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NI PXI-4110 Calibration Procedure
Verifying Voltage Measurement Accuracy
To verify the voltage measurement accuracy of the NI 4110, compare a set of voltage
measurements from the NI 4110 to measurements of the actual voltage at the output by a DMM.
Refer to Figure 1 for the necessary connections. When taking measurements with the NI 4110,
set the Samples to Average property to
300
.
Table 6 lists the voltage test points that you must measure and request for each channel with both
the DMM and the NI 4110 to complete verification. Take voltage measurements using the DMM
at each test point, and then take voltage measurements using the NI 4110 at each test point.
Compare the two values. Verify that the measurement error falls between the tolerances listed in
the
Test Limit (V)
column for the iteration of channel
x
in Table 6. If the output voltage that you
measure is outside the test limit, you must adjust the NI 4110.
Table 5.
NI 4110 Output Parameters and Test Limits for Voltage Programming
Accuracy Verification
Channel
Iteration
Output (V)
Current Limit (A)
Test Limit (V)
0
1
0
0.5
±0.00400
2
1.5
±0.00475
3
3
±0.00550
4
4.5
±0.00625
5
6
±0.00700
1
1
0
±0.01000
2
5
±0.01250
3
10
±0.01500
4
15
±0.01750
5
20
±0.02000
2
1
0
±0.01000
2
-5
±0.01250
3
-10
±0.01500
4
-15
±0.01750
5
-20
±0.02000
