DMM Settings
Calibrator
Settings
As-Found Limits (V)
As-Left Limits (V)
Range
Input
Resistance
DCV
Amplitude
1
Lower
Upper
Lower
Upper
100 mV >10 GΩ / 10 MΩ 100 mV
0.09999651 0.10000349 0.09999814 0.10000186
-100 mV
-0.10000349 -0.09999651 -0.10000186 -0.09999814
1 V
>10 GΩ / 10 MΩ 1 V
0.9999795
1.0000205
0.9999915
1.0000085
-1 V
-1.0000205
-0.9999795
-1.0000085
-0.9999915
10 V
>10 GΩ / 10 MΩ 10 V
9.999875
10.000125
9.999966
10.000034
-10 V
-10.000125
-9.999875
-10.000034
-9.999966
100 V
10 MΩ
100 V
99.99715
100.00285
99.99887
100.00113
-100 V
-100.00285
-99.99715
-100.00113
-99.99887
1000 V 10 MΩ
1000 V
999.9647
1000.0353
999.9811
1000.0189
-1000 V
-1000.0353
-999.9647
-1000.0189
-999.9811
You have completed verifying the DC voltage mode of the PXIe-4081. Select one of the
following options:
•
If you want to continue verifying other modes, go to the
Verifying AC Voltage
section.
•
If you do not want to verify any additional modes, and you are performing a pre-
adjustment verification, close the session.
•
If you do not want to verify any additional modes, and you want to update the verification
time stamp, complete the following steps:
1.
Open a new calibration session to the instrument (with correct calibration password).
2.
Close the calibration session with the
Action
set to
Save
.
Verifying AC Voltage
1.
Set the calibrator to
Standby
.
2.
Connect the PXIe-4081 to the calibrator using low thermal EMF cables according to the
configuration shown in
Figure 1.
on page 6.
3.
Reset the PXIe-4081.
4.
Initialize the PXIe-4081 for AC Voltage with a range of 50 mV and resolution of
6.5 digits.
5.
Verify the accuracy for each configuration in the following table:
a)
Set the PXIe-4081 to the listed configuration and commit.
b)
Set the Calibrator to the listed configuration and allow it to settle.
c)
Acquire the specified measurement and compare the results to the limits.
1
For the ±100 mV test points, lock the calibrator range to 2.2 V.
PXIe-4081 Calibration Procedure
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© National Instruments
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7
