National Instruments NI-9207, Calibration Procedure

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6 | ni.com | NI 9207 Calibration Procedure
5. Acquire and average samples.
a.
Create and configure an AI voltage task on the NI 9207 according to Table 5.
b. Configure the AI current task according to Table 6. Set the ADC timing mode to
high-resolution.
c. Start the task.
d. Average the readings.
e. Clear the task.
6. Compare the average to the limits in Table 7.
7. Repeat steps 5 and 6 with the ADC timing mode on the NI 9207 set to high-speed.
8. Set the calibrator to Standby mode (STBY).
9. Repeat steps 3 through 8 for each test point in Table 7.
10. Disconnect the calibrator from the device.
11. Repeat steps 1 through 10 for each current channel on the NI 9207.
Table 5.
NI 9207 Configuration for Current Accuracy Verification
Input Range
Scaled Units Terminal Configuration Min Max
-0.02 0.02 Amps RSE
Table 6. Current Timing Configuration
ADC Timing Mode Sample Mode Samples to Read
High-Resolution N Samples 5
High-Speed N Samples 75
Table 7. NI 9207 Test Limits for Current Accuracy Verification
Range (A) Test Point 1-Year Limits
Minimum Maximum Location Value (A) Lower Limit (A) Upper Limit (A)
-0.020000 0.020000 Pos FS 0.021000 0.020970 0.021030
-0.020000 0.020000 Mid 0.000000 -0.000002 0.000002
-0.020000 0.020000 Neg FS -0.021000 -0.021030 -0.020970