Gain Verification - Keysight Technologies DAQ970A Service Manual

3 Performance Verification

Gain Verification

This procedure is used to check the "full scale" reading accuracy of the internal
DMM. Verification checks are performed only for those functions and ranges with
unique gain calibration constants. Measurements are checked for each function
and range as described in the procedure below:
DC voltage, ohms, and DC current gain verification
1 Ensure that you have read the
2 This procedure will measure the input signal from the Fluke calibrator source
3 Configure each function and range to the respective channel in the order
4 Apply the input values and allow for appropriate source settling and compare
5 Repeat step 4 for each gain verification item.
70
connected to Channel 302 (DC voltage, 2-wire ohms), 312 (4-wire ohms), and
321 (DC current). See the connections in
shown in following tables. Enable Channel Monitor on the selected channel
before each test (see
the measurement results to the appropriate test limits.
"Test Considerations"
"Input test signal"
"Channel monitor" on page 50).
Keysight DAQ970A/DAQ973A Service Guide
on page 47.
on page 38.