DMM Settings
Calibrator Settings
Tolerances
As-Found
As-Left
Range
Offset
Compensated
Ohms (OCO)
Resistance External
Sense
Comp ppm of
Reading
ppm
of
Range
ppm of
Reading
ppm
of
Range
100 Ω
On
0 Ω
On
None -
11.3
-
6.8
10 MΩ Off
10 MΩ
On
None 130
10
86
2
1 MΩ
Off
1 MΩ
On
None 60
1
16
1
100 kΩ Off
100 kΩ
On
None 45
2.5
9
1
10 kΩ
On
10 kΩ
On
None 45
1.5
8
0.7
1 kΩ
On
1 kΩ
On
None 45
1.5
12
0.7
100 Ω
On
100 Ω
On
None 55.7
11.3
16
6.8
Note
Apply an offset null to the 100 kΩ measurement by subtracting the
corresponding 0 Ω measurement in the 100 kΩ range.
You have completed verifying the 4-wire resistance mode of the PXIe-4081. Select one of the
following options:
•
If you want to continue verifying other modes, go to the
Verifying 2-Wire Resistance
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 2-Wire Resistance
Complete the following steps to verify 2-wire resistance:
1.
Plug the shorting bar between the HI and LO terminals of the PXIe-4081.
2.
Wait two minutes for thermal EMF to stabilize.
3.
Reset the PXIe-4081.
4.
Verify the accuracy for each configuration in the following table:
a)
Acquire the measurement at each specified configuration.
b)
Compare to the specified tolerances.
PXIe-4081 Calibration Procedure
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© National Instruments
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