Input Connections
You will need the DAQM901A multiplexer module to verify or adjust the internal
DMM. The DAQM901A multiplexer module should be connected in slot 300 with
the following connections:
Short (Zero)
Zero test connections for the DAQM901A multiplexer module is best
accomplished using 4-wire copper wires with low-thermal offset measurements.
The 4-wire channels configured for the DAQM901A multiplexer module is channel
n and n+10.
– For DC voltage, 2-wire and 4-wire resistance, Channel 303 and 313 are used
– For DC current, Channel 321 is used for zero test and left OPEN.
Keysight DAQ970A/DAQ973A Service Guide
for zero test connections as illustrated below:
Calibration Procedures
2
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