Tenma Manual PDF
Tenma Manual PDF
Tenma Manual PDF
OPERATING MANUAL
Model 72-1016: OPERATING MANUAL
TABLE OF CONTENTS
TITLE PAGE
Overview 3
Inspection 4
Safety Information 5
Rules For Safe Operation 6
International Electrical Symbols 8
The Meter Structure 9
Rotary Switch 10
Functional Buttons 11
Display Symbols 12
Measurement Operation 16
A. DC or AC Voltage Measurement 16
B. DC or AC Current Measurement 18
C. Measuring Resistance 20
D. Testing Continuity 22
E. Testing Diodes 24
F. Capacitance Measurement 26
G. Frequency Measurement 28
H. Temperature Measurement 30
I . Measuring Transistor 32
Operation of Hold Mode 33
The POWER Button 33
The SELECT Button 33
Turning on the Display Backlight 34
The RANGE Button 34
The MAX MIN Button 35
AC/AC+DC Button 35
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Model 72-1016: OPERATING MANUAL
TITLE PAGE
POWER INPUT Switch 35
Sleep Mode 36
RS232 Button 36
General Specifications 37
Accuracy Specifications 38
A. DC Voltage 38
B. AC Voltage 39
C. DC Current 41
D. AC Current 42
E. Resistance 43
F. Continuity Test 44
G. Diode Test 44
H. Capacitance 45
I . Frequency 46
J. Temperature 47
K. Transistor 47
Maintenance 48
A. General Service 48
B. Replacing the Fuses 49
C. Replacing the Battery 51
RS232C and USB Serial Port 52
System Requirements for Installing the 72-1016 Interface Program 52
RS232C Serial Port 53
A. Connecting between the Meter and computer 53
B. RS232C Port Cable 54
C. Setting of RS232C Serial Ports 54
USB Serial Port 55
A. Connecting between the Meter and computer 55
B. Setting of USB Serial Ports 55
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Model 72-1016: OPERATING MANUAL
Warning
To avoid electric shock or personal injury, read the
Safety Information and Rules for Safety Operation
carefully before using the Meter.
D i g i t a l B e n c h - Ty p e Tr u e R M S M u l t i m e t e r
Model 72-1016 (hereafter referred to as the Meter)
has auto and manual range options with maximum
reading of 5999 counts and 3-5/6 digits which has a
unique outlook design.
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Model 72-1016: OPERATING MANUAL
Inspection
Open the package case and take out the Meter. Check the following items carefully for missing or damaged parts:
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Model 72-1016: OPERATING MANUAL
Safety Information A Note identifies the information that user should pay
This Meter complies with the standards IEC61010: in special attention to.
pollution degree 2, overvoltage category (CAT. I 1000V,
CAT.II 600V) and double insulation. International electrical symbols used on the Meter and
in this Operating Manual are explained on page 8.
CAT III: Distribution level, fixed installation, with smaller
transient overvoltages than CAT. IV
CAT IV: Primary supply level, overhead lines, cable
systems etc.
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Model 72-1016: OPERATING MANUAL
Rules For Safe Operation l When the Meter working at an effective voltage over
60V DC, or 30V RMS AC, special care should be
Warning taken for there is danger of electric shock.
To avoid possible electric shock or personal injury, l Use the proper terminals, function, and range for your
and to avoid possible damage to the Meter or to the measurements.
equipment under test, adhere to the following rules: l If the value to be measured is unknown, use the
maximum measurement position and reduce the range
l Before using the Meter inspect the case. Do not use
step by step until a satisfactory reading is obtained.
the Meter if it is damaged or the case (or part of the l Do not use or store the Meter in an environment of
case) is removed. Look for cracks or missing plastic. high temperature, humidity, explosive, flammable gas
Pay attention to the insulation around the connectors. or strong magnetic field. Do not use the meter if
l Inspect the test leads for damaged insulation or exposed allowed to get wet. Even after complete drying,
metal. Check the test leads for continuity. Replace incorrect readings could occur, causing a potentially
damaged test leads with identical model number or hazardous condition.
electrical specifications before using the Meter. l When using the test leads, keep your fingers behind
l Do not apply more than the rated voltage, as marked the finger guards.
on the Meter, between the terminals or between any l Disconnect circuit power and discharge all high-voltage
terminal and ground. capacitors before testing resistance, continuity, diodes,
l Prior to measurement, ensure the rotary selector current, or capacitance.
switch is in the proper position. To prevent potential l Before measuring current, check the Meters fuses
damage to the meter, do not change range or mode and turn off power to the circuit before connecting the
during measurement. Meter to the circuit.
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Model 72-1016: OPERATING MANUAL
l Replace the battery as soon as the battery indicator l Turn the Meter power off when it is not in use.
appears. With a low battery, the Meter might l Remove batteries from meter if use of battery power
produce false readings that can lead to electric shock is not anticipated for long periods of time.
and personal injury. l Routinely check installed batteries for leaking. Remove
l Remove test leads, temperature probe, RS232C immediately if evidence of leaks exist.
interface cable, and alligator clip from the Meter and
turn the Meter power off before opening the Meter
case.
l When servicing the Meter, use only the same model
number or identical electrical specifications
replacement parts.
l The internal circuit of the Meter shall not be altered
at will to avoid damage of the Meter and any accident.
l Soft cloth and mild detergent should be used to clean
the surface of the Meter when servicing. No abrasive
and solvent should be used to prevent the surface
of the Meter from corrosion, damage and accident.
l The Meter is suitable for indoor use only.
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Model 72-1016: OPERATING MANUAL
AC or DC
Ground
Double Insulated
Warning. Refer to the Operating Manual
Low Battery
Continuity Test
Diode
Capacitance Test
Fuse
Conforms to Standards of European Union
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(Figure 1)
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Rotary Switch
Below table indicated for information about the rotary switch positions:
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Functional Buttons
Below table indicated for information about the functional button operations.
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12 10 1 11
(Figure 2)
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Model 72-1016: OPERATING MANUAL
Measurement Operation
A. DC or AC Voltage Measurement (See figure 3)
Warning
To avoid personal injury, or damage to the Meter from
electric shock, please do not attempt to measure
voltages higher than 1000V although readings may
be obtained.
To measure DC/AC voltage, connect the Meter as
follows:
1. Insert the red test lead into the V terminal and the
black test lead into the COM terminal. If the measured
value is less than 600mV, insert the red test lead
into mV terminal instead and press RANGE button
to select manual range 600.0mV mode, the LCD
displays MANUAL and mV.
2. Set the rotary switch to V ; press SELECT button
to select DC or AC measurement mode. (Figure 3)
3. Connect the test leads across with the object being
measured. The measured value shows on the display.
AC measurement displays True RMS value.
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Warning
Before connecting the meter in series with the circuit
under test, be sure power to the circuit is off to avoid
the possibility of arcing.
If the fuse burns out during measurement, the Meter
may be damaged and there is risk of personal injury
to the operator.
Use proper terminals, function, and range for the
measurement. When the test leads are connected to
the current terminals, do not parallel them across any
circuit.
To measure current, do the following:
1. Insert the red test lead into the A mA terminal and
the black test lead into the COM terminal.
2. Set the rotary switch to an appropriate measurement
position in A , mA or A , press SELECT button
to select AC or DC measurement mode.
3. Connect the test leads in series with the object being (Figure 4)
measured. The measured value shows on the display.
AC measurement displays True RMS value.
4. Press AC/AC+DC button to measure AC+DC
currents true RMS
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Model 72-1016: OPERATING MANUAL
Note
l If the value of current to be measured is unknown,
use the maximum measurement position, and reduce
the range step by step until a satisfactory reading is
obtained.
l For safety sake, each measurement time of high
current (>5A) should be less than 10 seconds and
the interval time between 2 measurements should
be greater than 15 minutes.
l When current measurement is complete, disconnect
the test leads from the circuit under test. Disconnect
the test leads from the input terminals on the meter.
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Model 72-1016: OPERATING MANUAL
Warning
To avoid damage to the Meter or to the devices under
test, disconnect circuit power and discharge all the
high-voltage capacitors before measuring resistance.
To avoid possible injury, please do not attempt to input
voltages higher than 60V DC or 30V AC.
To measure resistance, connect the Meter as follows:
1 . Insert the red test lead into the terminal and the
black test lead into the COM terminal.
2 . Set the rotary switch to , press SELECT
button to select measurement mode.
3 . Connect the test leads across with the object being
measured. The measured value shows on the display.
(Figure 5)
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Warning
To avoid damage to the Meter or to the devices under
test, disconnect circuit power and discharge all the
high-voltage capacitors before testing for continuity.
To avoid personal injury, please do not attempt to
input voltages higher than 60V DC or 30V AC.
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Model 72-1016: OPERATING MANUAL
Note
l In continuity mode, the resistance range is 600 ,
and the open circuit voltage is approximately 1.2V.
l When continuity testing has been completed,
disconnect the connection between the test leads
and the circuit under test, and remove the test leads
from the input terminals of the Meter.
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Model 72-1016: OPERATING MANUAL
Warning
To avoid possible damage to the Meter and to the
device under test, disconnect circuit power and
discharge all high-voltage capacitors before testing
diodes.
To avoid personal injury, please do not attempt to
input voltages higher than 60V DC or 30V AC.
(Figure 7)
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Model 72-1016: OPERATING MANUAL
To test a diode out of a circuit, connect the Meter as follows: l When diode testing is completed, disconnect the test
1. Insert the red test lead into terminal and the black leads from the device under test, and remove the
test lead into the COM terminal. test leads from the input terminals of the meter.
2. Set the rotary switch to and press SELECT
button to select measurement mode.
3. For forward voltage drop readings on any
semiconductor component, place the red test lead
on the components anode and place the black test
lead on the components cathode. The measured
value shows on the display.
Note
l Connect the test leads to the proper terminals as
said above to avoid error display. The LCD will
display OL indicating diode being tested is open or
polarity is reversed. The unit of diode is Volt (V),
displaying the forward voltage drop readings.
l Open circuit voltage is around 2.7V.
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Model 72-1016: OPERATING MANUAL
Warning
To avoid damage to the Meter or to the equipment
under test, disconnect circuit power and discharge
all high-voltage capacitors before measuring
capacitance. Use the DC Voltage function to confirm
that the capacitor is discharged.
(Figure 8)
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Warning
To avoid the risk of personal injury, do not attempt to
measure frequency with voltage higher than 30V RMS.
(Figure 9)
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Model 72-1016: OPERATING MANUAL
Note
l When making frequency measurements, the
measured signal "a", must fall within the following
voltage level:
When 10Hz ~ 1MHz :150mV a 30V rms
When > 1MHz~ 10MHz :300mV a 30V rms
When > 10MHz~ 50MHz :600mV a 30V rms
When > 50MHz :Unspecified
l When frequency measurement is complete,
disconnect the test leads from the circuit under test,
and remove from the input terminals of the meter.
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(Figure 10)
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(Figure 11)
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Model 72-1016: OPERATING MANUAL
AC/AC+DC Button
It is used to select measuring AC or AC+DC when
measuring AC. Press it only at the AC voltage or current
measuring mode which is at the rotary switch
position V , mV ,A , mA or A . +DC will
be displayed when it is pressed under DC measurement
mode.
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Accuracy Specifications
Accuracy: (a% reading + b digits),guarantee for 1 year.
Operating temperature: 230C 50C.
Relative humidity: not more than 75% RH.
Temperature coefficient: 0.1 x (specified accuracy)/10C.
None:
Under the influence of Radiated, Radio-Frequency Electromagnetic Field phenomenon, the captioned model may
malfunction and can self-recover after the test.
A. DC Voltage
Range Resolution Accuracy Overload Protection
600mV 0.1mV (0.6%+2)
6V 0.001V
1000V
60V 0.01V (0.3%+2)
600V 0.1V
1000V 1V (0.5%+3)
Remarks:
l Input Impedance:
At 600mV range : Around > 3000M .
At all other ranges: Around 10M .
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B. AC Voltage
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Remarks:
l Input Impedance:
At 600mV range : Around > 3000M
At all other ranges: Around 10M
l Displays:
True RMS (applicable to the range of 10%~95%)
At 1000V range: AC peak factor 1.5.
All other ranges: AC peak factor 3.0.
Input short circuit has around less than 30 remaining digits, it will not affect accuracy.
AC+DC measurement accuracy = range's accuracy + 1%
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C. DC Current
Remarks:
l At 5A range: Continuous measurement is allowed.
l At >5A range: For continuous measurement 10 seconds and interval not less than 15 minutes.
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Model 72-1016: OPERATING MANUAL
D. AC Current
Remarks:
l At 5A range: Continuous measurement is allowed.
l At >5A range : For continuous measurement 10 seconds and interval not less than 15 minutes.
l Displays:
True RMS (applicable to the range of 10%~95%)
AC peak factor 3.0.
Input short circuit has around less than 30 remaining digits, it will not affect accuracy.
AC+DC measurement accuracy = range's accuracy + 1%
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E. Resistance
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F. Continuity Test
G. Diode Testst
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H. Capacitance
Remarks:
l At 6nF, 60nF and 600nF Range: reading must subtract the test lead open circuit capacitance value.
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I. Frequency
Remarks:
l Input scope (a): (DC electric level is zero)
When 10Hz ~ 1MHz : 150mV a 30V rms
When > 1MHz ~ 10MHz : 300mV a 30V rms
When > 10MHz ~ 50MHz : 600mV a 30V rms
When > 50MHz : Unspecified
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Model 72-1016: OPERATING MANUAL
J. Temperature
Remarks:
l The included point contact temperature probe can only be used to measure under 2300C temperature. For any
measurement higher than that, the rod type temperature probe must be used instead.
K. Transistor
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Warning
To avoid electrical shock or arc blast, or personal
injury or damage to the Meter, use specified fuses
ONLY in accordance with the following procedure.
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Model 72-1016: OPERATING MANUAL
Warning
To avoid false readings, which could lead to possible
electric shock or personal injury, replace the battery
as soon as the battery indicator appears when
using battery to power on the Meter.
To replace the battery:
1. Press the POWER to turn the Meter off and remove
all connections from the terminals.
2. Use a coin to open the accessories compartment at
the top of the front case.
3. Use a coin to open the battery compartment inside
the accessories compartment located at the top of
he front case.
4. Remove all the batteries from the battery
compartment.
5. Replace the battery with new 6pcs of 1.5V battery
(R14). (Figure 13)
6..Rejoin the battery compartment and also the
accessories compartment located at the top of the
front case.
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To COMPUTER
(Figure 14)
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The Meter Computer Default of RS232C serial port for communication is set as:
D-sub D-sub D-sub Baud Rate 19200
9 Pin Male 9 Pin Female 25 Pin Female Start bit 1
1 (DCD) 1 (DCD) 8 (DCD) Stop bit 1
2 (RXD) 3 (TXD) 2 (TXD)
Data bits 7
Parity Odd
3 (TXD) 2 (RXD) 3 (RXD)
4 (DTR) 4 (DTR) 20 (DTR)
5 (SG) 5 (SG) 7 (SG)
6 (DSR) 6 (DSR) 6 (DSR)
7 (RTS) 7 (RTS) 4 (RTS)
8 (CTS) 8 (CTS) 5 (CTS)
9 (RI) 9 (RI) 22 (RI)
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