Ohms Gain Calibration (2-Wire And 4-Wire) - Keysight Technologies DAQ970A Service Manual

7 A "Calibration Step Succeeded" message indicates success; if the display
8 Repeat step 5 to step 7 for each gain calibration point.
9 Store the new gain calibration constants (see
Table 2-5

Ohms gain calibration (2-wire and 4-wire)

1 Ensure that you have read the
2 Ensure that you follow the sequence listed in the
3 This procedure will measure and adjust the input signal from the calibrator
4 Select Channel 302 and configure the function in the order shown in the table
5 Apply the input resistance per the input column in
6 Enter the calibration value per the applied input current in step 5 and press
Keysight DAQ970A/DAQ973A Service Guide
shows "Calibration Step Failed", check the input value, range, function, and
entered calibration value, and repeat the calibration step.
on page 46).
DC voltage gain calibration (~10 V)
Input
Voltage
10 V
–10 V
100 mV
–100 mV
1 V
and flatness adjustment considerations"
Sequence" on page 51.
source connected to Channel 302 (Ohms). See the connections in
signal" on page 38.
below and enable Channel Monitor on the selected channel before each test
(see "Channel monitor"
appropriate source settling.
Perform Cal Step to begin the adjustment procedure (see
values" on page 46).
Channel 302
Function
DC voltage
"Test Considerations"
on page 55.
on page 50).
Calibration Procedures
"Storing calibration constants"
Range
10 V
100 mV
1 V
on page 47 and the
"Calibration Adjustment
Table 2-6 and allow for
"Entering calibration
2
NPLC
10
"Gain
"Input test
61