NI PXI-4130 Calibration Procedure
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© National Instruments
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13
calibrator. Record the actual resistance value displayed by the calibrator. You should also
configure the DMM to the settings in Table 4.
For the 200
μ
A, 2 mA, 20 mA, and 200 mA current ranges of channel 1, divide the voltage
measurement you record from the DMM by the resistance measurement you record from the
calibrator to calculate the output current. For the 1 A current range of channel 0 and the
2 A current range of channel 1, the DMM measures the output current directly. Subtract the
Output
value for the iteration of channel
x
in Table 7 from the output current calculated above to
obtain the output error.
Compare the output error to the
Test Limit
for the iteration of channel
x
in Table 7. If the output
error is outside the test limit, you must adjust the NI 4130.
Table 7.
NI 4130 Output Parameters and Test Limits for Current Programming
Accuracy Verification
Channel(s)
Current
Limit
Range
Voltage
Level
Range
Voltage
Level
Iteration
Output
(A)
Test Limit
0
1 A
6 V
6 V
1
50 mA
±4.08 mA
2
350 mA
±4.53 mA
3
700 mA
±5.05 mA
1
200
μ
A
20 V
20 V
1
4.00
μ
A
±0.101
μ
A
2
50.0
μ
A
±0.115
μ
A
3
0.10 mA
±0.130
μ
A
4
0.15 mA
±0.145
μ
A
5
0.20 mA
±0.160
μ
A
-20 V
6
4.00
μ
A
±0.101
μ
A
7
0.50
μ
A
±0.115
μ
A
8
0.10 mA
±0.130
μ
A
9
0.15 mA
±0.145
μ
A
10
0.20 mA
±0.160
μ
A