Relay Verification; Daqm900A Solid State Relay On-Resistance Verification (Optional) - Keysight Technologies DAQ970A Service Manual

3 Performance Verification

Relay Verification

The following topics are covered in this section:
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DAQM900A solid state relay on-resistance verification (optional)

This procedure checks the relay contact resistance for relays used in Channel 01
to 20 on the DAQM900A. It uses the internal DMM of the DAQ970A/DAQ973A to
make resistance measurements. To ensure accurate measurements, the
DAQ970A/DAQ973A has to be calibrated prior to this procedure.
Ensure that you have read the
NOTE
1 Connect copper shorts from H to L for each channel, from Channel 01 to
2 Perform 2-wire resistance measurements for each channel using the
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"DAQM900A solid state relay on-resistance verification (optional)"
"DAQM901A relay contact resistance verification (optional)"
"DAQM901A shorted relay contact verification"
"DAQM902A relay contact resistance verification (optional)"
"DAQM902A shorted relay contact verification"
"DAQM903A relay contact resistance verification (optional)"
"DAQM903A shorted relay contact verification"
"DAQM904A relay contact resistance verification (optional)"
"DAQM904A shorted relay contact verification"
"DAQM905A relay verification (optional)"
"DAQM908A relay contact resistance verification (optional)"
"DAQM908A shorted relay contact verification"
Channel 20.
DAQ970A/DAQ973A's internal DMM. Ensure that all measurements are less
than
100 W.
on page 81
on page 83
on page 84
on page 88
on page 89
on page 90
"Plug-in Module Test Considerations"
Keysight DAQ970A/DAQ973A Service Guide
on page 78
on page 79
on page 82
on page 83
on page 85
on page 90
on page 76.