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NI PXI-4110 Calibration Procedure
Verification
The following performance verification procedures describe the sequence of operation and test
limits required to check the NI 4110, and assumes that adequate traceable uncertainties are
available for the calibration references.
Verification consists of generating and measuring a series of outputs using the NI 4110,
verifying the accuracy with the DMM, and comparing the results to the calibration test limits. If
the results fall within the test limits, the NI 4110 meets its published specifications, and
adjustment is optional. If the results fall outside of the test limits, you must adjust the NI 4110.
Verification tests the following NI 4110 specifications:
•
Voltage programming accuracy
•
Voltage measurement accuracy
•
Current programming accuracy
•
Current measurement accuracy
•
Voltage load regulation
•
Current load regulation
•
Voltage line regulation
•
Current line regulation
Verification of the NI 4110 is complete only after you successfully complete all tests in this
section.
Note
If verification fails post-adjustment, confirm that you meet the required
before you return the NI 4110 to NI
for repair.
Table 4.
Calibration Equipment Configuration for Current Output and Measurement
Verification/Adjustment
NI 4110 Channel(s)
DMM
*
Function
Range
Input Impedance
†
0
DC Current
1 A
10 M
Ω
1, 2 (20 mA range)
0.1 A
1, 2 (1 A range)
1 A
* Use the highest resolution available on the DMM.
†
Assumes an NI 4071 DMM. For all other DMMs, use the range and input impedance closest to the
values listed in this table.
