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States and international copyright laws.
Manual Part Number
75019-97015, July 2011
Print History:
75019-97012, January 2011
Available in electronic format only
Agilent Technologies, Inc.
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A newer version of this manual
may be available at
www.agilent.com/find/
3000X-Series-manual
Microsoft ® is a U.S. registered trademark
of Microsoft Corporation.
Warranty
The material contained in this document is provided “as is,” and is subject to being changed, without notice,
in future editions. Further, to the maximum extent permitted by applicable
law, Agilent disclaims all warranties,
either express or implied, with regard
to this manual and any information
contained herein, including but not
limited to the implied warranties of
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liable for errors or for incidental or
consequential damages in connection with the furnishing, use, or performance of this document or of any
information contained herein. Should
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written agreement with warranty
terms covering the material in this
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terms, the warranty terms in the separate agreement shall control.
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no greater than Limited Rights as defined in
FAR 52.227-14 (June 1987) or DFAR
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applicable in any technical data.
Safety Notices
A CAUTION notice denotes a hazard. It calls attention to an operating procedure, practice, or the like
that, if not correctly performed or
adhered to, could result in damage
to the product or loss of important
data. Do not proceed beyond a
CAUTION notice until the indicated
conditions are fully understood and
met.
A WARNING notice denotes a
hazard. It calls attention to an
operating procedure, practice, or
the like that, if not correctly performed or adhered to, could result
in personal injury or death. Do not
proceed beyond a WARNING
notice until the indicated conditions are fully understood and
met.
2000/3000 X-Series Oscilloscopes Service Guide
In This Service Guide
This book provides the service information for the Agilent
2000/3000 X-Series oscilloscopes. This manual is divided
into these chapters:
1Characteristics and Specifications
This chapter contains a partial list of characteristics and
specifications for the Agilent InfiniiVision
2000/3000 X-Series oscilloscopes.
2Testing Performance
This chapter explains how to verify correct oscilloscope
operation and perform tests to ensure that the oscilloscope
meets the performance specifications.
3Calibrating and Adjusting
This chapter explains how to adjust the oscilloscope for
optimum operating performance.
4Troubleshooting
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.
5Replacing Assemblies
This chapter describes how to remove assemblies from the
2000/3000 X-Series oscilloscope.
6Replaceable Parts
This chapter describes how to order replaceable assemblies
and parts for the Agilent 2000/3000 X-Series oscilloscopes.
It includes diagrams and parts lists for hardware that you
can order.
2000/3000 X-Series Oscilloscopes Service Guide 3
7Safety Notices
At the front of the book you will find safety notice
descriptions and document warranties.
Digital Channels
Because all of the oscilloscopes in the Agilent 2000/3000 X-Series have analog
channels, the analog channel topics in this book apply to all instruments.
Whenever a topic discusses the digital channels, that information applies only to
Mixed-Signal Oscilloscope (MSO) models or DSO models that have been
upgraded to an MSO.
Abbreviated instructions for pressing a series of keys
Instructions for pressing a series of keys are written in an abbreviated manner.
Instructions for pressing Key1, then pressing Softkey2, then pressing Softkey3 are
abbreviated as follows:
Press [Key1] & Softkey2 & Softkey3.
The keys may be front panel keys, or softkeys, which are located directly below
the oscilloscope display.
To construct the test connector (for use with MSO models
only)27
To test digital channels (MSO models only)29
To verify digital channel threshold accuracy (MSO models
only)30
When to Test30
2000/3000 X-Series Oscilloscopes Service Guide 5
Contents
What to Test30
Verifying Test Results30
To verify DC vertical gain accuracy35
To verify dual cursor accuracy42
To verify analog bandwidth (-3 dB)49
To verify time base accuracy55
To verify trigger sensitivity57
Test Internal Trigger Sensitivity (all models)58
Test External Trigger Sensitivity60
Agilent 2000 X-Series Oscilloscopes Performance Test Record63
Agilent 3000 X-Series Oscilloscopes Performance Test Record65
3Calibrating and Adjusting67
62000/3000 X-Series Oscilloscopes Service Guide
User Calibration69
To perform User Cal69
User Cal Status72
4Troubleshooting73
Solving General Problems with the Oscilloscope74
If there is no display74
If there is no trace display75
If the trace display is unusual or unexpected75
If you cannot see a channel76
Verifying Basic Operation77
To power-on the oscilloscope77
To perform hardware self test78
To perform front panel self test78
To verify default setup79
To perform an Auto Scale on the Probe Comp signal80
To compensate passive probes81
Troubleshooting Internal Assemblies83
Equipment Required for Troubleshooting Internal
Assemblies83
To prepare for internal assembly troubleshooting84
Flowchart for Troubleshooting Internal Assemblies87
System Board Drawings88
To check the system board power supply test points90
To check the interboard supply connector voltages91
To check the line filter board AC output93
To check the power switch95
To check the power supply DC output96
To check the display supplies97
To check the keyboard supplies98
To check the fan99
5Replacing Assemblies101
Contents
To remove the front panel knobs104
To remove the bucket assembly105
To remove the power supply shield107
To remove the rear deck assembly110
To remove the acquisition board117
To remove the front panel assembly122
To remove the display assembly129
Replacing a 75019-68712 Display Assembly131
To remove the fan assembly134
To remove the power supply136
To remove the line filter board139
6Replaceable Parts145
Ordering Replaceable Parts146
2000/3000 X-Series Oscilloscopes Service Guide 7
Contents
Listed Parts146
Unlisted Parts146
Direct Mail Order System146
Exchange Assemblies147
Exploded Views148
Replaceable Parts List150
7Safety Notices157
Warnings157
To clean the instrument158
Safety Symbols159
Index161
82000/3000 X-Series Oscilloscopes Service Guide
Figures
Figure 1. Constructing the 8-by-2 Connector28
Figure 2. Setting Up Equipment for Digital Channel Threshold
Accuracy Test32
Figure 3. Setting up Equipment for DC Vertical Gain Accuracy
Te s t39
Figure 4. Using a Blocking Capacitor to Reduce Noise41
Figure 5. Setting up Equipment for Dual Cursor Accuracy Test46
Figure 6. Using a Blocking Capacitor to Reduce Noise48
Figure 7. Setting Up Equipment for Analog Bandwidth (-3 dB)
Verification Test51
Figure 8. Setting Up Equipment for Internal Trigger Sensitivity
Te s t58
Figure 9. Setting Up Equipment for 4-Channel External Trigger
Sensitivity Test61
Figure 10. User Calibration cable for 2-channel oscilloscope70
Figure 11. User Calibration cable for 4-channel oscilloscope71
Figure 12. Default setup screen80
Figure 13. Example pulses82
Figure 14. Setup for troubleshooting internal assemblies85
Figure 15. System Board Test Points - Top Side, Left89
Figure 16. System Board Test Points - Top Side, Right89
Figure 17. Line filter board interboard supply connector J10892
Figure 18. Verify line filter board AC output94
Figure 19. Verify power switch operation95
Figure 20. Location of the Fan Connector100
Figure 21. Removing the front panel knobs104
Figure 22. Removing the bucket screws105
Figure 23. Removing bucket assembly106
Figure 24. Removing the power supply shield screw107
2000/3000 X-Series Oscilloscopes Service Guide 9
Figures
Figure 25. Unclipping the power supply shield right side108
Figure 26. Removing the power supply shield - lift and pull
out109
Figure 27. Removing the BNC nuts and washers110
Figure 28. Removing the top rear deck screws111
Figure 29. Removing the bottom right rear deck screw111
Figure 30. Removing the bottom left rear deck screw112
Figure 31. Removing the bottom rear deck screws112
Figure 32. Removing the option module guide to acquisition board
screw113
Figure 33. Disconnecting the interboard supply cable from the
acquisition board114
Figure 34. Lifting front bezel latch115
Figure 35. Separating the rear and front decks116
Figure 36. Rear and front decks separated116
Figure 37. Removing the T6 screws (4 channel version)117
Figure 38. Disconnecting keyboard and display cables from
acquisition board118
Figure 39. Disconnecting display inverter cable from acquisition
board119
Figure 40. Acquisition board mounting screw locations120
Figure 41. Acquisition board removed from front deck121
Figure 42. Release the bezel clips from the front deck122
Figure 43. All bezel clips released123
Figure 44. HINT: When reinstalling bezel, align ground terminal
first123
Figure 45. Gently lift front deck from bezel124
Figure 46. Disconnect the keyboard cable125
Figure 47. Disconnect the softkey board cable126
Figure 48. Unclip the softkey board from the bezel127
Figure 49. Remove the softkey keypad from the bezel127
Figure 50. Unclip the keyboard board from the bezel128
Figure 51. Remove the keyboard keypad from the bezel128
Figure 52. Removing the display assembly129
102000/3000 X-Series Oscilloscopes Service Guide
Figures
Figure 53. Display assembly removed130
Figure 54. The 75019-68712 display assembly has a bracket under
two of the retaining screws131
Figure 55. Disassembling the 75019-68712 display assembly132
Figure 56. Separating the 75019-68712 display mounting
bracket133
Figure 57. Removing the 75019-61606 display cable133
Figure 58. Disconnecting fan power cable134
Figure 59. Removing fan assembly135
Figure 60. Disconnecting the AC cable136
Figure 61. Disconnecting the interboard supply cable from the line
filter board137
Figure 62. Disconnecting the DC cable from the line filter
board137
Figure 63. Removing the power supply138
Figure 64. Removing the option module guide139
Figure 65. Disconnecting the ground wire140
Figure 66. Removing the line filter board screws141
Figure 67. Removing the line filter board142
Figure 68. Removing the power switch extender143
Figure 69. Exploded View 1 of 2148
Figure 70. Exploded View 2 of 2149
2000/3000 X-Series Oscilloscopes Service Guide 11
Figures
122000/3000 X-Series Oscilloscopes Service Guide
Ta bl e s
Table 1. List of test equipment25
Table 2. Conventions26
Table 3. Materials required to construct the test connectors27
Table 4. Equipment Required to Test Digital Channel Threshold
Accuracy31
Table 5. Threshold Accuracy Voltage Test Settings33
Table 6. DC Vertical Gain Accuracy Test Limits35
Table 7. Equipment Required to Verify DC Vertical Gain
Accuracy36
Table 8. Settings Used to Verify DC Vertical Gain Accuracy,
2000 X-Series Models37
Table 9. Settings Used to Verify DC Vertical Gain Accuracy,
3000 X-Series Models38
Table 10. Equipment Required to Verify Dual Cursor Accuracy43
Table 11. Settings Used to Verify Dual Cursor Accuracy,
2000 X-Series Models44
Table 12. Settings Used to Verify Dual Cursor Accuracy,
3000 X-Series Models45
Table 13. Analog Bandwidth (-3 dB) Test Limits49
Table 14. Equipment Required to Verify Analog Bandwidth
(-3 dB)50
Table 15. Equipment Required to Verify Time Base Accuracy55
Table 16. Equipment Required to Verify Trigger Sensitivity57
Table 17. Equipment Required to Troubleshoot the
Oscilloscope83
Table 18. Replaceable Parts150
2000/3000 X-Series Oscilloscopes Service Guide 13
Tables
142000/3000 X-Series Oscilloscopes Service Guide
Agilent InfiniiVision 2000/3000 X-Series Oscilloscope
Service Guide
1
Characteristics and Specifications
Power Requirements 16
Measurement Category 17
Environmental Conditions 19
Specifications 20
Contact us 21
This chapter contains a partial list of characteristics and
specifications for the Agilent InfiniiVision
2000/3000 X-Series oscilloscopes.
For a full list of Agilent InfiniiVision 2000/3000 X-Series
oscilloscopes characteristics and specifications see the data
sheets.
The data sheets are available at
www.agilent.com/find/2000X-Series or
www.agilent.com/find/3000X-Series.
15
1Characteristics and Specifications
Power Requirements
Line voltage, frequency, and power:
• ~Line 100- 120 Vac, 50/60/400 Hz
• 100- 240 Vac, 50/60 Hz
• 100 W max
162000/3000 X-Series Oscilloscopes Service Guide
Measurement Category
WARNING
Measurement Category
Measurement Category Definitions
Characteristics and Specifications1
The InfiniiVision 2000/3000 X-Series oscilloscope is intended
to be used for measurements in Measurement Category I.
Use this instrument only for measurements within its specified
measurement category.
Measurement category I is for measurements performed on
circuits not directly connected to MAINS. Examples are
measurements on circuits not derived from MAINS, and
specially protected (internal) MAINS derived circuits. In the
latter case, transient stresses are variable; for that reason,
the transient withstand capability of the equipment is made
known to the user.
Measurement category II is for measurements performed on
circuits directly connected to the low voltage installation.
Examples are measurements on household appliances,
portable tools and similar equipment.
2000/3000 X-Series Oscilloscopes Service Guide 17
Measurement category III is for measurements performed in
the building installation. Examples are measurements on
distribution boards, circuit- breakers, wiring, including cables,
bus- bars, junction boxes, switches, socket-outlets in the fixed
installation, and equipment for industrial use and some
other equipment, for example, stationary motors with
permanent connection to the fixed installation.
Measurement category IV is for measurements performed at
the source of the low-voltage installation. Examples are
electricity meters and measurements on primary overcurrent
protection devices and ripple control units.
1Characteristics and Specifications
CAUTION
CAUTION
CAUTION
Transient Withstand Capability
Maximum input voltage for analog inputs
CAT I 300 Vrms, 400 Vpk; transient overvoltage 1.6 kVpk
with 10073C 10:1 probe: CAT I 500 Vpk, CAT II 400 Vpk
with N2862A/B or N2863A/B 10:1 probe: 300 Vrms
Do not exceed 5 Vrms in 50 Ω mode (3000 X-Series oscilloscopes only).
Input protection 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.
Maximum input voltage for logic channels:
182000/3000 X-Series Oscilloscopes Service Guide
±40 V peak CAT I; transient overvoltage 800 Vpk
Environmental Conditions
Characteristics and Specifications1
EnvironmentIndoor use only.
Ambient
temperature
HumidityOperating: Up to 80% RH at or below +40
AltitudeOperating and non-operating to 4,000 m (13,123 ft)
Overvoltage
Category
Pollution
Degree
Pollution
Degree
Definitions
Operating 0 °C to +55 °C; non-operating –40 °C to +71 °C
°C. Up to 45% RH up
to +50 °C.
Non-operating: Up to 95% RH up to +40
°C.
+50
This product is intended to be powered by MAINS that comply
to Overvoltage Category II, which is typical of cord-and-plug
connected equipment.
The InfiniiVision 2000/3000 X-Series oscilloscopes may be
operated in environments of Pollution Degree 2 (or Pollution
Degree 1).
Pollution Degree 1: No pollution or only dry, non-conductive
pollution occurs. 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.
°C. Up to 45% RH up to
2000/3000 X-Series Oscilloscopes Service Guide 19
1Characteristics and Specifications
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.agilent.com/find/2000X-Series or
www.agilent.com/find/3000X-Series.
Or go to the Agilent home page at www.agilent.com and
search for 2000/3000 X-Series oscilloscopes data sheet.
To order a data sheet by phone, please contact your local
Agilent office. A contact list is provided on the next page.
The most up-to-date list is available at:
www.agilent.com/find/contactus
202000/3000 X-Series Oscilloscopes Service Guide
Contact us
Americas
Canada (877) 894-4414
Latin America 305 269 7500
United States (800) 829-4444
Asia Pacific
Australia 1 800 629 485
China 800 810 0189
Hong Kong 800 938 693
India 1 800 112 929
Japan 81 426 56 7832
Korea 080 769 0800
Malaysia 1 800 888 848
Singapore 1 800 375 8100
Taiwan 0800 047 866
Thailand 1 800 226 008
Agilent InfiniiVision 2000/3000 X-Series Oscilloscope
Service Guide
2
Testing Performance
Overview 24
List of Test Equipment 25
To construct the test connector (for use with MSO models only) 27
To test digital channels (MSO models only) 29
To verify digital channel threshold accuracy (MSO models only) 30
To verify DC vertical gain accuracy 35
To verify dual cursor accuracy 42
To verify analog bandwidth (-3 dB) 49
To verify time base accuracy 55
To verify trigger sensitivity 57
Agilent 2000 X-Series Oscilloscopes Performance Test Record 63
Agilent 3000 X-Series Oscilloscopes Performance Test Record 65
This chapter explains how to verify correct oscilloscope
operation and perform tests to ensure that the oscilloscope
meets the performance specifications.
23
2Testing 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.
Let the Equipment Warm Up Before Testing
For accurate test results, let the test equipment and the
oscilloscope warm up 30 minutes before testing.
Verifying Test Results
During the tests, record the readings in the Performance
Test Record on page 63. To verify whether a test passes,
verify that the reading is within the limits in the
Performance Test Record.
If a performance test fails
If a performance test fails, first perform the User Cal procedure. Press the
following keys to access User Cal: [Utility]→Service→Start User Cal.
242000/3000 X-Series Oscilloscopes Service Guide
Testing Performance2
List of Test Equipment
Below is a list of test equipment and accessories required to
perform the performance test verification procedures.
Tabl e 1List of test equipment
Recommended Model/
EquipmentCritical Specifications
Test connector, 8-by-2*See page 27 for instructions on building test connector.n/a
Digital Multimeter0.1 mV resolution, 0.005% accuracyAgilent 34401A
Power SplitterOutputs differ by 0.15 dBAgilent 11667B
Oscilloscope CalibratorDC offset voltage of -5.5 V to 35.5 V, 0.1 V resolution
25 MHz—500 MHz sine wave, 5 ppm
Signal Generator25 MHz, 100 MHz, 350 MHz, 500 MHz, and 1 GHz
sine waves
Power Meter1 GHz
Power Sensor1 GHz
BNC banana cableBNC (m) to dual bananaPomona 2BC-BNC-36 or
AdapterBNC(f) to banana(m)Agilent 1251-2277
AdapterBNC Tee (m) (f) (f)Agilent 1250-0781† or
* Required only for testing digital channels of oscilloscopes that have the MSO option.
Most parts and equipment are available at www.agilent.com. See respective manufacturer’s websites for their equipment.
†
These parts available at www.parts.agilent.com at the time this manual was published.
±3% accuracyAgilent N1914A
±3% accuracyAgilent E9304A or
Part Number
Fluke 5820A
Agilent N5181A
N8482A
Agilent 11001-66001
†
(16-channel) or Agilent
N6459-60001
(8-channel)
Pomona 3285
†
†
2000/3000 X-Series Oscilloscopes Service Guide 25
2Testing Performance
Tabl e 1List of test equipment (continued)
Recommended Model/
EquipmentCritical Specifications
AdapterType N (m) to BNC (m)Agilent 1250-0082 or
Blocking capacitor and shorting capNote: if a BNC blocking capacitor is not available use an
SMA blocking capacitor.
Adapter (qty 3)N(m) to BNC(f)Agilent 1250-0780
50 Ohm Feedthrough Termination50Ω BNC (f) to BNC (m)Agilent 0960-0301
* Required only for testing digital channels of oscilloscopes that have the MSO option.
Most parts and equipment are available at www.agilent.com. See respective manufacturer’s websites for their equipment.
†
These parts available at www.parts.agilent.com at the time this manual was published.
Part Number
Pomona 3288 with
Pomona 3533
Agilent 11742A +
Pomona 4288 +
Pomona 5088
Conventions
The following conventions will be used when referring to
oscilloscope models throughout this chapter.
To construct the test connector (for use with MSO models only)
Agilent 2000/3000 X- Series oscilloscopes that have digital
channels enabled require the test connector described below.
Follow the steps to build the test connector.
Tabl e 3Materials required to construct the test connectors
DescriptionRecommended PartQty
BNC (f) ConnectorAgilent 1250-1032 or
Pomona 4578
Berg Strip, 8-by-23M .100” x .100” Pin
Strip 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 28).
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.
1
1 strip, cut to length (8x2)
2000/3000 X-Series Oscilloscopes Service Guide 27
2Testing Performance
Jumper (2)
Signal Lead
(from scope’s MSO cable)
8 x 2 Berg Strip
BNC Panel Mount Connector
Ground Lead
(from scope’s MSO cable)
Figure 1Constructing the 8-by-2 Connector
282000/3000 X-Series Oscilloscopes Service Guide
To test digital channels (MSO models only)
The acquisition system testing provides confidence that the
acquisition system is functioning correctly. It does not,
however, check a particular specification.
1 Disconnect all probes from the circuit under test and from
any other input source.
2 Using probe leads and grabbers, connect digital channels
D0, D1, D2, and D3 to the Probe Comp signal on the
center of the front panel.
3 Press the [AutoScale] key.
If four square waves appear, the acquisition system is
functioning correctly.
If the square waves do not appear, go to the
“Troubleshooting” chapter. Then return here to finish
testing the digital channels.
4 Disconnect the digital channels from the calibration point.
5 Use steps 2 and 3 to test the following sets of digital
channels. After you test one set of digital channels,
remove them before connecting the next set.
• D4, D5, D6, D7
• D8, D9, D10, D11 (on 3000 X-Series models)
• D12, D13, D14, D15 (on 3000 X- Series models)
Testing Performance2
2000/3000 X-Series Oscilloscopes Service Guide 29
2Testing Performance
To verify digital channel threshold accuracy (MSO models only)
This test verifies the digital channel threshold accuracy
specification of the Agilent 2000/3000 X- Series oscilloscopes.
Threshold accuracy test limits: ±(100 mV + 3% of threshold
setting)
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).
Verifying Test Results
After each threshold test, record the voltage reading in the
Performance Test Record on page 63. To verify whether a
test passes, verify that the voltage reading is within the
limits in the Performance Test Record.
302000/3000 X-Series Oscilloscopes Service Guide
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