Table 3. Remote Sense Voltage Offset Verification
Level Range
Limit Range
and Limit
Test Point
As-Found
Measurement Test
Limit
As-Left Measurement
Test Limit
600 mV
1 mA
0 V
±30 μV
±11.5 μV
6 V
±90 μV
±50 μV
20 V
±400 μV
±165 μV
200 V
±2.5 mV
±1.25 mV
1.
Set the first specified level range, limit range, and limit on the PXIe-4135.
2.
Set the
niDCPower Sense
property or
NIDCPOWER_ATTR_SENSE
attribute to Remote.
3.
Set the level on the PXIe-4135 to the first specified test point.
4.
Compare a DMM voltage measurement to the voltage measurement test limits.
a)
Take a voltage measurement using the DMM.
b)
Verify the DMM measurement falls within the test limits.
5.
If more than one test point per level range is specified, repeat the previous steps for each
test point, from setting the level to the test point on the PXIe-4135 up to this step.
6.
If more than one level range is specified, repeat the previous steps using the values
specified in each level range.
Verifying Voltage Remote Sense
Use the PXIe-4135 in constant current mode with a test circuit to simulate the voltage drop
between the device and a load.
Complete this procedure only after successfully completing all previous verification
procedures. Verify level ranges in the specified order.
Refer to the following table as you complete the following steps:
Table 4. Voltage Remote Sense Output Verification
Level Range
Limit Range and Limit
Test Point
Voltage Remote Sense Test Limit
1 mA
600 mV
0 mA
±6 µV
1 mA
1.
Make the necessary connections for this procedure, as shown in the following figure:
10
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ni.com
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PXIe-4135 Calibration Procedure
