3.
Initialize an external calibration session to the PXIe-4080/4082.
4.
Self-calibrate the PXIe-4080/4082.
5.
Connect the PXIe-4080/4082 to the calibrator using low thermal EMF cables according to
the configuration shown in
on page 6.
6.
Wait two minutes for thermal EMF to stabilize.
7.
Adjust the voltage gain with each configuration in the following table:
a)
Output the specified voltage from the calibrator.
b)
Call the niDMM Cal Adjust Gain VI or the
niDMM_CalAdjustGain
function
with the specified DMM settings.
Calibrator Settings
DMM Settings
Function
Range
Input Resistance
Expected Value
10 V
DC Volts
10 V
>10 GΩ
10 V
-10 V
-10 V
8.
Disconnect the cables from the PXIe-4080/4082, leaving the other end of the cable
connected to the calibrator binding posts.
9.
Plug in the shorting bar across the HI and LO terminals on the PXIe-4080/4082.
10. Wait two minutes for the thermal EMF to stabilize.
11. Call the niDMM Cal Adjust Misc VI or the
niDMM_CalAdjustMisc
function with
Type
set to
NIDMM_EXTCAL_MISCCAL_VREF_DC_VOLTAGE
.
12. Self-calibrate the PXIe-4080/4082.
13. Call the niDMM Cal Adjust Offset VI or the
niDMM_CalAdjustOffset
function
with the following parameters:
•
Function:
DC Volts
•
Range:
100 mV
•
Input Resistance:
>10 GΩ
You have completed adjusting the DC voltage mode of the PXIe-4080/4082. Proceed to one of
the following sections:
•
Adjusting Resistance
•
Adjusting AC Voltage
•
Adjusting Current
If you are not performing additional adjustments, proceed to the
Completing the Adjustment
Procedures
section to commit the calibration constants.
Adjusting Resistance
Note
You must adjust DC voltage before you adjust resistance.
PXIe-4080/4082 Calibration Procedure
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© National Instruments
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