Calibration Adjustment Sequence; Internal Dmm Adjustments - Keysight Technologies DAQ970A Service Manual

Calibration Adjustment Sequence

Given the sensitivity of the 6.5 digits internal DMM within the DAQ970A/
DAQ973A, it is imperative to follow the calibration sequence as stated below:
Sequence Functions
1
2
3
4
5
6
7
8
9
10
11

Internal DMM Adjustments

The DAQM901A multiplexer module will be needed to perform the following
procedures. The module must be installed in slot 300.
Keysight DAQ970A/DAQ973A Service Guide
Zero and ADC calibration
AC voltage low frequency gain and flatness calibration
AC voltage gain and flatness calibration
AC current gain and flatness calibration
AC zero calibration
Frequency accuracy calibration
DC voltage gain calibration (≤10 V)
Ohms gain calibration (4-wire and 2-wire)
DC current gain calibration
DC high voltage gain calibration (≥100 V)
Capacitance zero calibration
Calibration Procedures
Section
Zero adjustment
Gain adjustment
Gain adjustment
Gain adjustment
Zero adjustment
Gain adjustment
Gain adjustment
Gain adjustment
Gain adjustment
Gain adjustment
Zero adjustment
2
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