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DAQ970A
Keysight Technologies DAQ970A Service Guide
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© Keysight T
echnologies 2019
Edition 2, September 1, 2019
Printed in Malaysia
*DAQ97-90001*
DA
Q97-90001
www
.keysight.com
98
Table of Contents
Default Chapter
3
Software Revision
3
Safety Considerations
4
Environmental Conditions
8
Regulatory Information
9
Safety Symbols and Regulatory Markings
10
South Korean Class a EMC Declaration
11
Waste Electrical and Electronic Equipment (WEEE) Directive
12
Product Category
12
Sales and Technical Support
12
Table of Contents
13
1 Service and Repair
18
General Information
18
Types of Service Available
18
Keysight Unit Exchange
18
Repackaging for Shipment
19
Cleaning
19
Electrostatic Discharge (ESD) Precautions
19
User Replaceable Parts
20
Specifications and Characteristics
20
Troubleshooting
21
Operating Checklist
21
General Troubleshooting Hints
21
Self-Test Procedures
23
Power-On Self-Test
23
Full Self-Test
24
Plug-In Module Self-Test
24
Self-Test Duration
25
Battery Check and Replacement
26
To Verify or Replace the Battery
27
Disassembly
28
General Disassembly
29
Internal DMM Disassembly
30
Front Panel Disassembly
31
Additional Chassis Disassembly
32
2 Calibration Procedures
34
Keysight Technologies Calibration Service
34
Calibration Interval
34
Adjustment Is Recommended
34
Time Required for Calibration
34
Automating Calibration Procedures
35
Recommended Test Equipment
36
Input Connections
37
Short (Zero)
37
Input Test Signal
38
Calibration Security
39
To Unsecure for Calibration
40
To Secure against Calibration
40
To Change the Security Code
41
To Unsecure the Instrument Without the Security Code
42
Calibration Message
44
Calibration Count
44
Recommended Calibration Procedure
45
Aborting a Calibration in Progress
45
Calibration Actions
46
Entering Calibration Values
46
Storing Calibration Constants
46
Test Considerations
47
Environmental Conditions
47
Calibrator Setup
48
Channel Delay
49
Channel Monitor
50
Calibration Adjustment Sequence
51
Internal DMM Adjustments
51
Zero Adjustment
52
Zero and ADC Calibration
52
AC Zero Calibration
53
Capacitance Zero Calibration
54
Gain Adjustment
55
Gain and Flatness Adjustment Considerations
55
Valid Gain Adjustment Input Values
56
AC Voltage Low Frequency Gain and Flatness Calibration
56
AC Voltage Gain and Flatness Calibration
57
AC Current Gain and Flatness Calibration
58
Frequency Accuracy Calibration
59
DC Voltage Gain Calibration (~10 V)
60
Ohms Gain Calibration (2-Wire and 4-Wire)
61
DC Current Gain Calibration
62
DC High Voltage Gain Calibration (¡100 V)
63
3 Performance Verification
65
3 Performance Verification
66
Quick Performance Check
66
Performance Verification Tests
67
Internal DMM Verification Tests
68
Zero Offset Verification
68
Gain Verification
70
Plug-In Module Test Considerations
76
Relay Verification
78
DAQM900A Solid State Relay On-Resistance Verification (Optional)
78
DAQM901A Relay Contact Resistance Verification (Optional)
79
DAQM901A Shorted Relay Contact Verification
81
DAQM902A Relay Contact Resistance Verification (Optional)
82
DAQM902A Shorted Relay Contact Verification
83
DAQM903A Relay Contact Resistance Verification (Optional)
83
DAQM903A Shorted Relay Contact Verification
84
DAQM904A Relay Contact Resistance Verification (Optional)
85
DAQM904A Shorted Relay Contact Verification
88
DAQM905A Relay Verification (Optional)
89
DAQM908A Relay Contact Resistance Verification (Optional)
90
DAQM908A Shorted Relay Contact Verification
90
DAQM907A Analog Output Verification (Optional)
92
DAQM907A Analog Sense Inputs Verification (Optional)
93
Thermocouple Reference Junction Verification (Optional)
94
DAQM909A DC/AC Coupling Verification (Optional)
95
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Keysight Technologies DAQ970A Specifications
General
Brand
Keysight Technologies
Model
DAQ970A
Category
Multiplexer
Language
English
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