National Instruments NI 9209, Процедура калибровки

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NI 9209 Calibration Procedure | © National Instruments | 5
b. Configure the AI voltage task according to Table 3. Set the ADC timing mode to
high-resolution.
c. Start the task.
d. Average the readings.
e. Stop and clear the task.
6. Compare the average to the limits in Table 4.
Note
The test limits listed in Table 4 are derived using the values in Table 8.
Note
The uncertainty of the calibration standard is not included in these limits.
7. Repeat step 5 and 6 with the ADC timing mode on the NI 9209 set to high-speed.
8. Set the calibrator to Standby mode (STBY).
9. Repeat steps 3 through 8 for each test point listed in Table 4.
10. Disconnect the calibrator from the device.
11. Repeat steps 1 through 10 for each voltage channel on the NI 9209.
Table 3. NI 9209 Voltage Timing Configuration
ADC Timing
Mode Sample Mode Samples to Read Sample Rate
High-Resolution N Samples 5 19 S/s
High-Speed N Samples 75 500 S/s
Table 4.
NI 9209 Verification Test Limits for Differential Voltage Accuracy
Range (V) Test Point 2-Year Limits
Minimum Maximum Location
Value
(V)
Lower Limit
(V)
Upper Limit
(V)
-10.00000 10.00000 Pos FS 10.00000 9.98972 10.01028
-10.00000 10.00000 Mid 0.00000 -0.00058 0.00058
-10.00000 10.00000 Neg FS -10.00000 -10.01028 -9.98972