![background image](http://html2.mh-extra.com/html/national-instruments/ni-pxie-4080/ni-pxie-4080_calibration-procedure_3559529012.webp)
2.
Wait two minutes for thermal EMF to stabilize.
3.
Reset the PXIe-4080/4082.
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.
DMM Settings
Tolerances (ppm of range)
As-Found
As-Left
Range
OCO
100 MΩ
Off
10
10
10 MΩ
Off
10
2
1 MΩ
Off
10
2
100 kΩ
Off
10
6
10 kΩ
On
23
22
1 kΩ
On
203
202
100 Ω
On
2015
2010
5.
Remove the shorting bar from the PXIe-4080/4082.
6.
Set the calibrator to
Standby
.
7.
Connect the PXIe-4080/4082 to the calibrator using low thermal EMF cables, as shown in
on page 6.
8.
Wait two minutes for thermal EMF to stabilize.
9.
Verify the accuracy for each configuration in the following table:
a)
Acquire the measurement at each specified configuration.
b)
Compare to the specified tolerances.
DMM Settings
Calibrator Settings
Tolerances
As-Found
As-Left
Range OCO Resistance
Ext
Sense
Comp
ppm of
Reading
ppm of
Range
ppm of
Reading
ppm of
Range
1 MΩ
Off
0 Ω
Off
None -
-
-
-
100 kΩ Off
0 Ω
Off
None -
-
-
-
100 MΩ Off
100 MΩ
Off
None 3000
10
500
10
10 MΩ
Off
10 MΩ
Off
None 800
10
100
2
12
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PXIe-4080/4082 Calibration Procedure