NI 9212 Calibration Procedure
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© National Instruments
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7
b.
Configure the AI voltage channel timing according to Table 3.
c.
Start the task.
d.
Average the readings.
e.
Clear the task.
9.
Set the calibrator to Standby mode (STBY).
10. Compare the average to the limits in Table 4.
11. Repeat steps 6 through 10 for each test point.
12. Repeat steps 6 through 11 for each ADC timing mode on the NI 9212.
Note
The test limits listed in Table 4
are derived using the values in Table 11.
Table 3.
NI 9212 Voltage Channel Timing Configuration
ADC Timing Mode
Sample
Mode
Samples to
Read
Rate (S/s)
Timeout (s)
High Resolution
Finite
20
1.8
30
Best 50 Hz Rejection
80
7.1
Best 60 Hz Rejection
100
8.3
High Speed
1,000
95
Table 4.
NI 9212 Voltage Verification Test Limits for Positive and Negative Test Points
ADC
Timing
Mode
Range (mV)
Test Point
1-Year Limits
Min
Max
Location
Value
(mV)
Lower
Limit (mV)
Upper
Limit (mV)
High
Resolution,
Best
50/60 Hz
Rejection
-78.125
78.125
Negative FS
-70
-70.020
-69.980
Negative Mid
-35
-35.013
-34.987
Positive Mid
35
34.987
35.013
Positive FS
70
69.980
70.020
High Speed
Negative FS
-70
-70.022
-69.978
Negative Mid
-35
-35.014
-34.986
Positive Mid
35
34.986
35.014
Positive FS
70
69.978
70.022
