RM-26999 Calibration Procedure
10
ni.com/calibration
Verification Procedure
1.
Connect all test equipment except the calibrator, as shown in Figure 1.
Repeat 4 times, once for each channel.
2.
Ensure the DUT is identified by the DAQ device.
a.
Refer to the
RM-26999 Device Enumeration.vi
in the
NI Examples Finder.
3.
Ensure that the calibrator output is powered off
Caution: Possibility of Electric Shock
Power off all high-voltage signals and set the calibrator to standby before
making any connections.
4.
Connect the calibrator output to the appropriate channel on the DUT. Wait
2 minutes for thermal EMF to stabilize.
Repeat 13 times, once for each set of voltage input values.
5.
Configure the DMM to measure the appropriate low voltage input value, as
shown in Table 1.
a.
Set the DMM range.
b.
Implement PRESET before taking the measurement.
c.
Set NPLC to 100.
d.
Perform ACAL, if ACAL has not been performed within the last
24 hours or if the temperature has drifted more than
±
1
°
C from last
ACAL temperature.
e.
Enable MATH NULL.
6.
Configure the calibrator to the appropriate high voltage input value, as
shown in Table 1.
7.
Enable the calibrator to source the high voltage input value.