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NI PXI-5422 Calibration Procedure 30 ni.com
Table 6. Values for Verifying the Gain of the Direct Analog Path
Iteration Gain
Ideal
Positive
Full-Scale
(Volts)
Ideal
Negative
Full-Scale
(Volts)
Measured
Positive
Full-Scale
(Volts)
Measured
Negative
Full-Scale
(Volts)
Offset
(Volts)
1
Offset
Limit
(Volts)
Error
Positive
Full-Scale
(Volts)
2
Error
Negative
Full-Scale
(Volts)
3
Calibration
Test Limit
(Volts)
Published
Spec
(Volts)
1 1.000000 1.000000 –1.000000 ±0.025000 ±0.001600 ±0.004000
2 0.950000 0.950000 – 0.950000 ±0.025000 ±0.001520 ±0.003800
3 0.900000 0.900000 – 0.900000 ±0.025000 ±0.001440 ±0.003600
4 0.850000 0.850000 – 0.850000 ±0.025000 ±0.001360 ±0.003400
5 0.800000 0.800000 – 0.800000 ±0.025000 ±0.001280 ±0.003200
6 0.750000 0.750000 – 0.750000 ±0.025000 ±0.001200 ±0.003000
7 0.710000 0.710000 – 0.710000 ±0.025000 ±0.001136 ±0.002840
1
Offset = ((Measured Positive Full-Scale Value) + (Measured Negative Full-Scale Value))/2
2
Error Positive Full-Scale Value = (Measured Positive Full-Scale Value) – Offset – (Ideal Positive Full-Scale Value)
3
Error Negative Full-Scale Value = (Measured Negative Full-Scale Value) – Offset – (Ideal Negative Full-Scale Value)