Verifying Voltage Remote Sense Accuracy
Use the NI 4113 in constant voltage 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.
Refer to the following table as you complete the following steps.
Table 8.
Voltage Remote Sense Output Verification
Level
Range
Limit
Range and
Limit
Test
Point
Load
1
Load
2
Load
3
Voltage
Remote
Sense Test
Limit
Minimum
Lead Drop
10 V
6 A
10 V
50 Ω
1 kΩ
50 Ω
0.1% +
15 mV
≥0.4 V
1.
Set the first specified level range, limit range, and limit on the NI 4113.
2.
Set the level on the NI 4113 to the first specified test point.
3.
Measure the LO lead drop with
DMM1
from the negative terminal of the device to the
negative side of
Load2
. Record the measurement as
Lead Drop
.
4.
Verify the
Lead Drop
measurement is greater than or equal to the minimum lead drop.
5.
Measure the load voltage with
DMM2
across
Load2
where the sense leads connect.
Record the measurement as
Load Voltage
.
6.
Verify the
Load Voltage
measurement falls within the voltage remote sense test limits.
7.
If more than one level range is specified, repeat the previous steps using the values
specified in each level range.
Adjustment
This section describes the steps needed to adjust the NI 4113 to meet published specifications.
Adjusted Specifications
Adjustment corrects the following specifications for the device:
•
Voltage programming accuracy
•
Current programming accuracy
•
Voltage measurement accuracy
•
Current measurement accuracy
NI PXIe-4113 Calibration Procedure
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© National Instruments
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