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ni.com
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NI 5122/5124/5142 Calibration Procedure
14. Calculate the error in the vertical gain as a percentage of input using the following formula:
where
a
= the
Measured Positive Voltage
b
= the
Measured Negative Voltage
c
= the applied
Positive Voltage
d
= the applied
Negative Voltage
Compare the resulting percent error to the
Calibration Test Limits
or the
Published
Specifications
listed in Table 7 (NI 5122/5142) or Table 8 (NI 5124). If the result is within
the selected test limit, the device has passed this portion of the verification.
15. Repeat steps 2 through 14 for each iteration in Table 3.
Table 7.
NI 5122/5142 Vertical Gain Stimuli and Limits
Range
(V)
Positive
Input (V)
Negative
Input (V)
Calibration
Test Limits
Published
Specifications
0.2
0.09
-0.09
±0.37%
±0.65%
0.4
0.18
-0.18
±0.37%
±0.65%
1
0.45
-0.45
±0.37%
±0.65%
2
0.9
-0.9
±0.37%
±0.65%
4
1.8
-1.8
±0.37%
±0.65%
10
4.5
-4.5
±0.37%
±0.65%
20
9
-9
±0.37%
±0.65%
Table 8.
NI 5124 Vertical Gain Stimuli, Calibration Test Limits,
and Published Specifications
Range
(V)
Positive
Input (V)
Negative
Input (V)
Calibration
Test Limits
Published
Specifications
0.2
0.09
-0.09
±0.3975%
±0.65%
0.4
0.18
-0.18
±0.3975%
±0.65%
1
0.45
-0.45
±0.3975%
±0.65%
2
0.9
-0.9
±0.3975%
±0.65%
4
1.8
-1.8
±0.3975%
±0.65%
error
a b
–
c d
–
------------
1
–
100
=