Agilent Technologies 2000 X-Series Bedienungsanleitung

Agilent InfiniiVision

2000/3000 X-Series

Oscilloscopes

Service Guide

2000/3000 X-Series Oscilloscopes Service Guide

Notices

No part of this manual may be reproduced in

any form or by any means (including elec-

tronic storage and retrieval or translation

into a foreign language) without prior agree-

ment and written consent from Agilent

Technologies, Inc. as governed by United

States and international copyright laws.

Manual Part Number

75019-97084, June 2013

Print History:

75019-97012, January 2011

75019-97015, July 2011

75019-97038, October 2011

75019-97039, February 2012

75019-97084, June 2013

Available in electronic format only

Agilent Technologies, Inc.

1900 Garden of the Gods Road

Colorado Springs, CO 80907 USA

Warranty

The material contained in this docu-

ment is provided “as is,” and is sub-

ject to being changed, without notice,

in future editions. Further, to the max-

imum 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

merchantability and fitness for a par-

ticular purpose. Agilent shall not be

liable for errors or for incidental or

consequential damages in connec-

tion with the furnishing, use, or per-

formance of this document or of any

information contained herein. Should

Agilent and the user have a separate

written agreement with warranty

terms covering the material in this

document that conflict with these

terms, the warranty terms in the sep-

arate agreement shall control.

Technology Licenses

The hardware and/or software described in

this document are furnished under a license

and may be used or copied only in accor-

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Restricted Rights Legend

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1987). U.S. Government users will receive

no greater than Limited Rights as defined in

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applicable in any technical data.

Safety Notices

CAUTION

A CAUTION notice denotes a haz-

ard. It calls attention to an operat-

ing 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.

WARNING

A WARNING notice denotes a

hazard. It calls attention to an

operating procedure, practice, or

the like that, if not correctly per-

formed or adhered to, could result

in personal injury or death. Do not

proceed beyond a WARNING

notice until the indicated condi-

tions are fully understood and

met.

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.

2000/3000 X-Series Oscilloscopes Service Guide 3

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:

1 Characteristics and Specifications

This chapter contains a partial list of characteristics and

specifications for the Agilent InfiniiVision

2000/3000 X- Series oscilloscopes.

2TestingPerformance

This chapter explains how to verify correct oscilloscope

operation and perform tests to ensure that the oscilloscope

meets the performance specifications.

3 Calibrating 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.

5ReplacingAssemblies

This chapter describes how to remove assemblies from the

2000/3000 X- Series oscilloscope.

6ReplaceableParts

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.

4 2000/3000 X-Series Oscilloscopes Service Guide

7SafetyNotices

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.

2000/3000 X-Series Oscilloscopes Service Guide 5

Contents

In This Service Guide 3

Figures 9

Tables 13

1 Characteristics and Specifications 15

Power Requirements 16

Measurement Category 17

Measurement Category Definitions 17

Transient Withstand Capability 18

Environmental Conditions 19

Specifications 20

2TestingPerformance23

Overview 24

List of Test Equipment 25

Conventions 26

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 Test 30

6 2000/3000 X-Series Oscilloscopes Service Guide

Contents

What to Test 30

Verifying Test Results 30

To verify DC vertical gain accuracy 35

To verify dual cursor accuracy 42

To verify bandwidth (-3 dB) 49

To verify time base accuracy 55

To verify trigger sensitivity 57

Test Internal Trigger Sensitivity (all models) 58

Test External Trigger Sensitivity 60

Agilent 2000 X-Series Oscilloscopes Performance Test Record 63

Agilent 3000 X-Series Oscilloscopes Performance Test Record 65

3 Calibrating and Adjusting 67

User Calibration 69

To perform User Cal 69

User Cal Status 72

4Troubleshooting73

Solving General Problems with the Oscilloscope 74

If there is no display 74

If there is no trace display 75

If the trace display is unusual or unexpected 75

If you cannot see a channel 76

Verifying Basic Operation 77

To power-on the oscilloscope 77

To perform hardware self test 78

To perform front panel self test 78

To verify default setup 79

To perform an Auto Scale on the Probe Comp signal 80

To compensate passive probes 81

Contents

2000/3000 X-Series Oscilloscopes Service Guide 7

Troubleshooting Internal Assemblies 83

Equipment Required for Troubleshooting Internal

Assemblies 83

To prepare for internal assembly troubleshooting 84

Flowchart for Troubleshooting Internal Assemblies 87

System Board Drawings 88

To check the system board power supply test points 90

To check the interboard supply connector voltages 91

To check the line filter board AC output 93

To check the power switch 95

To check the power supply DC output 96

To check the display supplies 97

To check the keyboard supplies 98

To check the fan 99

5ReplacingAssemblies101

To remove the front panel knobs 104

To remove the bucket assembly 105

To remove the power supply shield 107

To remove the rear deck assembly 110

To remove the acquisition board 117

To remove the front panel assembly 122

To remove the display assembly 129

Replacing a 75019-68712 Display Assembly 131

To remove the fan assembly 134

To remove the power supply 136

To remove the line filter board 139

6ReplaceableParts145

Ordering Replaceable Parts 146

8 2000/3000 X-Series Oscilloscopes Service Guide

Contents

Listed Parts 146

Unlisted Parts 146

Direct Mail Order System 146

Exchange Assemblies 147

Exploded Views 148

Replaceable Parts List 150

7SafetyNotices157

Warnings 157

To clean the instrument 158

Safety Symbols 159

Index 161

2000/3000 X-Series Oscilloscopes Service Guide 9

Figures

Figure 1. Constructing the 8-by-2 Connector 28

Figure 2. Setting Up Equipment for Digital Channel Threshold

Accuracy Test 32

Figure 3. Setting up Equipment for DC Vertical Gain Accuracy

Test 39

Figure 4. Using a Blocking Capacitor to Reduce Noise 41

Figure 5. Setting up Equipment for Dual Cursor Accuracy Test 46

Figure 6. Using a Blocking Capacitor to Reduce Noise 48

Figure 7. Setting Up Equipment for Bandwidth (-3 dB) Verification

Test 51

Figure 8. Setting Up Equipment for Internal Trigger Sensitivity

Test 58

Figure 9. Setting Up Equipment for 4-Channel External Trigger

Sensitivity Test 61

Figure 10. User Calibration cable for 2-channel oscilloscope 70

Figure 11. User Calibration cable for 4-channel oscilloscope 71

Figure 12. Default setup screen 80

Figure 13. Example pulses 82

Figure 14. Setup for troubleshooting internal assemblies 85

Figure 15. System Board Test Points/Connectors - Top Side,

Left 88

Figure 16. System Board Test Points/Connectors - Top Side,

Right 89

Figure 17. Line filter board interboard supply connector J108 92

Figure 18. Verify line filter board AC output 94

Figure 19. Verify power switch operation 95

Figure 20. Location of the Fan Connector 100

Figure 21. Removing the front panel knobs 104

Figure 22. Removing the bucket screws 105

Figure 23. Removing bucket assembly 106

10 2000/3000 X-Series Oscilloscopes Service Guide

Figures

Figure 24. Removing the power supply shield screw 107

Figure 25. Unclipping the power supply shield right side 108

Figure 26. Removing the power supply shield - lift and pull

out 109

Figure 27. Removing the BNC nuts and washers 110

Figure 28. Removing the top rear deck screws 111

Figure 29. Removing the bottom right rear deck screw 111

Figure 30. Removing the bottom left rear deck screw 112

Figure 31. Removing the bottom rear deck screws 112

Figure 32. Removing the option module guide to acquisition board

screw 113

Figure 33. Disconnecting the interboard supply cable from the

acquisition board 114

Figure 34. Lifting front bezel latch 115

Figure 35. Separating the rear and front decks 116

Figure 36. Rear and front decks separated 116

Figure 37. Removing the T6 screws (4 channel version) 117

Figure 38. Disconnecting keyboard and display cables from

acquisition board 118

Figure 39. Disconnecting display backlight power cable from

acquisition board 119

Figure 40. Acquisition board mounting screw locations 120

Figure 41. Acquisition board removed from front deck 121

Figure 42. Release the bezel clips from the front deck 122

Figure 43. All bezel clips released 123

Figure 44. HINT: When reinstalling bezel, align ground terminal

first 123

Figure 45. Gently lift front deck from bezel 124

Figure 46. Disconnect the keyboard cable 125

Figure 47. Disconnect the softkey board cable 126

Figure 48. Unclip the softkey board from the bezel 127

Figure 49. Remove the softkey keypad from the bezel 127

Figure 50. Unclip the keyboard board from the bezel 128

Figure 51. Remove the keyboard keypad from the bezel 128

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