National Instruments PXIe-4468, Процедура калибровки

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PXIe-4468 Calibration Procedure
22
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4. Set the AO Gain parameter according to the values from
Table 14
.
Table 14:
AO Attenuation
AO Attenuation (dB) AO Gain (dB)
0 0
10 -10
20 -20
30 -30
5. Create an array of 20000 points and fill every element with value 0.
6. Write the array to AO and start the task.
7. Measure the output voltage with the DMM.
8. Stop and clear the task.
9. Compare the result with the limits in
Table 11
.
AO Differential Gain Accuracy Verification
Test Limits
Table 15:
AO Differential Gain Verification Limits
Output Terminal
Configuration
AO
Attenuation
(dB)
As-Found Test Limit As-Left Test Limit
Lower
Limit (V
rms
)
Upper
Limit (V
rms
)
Lower Limit
(V
rms
)
Upper
Limit (V
rms
)
Differential
0 6.27828 6.32180 6.29710 6.30290
10 1.99310 2.00692 1.99908 2.0092