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National Instruments Corporation
13
NI 9237 Calibration Procedure
Test Point Value
The
Test Point Value
is an approximate voltage value that the NI 9237
should read given the corresponding calibrator output and excitation
setting.
1-Year Absolute Error
The
1-Year Absolute Error
is the voltage value that you use to calculate
upper and lower limits.
Table 4.
NI 9237 Verification Test Limits
Excitation
Setting
Value (V)
Calibrator Output
Range (V/V)
Test Point
Value
(V/V)
1-Year
Absolute
Error
(V/V)
Location
Value (V)
Minimum
Maximum
2.5
Max
0.055
–0.025
0.025
0.022000
0.000063
2.5
Mid
0.000
–0.025
0.025
0.000000
0.000033
2.5
Min
–0.055
–0.025
0.025
–0.022000
0.000063
3.3
Max
0.073
–0.025
0.025
0.022000
0.000036
3.3
Mid
0.000
–0.025
0.025
0.000000
0.000010
3.3
Min
–0.073
–0.025
0.025
–0.022000
0.000036
5.0
Max
0.110
–0.025
0.025
0.022000
0.000058
5.0
Mid
0.000
–0.025
0.025
0.000000
0.000028
5.0
Min
–0.110
–0.025
0.025
–0.022000
0.000058
10.0
Max
0.220
–0.025
0.025
0.022000
0.000080
10.0
Mid
0.000
–0.025
0.025
0.000000
0.000045
10.0
Min
–0.220
–0.025
0.025
–0.022000
0.000080
