Keysight DAQ973A

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Performance Verification 3

Keysight DAQ970A/DAQ973A Service Guide 91

6 Measure the resistance from the Common H terminal to CH22 terminals.

Ensure that they are “open” or more than 10 MW.

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Software Revision3
Safety Considerations4
Environmental Conditions8
Regulatory Information9
Safety Symbols and Regulatory Markings10
South Korean Class a EMC Declaration11
Waste Electrical and Electronic Equipment (WEEE) Directive12
Product Category12
Sales and Technical Support12
Table of Contents13
Service and Repair18
General Information18
Types of Service Available18
Keysight Unit Exchange18
Repackaging for Shipment19
Cleaning19
Electrostatic Discharge (ESD) Precautions19
User Replaceable Parts20
Specifications and Characteristics20
Troubleshooting21
Operating Checklist21
General Troubleshooting Hints21
Self-Test Procedures23
Power-On Self-Test23
Full Self-Test24
Plug-In Module Self-Test24
Self-Test Duration25
Battery Check and Replacement26
To Verify or Replace the Battery27
Disassembly28
General Disassembly29
Internal DMM Disassembly30
Front Panel Disassembly31
Additional Chassis Disassembly32
Calibration Procedures34
Keysight Technologies Calibration Service34
Calibration Interval34
Adjustment Is Recommended34
Time Required for Calibration34
Automating Calibration Procedures35
Recommended Test Equipment36
Input Connections37
Short (Zero)37
Input Test Signal38
Calibration Security39
To Unsecure for Calibration40
To Secure against Calibration40
To Change the Security Code41
To Unsecure the Instrument Without the Security Code42
Calibration Message44
Calibration Count44
Recommended Calibration Procedure45
Aborting a Calibration in Progress45
Calibration Actions46
Entering Calibration Values46
Storing Calibration Constants46
Test Considerations47
Environmental Conditions47
Calibrator Setup48
Channel Delay49
Channel Monitor50
Calibration Adjustment Sequence51
Internal DMM Adjustments51
Zero Adjustment52
Zero and ADC Calibration52
AC Zero Calibration53
Capacitance Zero Calibration54
Gain Adjustment55
Gain and Flatness Adjustment Considerations55
Valid Gain Adjustment Input Values56
AC Voltage Low Frequency Gain and Flatness Calibration56
AC Voltage Gain and Flatness Calibration57
AC Current Gain and Flatness Calibration58
Frequency Accuracy Calibration59
DC Voltage Gain Calibration (~10 V)60
Ohms Gain Calibration (2-Wire and 4-Wire)61
DC Current Gain Calibration62
DC High Voltage Gain Calibration (¡100 V)63
Performance Verification66
Quick Performance Check66
Performance Verification Tests67
Internal DMM Verification Tests68
Zero Offset Verification68
Gain Verification70
Plug-In Module Test Considerations76
Relay Verification78
DAQM900A Solid State Relay On-Resistance Verification (Optional)78
DAQM901A Relay Contact Resistance Verification (Optional)79
DAQM901A Shorted Relay Contact Verification81
DAQM902A Relay Contact Resistance Verification (Optional)82
DAQM902A Shorted Relay Contact Verification83
DAQM903A Relay Contact Resistance Verification (Optional)83
DAQM903A Shorted Relay Contact Verification84
DAQM904A Relay Contact Resistance Verification (Optional)85
DAQM904A Shorted Relay Contact Verification88
DAQM905A Relay Verification (Optional)89
DAQM908A Relay Contact Resistance Verification (Optional)90
DAQM908A Shorted Relay Contact Verification90
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

Keysight DAQ973A - Page 91

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