calibrations can be set ON and OFF. P1 P2 T1 T2
Calibrate T1 / Calibrate T2: The functions are for Calibrations Gain 11161 11163 -7562 -7569
Zero -10295 -10295 9674 9695
calibrating the temperature channels T1 and T2. Record Data
Cable ON ON ON ON
Calibrate P1/ Calibrate P2: The functions are for Temp test Probe ON ON ON ON
Value 76./4 /.94 3/.09 3/.09
calibrating the invasive blood pressure channels Previous Menu
Buttons OFF OFF
P1 and P2.
SpO2 --- Ired Int. 71
Modpr --- Red Int. 70
Hr --- DC gain 5
Cable ON IDC 14115
Probe ON RDC 11193
Probe off AC gain 0
Pre gain 0
Temp error OFF OFF
Temp test OFF
Protect key ON
Protect mode ON
Configuration STP
Timeouts 2 RAM OK
Bad c-s by mode 0 EEPROM OK
How to calibrate T1/ T2

The calibrations are possible only when the protection is set OFF. The temperature calibration
requires accurate test plugs of value 25 °C and 45 °C.
1. Select Calibrate T1/Calibrate T2
2. Insert the test plug 25 °C into the T1/T2 connector
3. Press the Trim Knob
4. Insert the test plug 45 °C into the T1/T2 connector
5. Press the Trim Knob
How to calibrate P1/ P2

NOTE: Before starting the pressure calibration, disconnect all patient cables and discharge the
patient.
The calibrations require a pressure transducer (with appropriate cable) and a pressure
manometer.
1. Connect the pressure transducer with the pressure manometer to the P1/P2 connector.
Select Calibrate P1/Calibrate P2. Leave the transducer to room air pressure.
2. Press the Trim Knob to start zeroing.
3. Supply a pressure of 100 mmHg to 300 mmHg to the transducer. The recommended
pressure is 200 mmHg.
4. Set the pressure on the display to match the pressure reading on the manometer and
press the Trim Knob.
5-24

Parameters
4.4 NIBP Module

Service Data
NIBP Module Service Data
Pressure shows the measured pressure multiplied
B1 B2
by 10. This value is automatically zero-drift Pressure 000000 000000
compensated. Calibrations
Zero -00010 000000
Zero shows the difference between the zeroing Safety Valve
St1 0000 AD0 -17
value in the permanent memory (stored when the Pnematics St2 0000 AD1 6
module is calibrated) and the current automatic St3 0400 AD2 -1
Previous Menu
zero-drift compensation multiplied by 10. The value St4 0000 AD3 1502
AD4 2
can change between +20 and -20 mmHg. If the zero
ON AD5 -1644
drift exceeds ± 10 mmHg, the module should be OFF AD6 5
recalibrated. OFF AD7 -1505
AD0 to AD7 show the values of each eight channels
of the A/D converter.
B1 B2
ST1: Master status, indicate measurement, Offset 000103 000096
calibration, zeroing whether ongoing Gain 000041 000041
ST2: Button status, Not used yet.
ST3: Hardware status, indicate the power supply Timeouts 2 RAM OK
status, ADC error status. Bad checksums 0 ROM OK
Bad c-s by mod 0 EEPROM OK
ST4: Measurement result status, indicate whether
measurement is ready, whether cuff ID is updated
Offset show the offset values for B1 and B2 ( pressure sensor
calibration factors).
Gain show the gain values for B1 and B2 ( pressure sensor calibration
factors).
Timeouts is a cumulative number that indicates how many times the
module has not responded to the monitor’s inquiry.
Bad checksums is a cumulative number that indicates how many
times communication from the module to the monitor has broken
down.
Bad c-s by mod is a cumulative number that indicates how many
communication errors the module has detected.
The monitor starts counting these items at power up and resets to zero
at power off. The nonzero values do not indicate a failure, but the
continuous counting (more than 5 per second) indicates either a serial
communication failure, or a module not in place. Also other modules
can cause communication errors that cause these numbers rise.
ROM indicates whether the checksum in the EPROM is in accordance
with the one the software has calculated.
EEPROM indicates if the values stored in the permanent memory are
valid.
The state is either OK, Fail or ? (module not in place or a
communication error).
5-25

4.4.1 NIBP Calibration
Active Leak Test: Wrap an adult cuff around a pipe

NIBP Module Service Data
and connect the cuff to the module. Select the active
B1 B2
leak test (ON). The module automatically pumps a Calibration 00 000000
pressure of 280 mmHg into the cuff. Wait for several 10 000000
seconds until the pressure stabilizes. Then check Active Leak Test OFF
AD0 -17
that the pressure reading does not drop more than 5 Calibration Check OFF AD1 6
mmHg per minute. If it does, leaking point(s) should Protection OFF AD2 -1
be detected and fixed. Cancel the test by selecting AD3 1502
Calibrate AD4 2
the Active leak test OFF. Previous Menu AD5 -1643
Calibration Check: After the calibration check is AD6 5
AD7 -1505
selected (ON), the module zeroes the pressure
transducers at the beginning of the calibration
check. Do not pump pressure until the text
‘Calibrating’ appears in the NIBP digit field or the
zeroing will fail. After the zeroing is done, manually
pump pressure into the module and make sure that
the same pressure values are shown both on the 2 RAM OK
display and on the manometer. Pressure of both 0 ROM OK
pressure channels B1 and B2 are shown. The 0 EEPROM OK
pressure values are automatically
zero-compensated, so the readings of B1 and B2 should be the same as the manometer readings.
Protection: Software calibration protection (ON/OFF). Select OFF when calibrating.
How to calibrate
NOTE: Perform NIBP Calibration Check first to evaluate if calibration is needed or not.
NOTE: Both channels B1 and B2 must be calibrated simultaneously.
NOTE: The module must be in the frame during the whole procedure.
NOTE: Calibration selection is available only when protection is OFF.
1. Change the protection setting from ON to OFF to enable the Calibrate selection - the
color of the Calibrate selection changes from grey to white.
NOTE: When calibration has been enabled, the message ‘Calibration not protected’ is shown in
the NIBP digit field.
2. Zeroing:
− Disconnect the NIBP hose from the module connector.
− Select Calibrate and push the Trim Knob.
NOTE: Messages ‘Zeroing’ and ‘Zeroed’ is shown in the NIBP message field and next to the
Calibrate selection momentarily. After this, a pressure bar will appear beside the menu and the
text ‘Calibrating’ is shown in the NIBP digit field.
3. Calibration:
− Connect the NIBP hose to the module connector.
5-26

Parameters
− Connect an external manometer with a pump to both tubes of the hose.

− Pump about 200 mmHg pressure.
− Verify that both pressure values, B1 and B2, shown in the prompt field of the
calibration menu match the manometer reading. If not, adjust the by turning the
Trim KnobTrim Knob.
− Press Trim Knob to complete the calibration.
NOTE: Messages ‘Calibrating” and ‘Calibrated’ are shown in the NIBP message field and next to
the Calibrate selection.
NOTE: When calibrating NIBP, always change the displayed pressure value slightly with the
Trim Knob, even in cases where the value would be correct. For example, change the value one
step higher and then back one step lower. The ‘Calibrated’ text should appear in the display.
This ensures that the calibration procedure is correctly registered and stored by the module.
4. Change the Protection setting from OFF to ON to disable Calibrate selection - the color of
the Calibrate selection changes from white to grey.
5-27

4.4.2 NIBP Safety Valve
Start test is for starting and Stop test for stopping the
Safety Valve test. Safety Valve Safety Valve Data
B1 B2
Pressure 000000 000000
Zero 000000 000000
Safety Valve Data: ADULT
Start Test St1 0000 AD0 -16
For information on general items Pressure, Zero, St1 to St2 0000 AD1 6
Previous Menu
St4, AD0 to AD7 as well as Timeouts etc., see service St3 0400 AD2 -1
St4 0000 AD3 1502
data descriptions in section 4.4 NIBP Module. AD4 2
Max. press and 2 s after stop show the measured AD5 -1643
AD6 4
values at Safety Valve test. AD7 -1505
B1 B2
Max press 0 0
2 s after stop 0 0
Timeouts 2 RAM OK
Bad c-s by mod 0 EEPROM OK
How to do safety valve test for adult/infant

1. Disconnect the pressure manometer from the NIBP module cuff connector. Connect the
NIBP hose and cuff to the NIBP module cuff connector.
2. Perform the check with a standard adult cuff that is connected around some round
object, for example a calibration gas bottle.
3. Select Start Test. Start the adult safety valve test by pressing the Trim Knob. Wait until the
pump stops and the pressure is deflated.
4. Open the cuff connector or disconnect and connect the cuff connector from the module.
5. Check the pressure values ‘Max press’ and ‘2 s after stop’ for both transducers. All the
values should be within 280 - 325 mmHg.
6. Select ADULT. Press the Trim Knob and check that the text changes now to INFANT.
7. Select Start Test and wait until the pump stops and the pressure values on the screen
have been updated.
8. Open the cuff connector or disconnect and connect the cuff connector from the module.
9. Check that the values ‘Max press’ and ‘2 s after stop’ are all now within 135 to 165 mmHg.
10. Return to the normal monitoring mode by pressing Normal Screen
5-28

Parameters
4.4.3 NIBP Pneumatics
Start Pump/Stop Pump: A manual control for the pump.

The selection changes to Stop Pump when the pump turns
Pneumatics Pneumatics Data
B1 B2
on. Pressure 000000 000000
Start Pump
Zero -00010 000000
Open Safe. Valve/Close Safe. Valve: A manual control for
Open Safe. Valve
the Safe valve. The selection changes to Close Safe Valve St1 0000
AD0 -17
Open Defl. Valve AD1 6
when the valve is opened. St2 0000 AD2 -1
Reset Clock St3 0400 AD3 1502
Open Defl. Valve/Close Defl. Valve: A manual control for St4 0000 2
Previous Menu AD4
the deflation valve. The selection changes to Close Defl. AD5 -1643
Valve when the valve is opened. AD6 4
AD7 -1505
Reset Clock: Set up the Interval time 20 mmHg -> 185
mmHg to 0 s Pump Safety Deflate
Valve Valve
OFF CLOSED CLOSED
Pneumatics Data field Interval 20 mmHg -> 185 mmHg 0s
For information on general items Pressure, Zero, St1 to St4, Timeouts 2 RAM OK
AD0 to AD7 as well as Timeouts etc., see section ”NIBP Bad c-s by mod 0 EEPROM OK
Module.”
Pump, Safety Valve, and Deflate Valve show their states.
How to check Interval 20 mmHg -> 185 mmHg

Select Start pump at different combinations of the valves open/closed and push the Trim Knob.
The module counts the time it takes for the pressure to go up from 20 mmHg to 185 mmHg
and displays it. When all the valves are closed, the pump should be able to pump the pressure
in about 1 to 4 seconds into an adult cuff wrapped around a pipe. The pump does not stop
without selecting Stop Pump by pushing the Trim Knob.
NOTE: To redo the test, must go back to the previous menu.
5-29

4.5 SpO2
PR: Measured pulse rate value
SpO2%: Measured SpO2 value SpO2 SpO2 Data
NoProbe: If there is a probe connected Previous Menu PR -----
PulseSearch: If the pulse search is being SpO2% -----
done.
CheckProbe: If there is check probe error.
QUART Status: Show quart status. NoProbe 1
POX Status: Show POX measurement PulseSearch 0
status. CheckProbe 0
I/O Status: Show IO status.
POX Error: Show POX error status. QUART Status 0000
POX Status 0000
I/O Status 9E08
POX Error 0000
For information on Timeouts etc., see
section ”NIBP Module.”
Timeouts 2
Return to Bad checksums 0 ROM OK
Previous menu. Bad c-s by mod 0
5-30

Set/Test
5 Set/Test
The power supply unit contains a watchdog
circuitry, which needs refreshment at every 1.5
Service Menu Sw version / Unit id
seconds. If the refreshment did not occur, the Set / Test
watchdog circuitry will reset the main CPU. In ----------------------------
normal operation, the main CPU refreshes the Watchdog
watchdog circuitry at every 0.2 seconds. ----------------------------
WD by Over load
The purpose of the watchdog circuitry is to restart
Set Wd Timeout 10s ----------------------------
the monitor, if there was a serious malfunction. This
feature is useful in two cases: when the main CPU is Factory Reset
----------------------------
not able to control the monitor, or when the CPU Previous Menu
controls the monitor but detects a serious ----------------------------
malfunction. Watchdog tests check proper
----------------------------
functionality of the watchdog circuitry in various
conditions. ----------------------------
Watchdog test ensures directly that the watchdog 2, 2004-03-15
number:-----------------
of the power unit functions properly. Choosing this
test prevents the watchdog circuitry from ----------------------------
refreshing and shows running seconds with an
accuracy of 0.1 seconds.
The test should have the following result when the
watchdog circuitry is working properly: The monitor will restart after 1.5
seconds from the start of the test. In malfunction: ‘>20 s’ is displayed, and the
test will be interrupted. In this case, the fault is in the watchdog circuitry of the
power unit.
WD by Overload test ensures the functionality of a feature, where the
software controls the monitor, but detects an overload situation in the main
CPU.
The test should have the following result when the feature is working properly:
The monitor will restart after 15 seconds from the start of the test.
Set Wd Timeout: Set up the the watchdog test time. The default value is 10 s.
Factory Reset restores the factory default settings and clears the data
memories. Factory reset should be run if the monitor software is replaced or if
the SRAM/Timekeeper battery is replaced.
5-31

6 Service Log
Error, event and alarm data is stored in the Service
Log. Service Log Error History
The service log contains information about the
occurred monitor errors, events and alarms since the Error Log
Last errors:
last factory reset or service log reset. The service log Alarm Log
is saved in the EEPROM memory of the main CPU Scroll Log 2010-Nov-27 13:50:08
board. UMBC handler: LOG Msg<Umbc reset> at
Record Log UmbcChannel. cpp(189)
Reset Log
Error Log is for selecting the error history view onto
the right side of the menu. Error Log shows also Previous Menu
some monitoring events like warm and cold starts.
Alarm Log is for selecting the alarm history view
onto the right side of the menu.
Scroll Log is for scrolling the error/alarm information
on the right side of the menu.
Record Log is for recording the service log
information onto the recorder.
Reset Log is for clearing up the content of the
selected service log. This function should be run after
a performed maintenance.
5-32

6 Field replaceable
unit
Frame spare part
1 Frame spare part

The following B40/B20 parts will be available as field replaceable spare parts.
1.1 Front cover
Item Description Order Code

3 B40 LCD Inverter 2053489-003
6 B40B20 user Interface board 2053489-006
12 B40B20 AC/DC power unit 2053489-012
19 FRU B40B20 keyboard 2053489-019
21 B40B20 Trim Knob 2053489-021
23 FRU B40 FRONT COVER 2053489-023
27 B40B20 Hemo Cover 2053489-027
31 B40B20 Hemo PCBA NIBP 2053489-031
49 B40B20 RAC flex cable 2053489-049
50 B40B20 RAC cover 2053489-050
6-1


53 FRU B40 ALARM LIGHT 2053489-053
61 B20 FRONT COVER 2053518-008
1.2 Back cover unit

16 B40 Rear Cover 2053489-016
19 FRU B40B20 Keyboard 2053489-019
23 FRU B40 FRONT COVER 2053489-023
24 B40B20 Module interface board 2053489-024
27 B40B20 Hemo Cover 2053489-027
31 B40B20 Hemo PCBA NIBP 2053489-031
49 B40B20 RAC flex cable 2053489-049
6-2

Frame spare part

50 B40B20 RAC cover 2053489-050
51 B40B20 Adapter 2053489-051
54 FRU B20B40 BATTERY COVER 2053489-054
63 B20 Rear Cover 2053518-005
64 FRU DASH 2600 BATTERY 2044978-004
1.3 Frame

2 B40 LCD MODULE 2053489-002
4 B40B20 ethenet board 2053489-004
7 B40B20 Speaker 2053489-007
8 B40 Frame cables and mechenical parts 2053489-008
10 B40B20 DC-DC board 2053489-010
11 B40B20 battery connect board 2053489-011
6-3


13 B40B20 AC inlet 2053489-013
14 B40B20 CPU board 2053489-014
15 B40B20 Handle 2053489-015
16 B40 Rear Cover 2053489-016
24 B40B20 Module interface board 2053489-024
27 B40B20 Hemo Cover 2053489-027
31 B40B20 Hemo PCBA NIBP 2053489-031
49 B40B20 RAC flex cable 2053489-049
50 B40B20 RAC cover 2053489-050
55 FRU B40 MAIN CHASSIS 2053518-055
63 B20 Rear Cover 2053518-005
65 FRU B20 MAIN CHASSIS 2053518-011
66 B20B30 LCD MODULE 2044978-001
67 B20B30 LCD Inverter 2044978-002
68 B20 Frame cables and mechenical parts 2053518-004
1.4 Others

- B40B20 Software Download CD 2053489-017
- CABLE RS232 0.76 M 2025963-001
NOTE: Please bug this part locally. MPN: CS2N9MF-2.5
6-4

Module spare part
2 Module spare part

2.1 Extension rack

27 B40B20 Hemo Cover 2053489-027
31 B40B20 Hemo PCBA NIBP 2053489-031
47 FRU DASH2500 PRINTER 2023852-008
48 B40B20 Recorder connect board 2053489-048
49 B40B20 RAC flex cable 2053489-049
50 B40B20 RAC cover 2053489-050
6-5

2.2 Hemo box

43 B40B20 Hemo Nellcor 2053489-043
44 B40B20 Hemo Masimo 2053489-044
45 B40B20 Hemo GE STP 2053489-045
46 B40B20 Hemo GE SpO2 2053489-046
6-6

Frame disassembly
3 Frame disassembly
WARNING The B40/B20 is always energized by the internal batteries. A short circuit
may cause internal damage. Do not touch any exposed wiring or
conductive surface inside, this may cause an electric shock.
CAUTION Perform leakage current measurement whenever service or repair has been
done in the monitor.
NOTE: The backlight circuit runs on high voltage.
Do not touch the inverter board or the backlight tube leads when powered.
NOTE: Field repairs are recommended to the field replaceable unit (FRU) only. Attempting a field
repair on a factory sealed component or assembly could jeopardize the safe and effective
operation of the Monitor.
3.1 Before disassembly

NOTE: Wear a grounded, antistatic wristband when handling PC boards. Electrostatic
Make sure that the monitor is turned off.
Disconnect from the network.
− Remove the E-miniC module, batteries and power cord first.
3.2 Tools needed

• Screwdrivers; PH2, PO1, PH1, Hex 5.5
• Flat blade screwdriver
• Antistatic wristband
NOTE: GE recommends that you assemble the monitor using the NEW fasteners (screws,
washers, etc.) provided in the FRU kits. Some fasteners, like the screws with a thread locking
coating, are NOT intended to be re-used more than three times.
6-7

To separate the extension rack,

hemo module and multi I/O from
the frame
1. Remove the 7 screws from the bottom of the frame
NOTE: When place the monitor face down, be careful of the
screen and the Trim Knob.
2. Remove the screw beside the monitor
3. From the back side of the monitor, pull the extension rack
out of frame, grasp it firmly.
6-8

Frame disassembly
4. Open the battery’s cover, use a screwdriver to release the

latch by pivoting the screwdriver away from the monitor.
5. Using the screwdriver to pry the module from the monitor at
the same time.
6. Pull the hemo module out of the monitor.
7. Use the screwdriver to prize, pulling out the multi I/O at the
same time.
To open the back cover of the

frame
8. Remove the 5 screws from the back side of the frame
9. Remove the 2 screws from top of the frame
6-9

10. Open the cover in the back side of the frame, then remove
the screw inside.
11. Lift the back cover up
To change the handle After opening the back cover
- Remove 2 screws for the handle.
To remove the front cover

- Remove 4 screws by the side of the frame
6-10

Frame disassembly
- Disconnect the alarm light cable

- Disconnect the connection cable
- Open and remove the front cover from the frame
To remove the alarm light board After opening the front cover
- Remove 2 screws, the alarm light board is on the top of the

front cover.
To remove the user interface board After opening the front cover
- Remove 2 screws, the user interface board is on the bottom
of the front cover
- Disconnect the Trim Knob cable
- Disconnect the keyboard cable
To separate the LCD display
6-11

- Remove 4 screws from beside the LCD
- Disconnect the LCD inverter cable on the top side of the

screen
- Disconnect the display cable from CPU board, on the bottom

side of the screen
- Remove the LCD display
NOTE: When reassemble the LCD display, be careful that no dirt

or finger prints are left.
To remove the loudspeaker unit After removing the LCD display
- Disconnect the cable from CPU board

- Remove 2 screws for the loudspeaker
To remove the ACDC unit

- Remove screw
- Disconnect the cable to power board.
- Disconnect the cable to ethenet board
- Slightly lift the front of the ACDC unit, push the whole ACDC
unit to top direction.
6-12

Frame disassembly
- Lift the unit up

- Disconnect the cable to power board
- Disconnect all the rest cables from the CPU board

- Separate the whole unit from the frame
To remove the ethenet board

- Remove 3 screws for ethenet board
- Lift up the ethenet board from the frame
To remove the CPU board

- Remove 4 screws for the CPU Board
NOTE: Remove the CPU battery every 5 years.
6-13

- Carefully disconnect the CPU board from the power board,

and remove it out.
To remove the power board and

battery board
- Remove the rest 7 screws off
- Carefully disconnect the CPU board from the power board,
and remove it out first
- Remove the battery board out of the frame
To remove the LCD inverter board

- Remove the 2 screws and separate the board from the unit
To remove the ACDC board

- Remove the four screws in ACDC unit
- Disconnect the cable from the AC inlet
- Lift up ACDC board
To remove the module interface

board
6-14

Frame disassembly
- Disconnect the cable from from the module interface board
- Remove 2 screws and then remove the module interface

board
6-15

3.3 Handling and storage of LCD display component

Handling of LCD display component and protective window
If the LCD Display component surface becomes dusty, wipe it gently with absorbent cotton,
chamois or other soft material. If necessary, breathe onto the display surface and wipe
immediately. The display surface may also be cleaned using a small amount of normal
hexane. Do not use acetone, toluene or alcohol because they cause chemical damage to the
polarizer.
1. Wipe off saliva and water drops as soon as possible. Their prolonged contact with the
polarizer cause deformations and color fading.
2. Do not open the component case because internal circuits are sensitive to electrostatic
discharges.
Placing a spare part LCD Display component or a display shield into use:
Peel off the protective film slowly (in more than 10 seconds) from the display or protective
window surface. Fast peeling may generate enough static electricity to destroy the LCD
Display component.
Storaging an LCD display component as a spare part for a long period
1. Store the display in a dark place. Do not expose it to sunlight or fluorescent light. Keep the
temperature between -30 °C and 85 °C / -22 °F and 185 °F at 5% to 95% humidity.
2. The polarizer surface should not come into contact with any other object. It is
recommended that the display unit is stored in the container in which it was originally
shipped.
6-16

Frame disassembly
3.4 Batteries
3.4.1 Battery indicators
The B40/B20 messages, screen symbols and the LED indicators tell the user about the status of
the batteries. For screen symbols, see “Part 1 Symbols”. For LED indicators, consult the table
below and for messages, see section “Troubleshooting.” in User’s Guide.
Table 12 Battery indicators
Screen symbol Explanation Front panel battery LED

indicators
Monitor is battery Orange dark
A
B B powered. Batteries are Green lit
fully charged and the
size of the green bar
indicates the charging
level.
B
Monitor is battery Orange dark

powered. Battery A is Green lit
A B empty, battery B is ok.
Monitor is battery Orange flashing

powered. Battery A Green lit
B failure, battery B is ok.
NOTE: If both batteries fail, the green battery LED is dark.

Monitor is mains Orange lit
powered. Battery A is Green dark
being charged (white
bar), battery B is already
charged.
Monitor is mains Orange dark
no screen symbol powered. Green dark
6-17

3.4.2 To check the battery
Check the battery charging level by pressing the test

button on the battery as indicated in the drawing on the
left.
The green bar lights up and the number of lit segments
indicates the charging level: the more lit segments, the
higher the capacity level.
Figure 1 Capacity indicator on the battery
3.4.3 Conditioning the batteries

Condition the batteries regularly to maintain their useful life. Condition a battery every six
months or when the message ‘Condition Battery x’‘ appears on the screen. Always observe the
messages and symbols on the screen to see the battery status. You can also check the status
through Monitor Setup - Battery Setup. Conditioning a battery is best done on an external
charger. If you do not have an external charger, proceed according to the following
instructions.
NOTE: You cannot condition batteries during patient monitoring. Always disconnect the
modules first.
1. Continue normal battery use until the green bar of a battery charge indicator is less than
3/4 of the full height. After this, remove the battery. Continue monitoring with one battery
until its charge is less than 3/4 of the full capacity.
2. Insert both batteries and connect the monitor to the power supply. The monitor starts
charging both batteries, and the capacity indicators scroll accordingly. Keep charging the
batteries until both capacity indicators are full height.
3. Continue charging for another two hours. After this, check that the orange battery LED in
the front panel is no longer on. If it is, continue charging until it goes off.
4. Disconnect the monitor from the power supply and leave it on until the batteries run out
and the monitor switches off. Wait for another 15 minutes.
5. Reconnect the monitor to the power supply and turn it on. Continue charging the
batteries until both capacity indicators are full height and no longer scrolling.
6. Keep charging for another two hours. After this, check that the orange battery LED in the
front panel is no longer on. If it is, continue charging until it goes off to indicate that the
battery conditioning is complete.
6-18

Frame disassembly
3.5 To replace the fuses

Pull out the fuse holder under the mains connector at the back of the monitor. Replace the
fuses with fuses of exactly the same type and rating.
To change the fuses
- Use the screwdraft to press the fuse
holder
- Prize and pull the holder out

- Replace the fuse with correct type and
rating
3.6 To download the software

Refer to the instruction in Software’s FRU, follow the instruction for downloading service
software.
6-19

4 Module disassembly
4.1 Before disassembly
NOTE: Wear a grounded, antistatic wristband when handling PCB boards. Electrostatic
NOTE: Handle all PCB boards by their edges.
4.2 Tools needed

• Screwdrivers; PH2, PO1, PH1, Hex 5.5
• Flat blade screwdriver
• Antistatic wristband
CAUTION When reassembling the module, make sure that all cables are reconnected
properly.
4.3 To disassemble the hemo module

To open the hemo module
1. Remove the four screws on the module cover
2. Open the cover by lifting up
To remove the SpO2 board After open the module
- Remove the three screws, then remove the board
NOTE: This is the Nellcor or Masimo board, if use the GE

SpO2 configuration, this board is not existed.
To remove NIBP Pumb, Tube and Board
6-21
Module disassembly
- Remove the 4 screws, and lift up the insulator plate
- Disconnect the tube to the pump

- Lift up the pump from the box.
- Remove the two screws, open the cover
- Disconnect the tubes to the NIBP connector

- Remove all the NIBP parts (board, tubes, cables) from
the box
To remove the TP/STP board
6-22

- Disconnect the TP/STP input cable

- Lift up the TP/STP board carefully
If use the GE SpO2 configuration, it’s the STP board, or GE

SpO2 board, otherwise is the TP board.
To remove the ECG board

- Lift up the insulator plate
- Disconnect the ECG input cable

- Lift up the ECG board carefully
To remove the input unit

- Open the ECG cable’s insulator plate
- Lift the input unit up from the box with the outside
cover together
6-23
Module disassembly
4.4 To disassemble the extended rack and the recorder

To remove the recorder
- Use the flat blade screwdriver to press the
lock through the hole inside.
- Pulling the recorder out at the same time
To open the extended rack box

- Remove the four screws on the box
- Lift the cover up
To remove the rac flex cable
6-24

- Remove the three screws, then remove off the

board
To disassemble the recorder

- Remove the paper from the recorder
- Remove 2 screws inside the recorder
Reassemble the module in reverse order.

Always perform the “Installation checkout” after reassembling the module.
6-25
7 Technical
specification
General Specifications
1 General Specifications
1.1 Genenral specifications
Size
Monitor
Without extension 312±5 mm (H) * 312±5 mm (W) * 158±5 mm (D)
modules
With extension modules 312±5 mm (H) * 352±5 mm (W) * 178±5 mm (D)
Weight
With extension module, 6 kg
recorder and CO2
Environment
Operating temperature Normal operation: +5 to +40°C (41 to 104°F)
Charging batteries: +5 to +35°C (41 to 95°F)
Storage and transport -20 to +60°C (-4 to 140°F)
temperature
Operating humidity 20 to 90% noncondensing
Storage and transport 20 to 90% noncondensing
humidity
Operating atmospheric 700 to 1060 hPa

pressure (525 to 800 mmHg)
Storage and transport 700 to 1060 hPa
atmospheric pressure (525 to 800 mmHg)
Electrical
AC input voltage 100 to 240 V
AC input frequency 50/60 Hz
AC input power 150 VA
Power supply Internal battery or AC power
Power cord type cord connector IEC/EN 60320-1/C13
For USA, difference type of plugs should be used for connection to the alternate
voltage 13 A 125 V or 6 A 250 V.
Fuse 250 V, 2.5 Ah
Battery Exchangeable lithium-ion, 2 pcs max.
Battery life 300 cycles minimum to 50% capacity
Battery information model SM 201-6; 11.1 V, 3.52 Ah
Charging time 2 hours per battery pack
7-1

Operation time Up to 4.5 hours

Recorder
Power comsumption Standby: < 1.2 W
Printing: < 10 W
Recorder type Thermal array
Resolution Vertical 8 dots/mm (200 dots/inch)
in non-waveform mode
Horizontal 24 dots/mm (600 dots/inch)
mimimum in waveform mode
Paper width 50 mm, printing width 48 mm
Waveforms Selectable 1, 2, or 3 waveforms
Print speed 1, 6.25, 12.5, 25 mm/s
1.2 Defibrillator synchronization connector

Synchronization pulse (Pin 5)
Pulse width: 10 ms positive pulse
Delay: < 35 ms (R-wave peak to leading edge of pulse)
Amplitude: CMOS compatible
3.5 V min. at 1 mA sourcing
0.5 V max. at 5 mA sinking
Output impedance: 50 Ω
Current limit: 10 mA
7-2

Parameters specifications
2 Parameters specifications
2.1 ECG specifications
Leads available 3-lead configuration: I, II, III
5-lead configuration: I, II, III, aVR, aVL, aVF and VA
QRS detection range 0.5 to 5mV
QRS detection width (Q to 40 to 120 ms
S)
Defibrillation protection 5000 V, 360 J
Recovery time <5 s
Input impedance Common mode > 10 M Ω @ 50/60 Hz
Differential > 2.5 M Ω from 0.67 to 40 Hz
Common mode rejection 90 dB minimum at 50 Hz
Tall T wave rejection >1.4 mV
ECG leads off detection Active patient electrode: <30 nA
Reference electrode: <120 nA
Filter modes
Monitoring filter 0.5 to 40 Hz
ST filter 0.05 to 40Hz
Dagnostic filter 0.05 to 150 Hz
Heart rate
Measurement range 30 to 300 bpm
Measurement accuracy ±5 % or ±5 bpm, whichever is greater
resolution 1 bpm
Heart rate response time (ANSI/AAMI EC13-2002 Section 4.1.2.1f)
Step increase from 80 to average 6.9 s (6.5 to 7.5 s)
120 bpm
Step decrease from 80 to average 8.2 s, (7.6 to 10.0 s)
40 bpm
The heart rate calculation operates with irregular rhythms of ANSI/AAMI
EC13-2002 Section 4.1.2.1e, the heart rate after a 20 second stabilization period
is:
Figure 3a 80 bpm
Figure 3b 59 bpm
Figure 3c 122 bpm
Figure 3d 117 bpm
7-3

Heart rate averaging computation (ANSI/AAMI EC13-2002 Section 4.1.2.1d):

Average of 10 second median values
The average time and time range ( ) to alarm (VFib or VTachy) for
tachycardia waveform are as follows (ANSI/AAMI EC13-2002 Section 4.1.2.1g)
Figure 4a halved 9.9 s (8.4 to 11.5 s)
amplitude:
Figure 4a 7.1 s (5.8 to 8.2 s)
normal amplitude:
Figure 4a 4.4 s (4.2 to 4.6 s)
doubled amplitude:
Figure 4b halved 7.0 s (6.1 to 7.5 s)
amplitude:
Figure 4b 5.8 s (4.5 to 7.4 s)
normal amplitude:
Figure 4b 6.1 s (5.1 to 7.0 s)
doubled amplitude:
ST
ST numeric range -9 to 9 mm (-0.9 to 0.9 mV)
ST numeric accuracy ±0.2 mm or ±10%, whichever is greater (within the
range of -8 to 8 mm)
ST numeric resolution 0.1 mm
Pacemaker detection
Input voltage range 2 to 700 mV
Input pulse width 0.5 to 2 ms
Input overshoot Specified for both Method A and Method B required
in ANSI/AAMI EC13-2002 Section 4.1.4.2
Pacer pulse rejection of 2.0 V/s (according to the test defined in ANSI/AAMI
fast ECG signals EC13-2002 Section 4.1.4.3)
NOTE: Pacemaker detector may not operate correctly during the use of high-frequency (HF)
surgical equipment. The disturbances of HF surgical equipment typically cause false positive
pacer detection.
Direct cardiac application:

The display area reserved for the ECG measurement in the monitoring system screen may not
be adequate for displaying the complete ECG amplitude when measuring ECG direct from the
surface of the heart. Clipping of the signal can be reduced by adjusting the size of the signal on
the screen (for example, from the default 1.0 to 0.2) in the ECG menu.
7-4

2.2 Impedance respiration specifications

Measurement range 4 to 120 resp/min
Measurement accuracy ±5% or ±5 resp/min, whichever is greater
Nomalized respiration <5.0 µA
sensing current
Impedance respiration 31.25 kHz

carrier frequency
2.3 GE SpO2 specifications

Measurement and display 0 to 100%
range
Calibrated against functional oxygen saturation.

Measurement accuracy 100 to 70% ±2 digits
69 to 0% unspecified
Display resolution 1 digit (1% of SpO2)
Display averaging 5 to 20 seconds
Wavelength of SpO2 probe Infrared LED 940 nm
LEDs: RedLED 660 nm
Maximum energy of SpO2 Infrared LED 42 µJ/pulse
probe LEDs: Red LED 62 µJ/pulse
Artifact rejection SpO2 values ±3% and PR values ±5%,
when trapping with a finger for 10s
Pulse rate
Measurement and display 30 to 250 bpm
range
Display resolution 1 bpm
Measurement accuracy ±5% or ±5 bpm, whichever is greater
7-5

2.4 Nellcor SpO2 specifications

range
Measurement accuracy Adult 100 to 70% ±2 digits

Neo 100 to 70% ±3 digits
Low perfusion 100 to 70% ±2 digits
Display resolution 1% of SpO2
Pulse rate
range
Measurement accuracy ±3 digits
Sensor Light Source
Wavelength Infrared: 890 nm (nominal)
Red: 660 nm (nominal)
Power Dissipation Infrared: 22.5 mW (max)
Red: 30 mW (max)
2.5 Masimo SpO2 specifications

range
Measurement accuracy
Without motion Adult/Pediatric 100 to 70% ±2 digits
Neonate 100 to 70% ±3 digits
With motion Adult/Ped/Neo 100 to 70% ±3 digits
Low perfusion 100 to 70% ±2 digits
0~69% unspecified
Display resolution 1% of SpO2
Pulse rate
range
Measurement accuracy Without motion ±3 bpm
With motion ±5 bpm
7-6

Sensor Light Source

Wavelength Infrared: 905 nm (nominal)
Red: 660 nm (nominal)
Power Dissipation Infrared: 22.5 mW (max)
Red: 27.5 mW (max)
2.6 NIBP
Measurement technique Oscillometric with step deflation
Supported modes Manual, automatic and stat
Measurement time Adult/Pediatric inflate duration time exceeds 120 s
Neonate cycle time exceeds 85 s
Measurement ranges
Systolic Adult/Pediatric: 30 to 290 mmHg
Neonate: 30 to 140 mmHg
MAP Adult/Pediatric: 20 to 260 mmHg
Diastolic Adult/Pediatric: 10 to 220 mmHg
Accuracy According to AAMI SP10-2002 4.4.5.2 B, accuracy of
NIBP parameter was validated against the
intra-arterial method 1.
Default initial inflation Adult/Pediatric: 135 ± 15 mmHg
pressure Neonate: 100 ± 15 mmHg
Over pressure allowed by Adult/Pediatric: 300 to 330 mmHg
independent safety Neonate: 150 to 165 mmHg
controller
1. Blood pressure measurements determined with this device are equivalent to those
obtained by an intra-arterial blood pressure measurement device, within the limits
prescribed by the American National Standard, Manual, electronic, or automated
sphygmomanometers
7-7

2.7 Invasive blood pressure

Measurement range -40 to 320 mmHg (-5.3 to 42.7 kPa)
Measurement accuracy ±5% or ±2 mmHg, whichever is greater
Frequency response 4 to 22 Hz
Transducer sensitivity 5 µV/V/mmHg
Pulse rate
Range 30 to 250 bpm
Accuracy ±5% or ±5 bpm, whichever is greater
Zero adjustment range ± 150 mmHg
2.8 Temperature
Measurement units ° Fahrenheit (F)
° Celsius (C)
Measurement range 10 to 45°C (50 to 113°F)
Measurement accuracy ± 0.1°C without temperature sensor
Display resolution ± 0.1°C at 25 to 45 °C with reusable probes
Probe types supported Use only GE Healthcare recommend temperature
YSI probes.
Temperature self-check At start-up and then every 10 minutes
Probe type time response
Reusable skin temperature 3 s
probe:
Reusable adult central 6s
temperature probe:
Reusable pediatric central 4s
temperature probe:
Disposable skin 3 to 6 s
temperature probe:
Disposable central 5 to 8 s
temperature probe, 12F:
Disposable central 5 to 8 s
temperature probe, 9F:
7-8

2.9 Airway gases

Sampling rate 150±25 ml/min (sampling line 2 to
3 m, normal conditions)
Maximum sampling 6m
line length:
Sampling delay 2.1 s typical with a 3-m sampling line
Total system response 2.4 seconds typical with a 3-m
time sampling line, including sampling delay and rise time
Warm-up time 1 minute for operation
30 minutes for full specification
Autozeroing interval 4, 15, 30 and 60 minutes after start-up, then every
60 minutes
NOTE: The drift of measurement accuracy will be cleared after autozeroing.
Carbon dioxide (CO2)

Measurement range 0 to 20 vol%
Accuracy
0 to 15 vol% ± (0.2 vol% + 2% of reading)
15 to 20 vol% ± (0.7 vol% + 2% of reading)
Resolution 0.1%
Measurement rise time < 300 ms with nominal flow
Valid for respiration rate < 40 breaths/min at I:E ratio of 1:1. (Relative error is
typically 10% for respiration rate 80 breaths/min at I:E ratio of 1:1.) The accuracy
is specified in simulated ventilation. With higher respiration rates and with
varying ventilation methods the specifications may not be met.
Respiration rate
Breath detection 1% change in CO2 level
Measurement range 4 to 80 breaths/min
Accuracy ±1 breaths/min in the range 4 to 20
breaths/min ±5% in the range 20 to 80 breaths/min
7-9

Resolution 1 breaths/min
Non-disturbing gases are Ethanol C2H5OH (<0.3%)
those with a maximum Acetone (<0.1%)
effect on the CO2 reading
Methane CH4(<0.2%)
at 5.0 vol% < 0.2 vol%. The
effect is valid for specific Nitrogen N2 (0 to 100%)
concentrations shown in Water vapor (0 to 100%)
parentheses of the
Dichlorofluoromethane (<1%)
non-disturbing gas:
Tetrafluoroethane (<1%)
Disturbing gases and their Halothane (4%) increases < 0.3 vol%
effect on the CO2 reading Isoflurane(5%) increases < 0.4 vol%
at 5.0 vol% CO2 are shown Enflurane(5%) increases < 0.4 vol%
below. Errors listed reflect
Desflurane(24%) increases < 1.2 vol%
the effect of specific
concentrations (shown in Sevoflurane(6%) increases < 0.4 vol%
parentheses) of an If O2 compensation is not activated:
individual disturbing gas O2 (40 to 95%) decreases < 0.3 vol%
and should be combined
when estimating the effect If O2 compensation is activated:
of gas mixtures: O2 (40 to 95%) error < 0.15 vol%
If N2O compensation is not activated:
N2O (40%) increases < 0.4 vol%
If N2O compensation is activated:
N2O (40 to 80%) error < 0.3 vol%
NOTE: CO2 measurement is intended for patients weighing over 5 kg (11 lb).
7-10

8 E-MiniC Module
Introduction
1 Introduction
This chapter provides information for the maintenance and service of the Datex-Ohmeda S/5
Single-width Airway Module, E-miniC. The Single-width Airway Module is a single-width plug-in
module designed for use with the GE modular monitors. Later in this manual the module may
be referred to without S/5 for simplicity.
The Single-width Airway Module provides airway and respiratory measurements.
Letter C in the module name stands for CO2.
NOTE: Do not use identical modules in the same monitor simultaneously.
NOTE: The Single-width Airway Module or Compact Airway Module and Airway Module,
G-XXXX, cannot be used simultaneously in the same monitor.
NOTE: E-miniC is intended for patients weighing over 5kg (11lb).
Figure 1 Airway gases setup with E-MiniC Module

1. Module for measuring airway gases
2. Anesthesia gas sampling line
3. Airway adapter with sampling line connector
4. Sampling line connector
Monitor software compatibility

The Single-width Airway Module, E-miniC, is designed for use with VSP or later versions
respectively.
Equipment safety symbols
- When displayed on the E-miniC module, indicates that airway gases should
be calibrated every six months in normal use and every two months in
continuous use.
8-1

2 Specifications
2.1 General specifications
E-MINIC
Module size, W × D× H 37 × 209 × 112 mm, 1.5 × 8.2 × 4.4 in
Module weight 0.4 kg/0.9 lb.
2.1.1 Environmental specifications

Operating temperature +10...+40 °C (+50 to 104 °F)
Storage temperature -20...+60 °C (-4 to +140 °F)
Atmospheric pressure 666...1060 hPa /
(67...106 kPa)
(500...800 mmHg)
(666...1060 mbar)
Humidity 10...95% non-condensing (in airway 0...100%, condensing)
Protection against electrical shock Type BF
2.1.2 Functional alarms

Funtional alarms for
− Blocked sample line
− D-Fend replacement
− D-Fend check
2.2 CO2 measurement

2.2.1 Typical performance
EtCO2 End-tidal CO2 concentration
FiCO2 Inspired CO2 concentration
Measurement range 0 to 20 vol% (0 to 20 kPa, 0 to 150 mmHg)
Accuracy CO2 concentration 0 to 15 vol%
±(0.2 vol% +2% of reading)
CO2 concentration 15 to 20 vol%
±(0.7 vol% +2% of reading)
Measurement rise time < 300 ms with nominal flow
Adjustable low and high limits for EtCO2 and FiCO2.
2.2.2 Technical specifications

Airway humidity 0...100%, condensing
Sampling rate 150 ±25ml/min (sampling line 2 to 3 m, normal conditions)
Sampling delay 2.1 seconds typical with a 3-m sampling line
Total system response time 2.4 seconds typical with a 3-m sampling line, including sampling
delay and rise time (typically 3.7 seconds with a 6-m sampling
line).
Automatic compensation for barometric pressure, CO2-NO2 and CO2-O2 collision broadening effect
compensation selectable from menu.
8-2

Specifications
Warm-up time 1 min for operation with CO2, 30 min for full specification
Zeroing interval 4, 15, 30 and 60 minutes after start-up, then every 60 minutes.
2.2.3 Normal conditions

Accuracy specifications apply in normal conditions (after 30 minutes warm-up period):
Ambient temperature 18...28 °C, within ±5°C of calibration
Ambient pressure 500...800mmHg, ±50mmHg of cal.
Ambient humidity 20...80% RH, ±20% RH of cal.
Automatic compensation for barometric pressure.
Non-disturbing gases are those with a maximum effect on the CO2 reading <0.2 vol%. The
effect is valid for specific concentrations shown in parentheses of the non-disturbing gas:
− Ethanol C2H5OH (<0.3%)
− Acetone (<0.1%)
− Methane CH4 (0.2%)
− Nitrogen N2
− Water vapor
− Dichlorofluromethane (<1%)
− Tetrafluoroethane (<1%)
Disturbing gases and their effect on the CO2 reading at 5.0 vol% CO2 are shown below. Errors
listed reflect the effect of specific concentrations (shown in parentheses) of an individual
disturbing gas and should be combined when estimating the effect of gas mixtures:
− Halotane (4%) increases < 0.3 vol%
− Isoflurane (5%) increases < 0.4 vol%
− Enflurane (5%) increases < 0.4 vol%
− Desflurane (24%) increases < 1.2 vol%
− Sevoflurane (6%) increases < 0.4 vol%
− Helium (50%) decreases < 0.3 vol%
− If O2 compensation is not activated: O2 (40 … 95%) decreases < 0.3 vol%
− If O2 compensation is activated: O2 (40 … 95%) error < 0.15 vol%
− If N2O compensation is not activated: N2O (40%) increases < 0.4 vol%
− N2O (40 to 80%) increases < 0.8 vol%
− If N2O compensation is activated: N2O (40 to 80%) error < 0.3 vol%
8-3

2.2.4 Conditions exceeding normal

Accuracy specifications under the following conditions nop:
n Ambient temperature 10...40 °C, within ±5 °C of calibration
Ambient pressure 500...800 mmHg, ±50 mmHg of calibration
Ambient humidity 10...98% RH, ±20% RH of calibration
o During warm-up 1 to 10 minutes, under normal conditions
p During warm-up 10 to 30 minutes, under normal conditions
Accuracy under different conditions (see above)

Conditions n and p Condition o
CO2 (0 … 15 vol%) ±(0.3 vol% + 4% of reading) ±(0.4 vol% + 7% of reading)
(at 5 vol% error ±0.5 vol%) (at 5 vol% error ±0.75 vol%)
CO2 (15 … 20 vol%) ±(0.8 vol% + 4% of reading) ±(0.9 vol% + 7% of reading)
(at 5 vol% error ±0.5 vol%) (at 5 vol% error ±0.75 vol%)
2.3 Respiration Rate (RR)

Measurement range 4 to 80 breaths /min
Breath detection 1% change in CO2 level
Accuracy ±1/min in the range 4 to 20 l/min
±5% in the range 20 to 80 l/min
Resolution 1/min
Adjustable low and high limits for respiration rate; alarm for apnea.
8-4

Functional description
3 Functional description
3.1 Measurement principle
3.1.1 CO2 measurement
MiniC is a side stream gas analyzer, measuring real time concentrations of CO2. It is a non
dispersive infrared analyzer, measuring absorption of the gas sample using an optical narrow
band filter.
The infrared radiation detector is thermopile.
Concentration of CO2 is calculated from absorption measured at 4.2 to 4.3 µm.
Figure 2 Absorbance of CO2
3.2 Main components

− Gas sampling system
− MiniC measuring unit
− CPU board
8-5

3.2.1 Gas sampling system

The sampling system draws a gas sample to the analyzer at a fixed rate.
The gas sampling system samples the measured air to the module, and removes water and
impurities from it. A sampling line is connected to the water trap. The pump draws gas through
the sampling line to the gas measuring unit. After the measurement, the gas is exhausted from
the sample gas out connector.
The sample flow is nominally 150 ml/min.
Figure 3 MiniC block diagram
Mini D-fendTM
The sample is drawn through the sampling line. The gas then enters the module through the
water trap, where it is divided into two flows, a main flow and a side flow. The main flow goes
into the analyzer. This flow is separated from the patient side by a hydrophobic filter. The side
flow creates a slight subatmospheric pressure within the Mini D-fend water trap which causes
fluid removed by the hydrophobic filter to collect in the bottle.
Zero valve
The main flow passes through a magnetic valve before proceeding to the analyzer. This valve
is activated to establish the zero point for the MiniC measuring unit. When the valve is
activated, room air is drawn through a filter into the internal system and the gas sensor.
8-6

NafionTM tube 1)
A Nafion tube is used between the water trap and the zero valve to balance the sample gas
humidity with that of ambient air. The tube prevents errors caused by the effect of water vapor
on gas partial pressure when humid gases are measured after calibration with dry gases.
Gas analyzers
After the zero valve and Nafion tube, the gas passes through the miniC measuring unit.
Sample flow differential pressure transducer

The sample flow differential pressure transducer measures pressure drop across a restrictor
and calculates the sample flow from the pressure difference.
Working pressure transducer

The working pressure transducer measures differential pressure between the tubing and
ambient air near the miniC measuring unit.
Atmospheric pressure transducer

The atmospheric pressure transducer measures real-time atmospheric pressure. The following
messages are based on the obtained pressure values: ‘sample line blocked’, ‘check D-fend’,
‘replace D-fend’ and ‘check sample gas outlet’.
Sampling pump and damping chamber

The gas sampling pump is a membrane pump run by a DC-motor. Sample flow is measured
with a differential pressure transducer across a known restriction. The motor is automatically
controlled to maintain a constant flow even when the D-fend water trap ages and starts to get
occluded. It also enables the use of sample tubes with varying lengths and diameters.
NOTE: In no occasion is the flow reversed towards the patient.
1)
1. Nafion is a trademark of Perma Pure Inc.
8-7

Side flow Sample line

Mini
Main flow D-fend
Filter Room air
Zero
valve
MiniC
Diff. Abs.
Pressure Pressure
Sensor Sensor
Diff.
Pressure
Sensor
minic_fem_gastubing.vsd
Pump
Gas out
Figure 4 Gas tubing layout
3.2.2 MiniC measuring unit

The miniC measuring unit is a non-dispersive infrared analyzer measuring absorption of the
gas sample at 4.2 to 4.3 µm infrared wavelength, which is selected using an optical narrow
band filter. The IR lamp is a filament surrounded by thermal isolation. There is a hole in the
isolation, passing the radiation to a conical measuring chamber with 3 mm length. From the
sample chamber, the radiation goes into a thermopile detector with an optical filter in front of
it.
The temperature sensor measures the miniC measuring unit's temperature and it is used for
temperature compensation.
The miniC measuring unit includes a miniC flexible board, which connects the thermopile signal
and the temperature sensor signal to the CPU board.
Figure 5 MiniC measuring unit
8-8

3.2.3 CPU board

The CPU board contains a processor, memories and all the analog signal processing needed. A
MiniC measuring unit is attached to the board with a flexible PCB. Also supply voltage and an
RS485 serial channel are connected to the CPU board using another flexible PCB.
Analog signals (CO2, temperature, absolute and differential pressures and lamp current signals)
are fed to the 16-bit A/D converter. The processor controls the A/D converter and calculates
the CO2 percentage and respiration rate from this data.
The processor controls sample flow by adjusting the pump voltage based on the differential
pressure signal. The processor also controls the current of the IR source and keeps it constant.
Calibration data is stored on the EEPROM.
8-9


Table 1 Module bus connector pin description
Module bus connector Pin No. I/O Signal
13 1
1 I RESET RS485
25 14
2 I -15 VDC (not used)
3 I +15 VDIRTY
4 I +15VDC (not used)
5 I/O -DATA RS485
6 I/O DATA RS485
7 Ground and Shield
8 I -RESET RS485
9 n/c
10 n/c
11 n/c
12 n/c
13 Ground and Shield
14 I +24/+32 VDIRTY depends on power supply (not
used)
15 I Ground DIRTY
16 n/c
17 n/c
18 n/c
19 n/c
20 I GASFR (not used)
21 I CTSD (not used)
22 I TXDD (not used)
23 O RXDD (not used)
24 I +5 VDC (not used)
25 I +5 VDC DIRTY (not used)
8-10

Service procedures
4 Service procedures
4.1 General service information
The field service of the E-miniC module is limited to replacing parts that are available as spare
parts.
GE Healthcare is always available for service advice. Please provide the unit serial number, full
type designation and a detailed fault description.
CAUTION Only trained personnel with appropriate equipment should perform the tests
and repairs outlined in this section. Unauthorized service may void warranty of
the unit.
CAUTION The module electronics can only be repaired and calibrated at the factory.
4.1.1 MiniC measuring unit

WARNING The miniC measuring unit and its components are repaired/calibrated at
the factory. Attempts to repair/calibrate the unit elsewhere will adversely
affect operation of the unit. The information provided is for reference only.
Serviceable parts
• Mini D-fend
• Mini D-fend O-rings
• Nafion tube
• Air filter
• Pump
NOTE: After any component replacement, see chapter “Adjustments and calibrations”.
Calibration interval six months. Preventive maintenance once a year including the change of
Nafion tube and the O-rings of water separator, pump check and calibration, leak test and
absolute pressure sensor check.
4.2 Service check

These instructions include complete procedures for a service check. The service should be
performed after any service repair. Additionally, the service check procedures can also be used
for determining possible failures.
The procedures should be performed in ascending order.
The instructions include a check form (“APPENDIX E”) which should be filled in when performing
the procedures.
The symbol " in the instructions means that the check form should be signed after
performing the procedure.
8-11

4.2.1 Recommended tools
Tool Order No. Notes

Screwdriver Pozi-drive, Torx T10
Ambient pressure manometer Amb. Press. can be checked
from local meteorological
station
Flowmeter TSI model 4140 recommended
Flow cassette 50/1.1 873812
Calibration gas and the regulator 755580 (gas) Contains 5 CO2 and air
755534
Gas Interface Cable 884299
4.2.2 Recommended parts

Parts Order No. Notes
Mini D-Fend 8002174 Pkg of 10 pieces
Sampling line 3m / 10 ft 73319 Pkg of 10 pieces
Mini D-fend O-ring (2 pcs) 656565
Nafion tube 733382
4.2.3 Inspection
General
1. Check internal parts
• all screws are tightened properly
• all cables are connected properly
• tubes are not pinched and there are no sharp bends on them
• all tubes are connected properly
• there are no loose objects inside the module
"
2. Check external parts
• the front cover and the front panel stickers are intact
• the Mini D-fend latch is moving properly
• all connectors are intact and attached properly
"
Reattach the module and check that the locking system moves properly.
8-12

Service procedures
3. Check Mini D-Fend

Detach the Mini D-fend. Check the condition of the rubber O-rings on the metal Mini
D-fend connectors, located in the module front cover.
If necessary, detach the connectors by first disconnecting the tubes, then removing the
locking rings from the back of the front cover.
"
Replace the Mini D-fend and sampling line with new ones.
NOTE: Use only GE Datex-Ohmeda sampling lines in order to ensure proper functioning.
Turn on the monitor.
Configure the monitor screen so that the CO2 curve is shown, for example as follows:
Monitor Setup - Screen Setup - Waveform fields -
Field 6 - CO2
Digit Fields
Lower Field 1 - Gases
If one of the values is increasing faster, it indicates a failure in module bus

communication.
"
4. Flow measurement offset
Enter the service menu Gases:
Gas Unit - Gases
Check that the flow measurement offset, i.e. the shown sample Zero value is within ±10
ml/min.
"
5. Ambient pressure
Check that the shown Ambient value corresponds with the current ambient pressure (±20
mmHg).
"
6. Zero valve check
Feed calibration gas and check that the gas readings in the service menu correspond
with the values on the gas bottle sticker. Keep feeding gas, then activate the zero valve
from the menu. The CO2 reading should drop back to near 0%.
"
7. Nafion tube
Replace the Nafion tube, if necessary.
8-13

NOTE: The Nafion tube should be replaced annually.
"
8. Leak test
Perform the sampling system leak test.
Connect a flow cassette with high flow resistance value (50/1.1) to the end of the
sampling line and start following the Amb-Work value in the service menu. When the
value exceeds 130 mmHg, connect the other port of the flow cassette to the sample gas
out connector and switch off the pump.
Wait until the pressure inside the sampling system is stabilized, then observe the shown
Amb-Work value. The value, i.e. the pressure inside the sampling system should not drop
more than 6 mmHg in 20 seconds.
If the pressure drops more, first check the connections and repeat the test.
"
9. Check the flow rates
Wait until the Sample Flow value returns close to 150 ml/min.
Connect a flow meter to the 3 meter sampling line and check that the flow (the flow meter
reading) is within the following range:
Sampling flow (ml/min) 135...165
If necessary, readjust the sampling flow:
Select Sample gain adj from the menu.
To increase the sampling flow, turn the ComWheel counterclockwise. To decrease the
flow, turn the ComWheel clockwise.
A change of 0.050 in the Gain value changes the flow approximately 7.5 ml/min.
After you have changed the gain, wait until the Sample Flow value on the screen returns
near to the original, then check the flow meter reading again.
"
10. Working pressure
Check that the Amb-Work value in the service menu is within the following range:
Amb-Work (mmHg) 20...50
"
11. Gas calibration
Airway Gas - Gas Calibration
NOTE: The calibration should not be performed before 30 minutes warm-up time.
Use calibration gas 755580 (5% CO2, about 20% O2) for calibrating the E-miniC.
"
12. Occlusion detection
8-14

Service procedures
Block the tip of the sampling line with your finger and check that the message ‘Sample
line blocked’ appears on the monitor screen within 60 seconds.
"
13. Check D-fend
Detach the mini D-fend and check that the message ‘Check D-fend’ appears on the
monitor screen within 30 seconds.
"
14. Apnea detection
Reattach the mini D-fend. Simulate at least 5 breaths by feeding calibration gas into the
sampling line. Check that the shown gas information is correct.
Check that the monitor shows the message ‘Apnea’ within 30 seconds after you have
stopped feeding the gas.
"
15. Final cleaning
Turn off the monitor, disconnect and clean the module.
"
• Fill in all necessary documents.
8-15

8-16

E-MiniC module disassembly and reassembly
5 E-MiniC module disassembly and

reassembly
5.0.1 Before disassembly
NOTE: Wear a grounded, antistatic wristband when handling PC boards. Electrostatic
NOTE: Handle all PC boards by their edges.
5.0.2 Tools needed
- torx screwdrivers; T10

- flat blade screwdriver
- pincers
- antistatic wristband
5.1 To disassemble the module

To disassemble the airway module (see the exploded view of the module in the “E-Modules
Spare parts” slot):
1. Remove the two screws (T10) from the back of the module.
2. While pressing the release latch, pull the module box slowly backwards and remove it
from the main body.
To remove the Module Front Cover from the module, release the snaps that hold the front
cover to the front chassis.
CAUTION When reassembling the module, make sure that the tubes and cables are not
pinched between the boards and the cover.
5.1.1 Pump unit

1. Remove the module cover.
2. Remove the mask.
3. Unplug the hose of the pump.
4. Disconnect the pump’s cable from the CPU board.
5. Remove the three screws that connect the pump unit to the board.
To reassemble the module, reverse the order of the dissassembly steps.
8-16

Figure 6 Uncovered E-miniC module
5.1.2 MiniCO2 assy

1. Remove the module cover.
2. Unplug two tubes from the back of the mask.
3. Remove the mask.
4. Detach the miniCO2 assy from the frame plate by removing the three screws.
5. Disconnect the FM board from the miniCO2 assy.
To reassemble the module, reverse the order of the dissassembly steps.
5.1.3 Instructions after replacing MiniCO2 assy

After replacing the MiniCO2 assy:
• perform the sampling system leak test
• perform the occlusion test
• perform the gas calibration
8-17
5.2 Adjustments and calibrations

5.2.1 Calibrating
NOTE: Ensure that the calibration gas and regulator are functioning properly before calibration.
Perform the annual maintenance of the regulator as required.
The airway module should be calibrated once every six months or whenever there are
indications of errors in the gas readings.
Calibrate the gas measurement with the Datex-Ohmeda calibration gas. Do not use any other
calibration gases.
− Use the regulator 755534.
When you calibrate the E-miniC module, use gas 755580 only and set the O2 concentration to
20%.
Use only recommended calibration gases to guarantee a successful calibration.
During gas calibration, % units are always used for CO2 regardless of selected measuring units.
NOTE: Ensure that the calibration gas and regulator are functioning properly before calibration.
Perform the annual maintenance on the regulator as required.
Figure 7 Attaching regulator to the calibration can

1. Attach the regulator to the gas container.
2. Attach a new sampling line to the water trap. Connect the loose end of the sampling line
to the regulator on the gas container.
8-18

Figure 8 Connecting sampling line to the gas valve and feeding gas
3. Turn on the power. For maximum accuracy, let the monitor warm up for 30 minutes. The
menu item Gas calibration remains gray as long as the message ‘Calibrating gas sensor’
is displayed.
4. Press the Airway Gas key and select Gas calibration.
5. Wait until the ‘Zero ok’ and then the ‘Feed gas’ messages appear after each gas on the
screen.
6. Open the regulator and feed calibration gas until the message ‘Adjust’ appears, then
close the valve. If you use an older brass regulator, the feeding pressure should be
adjusted between 5 and 7 psi.
7. Check that the displayed gas value matches the value on the calibration gas container.
NOTE: When calibrating the E-miniC module, set the O2 level according to the gas, for example
with 755580, set the FiO2 level in the CO2 setup menu to 21-40% and the AIRWAY GAS - CO2
SETUP O2 level to 20%. Adjust the O2 percentage according to the calibration gas (for 755580
the right O2 value is 20%).
NOTE: If an error occurs during calibration or if no gas is fed, the highlighting goes
automatically over the item Recalibrate and the text ‘Calibr. error’ appears. Push the Trim knob
to perform a new calibration.
If adjustments are required:
• Turn the Trim knob to highlight the first gas to be adjusted and then push the Trim knob.
• Turn the Trim knob until the displayed value matches the desired value in the gas bottle
and push it again.
8-19
If the message ‘Zero error’ is displayed, press the Normal Screen key and repeat the
calibration procedure.
The time of the last calibration is shown at the bottom of the menu page.
5.2.2 Gas sampling system adjustment

For flow rate measurements, a flow meter with a low flow resistance and the capability to
measure low flow rates is required. A sampling line of normal length has to be connected to the
monitor as it has a considerable effect on the flow.
5.2.3 Flow rate measurement

If any flow rates are not correct, first replace the Mini D-Fend water trap, then recheck the
flows.
The sampling flow rate is measured by a flow meter at the sampling line. The flow rate should
be between 135 and 165 ml/min. The flow rate is adjusted in the Gases service menu with
Sample gain adj.
5.2.4 Flow rate adjustment

NOTE: Before adjusting the sampling flow, make sure there is no leakage in the sampling
system.
Refer to 5.2.5. Gas calibration.
Wait until the Sample Flow value is back to near 150 ml/min.
Connect a flow meter to the 3 meter sampling line and check that the flow (the flow meter
reading) is within the following range:
Sampling flow (ml/min) 135...165
If necessary, readjust the sampling flow:
Select Sample gain adj from the menu.
To increase the sampling flow, turn the Trim knob counterclockwise.
To decrease the flow, turn the Trim knob clockwise.
A change of 0.050 in the Gain value changes the flow approximately 7.5 ml/min.
8-20

After you have changed the gain, wait until the Sample Flow value on the screen returns near
to the original, then check the flow meter reading again.
5.2.5 Gas calibration

Gas calibration is performed in the Airway Gas menu.
Calibration gas regulator flow check

Interval: every 12 months
Regulator flow specification:
REF 755533 & 755534: 260 – 410 ml/min at 1-10 bar cylinder pressure
REF 755530: 260 – 410ml/min at 5-7psi cylinder pressure
Tools needed: calibration gas can, regulator, piece of silicon hose and flow meter.
Datex-Ohmeda recommends use of TSI 4140 Flow Meter.
Insert the calibration gas regulator on the gas cylinder. Connect a silicon hose between the
regulator and the flow meter. Block the regulator overflow port and open the regulator. Check
the flow rate from the flow meter and verify that the flow is within the specification.
8-21
Troubleshooting
6 Troubleshooting
6.1 Troubleshooting chart for CO2 measurement
Problem Cause/What to do
No response to breathing Sampling line or water trap blocked or loose, or improperly attached.
Water trap container full.
See the gas sampling system troubleshooting.
‘SENSOR INOP.’ message The temperature is too low or high, check the temperature in the service
menu. Supply voltage is too low or high, IR source current or voltage is
too low or high, check current in the service menu.
Pump is not working properly, check sample flow and pump voltage in
the service menu.
Ambient pressure too low or high, check the ambient pressure in the
service menu.
Zero valve not working properly, check the functionality by switching
zero valve on and off in the service menu.
‘ZEROING ERROR’ message Gas zeroing failed. Condensation or residual gases are affecting the zero
measurement. Allow the module to run drawing room air for half an hour
and calibrate again.
‘CHECK D-FEND’ message Amb – Work pressure difference too small.
Probably water trap or the sampling line is not attached properly. Gas
zero valve failure. Pump failure or gas outlet blockage.
‘REPLACE D-FEND’ message Amb – Work pressure difference too big.
Indicates residue build-up on the water trap membrane. This decreases
air flow. Replace the D-fend.
‘SAMPLE LINE BLOCKED’ message Amb – Work pressure difference too big.
Sampling line or water trap is occluded. Water trap container is full. If
occlusion persists, check internal tubing for blockages.
No response to any gas Check Sample Gas Out.
Amb - Work pressure low, flow too small and pump voltage too high.
Sampling line, water trap, or internal tubing is blocked or loose, or
improperly attached. Gas out connector or tubing is blocked.
Zero valve malfunction. Pump failure or pump is worn. Supply voltage
missing. Serial communication error.
Sudden increase in gas display Water trap malfunction. Check all internal tubing and the interior of the
water trap for occlusions or leaks. Replace water trap. Check flow rates.
Abnormally high (or abnormally Pressure transducer failure. Check the Ambient and Amb – Work
low) pressures in Gases service menu.
response to CO2
or sudden occlusion warning
Strong drift in all gases Leak in sampling line or internal tubing (especially in conjunction with too
low readings).
8-22

6.1.1 CO2 measurement

Action • sudden decrease in circulation • check all connections
too low ETCO2 value
• pulmonary embolism • check calibration
• hyperventilation
• very large dead-space
• large shunting
• leak in sampling system
• calibration error
• high by-pass flow from ventilator
too high ETCO2 • hypoventilation • change D-fend
• increased metabolism • check calibration
• D-fend contaminated
• calibration error
waveform clipped • incorrect scaling • change scale
no response to breathing • apnea • check all connections
• (disconnection)
• sampling line or water trap loose or
blocked (air leak)
• sample gas outlet blocked • check that outlet is open

ETCO2 over scale >20% • abnormally high ETCO2 (permissive • let the module run without a
Shown until 32%, hypercapnia) sampling line until the CO2
specified range 0...20% • CO2 sensor contaminated sensor has dried out
• D-fend malfunction
• change D-fend
ETCO2>PaCO2 • unit is mmHg or kPa and ETCO2 is close • change to “wet gas” by using
to arterial PCO2 install/service menu
• “dry gas” as default
6.2 Gas sampling system troubleshooting

The faults which can occur in the sampling system are: leaks or blockages in the tubing, failure
of the sampling pump or the magnetic valves, or diminishing of the flow rates because of dirt
accumulating in the internal tubing.
The following checks should help in localizing the fault. Whenever suspecting the sampling
system and always after having done any work on the sampling system, check and if
necessary adjust the flow rate.
8-23
Troubleshooting
CAUTION The special internal sample tube is mechanically fragile. Sharp bends will
cause leaks.
NOTE: D-fend water trap should be replaced, when the ‘REPLACE D-FEND’ message appears
during the monitor startup.
NOTE: If any liquid has entered the miniC measuring unit due to water trap filter failure, leave
the module running without a sampling line for several hours and check the functions after it
has dried out.
6.2.1 Sampling system leak test

1. Connect a flow cassette with a high flow resistance value (50/1.1) to the end of the
sampling line and start following the ‘Amb-Work’ value in the service menu. When the
value exceeds 130 mmHg, connect the other port of the flow cassette to the sample gas
out connector and switch off the pump.
2. Wait until the pressure inside the sampling system is stabilized, then observe the shown
Amb-Work value. The value, i.e. the pressure inside the sampling system, should not drop
more than 6 mmHg in 20 seconds.
3. If the pressure drops more, first ensure the connections you have made and repeat the
test.
6.3 MiniC unit troubleshooting

CAUTION The miniC measuring sensor can only be repaired and calibrated at the
factory. In case of failure, the complete miniC unit should be sent to
Datex-Ohmeda for factory exchange.
6.4 Error messages

Message Explanation
Occlusion or Sample Line Blocked The sample tube inside or outside the monitor is blocked or water
trap is occluded. If occlusion persists, measured gas values
disappear.
Continuous occlusion. Check Occlusion over 40 seconds.
sample line and D-fend.
Check D-fend - The water trap is not connected
- There is a leak in the sampling line inside the module. If air leak
persists, measured gas values disappear.
Check sample gas out.
(Air leak detected.) Check water Air leak over 40 seconds.
trap and sample gas out-flow.
Press normal screen to continue.
Replace D-fend (replace water Indicates residue build-up on the water trap membrane. This
trap) decreases air flow.
Gas calibration is not available Entering calibration is not allowed during 5 minutes after power up
during first 5 minutes/during and during occlusion or air leak.
occlusion/during air leak
8-24

Message Explanation
Gas out blocked - Gas out connector on the front panel, or the exhaust line
connected to it, is blocked.
- If the sample gas is returned to the patient circuit, the filter in the
return kit may be occluded.
- Make sure the sample gas outlet is connected to an open
scavenging system only where gas is removed in room pressure.
Recalibration Time out, fluctuating gases, gain adjusted “over”.
Zero error Unsuccessful zeroing.
Unstable, Calibr error Unsuccessful calibration.
Menu messages during
calibration:
Zero error Unsuccessful zeroing.
Adjust Calibration gas accepted and monitor is ready for adjusting the gas
values to match the calibration gas concentration.
Unstable Unsuccessful calibration.
8-25
Software download instruction
APPENDIX A: Software download instruction
1.1 Overview
This software download tool is a Windows-based software download application for B40 and
B20 patient monitor.
WARNING The installation must only be done while the monitor is not connected to a
patient in order to protect the patient and user from electrical shock.
CAUTION All user settings will be lost after installation of new monitor software. Save
user settings before starting software installation.
CAUTION Make sure that the monitor is connected to AC power source, or the batteries
are fully charged. Lost of power during software installation may result in
software installation failure.
1.2 System requirements

• PC with Microsoft Windows XP
• B40/B20 software download CD
− B40/B20 monitor full softwares:
VSP-A, Uboot, BOOTSTRAP, Kernel, file system
− B40/B20 language files
− Software download tool
− B40/B20 software download instruction
• CAT-5 Straight through network cable
• Standard 9 pin serial cable
1.3 Software installation

NOTE: You can save your settings in Save Modes menu before software installation.
1. Connect PC and monitor with the 9 pin serial cable
2. Connect PC and monitor into the same network with a network cable
3. Close your computer’s firewall and set the IP address as 192.168.0.1, set the gateway as
192.168.0.254
A-1

4. Run b40_download_tool.exe file in PC.
NOTE: All information in the figure is just for reference.
5. Enter the User Name , Passward, then click Log in

The default user name is “GE”, and the password is “b40”, both of them are case sensitive.
NOTE: The default location for software images is “D:\b40_images“, if files missing in this
folder, a warning dialog will appear to notice you. Please select the Images Path again.
NOTE: Before download, please also make sure the COM Port in PC is the one connect to
monitor. You can check the settings from Device Manager of PC, then choose the correct
port by Com Part in this download tool.
6. Click Full Download button will download all the images including bootstrap, uboot, logo,
kernel, file system, vsp and language packages.
Click Quick Download button only will download file system, vsp and language packages.
A-2

Software download instruction
After you click Full Download or Quick Download button, a dialog will appear to notice
you
Make sure to click “OK” first to close the dialog, then reset the monitor, if the monitor is
power off, please power on the monitor.
According to the status bar and progress bar, you can see the download status. When
the download is complete, the status bar will show “Downloading is Complete”.
7. Disconnect the main power and batteries to turn off the monitor, then connect the power
and press ON/OFF button to restart the monitor.
1.4 Troubleshooting
First, check the Ethernet and COM port connection, then restart the software to try it again. If
still not worked, please refer to the flow chart in Troubleshooting chapter, the 1.1. General
troubleshooting
A-3

A-4

APPENDIX B: ElectroMagnetic Compatibility

Table 1 Guidance and manufacturer’s declaration – electromagnetic
emissions
Guidance and manufacturer’s declaration – electromagnetic emissions

The B40/B20 monitor is intended for use in the electromagnetic environment specified below. The
customer or the user of the B40/B20 should assure that it is used in such an environment.
Emissions test Compliance Electromagnetic environment - guidance
RF emissions Group 1 The B40/B20 uses RF energy only for its internal function.
CISPR 11 Therefore, its RF emissions are very low and are not likely to
cause any interference in nearby electronic equipment.
RF emissions Class A The B40/B20 Patient Monitor is suitable for use in all
CISPR 11 establishments other than domestic establishments and those
directly connected to the public low-voltage power supply
Hermonic emissions Class A
network that supplies buildings used for domestic purposes.
IEC 61000-3-2
Voltage fluctuations/ Class A
flicker emissions
IEC 61000-3-3
B-1


immunity
Guidance and manufacturer’s declaration – electromagnetic immunity

The B40/B20 is intended for use in the electromagnetic environment specified below. The customer or the user
of the B40/B20 should assure that it is used in such an environment.
Immunity test IEC 60601 test level Compliance level Electromagnetic environment -
guidance
Electrostatic ±6 kV contact ±6 kV contact Floors should be wood, concrete or
discharge (ESD) ceramic tile. If floors are covered with
IEC 61000-4-2 ±8 kV air ±8 kV air synthetic material, the relative
humidity should be at least 30%.
Electrical fast ±2 kV for power ±2 kV for power Mains power quality should be that of
transients/bursts supply lines supply lines a typical commercial or hospital
IEC 61000-4-4 ±1 kV for input/output ±1 kV for input/output environment.
lines lines
Surge ±1 kV differential ±1 kV differential Mains power quality should be that of
IEC 61000-4-5 mode mode a typical commercial or hospital
±2 kV common mode ±2 kV common mode environment.
Voltage dips, short <5% UT <5% UT Mains power quality should be that of
interruptions and (>95% dip in UT) (>95% dip in UT) a typical commercial or hospital
voltage variations on for 0.5 cycle for 0.5 cycle environment. If user of the equipment
power supply lines requires continued operation during
IEC 61000-4-11 40% UT 40% UT power mains interruptions, it is
(60% dip in UT) (60% dip in UT) recommended that the equipment be
for 5 cycles for 5 cycles powered from an uninterruptible
power supply or a battery.
70% UT 70% UT
(30% dip in UT) (30% dip in UT)
for 25 cycles for 25 cycles
<5% UT <5% UT
(>95% dip in UT) (>95% dip in UT)
for 5 sec for 5 sec
Power frequency 3 A/m 3 A/m Power frequency magnetic field
(50/60 Hz) magnetic should be at levels characteristic of a
field typical location in a typical
IEC 61000-4-8 commercial or hospital environment.
NOTE UT is the a.c. mains voltage prior to application of the test level.
B-2


immunity
Guidance and manufacturer’s declaration – electromagnetic immunity

The B40/B20 is intended for use in the electromagnetic environment specified below. The customer or the user
of the B40/B20 should assure that it is used in such an environment.
Immunity test IEC 60601 test level Compliance Electromagnetic environment - guidance
level
Portable and mobile RF communications equipment
should be used no closer to any part of the
equipment, including cables, than the recommended
separation distance calculated from the equation
applicable to the frequency of the transmitter.
Recommended separation distance
Conducted RF 3 Vrms 3 Vrms d = 1.2 P
IEC 61000-4-6 150 kHz to 80 MHz
Radiated RF 3 V/m 3 V/m d = 1.2 P 80 MHz to 800

IEC 61000-4-3 80 MHz to 2.5 GHz
d = 2.3 P 800 MHz to 2.5
where P is the maximum output power rating of the

transmitter in watts (W) according to the transmitter
manufacturer and d is the recommended separation
distance in metres (m).
Field strengths from fixed RF transmitters, as
determined by an electromagnetic site survey, a
should be less than the compliance level in each
frequency range. b
Interference may occur in the vicinity of equipment

marked with the following symbol:
NOTE 1 At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE 2 These guidelines may not apply in all situations. Electromagnetic propagation is affected by
absorption and reflection from structures, objects and people.
a
Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones
and land mobile radios, amateur radio, AM and FM radio broadcast and TV broadcast cannot be
predicated theoretically with accuracy. To assess the electromagnetic environment due to fixed RF
transmitters, an electromagnetic site survey should be considered. If the measured field strength in
the location in which the equipment is used exceeds the applicable RF compliance level above, the
equipment should be observed to verify normal operation. If abnormal performance is observed,
additional measures may be necessary, such as reorienting or relocating the equipment.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
B-3

Table 4 Recommended separation distances between portable and mobile RF

communications equipment and the B40 monitor
Recommended separation distances between portable and mobile RF

communications equipment and the B40.
The B40/B20 monitor is intended for use in an electromagnetic environment in which radiated RF
disturbances are controlled. The customer or the user of the equipment can help prevent electromagnetic
interference by maintaining a minimum distance between portable and mobile RF communications
equipment (transmitters) and the equipment as recommended below, according to the maximum output
power of the communications equipment.
Rated maximum Separation distance according to frequency of transmitter
output power of m
transmitter
150 kHz to 80 MHz 80 MHz to 800 MHz 800 MHz to 2.5 GHz
W
d = 1.2 P d = 1.2 P d = 2.3 P
0.01 0.12 0.12 0.23

0.1 0.37 0.37 0.74
1 1.17 1.17 2.33
10 3.69 3.69 7.38
100 11.67 11.67 23.33
For transmitters rated at a maximum output power not listed above, the recommended separation
distance d in meters (m) can be estimated using the equation applicable to the frequency of the
transmitter, where P is the maximum output power rating of the transmitter in watts (W) according to the
transmitter manufacturer.
NOTE 1 At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
NOTE 2 These guidelines may not apply in all situations. Electromagnetic propagation is affected by
absorption and reflection from structures, objects and people.
B-4

Installation and checkout form, B40/B20
APPENDIX C: Installation and checkout form,

B40/B20
Customer
Service
Service engineer Date
Monitor Installation
L- E- N-
OK = Test OK N.A. = Test not applicable Fail = Test failed
Electrical Safety Tests OK N.A. Fail
2.4. Power Outlet Test
2.5. Power cord and plug
2.6. Ground (Earth) Integrity
< 0.1 ohms/

Ground continuity test
< 0.2 ohms
< 0.1 ohms/
Impedance of protective earth connection
< 0.2 ohms
2.7. Ground (earth) wire leakage current tests
< 500 µA/

Normal Condition (NC)
< 300 µA
Single Fault Condition (SFC) < 1 mA
2.8. Enclosure (Touch) leakage current test
Normal Condition (NC) < 100 µA/
< 500 µA/

Single Fault Condition (SFC)
< 300 µA
2.9. Patient (source) leakage current test
C-1

Single Fault Condition (SFC) < 50 µA/
2.10. Patient (sink) leakage current test < 50 µA/
Notes
Visual Inspection OK N.A. Fail
3.1. Visual inspection
Functional Inspection OK N.A. Fail
3.2.1. Start-up
3.2.2. Display S/N
3.2.3. Keyboard(s) S/N
3.2.4. Frame unit S/N
3.2.5. E-minC module with CO2 measurement S/N
3.2.6. Multiparameter Hemodynamic Modules S/N
. ECG and RESP measurements
. Temperature measurement
. Invasive blood pressure measurement
. SpO2 measurement
. Non invasive blood pressure measurement
3.2.7. Recorder
3.2.8. Network connection
3.2.9. Final
Notes
C-2

Installation and checkout form, B40/B20
Signature
C-3

C-4

Maintenance and checkout form, B40/B20
APPENDIX D: Maintenance and checkout form,

B40/B20
Customer
Service
Monitor Installation
Measuring equipment used:

Equipment / tool: Manufacturer: Model/Type/Part Serial Number / Calibration
Number: ID: Date:
2.4. Power Outlet Test
2.5. Power cord and plug
2.6. Ground (Earth) Integrity
< 0.1 ohms/

Ground continuity test
< 0.2 ohms
< 0.1 ohms/
Impedance of protective earth connection
< 0.2 ohms
2.7. Ground (earth) wire leakage current tests
< 500 µA/

Normal Condition (NC)
< 300 µA
Single Fault Condition (SFC) < 1 mA
D-1

2.8. Enclosure (Touch) leakage current test
< 500 µA/

Single Fault Condition (SFC)
< 300 µA
2.9. Patient (source) leakage current test
Single Fault Condition (SFC) < 50 µA/
2.10. Patient (sink) leakage current test < 50 µA/
Notes
Visual Inspection OK N.A. Fail
4.1.2. General
Notes
4.2.1. General
4.2.2. Display
4.2.3. Keyboard(s)
4.2.4. Time and date
Notes
4.2.5. Hemo Module
. ECG measurement
1. Normal Sinus Rhythm
2. Pacemaker Detection
3. Asystole Detection
4. Leads Off Detection
D-2

Maintenance and checkout form, B40/B20
Notes
. Respiration measurement
5. Respiration Rate
6. Apnea Detection
Notes
. Temperature measurement
7. Temperature detection
Notes
. Invasive blood pressure measurement
8. Zeroing
9. Static Pressure
10. Pressure Waveforms
Notes
. SpO2 measurement
11. Test measurement
Notes
. Non Invasive Blood Pressure measurement
12. NIBP Leak Test
13. NIBP calibration
14. NIBP hose detection
Notes
4.2.6. Loudspeaker
4.2.7. Monitor software
4.2.8. Watchdog circuitry
D-3

4.2.9. Batteries
4.2.10. Network
4.2.11. Final cleaning
Notes
Used Spare Parts
Notes
Signature
D-4

Appendix E, Service check form, Single-width Airway Module E-miniC
APPENDIX E Service check form,

Single-width Airway Module E-miniC
Customer
Service Module type S/N
Measuring equipment / test gases used:

Equipment / tool / gas: Manufacturer: Model/Type/Part Serial Number / Calibration
Number: ID: Date:
General OK N.A. Fail OK N.A. Fail
1. Check internal parts 2. Check external parts
Notes
CO2 measurement
3. Check Mini D-Fend
4. Flow measurement offset ±10 ml/min
5. Ambient pressure 6. Zero valve check
7. Nafion tube
<6 mmHg/20 sec

8. Leak test
9. Check the flow rates

Sampling flow 135...165 ml/min
10. Working pressure
Amb-Work 20...50 mmHg
E-1
11. Gas calibration 12. Occlusion detection
13. Check D-fend 14. Apnea detection
Notes
15. Final cleaning
Notes
Used spare parts
Signature
E-2

Asian Headquarters
GE Medical Systems
GE Medical Systems GE Medical Systems
Information Technologies Asia
Information Technologies, Inc. Information Technologies GmbH
1 Huatuo Road
8200 West Tower Avenue Munzingerstrasse 5
Zhangjiang Hi-tech Park Pudong
Milwaukee, WI 53223 USA 79111 Freiburg
Shanghai, P.R. China, 201203
Tel:+ 1 414 355 5000 Germany
Tel: + 86 21 5257 4650
1 800 558 5120 (US only) Tel: + 49 761 45 43 - 0
Fax: + 86 21 5208 2008
Fax:+ 1 414 355 3790 Fax: + 49 761 45 43 - 233
GE Medical Systems Information Technologies, a General Electric Company, going to market as

GE Healthcare
www.gehealthcare.com
0459

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ProCare B40/B20 Patient Monitor

ProCare B40/B20 Patient Monitor

Technical Reference Manual

Conformity according to the Council Directive 93/42/EEC concerning Medical Devices

All specifications subject to change without notice.

Order code 2050802-001

GE Medical Systems Information Technologies, Inc. GE Healthcare

6 Field replaceable unit

4.1.1 MiniC measuring unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Appendix A: Software download instruction A-1

Intended purpose of this device (Indications for use)

Notes to the reader

Responsibility of the manufacturer

Document no. 2050802-001

" Sign the check form after performing the procedure.

Illustrations and names

Document no. 2050802-001

Figure 1 B40/B20 monitor with hemo and extension rack modules

Document no. 2050802-001

- On the rear panel this symbol indicates the following warnings

Type BF (IEC 60601-1) protection against electric shock. Isolated

Equipotentiality. Monitor can be connected to potential equalization

Bell cancel. Audio pause.

Document no. 2050802-001

Home. Return to the main display.

Standby or power indicator.

Maunfacturer: This symbol indicates the name and the address of

European authorized representative.

European Union Declaration of Conformity.

Prescriptive Device. USA only. For use by or on the order of a

Keep dry. Protect from rain.

This way up.

This symbol depicts the transportation and storage atmospheric

Document no. 2050802-001

Recycled materials or may be recycled.

This symbol indicates that the waste of electrical and electronic

The separate collection symbol is affixed to a battery, or its

Battery (A) charging (white bar)

Battery (A) failure

Both batteries failed

Battery (A) missing

Submenu. Selecting a menu item with this symbol opens a new

Document no. 2050802-001

The monitor is connected to Network.

A lung next to the respiration rate value indicates that respiration

Document no. 2050802-001

1.2 Safety information

1.2.2 Safety message signal words

1.2.3 Safety precautions

Document no. 2050802-001

• Only connect to supply mains with protective earth

1.2.4 ESD precautionary procedures

ESD precautionary procedure training

Document no. 2050802-001

The minimum contents of an ESD precautionary procedure training should include an

Document no. 2050802-001

2.2 Bus structure

LCD LCD DATA BUS

Figure 2 General bus structure of monitor