2.
Set the
niDCPower Output Function
property or
NIDCPOWER_OUTPUT_FUNCTION
attribute to DC Voltage for the PXIe-4137.
Verifying Voltage Measurement and Output
Compare a set of voltages measured by a DMM to the voltage test points requested by the
PXIe-4137.
Refer to the following table as you complete the following steps.
Verify ranges in the order listed in the table.
Table 2. Voltage Output and Measurement Verification
Level
Range
Limit
Range and
Limit
Test Point
As-Found
Measurement Test
Limit (% of V
Offset)
As-Left Measurement
Test Limit (% of Voltage
+ Offset)
600 mV
1 mA
-600 mV
0.017% + 30 μV
0.0040% + 11.5 μV
0 mV
600 mV
6 V
1 mA
-6 V
0.017% + 90 μV
0.0027% + 50 μV
0 V
6 V
20 V
1 mA
-20 V
0.017% + 400 μV
0.0040% + 165 μV
0 V
20 V
200 V
1 mA
-200 V
0.020% + 2.5 mV
0.0065% + 1.25 mV
0 mV
200 V
1.
Set the first specified level range, limit range, and limit on the PXIe-4137.
2.
Set the
niDCPower Sense
property or
NIDCPOWER_ATTR_SENSE
attribute to Local.
3.
Measure the internal device temperature and perform self-calibration if necessary.
a)
If the internal device temperature exceeds T
cal
±1 °C, wait up to five minutes for the
temperature to stabilize to within T
cal
±1 °C.
b)
If after five minutes the stable temperature still exceeds T
cal
±1 °C, call the self-
calibration VI or function.
4.
Set the level on the PXIe-4137 to the first specified test point.
8
|
ni.com
|
NI PXIe-4137 Calibration Procedure
