Refer to the following table as you complete the following steps.
Complete this procedure only after successfully completing all previous verification
procedures.
Table 4. Remote Sense Voltage Output Verification
Level Range
Limit Range
and Limit
Test Point Load
1
Load
2
Voltage Remote Sense Test
Limit
Load
1
Load
2
1 mA
600 mV
0 mA
3 kΩ
3 kΩ
≤6 µV
≤6 µV
1 mA
1.
Set the
niDCPower Output Function
property or
NIDCPOWER_OUTPUT_FUNCTION
attribute to DC Current for the PXIe-4137.
2.
Set the
niDCPower Sense
property or
NIDCPOWER_ATTR_SENSE
attribute to Remote.
3.
Make the necessary connections for this procedure, as shown in the following figure:
Figure 3. Voltage Remote Sense Diagram, Part I
2
NI-DCPower Device
Sense LO
Sense HI
HI
LO
Load1
4.
Set the first specified level range, limit range, and limit on the PXIe-4137.
5.
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.
6.
Set the level on the PXIe-4137 to the first specified test point.
7.
Take a voltage measurement using the PXIe-4137.
8.
Record the voltage from the previous step as
V1
.
2
Follow industry best practices for minimizing thermal electromotive force (EMF) when making the
necessary connections for this procedure.
10
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NI PXIe-4137 Calibration Procedure
