Figure 1. Voltage Connection Configuration
OUTPUT
A
SENSE
AUX
CURRENT
V-GUARD
GROUND
NI DMM
Calibrator
HI
LO
Not Connected
HI
LO
V-GUARD
9.
Wait two minutes for thermal EMF to stabilize.
10. Set the PXIe-4081 and Calibrator configuration as shown in the following table.
11. Acquire the specified measurements and record them for use as the offset nulls in the
following steps.
DMM Settings
Calibrator Settings
Range
Input Resistance
Range
DCV Amplitude
100 mV
>10 GΩ
2.2 V
0 V
100 mV
10 MΩ
2.2 V
0 V
12. Verify the accuracy for each configuration in the following table:
a)
Set the PXIe-4081 to the specified configuration and commit.
b)
Set the calibrator to the listed configuration and allow it to settle.
c)
Acquire the specified measurement.
d)
Subtract the appropriate offset null you recorded previously and compare the result
to the limits.
e)
Repeat for each listed Input Resistance.
f)
Set the Calibrator to
Standby
.
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PXIe-4081 Calibration Procedure
