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NI PXIe-4339 Calibration Procedure
Table 12.
Ratio Mode Accuracy Limits (±0.04 V/V Range)
Range (V/V)
Excitation
Setting
(V)
Calibrator
Output
(V)
Measured
Excitation
(V)
Test Point
(V/V)
Lower Limit
(V/V)
Upper Limit
(V/V)
High
Low
0.04
-0.04
0.625
0.0225
Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
(
Test Point
) *
(1 - 0.001) -
118.4 µV/V
(
Test Point
) *
(1 + 0.001) +
118.4 µV/V
0
Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
-118.4 µV/V
118.4 µV/V
-0.0225
Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
(
Test Point
) *
(1 + 0.001) -
118.4 µV/V
(
Test Point
) *
(1 - 0.001) +
118.4 µV/V
0.04
-0.04
1
0.036
Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
(
Test Point
) *
(1 - 0.001) -
74 µV/V
(
Test Point
) *
(1 + 0.001) +
74 µV/V
0
Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
-74 µV/V
74 µV/V
-0.036
Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
(
Test Point
) *
(1 + 0.001) -
74 µV/V
(
Test Point
) *
(1 - 0.001) +
74 µV/V
0.04
-0.04
1.5
0.054
Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
(
Test Point
) *
(1 - 0.001) -
49.3 µV/V
(
Test Point
) *
(1 + 0.001) +
49.3 µV/V
0
Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
-49.3 µV/V
49.3 µV/V
-0.054
Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
(
Test Point
) *
(1 + 0.001) -
49.3 µV/V
(
Test Point
) *
(1 - 0.001) +
49.3 µV/V
0.04
-0.04
2
0.072
Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
(
Test Point
) *
(1 - 0.001) -
37.0 µV/V
(
Test Point
) *
(1 + 0.001) +
37.0 µV/V
0
Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
-37.0 µV/V
37.0 µV/V
-0.072
Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
(
Test Point
) *
(1 + 0.001) -
37.0 µV/V
(
Test Point
) *
(1 - 0.001) +
37.0 µV/V
0.04
-0.04
2.5
0.09
Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
(
Test Point
) *
(1 - 0.001) -
29.6 µV/V
(
Test Point
) *
(1 + 0.001) +
29.6 µV/V
0
Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
-29.6 µV/V
29.6 µV/V
-0.09
Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
(
Test Point
) *
(1 + 0.001) -
29.6 µV/V
(
Test Point
) *
(1 - 0.001) +
29.6 µV/V