Keysight DAQ970A Service Manual

3 Performance Verification
84 Keysight DAQ970A/DAQ973A Service Guide
DAQM903A shorted relay contact verification
This procedure uses an external DMM to make 2-wire ohms measurements across
all open terminals on the DAQM903A. As this is to verify open or shorts only,
measurement accuracy is not required, so a 2-wire ohms measurement with
handheld test probes is sufficient.
1 Install the DAQM903A module in slot 100. Close Channels 01 through 20.
Remove the module from the DAQ970A/DAQ973A.
2 Measure the resistance from the CM terminal to the NC terminal on each
channel. Ensure that they are “open” or more than 10 M.
3 Install the module in slot 100. Open Channel 01 through 20. Remove the
module from the DAQ970A/DAQ973A.
4 Measure the resistance from the CM terminal to the NO terminal on each
channel. Ensure that they are “open” or more than 10 M.
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Keysight DAQ970A Specifications

General

Scan Rate	Up to 450 channels/sec
Connectivity	USB, LAN, GPIB (optional)
Display	4.3-inch color LCD
Operating Temperature	0 °C to 50 °C
Number of slots	3 slots
Measurement Types	DCV, ACV, DCI, ACI, 2-wire resistance, 4-wire resistance, frequency, temperature, capacitance
Voltmeter	6.5 digit
Resolution	22 bits
Memory	Non-volatile memory