DMM Settings
As-Found Limits
As-Left Limits
Range
Input Resistance
Lower
Upper
Lower
Upper
100 mV
>10 GΩ/10 MΩ
-4.0 µV
4.0 µV
-3.0 µV
3.0 µV
1 V
>10 GΩ/10 MΩ
-8 µV
8 µV
-4 µV
4 µV
10 V
>10 GΩ/10 MΩ
-0.06 mV
0.06 mV
-0.02 mV
0.02 mV
100 V
10 MΩ
-0.6 mV
0.6 mV
-0.2 mV
0.2 mV
300 V
10 MΩ
-6 mV
6 mV
-2 mV
2 mV
6.
Remove the shorting bar from the PXIe-4080/4082.
7.
Set the calibrator to
Standby
.
8.
Connect the PXIe-4080/4082 to the calibrator using low thermal EMF cables according to
the following figure.
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 the thermal EMF to stabilize.
10. Set the PXIe-4080/4082 and Calibrator configuration as shown 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
6
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PXIe-4080/4082 Calibration Procedure