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ni.com
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NI PXIe-4339 Calibration Procedure
0.01
-0.01
7.5
0.0675
Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
(
Test Point
) *
(1 - 0.001) -
9.9 µV/V
(
Test Point
) *
(1 + 0.001) +
9.9 µV/V
0
Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
-9.9 µV/V
9.9 µV/V
-0.0675
Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
(
Test Point
) *
(1 + 0.001) -
9.9 µV/V
(
Test Point
) *
(1 - 0.001) +
9.9 µV/V
0.01
-0.01
10
0.09
Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
(
Test Point
) *
(1 - 0.001) -
7.4 µV/V
(
Test Point
) *
(1 + 0.001) +
7.4 µV/V
0
Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
-7.4 µV/V
7.4 µV/V
-0.09
Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
(
Test Point
) *
(1 + 0.001) -
7.4 µV/V
(
Test Point
) *
(1 - 0.001) +
7.4 µV/V
Table 9.
Ratio Mode Accuracy Limits (±0.02 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
0.02
-0.02
2.75
0.0495
Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
(
Test Point
) *
(1 - 0.001) -
32.4 µV/V
(
Test Point
) *
(1 + 0.001) +
32.4 µV/V
0
Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
-32.4 µV/V
32.4 µV/V
-0.0495
Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
(
Test Point
) *
(1 + 0.001) -
32.4 µV/V
(
Test Point
) *
(1 - 0.001) +
32.4 µV/V
0.02
-0.02
3.33
0.05994
Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
(
Test Point
) *
(1 - 0.001) -
26.7 µV/V
(
Test Point
) *
(1 + 0.001) +
26.7 µV/V
0
Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
-26.7 µV/V
26.7 µV/V
-0.05994
Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
(
Test Point
) *
(1 + 0.001) -
26.7 µV/V
(
Test Point
) *
(1 - 0.001) +
26.7 µV/V
Table 8.
Ratio Mode Accuracy Limits (±0.01 V/V Range) (Continued)
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
