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34980A
Keysight Technologies 34980A User Manual
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5
Disassembly and Repair
116
Keysight 34980A Service Guide
Power Supply Removal
1
Remove the two T20 Torx screws securing the power supply modu
le.
2
Swing the mod
ule out and disenga
ge it
from the sheet metal at the back.
115
117
Table of Contents
Declaration of Conformity
2
Safety Information
2
Safety Considerations
3
General
3
Before Applying Power
4
Ground the Instrument
4
Do Not Operate in an Explosive Atmosphere
4
Do Not Remove the Instrument Cover
4
Do Not Modify the Instrument
4
In Case of Damage
4
Environmental Conditions
5
Safety Symbols
3
Sales and Technical Support
6
Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/EC
6
Product Category
6
Front Panel at a Glance
7
Rear Panel at a Glance
9
Rear Panel Connector Pinouts
11
External Trigger/Alarms Connector (Male D-Sub)
11
Annunciator Display Indicators
12
Analog Bus Connector (Female D-Sub)
13
Front Panel Menu Reference
14
Instrument Rack Mounting
16
Table of Contents
19
Obtaining Service
24
Operating Checklist
24
Types of Service Available
24
Repackaging for Shipment
25
Cleaning
26
Self Test Procedures
26
Electrostatic Discharge (ESD) Precautions
27
Specifications
29
Calibration Procedures
31
Keysight Technologies Calibration Services
32
Calibration Interval
32
Adjustment Is Recommended
32
Time Required for Calibration
33
Automating Calibration Procedures
33
Recommended Test Equipment
34
Calibration Security
35
Calibration Message
36
Calibration Count
36
Calibration Process
37
Aborting a Calibration in Progress
37
Performance Verification Tests
38
Internal DMM
40
Input Connections
40
DMM Test Considerations
42
Internal DMM Verification Tests
43
Optional AC Performance Verification Tests
49
Internal DMM Adjustments
50
Gain Adjustment
51
Plug-In Modules
55
Plug-In Module Test Considerations
55
34951A 4-Ch Isolated DAC Module
56
34952A Multifunction Module
61
Relay Plug-In Modules
64
Thermocouple Reference Junction 34921A (Optional)
66
Troubleshooting and Diagnostics
68
Troubleshooting Hints
68
Power Supply
69
Product Firmware Updates
69
Instrument Errors
70
Error Numbers
71
Calibration Errors
76
Isolate a Problem with a Plug-In Module
81
Relay and FET Replacement
82
34921A 40-Channel Armature Multiplexer with Low Thermal Offset
83
34922A 70-Channel Armature Multiplexer
85
34923A 40/80-Channel Reed Multiplexer
88
34924A 70-Channel Reed Multiplexer
91
34925A 40/80-Channel Optically-Isolated FET Multiplexer
94
34931A Dual 4X8 Armature Matrix
97
34932A Dual 4X16 Armature Matrix
100
34933A Dual/Quad 4X8 Reed Matrix
105
34937A 32-Channel GP Switch
109
34938A 20-Channel High-Current GP Switch
111
Disassembly and Repair
114
Electrostatic Discharge (ESD) Precautions
114
Surface Mount Repair
114
Tools Required
114
Basic Disassembly
115
Power Supply Removal
116
Power Supply Disassembly
118
KOM Removal
119
Front Panel Removal
120
Front Panel Disassembly
121
DMM Removal
122
Backplane Removal
123
Replaceable Parts
125
To Order Replaceable Parts
126
Backdating and Part Changes
126
Mainframe Replaceable Parts
127
34921A Replaceable Parts
128
34923A Replaceable Parts
129
34931A Replaceable Parts
130
34932A Replaceable Parts
131
34937A Replaceable Parts
132
34946A and 34947A Replaceable Parts
132
Vendor Addresses
133
Backdating
135
Diagrams
137
34921A Component Locator
138
34922A Component Locator
139
34923A Component Locator
140
34924A Component Locator
141
34925A Component Locator (Top)
142
34925A Component Locator (Bottom)
143
34931A Component Locator
144
34932A Component Locator
145
34933A Component Locator
146
34937A Component Locator
147
34938A Component Locator
148
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Keysight Technologies 34980A Specifications
General
Brand
Keysight Technologies
Model
34980A
Category
Measuring Instruments
Language
English
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