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NI PXI-4110 Calibration Procedure
Verifying Load Regulation
Complete the load regulation test to verify that the output voltage falls within specified limits
when the load current changes or to verify that the output current falls within specified limits
when the load voltage changes. Each test requires two resistors to vary the load voltage or
current.
Note
Load Voltage Verification results are dependent upon voltage and current
measurement accuracy. Any failure of the Voltage Measurement Verification or
Current Measurement Verification steps may result in a failure of the Load
Regulation Verification steps.
Connect the NI APS-4100 to the Aux Power Input connections for load regulation tests.
1, 2
20 mA
1
open
0
†
±0.000012
±0.000035
2
1,000
±5
±0.000020
±0.000043
3
1,000
±10
±0.000027
±0.000050
4
1,000
±15
±0.000035
±0.000058
5
1,000
±20
±0.000042
±0.000065
*
When verifying channel 1, the
Output
is positive. When verifying channel 2, the
Output
is negative.
†
To facilitate an accurate measurement using an
Output
value of 0, verify that the DMM and the external
load are disconnected from the NI 4110. For all other
Output
values, the DMM and the external load are
connected to the NI 4110.
Table 8.
4110 Output Parameters and Test Limits for Current Measurement
Accuracy Verification (Continued)
Channel(s)
Current
Range
Iteration
Equivalent
Resistance
(
Ω
)
Output
(V)
*
Test Limit
(A)
Published
Specification
(A)
