Figure 3. Voltage Remote Sense Diagram, HI Sense Verification Assembly
NI-DCPower Device
Sense LO
Sense HI
(triax)
HI
(triax)
LO
CHS GND
HI Sense Verification Assembly
2.
Set the
niDCPower Output Function
property or
NIDCPOWER_OUTPUT_FUNCTION
attribute to DC Current for the PXIe-4135.
3.
Set the
niDCPower Sense
property or
NIDCPOWER_ATTR_SENSE
attribute to Remote.
4.
Set the first specified level range, limit range, and limit on the PXIe-4135.
5.
Measure the internal device temperature and perform self-calibration if necessary.
a)
After measuring the internal device temperature, wait for the internal device
temperature to stabilize. Temperature is considered stable when it has not changed
by more than ±1 °C in the previous 5 minutes.
b)
After the internal temperature has stabilized, if the temperature still exceeds
T
cal
± 1 °C, call the self-calibration VI or function.
6.
Set the level on the PXIe-4135 to the first specified test point and enable the output.
7.
Take a voltage measurement using the PXIe-4135.
8.
Record the voltage from the previous step as
V1
.
9.
Repeat the previous three steps for the other test point specified in the level range. This
time, record the value as
V2
.
10. Calculate the remote sense error using the following formula, and then record the value.
Remote Sense Error
=
V
2 -
V
1
11. Verify that the recorded value falls within the test limits.
12. Configure the PXIe-4135 output to disable.
13. Repeat the previous steps. This time, make the necessary connections as shown in the
following figure:
PXIe-4135 Calibration Procedure
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© National Instruments Corporation
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