National Instruments PXIe-4339, Процедура калибровки

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NI PXIe-4339 Calibration Procedure | © National Instruments | 13
Note
The high and low limit values in Table 8 will be slightly different for each
channel, due to channel-to-channel differences in the excitation voltage.
12. Repeat steps 10 through 13 for each of the test points for the given excitation.
13. Repeat steps 10 through 11 using
Dev1/ai1,ai3,ai5,ai7
for Table 6 channels and
Dev1/ai0,ai2,ai4,ai6
for Table 7 channels.
14. Repeat steps 10 through 12 for each excitation value in Table 8.
15. Repeat steps 10 through 14 using Table 9 through Table 15.
Table 8. Ratio Mode Accuracy Limits (±0.01 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
0.01 -0.01 2.75 0.02475 Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
(
Test Point
) *
(1 - 0.001) -
26.9 µV/V
(
Test Point
) *
(1 + 0.001) +
26.9 µV/V
0 Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
-26.9 µV/V 26.9 µV/V
-0.02475 Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
(
Test Point
) *
(1 + 0.001) -
26.9 µV/V
(
Test Point
) *
(1 - 0.001) +
26.9 µV/V
0.01 -0.01 3.33 0.02997 Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
(
Test Point
) *
(1 - 0.001) -
22.2 µV/V
(
Test Point
) *
(1 + 0.001) +
22.2 µV/V
0 Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
-22.2 µV/V 22.2 µV/V
-0.02997 Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
(
Test Point
) *
(1 + 0.001) -
22.2 µV/V
(
Test Point
) *
(1 - 0.001) +
22.2 µV/V
0.01 -0.01 5 0.045 Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
(
Test Point
) *
(1 - 0.001) -
14.8 µV/V
(
Test Point
) *
(1 + 0.001) +
14.8 µV/V
0 Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
-14.8 µV/V 14.8 µV/V
-0.045 Vm_ex_ch#
(calibrator
output)/
Vm_ex_ch#
(
Test Point
) *
(1 + 0.001) -
14.8 µV/V
(
Test Point
) *
(1 - 0.001) +
14.8 µV/V