2000 3000 X Series Service Guide
2000 3000 X Series Service Guide
2000 3000 X Series Service Guide
2000/3000 X-Series
Oscilloscopes
Service Guide
Notices
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2 Testing Performance
This chapter explains how to verify correct oscilloscope operation and perform
tests to ensure that the oscilloscope meets the performance specifications.
4 Troubleshooting
This chapter begins with suggestions for solving general problems that you may
encounter with the oscilloscope. Procedures for troubleshooting the oscilloscope
follow the problem solving suggestions.
5 Replacing Assemblies
This chapter describes how to remove assemblies from the 2000/3000 X-Series
oscilloscope.
6 Replaceable Parts
This chapter describes how to order replaceable assemblies and parts for the
Keysight 2000/3000 X-Series oscilloscopes. It includes diagrams and parts lists
for hardware that you can order.
7 Safety Notices
At the front of the book you will find safety notice descriptions and document
warranties.
Figures / 9
Tables / 11
2 Testing Performance
Overview / 18
List of Test Equipment / 19
Conventions / 20
To construct the test connector (for use with MSO models
only) / 21
To test digital channels (MSO models only) / 23
To verify digital channel threshold accuracy (MSO models
only) / 24
When to Test / 24
What to Test / 24
Verifying Test Results / 24
To verify DC vertical gain accuracy / 28
To verify dual cursor accuracy / 35
To verify bandwidth (-3 dB) / 40
To verify time base accuracy / 45
To verify trigger sensitivity / 47
Test Internal Trigger Sensitivity (all models) / 48
Test External Trigger Sensitivity / 50
Keysight 2000 X-Series Oscilloscopes Performance Test
Record / 53
Keysight 3000 X-Series Oscilloscopes Performance Test
Record / 55
4 Troubleshooting
Solving General Problems with the Oscilloscope / 64
If there is no display / 64
If there is no trace display / 64
If the trace display is unusual or unexpected / 64
If you cannot see a channel / 65
Verifying Basic Operation / 66
To power-on the oscilloscope / 66
To perform hardware self test / 66
To perform front panel self test / 67
To verify default setup / 67
5 Replacing Assemblies
6 Replaceable Parts
Ordering Replaceable Parts / 74
Listed Parts / 74
Unlisted Parts / 74
Direct Mail Order System / 74
Exchange Assemblies / 75
Exploded Views / 76
Replaceable Parts List / 77
7 Safety Notices
Warnings / 82
To clean the instrument / 83
Safety Symbols / 84
Index
1 Characteristics and
Specifications
Power Requirements / 13
Measurement Category / 14
Environmental Conditions / 16
Specifications / 16
Contact us / 16
This chapter contains a partial list of characteristics and specifications for the
Keysight InfiniiVision 2000/3000 X-Series oscilloscopes.
For a full list of Keysight InfiniiVision 2000/3000 X-Series oscilloscopes
characteristics and specifications see the data sheets.
The data sheets are available at www.keysight.com/find/2000X-Series or
www.keysight.com/find/3000X-Series.
Power Requirements
Line voltage, frequency, and power:
• ~Line 100-120 Vac, 50/60/400 Hz
• 100-240 Vac, 50/60 Hz
• 100 W max
13
1 Characteristics and Specifications
Measurement Category
Measurement Category
The InfiniiVision 2000/3000 X-Series oscilloscopes are not intended to be used for
measurements in Measurement Category II, III, or IV.
Use this instrument only for measurements within its specified measurement category
WARNING
(not rated for CAT II, III, IV). No transient overvol tages allowed.
Do not exceed 5 Vrms in 50 Ω mode (3000 X-Series oscilloscopes only). Input protection
CAUTION
is enabled in 50 Ω mode, and the 50 Ω load will disconnect if greater than 5 Vrms is
detected. However, the input could still be damaged, depending on the time constant of
the signal. The 50 Ω input protection mode only functions when the oscilloscope is
powered on.
Environmental Conditions
Pollution Degree Pollution Degree 1: No pollution or only dry, non-conductive pollution occurs.
Definitions The pollution has no influence. Example: A clean room or climate controlled
office environment.
Pollution Degree 2. Normally only dry non-conductive pollution occurs.
Occasionally a temporary conductivity caused by condensation may occur.
Example: General indoor environment.
Pollution Degree 3: Conductive pollution occurs, or dry, non-conductive
pollution occurs which becomes conductive due to condensation which is
expected. Example: Sheltered outdoor environment.
Specifications
Please see the InfiniiVision 2000/3000 X-Series Oscilloscopes Data Sheet for
complete, up-to-date specifications and characteristics.
To download a copy of the data sheet please visit:
www.keysight.com/find/2000X-Series or www.keysight.com/find/3000X-Series.
Contact us
To contact Keysight, see: www.keysight.com/find/contactus
2 Testing Performance
Overview / 18
List of Test Equipment / 19
To construct the test connector (for use with MSO models only) / 21
To test digital channels (MSO models only) / 23
To verify digital channel threshold accuracy (MSO models only) / 24
To verify DC vertical gain accuracy / 28
To verify dual cursor accuracy / 35
To verify band width (-3 dB) / 40
To verify time base accuracy / 45
To verify trigger sensitivity / 47
Keysight 2000 X-Series Oscilloscopes Performance Test Record / 53
Keysight 3000 X-Series Oscilloscopes Performance Test Record / 55
This chapter explains how to verify correct oscilloscope operation and perform
tests to ensure that the oscilloscope meets the performance specifications.
17
2 Testing Performance
Overview
To completely test and troubleshoot MSO models, create and use the test
connector accessory as described in this chapter.
• The test connector is only required for oscilloscopes that have the MSO option
licensed (enabled).
• The connector is used in the digital channel threshold accuracy test.
• The test connector keeps electrical distortion to a minimum and makes it easy
for you to connect the oscilloscope probes to function generators and
measurement equipment.
Conventions
The following conventions will be used when referring to oscilloscope models
throughout this chapter.
Table 2 Conventions
To construct the test connector (for use with MSO models only)
Keysight 2000/3000 X-Series oscilloscopes that have digital channels enabled
require the test connector described below. Follow the steps to build the test
connector.
Berg Strip, 8-by-2 3M .100” x .100” Pin Strip 1 strip, cut to length (8x2)
Header or similar
Jumper wire
1 Obtain a BNC connector and an 8-by-2 section of Berg strip. A longer strip can
be cut to length using wire cutters.
2 On one side of the Berg strip, solder a jumper wire to all of the pins (shown in
Figure 1 on page 22).
3 On the other side of the Berg strip, solder another jumper wire to all of the pins.
4 Solder the center of the BNC connector to a center pin on one of the rows on
the Berg strip.
5 Solder the ground tab of the BNC connector to a center pin on the other row on
the Berg strip.
Jumper (2)
Ground Lead
(from scope’s MSO cable)
Signal Lead
(from scope’s MSO cable)
8 x 2 Berg Strip
When to Test
You should perform this test every 12 months or after 2000 hours of operation,
whichever comes first.
What to Test
Use these instructions to test the threshold settings of digital channels D7-D0.
Then, use the same instructions to test digital channels D15-D8 (on
3000 X-Series).
BNC Tee BNC Tee (m) (f) (f) Keysight 1250-0781 or Pomona 3285
1 Turn on the test equipment and the oscilloscope. Let them warm up for 30
minutes before starting the test.
2 Set up the precision source.
a Set the precision source to provide a DC offset voltage at the Channel 1
output.
Note: Set the Low Force terminal of the Precision Source to its "Floating"
state to prevent offset error caused by ground loop current from the
Precision Source ground to the DUT ground.
b Use the multimeter to monitor the precision source DC output voltage.
3 Use the 8-by-2 test connector and the BNC cable assembly to connect digital
channels D0-D7 to one side of the BNC Tee. Then connect the D0-D7 ground
lead to the ground side of the 8-by-2 connector. See Figure 2.
Precision Source
Digital
Multimeter
BNC-Bananna Channels
Cable Test Channels 8 - 15
Connector 0-7
4 Use a BNC-banana cable to connect the multimeter to the other side of the
BNC Tee.
5 Connect the BNC Tee to the Channel 1 output of the precision source as shown
in Figure 2.
6 On the oscilloscope, press the [Digital] key, then press the Threshold s softkey,
then press the D7 - D0 softkey repeatedly until the check mark is next to User.
7 Press the User softkey to the right of the D7 - D0 softkey, then turn the Entry
knob ( ) on the front panel of the oscilloscope to set the threshold test
settings as shown in Table 5.
Threshold vol tage setting (in DC offset vol tage setting (on Limits
oscilloscope User softkey) precision source)
8 Do the following steps for each of the threshold voltage levels shown in Table 5.
a Set the threshold voltage shown in the User softkey using the Entry knob on
the oscilloscope.
b Enter the corresponding DC offset voltage on the precision source front
panel. Then use the multimeter to verify the voltage.
Digital channel activity indicators are displayed on the status line at the top
of the oscilloscope display. The activity indicators for D7-D0 should show all
of the channels at digital high levels.
c Use the knob on the precision source to decrease the offset voltage, in
increments of 10 mV, until the activity indicators for digital channels D7-D0
are all at digital low levels. Record the precision source voltage in the
Performance Test Record (see page 53).
d Use the knob on the precision source to increase the offset voltage, in
increments of 10 mV, until the activity indicators for digital channels D7-D0
are all at digital high levels. Record the precision source voltage in the
Performance Test Record (see page 53).
Before proceeding to the next step, make sure that you have recorded the
precision source voltage levels for each of the threshold settings shown in
Table 5.
9 When testing 3000 X-Series MSOs, use the 8-by-2 test connector to connect
digital channels D15-D8 to the output of the precision source. Then connect
the D15-D8 ground lead to the ground side of the 8-by-2 connector.
10 Repeat this procedure (steps 6 through 8) for digital channels D15-D8 to verify
threshold accuracy and record the threshold levels in the Performance Test
Record (see page 53). Be sure to set the thresholds with the User softkey for the
appropriate set of channels.
2000 X-Series ±3% of full scale (>= 10 mV/div); • Full scale is defined as 32 mV on the 2 mV/div range
±4% of full scale (< 10 mV/div) and the 1 mV/div range.
• Full scale on all other ranges is defined as 8 divisions
3000 X-Series ±2.0% of full scale times the V/div setting.
BNC Tee BNC tee (m) (f) (f) Keysight 1250-0781 or Pomona 3285
Blocking capacitor Note: if a BNC blocking capacitor is not available use Keysight 11742A +
an SMA blocking capacitor. Pomona 4289 +
Pomona 5088
1 Press [Save/Recall] > Defaul t/Erase > Factory Defaul t to recall the factory default
setup.
2 If you are testing a 2000 X-Series oscilloscope, set the probe attenuation to 1:1
on the analog channel you are testing (for example, [1] > Probe > Probe; then,
turn the Entry knob to select 1.00 : 1).
3 Set up the oscilloscope.
a Adjust the horizontal scale to 200.0 us/d iv.
b Set the Volts/Div setting to the value in the first line in Table 8 or Table 9
(depending on the oscilloscope model).
c Adjust the channel’s vertical position knob to place the baseline (reference
level) at 0.5 major division from the bottom of the display.
Table 8 Settings Used to Verify DC Vertical Gain Accuracy, 2000 X-Series Models
2 Full scale is defined as 32 mV on the 2 mV/div and the 1 mV/div range. Full scale on all other ranges
Table 9 Settings Used to Verify DC Vertical Gain Accuracy, 3000 X-Series Models
2 Full scale is defined as 32 mV on the 2 mV/div range and the 1 mV/div range. Full scale on all other
Oscilloscope
Precision Source
7 Adjust the output so that the multimeter reading displays the first Volts/div
precision source setting value in Table 8 or Table 9 (depending on the
oscilloscope model).
8 Disconnect the multimeter.
9 Wait until the measurement settles.
10 Read the “current” average voltage value again as V2.
11 Calculate the difference V2 - V1.
The difference in average voltage readings should be within the test limits of
Table 8 or Table 9 (depending on the oscilloscope model).
If a result is not within the test limits, go to the “Troubleshooting” chapter. Then
return here.
12 Disconnect the precision source from the oscilloscope.
13 Repeat this procedure to check the DC vertical gain accuracy with the
remaining Volts/div setting values in Table 8 or Table 9 (depending on the
oscilloscope model).
14 Finally, repeat this procedure for the remaining channels to be tested.
Blocking
Capacitor
BNC shorting
cap
To oscilloscope input
BNC Tee BNC tee (m) (f) (f) Keysight 1250-0781 or Pomona 3285
Blocking capacitor Note: if a BNC blocking capacitor is not available use Keysight 11742A +
an SMA blocking capacitor. Pomona 4289 +
Pomona 5088
1 Press [Save/Recall] > Defaul t/Erase > Factory Defaul t to recall the factory default
setup.
2 If you are testing a 2000 X-Series oscilloscope, set the probe attenuation to 1:1
on the analog channel you are testing (for example, [1] > Probe > Probe; then,
turn the Entry knob to select 1.00 : 1).
3 Set up the oscilloscope.
a Set the Volts/Div setting to the value in the first line in Table 11 or Table 12
(depending on the oscilloscope model).
b Adjust the channel 1 position knob to place the baseline at 0.5 major division
from the bottom of the display.
Table 11 Settings Used to Verify Dual Cursor Accuracy, 2000 X-Series Models
2 Full scale is defined as 32 mV on the 2 mV/div range and the 1 mV/div range. Full scale on all other
Table 12 Settings Used to Verify Dual Cursor Accuracy, 3000 X-Series Models
10 mV/Div 70 mV 68 mV to 72 mV
5 mV/Div1 35 mV 34 mV to 36 mV
2 Full scale is defined as 32 mV on the 2 mV/div range and the 1 mV/div range. Full scale on all other
Note: Set the Low Force terminal of the Precision Source to its "Floating" state
to prevent offset error caused by ground loop current from the Precision Source
ground to the DUT ground.
Oscilloscope
Precision Source
6 Adjust the output so that the multimeter reading displays the first Volts/div
precision source setting value in Table 11 or Table 12 (depending on the
oscilloscope model).
7 Disconnect the multimeter.
Blocking
Capacitor
BNC shorting
cap
To oscilloscope input
50 Ohm Feedthrough 50Ω BNC (f) to BNC (m), when testing 2000 X-Series Keysight 0960-0301
Termination oscilloscopes
Oscilloscope
Signal
Generator
N to BNC Adapter
Power Splitter
Power
Meter
Figure 7 Setting Up Equipment for Band width (-3 dB) Verification Test
For example, if the power meter reading is 892 uW, then Vin1MHz = (892*10-6 *
50Ω)1/2 = 211.2 mVrms.
response(dB) = 20 log10
Vout max freq / Vin max freq
Vout
1 M Hz / Vin 1 MHz
Example If:
Pmeas1_MHz = 892 uW
Std Dev(n) 1MHz = 210.4 mV
Pmeas max_freq = 687 uW
Std Dev(n) max freq = 161.6 mV
Then after converting the values from the power meter to Vrms:
Signal Generator 100 kHz - 1 GHz, 0.01 Hz frequency resolution, Keysight N5171B
jitter: < 2ps
50 Ohm Feedthrough 50Ω BNC (f) to BNC (m), when testing 2000 X-Series Keysight 0960-0301
Termination oscilloscopes
Signal Generator 25 MHz, 100 MHz, 350 MHz, 500 MHz, and 1 GHz sine Keysight N5171B
waves
Oscilloscope
Signal
Generator
N to BNC Adapter
N Cable
Oscilloscope
Signal
Generator
50 Ohm Feedthrough
N to BNC Adapter
Power Splitter
Power
Meter
6 Press the [Trigger] key, then press the Source softkey to set the trigger source to
External.
7 Check for stable triggering and adjust the trigger level if necessary. Triggering
is indicated by the Trig’d indicator at the top of the display. When it is flashing,
the oscilloscope is not triggered. When it is not flashing, the oscilloscope is
triggered.
8 Record the results as Pass or Fail in the Performance Test Record (see
page 53).
If the test fails, see the “Troubleshooting” chapter. Then return here.
Band wid th (-3 dB) Model Test Limits Channel 1 Channel 2 Channel 3* Channel 4*
202x -3 dB at 200 MHz ________ ________ ________ ________
201x -3 dB at 100 MHz ________ ________ ________ ________
200x -3 dB at 70 MHz ________ ________ ________ ________
Time Base Accuracy Limit: ±25 ppm ±5 ppm per year _________ ________ ________
(aging)
Internal Trigger Sensitivity
Generator Setting Test Limits Channel 1 Channel 2 Channel 3* Channel 4*
200 MHz models: 200 MHz < 10 mV/div: greater of 1 div ________ ________ ________ _______
100 MHz models: 100 MHz or 5 mVpp
70 MHz models: 70 MHz >= 10 mV/div: 0.6 div ________ ________ ________ _______
* Where applicable
Band wid th (-3 dB) Model Test Limits Channel 1 Channel 2 Channel 3* Channel 4*
310x -3 dB at 1 GHz ________ ________ ________ ________
305x -3 dB at 500 MHz ________ ________ ________ ________
303x -3 dB at 350 MHz ________ ________ ________ ________
302x -3 dB at 200 MHz ________ ________ ________ ________
301x -3 dB at 100 MHz ________ ________ ________ ________
* Where applicable
This chapter explains how to adjust the oscilloscope for optimum operating
performance.
57
3 Calibrating and Adjusting
User Calibration
Perform user-calibration:
• Every two years or after 4000 hours of operation.
• If the ambient temperature is >10° C from the calibration temperature.
• If you want to maximize the measurement accuracy.
The amount of use, environmental conditions, and experience with other
instruments help determine if you need shorter User Cal intervals.
User Cal performs an internal self-alignment routine to optimize the signal path in
the oscilloscope. The routine uses internally generated signals to optimize circuits
that affect channel sensitivity, offset, and trigger parameters. Disconnect all
inputs and allow the oscilloscope to warm up before performing this procedure.
Performing User Cal will invalidate your Certificate of Calibration. If NIST (National
Institute of Standards and Technology) traceability is required perform the
procedures in Chapter 2 in this book using traceable sources.
Use 50Ω RG58AU or equivalent BNC cables when performing User Cal.
a For a 2-channel oscilloscope, connect a BNC tee to the equal length cables.
Then connect a BNC(f)-to-BNC(f) (also called a barrel connector) to the tee
as shown below.
Longer cable
To Channel 1 to TRIG OUT
To Channel 2
To Channel 1
To Channel 2
To Channel 3
Longer cable
To Channel 4 to TRIG OUT
4 Connect a BNC cable (40 inches maximum) from the TRIG OUT connector on
the rear panel to the BNC barrel connector.
5 Press the [Utility] key; then, press the Service softkey.
6 Begin the Self Cal by pressing the Start User Cal softkey.
4 Troubleshooting
Solving General Problems with the Oscilloscope / 64
Verifying Basic Operation / 66
This chapter begins with “Solving General Problems with the Oscilloscope. It tells
you what to do in these cases:
• If there is no display.
• If there is no trace display.
• If the trace display is unusual or unexpected.
• If you cannot see a channel.
Next, this chapter describes procedures for “Verifying Basic Operation of the
oscilloscope:
• To power-on the oscilloscope.
• To perform hardware self test.
• To perform front panel self test.
• To verify default setup.
• To perform an Auto Scale on the Probe Comp signal.
• To compensate passive probes.
The service policy for all 2000/3000 X-Series oscilloscopes is now unit
replacement, so there are no longer internal assembly troubleshooting
instructions in this service guide.
63
4 Troubleshooting
If there is no display
✔ Check that the power cord is firmly seated in the oscilloscope power
receptacle.
✔ Check that the power source is live.
✔ Check that the front-panel power switch is on.
✔ If there is still no display, go to the troubleshooting procedures in this chapter.
✔ Check that all oscilloscope probes are connected to the correct signals in the
circuit under test.
✔ Ensure that the probe’s ground lead is securely connected to a ground point in
the circuit under test. For high-speed measurements, each probe’s individual
ground lead should also be connected to a ground point closest to the signal
point in the circuit under test.
✔ Check that the trigger setup is correct.
✔ A correct trigger setup is the most important factor in helping you capture the
data you desire. See the User’s Guide for information about triggering.
✔ Check that persistence in the Display menu is turned off, then press the Clear
Display softkey.
✔ Press the [Auto Scale] key.
AVOID INJURY.
WARNING Always operate the oscilloscope with an approved three conductor power cable. Do not negate the
protective action of the three conductor power cable.
Successfully passing Hardware Self Test does not guarantee 100% of the
oscilloscope's functionality. Hardware Self Test is designed to provide an 80%
confidence level that the oscilloscope is operating properly.
• 0 V level.
• channel 1 source.
• dc coupling.
• rising edge slope.
• 40 ns holdoff time.
• Display:
• 20% grid intensity.
• persistence off.
• Other:
• Acquire mode normal.
• Run/Stop to Run.
• cursor measurements off.
2 Connect an oscilloscope probe from channel 1 to the Probe Comp signal terminal
on the front panel.
3 Connect the probe’s ground lead to the ground terminal that is next to the Demo
2 (Probe Comp) terminal.
4 Press [AutoScale].
5 You should see a waveform on the oscilloscope’s display similar to this:
If you see the waveform, but the square wave is not shaped correctly as shown
above, perform the procedure “To compensate passive probes" on page 69.
If you do not see the waveform, ensure your power source is adequate, the
oscilloscope is properly powered-on, and the probe is connected securely to
the front-panel analog channel input BNC and to the Demo 2 (Probe Comp)
terminal.
6 If you still do not see the waveform, use the troubleshooting flowchart in this
chapter to isolate the problem.
1 Perform the procedure “To perform an Auto Scale on the Probe Comp
signal" on page 68
2 Press the channel key to which the probe is connected ([1], [2], etc.).
3 In the Channel Menu, press Probe.
4 In the Channel Probe Menu, press Probe Check; then, follow the instructions
on-screen.
If necessary, use a nonmetallic tool (supplied with the probe) to adjust the
trimmer capacitor on the probe for the flattest pulse possible.
On the N2862/63/90 probes, the trimmer capacitor is the yellow adjustment on
the probe tip. On other probes, the trimmer capacitor is located on the probe
BNC connector.
Perfectly compensated
Over compensated
Under compensated
comp.cdr
5 Replacing Assemblies
The service policy for all 2000/3000 X-Series oscilloscopes is now unit
replacement, so there are no longer instructions for replacing internal assemblies
in this service guide.
71
5 Replacing Assemblies
6 Replaceable Parts
This chapter describes how to order replaceable assemblies and parts for the
Keysight 2000/3000 X-Series oscilloscopes.
Diagrams and parts lists are included for assemblies and hardware that you can
order.
Before working on the oscilloscope, read the safety summary at the back of this
book.
73
6 Replaceable Parts
Listed Parts
To order a part in the parts list, quote the Keysight Technologies part number,
indicate the quantity desired, and address the order to the nearest Keysight
Technologies Sales Office. To find your nearest sales office go to www.keysight.com.
Unlisted Parts
To order a part not listed in the parts list, include the instrument part number,
instrument serial number, a description of the part (including its function), and the
number of parts required. Address the order to the nearest Keysight Technologies
Sales Office.
Exchange Assemblies
Some parts used in this instrument have been set up for an exchange program.
This program allows the customer to exchange a faulty assembly with one that
has been repaired, calibrated, and performance-verified by the factory. The cost is
significantly less than that of a new part. The exchange parts have a part number
in the form XXXXX-695XX.
After receiving the repaired exchange part from Keysight Technologies, a United
States customer has 30 days to return the faulty assembly. For orders not
originating in the United States, contact the local Keysight Technologies service
organization. If the faulty assembly is not returned within 30 days, the customer
will be charged an additional amount. The additional amount will be the difference
in price between a new assembly and that of an exchange assembly.
Exploded Views
The following exploded views provide a graphical representation of the
oscilloscope at the time this manual was released. Not all parts are shown. Your
parts may be slightly different than those shown. These views provide reference
designator numbers that map to those used in the parts list table in this chapter.
MP10
MP1
MP6,
MP33
MP2 MP35
W6 Power cord 0-1 Part number varies by country. Contact your local Keysight sales office for
replacement.
*Optional item.
7 Safety Notices
This apparatus has been designed and tested in accordance with IEC Publication
1010, Safety Requirements for Measuring Apparatus, and has been supplied in a
safe condition. This is a Safety Class I instrument (provided with terminal for
protective earthing). Before applying power, verify that the correct safety
precautions are taken (see the following warnings). In addition, note the external
markings on the instrument that are described under “Safety Symbols.”
81
7 Safety Notices
Warnings
Before turning on the instrument, you must connect the protective earth terminal
of the instrument to the protective conductor of the (mains) power cord. The
mains plug shall only be inserted in a socket outlet provided with a protective
earth contact. You must not negate the protective action by using an extension
cord (power cable) without a protective conductor (grounding). Grounding one
conductor of a two-conductor outlet is not sufficient protection.
Only fuses with the required rated current, voltage, and specified type (normal
blow, time delay, etc.) should be used. Do not use repaired fuses or short-circuited
fuseholders. To do so could cause a shock or fire hazard.
If you energize this instrument by an auto transformer (for voltage reduction or
mains isolation), the common terminal must be connected to the earth terminal of
the power source.
Whenever it is likely that the ground protection is impaired, you must make the
instrument inoperative and secure it against any unintended operation.
Service instructions are for trained service personnel. To avoid dangerous electric
shock, do not perform any service unless qualified to do so. Do not attempt
internal service or adjustment unless another person, capable of rendering first aid
and resuscitation, is present.
Do not install substitute parts or perform any unauthorized modification to the
instrument.
Capacitors inside the instrument may retain a charge even if the instrument is
disconnected from its source of supply.
Do not operate the instrument in the presence of flammable gasses or fumes.
Operation of any electrical instrument in such an environment constitutes a
definite safety hazard.
Do not use the instrument in a manner not specified by the manufacturer.
Safety Symbols
!
Instruction manual symbol: the product is marked with this symbol when it is
necessary for you to refer to the instruction manual in order to protect against
damage to the product.
equipment, 19
record, 53, 55
threshold
accuracy, digital channel, 24
test diagram, 26
trace display
problem solving, 64
trigger
sensitivity, 47
sensitivity, external, 50
sensitivity, internal, 48
troubleshooting, 63
U
user calibration, 58
V
verify
bandwidth, 40
digital channel, 24
trigger, 47
W
warranted specifications, 16