b)
Configure the task timing according to the following
NI 9251 with mini XLR Timing
Configuration
table.
Table 3. NI 9251 with mini XLR Timing Configuration
Sample Mode
Samples Per Channel
Rate (kS/s)
Finite Samples
10240
102.4
c)
Start the task.
d)
Read the samples from the NI 9251 with mini XLR.
e)
Average the samples for each AI channel.
f)
Clear the task.
6.
Set the calibrator to Standby mode (STBY).
7.
Compare the averaged samples to the limits in the
NI 9251 with mini XLR Verification
Test Limits
table to verify the input accuracy. If the value is within these limits, the device
passes the test.
8.
Repeat steps 3 through 7 for each test point in the
NI 9251 with mini XLR Verification
Test Limits
table.
9.
Disconnect the calibrator from the device.
Table 4. NI 9251 with mini XLR Verification Test Limits
Test Point
2-Year Limits
Location
Value (V)
Lower Limit (VDC)
Upper Limit (VDC)
Minimum
-1.9
-1.905161
-1.894839
Mid-scale
0
-0.002885
0.002885
Maximum
1.9
1.894839
1.905161
Note
The test limits listed in the
NI 9251 with mini XLR Verification Test Limits
table are derived using values from the
NI 9251 with mini XLR Accuracy Under
Calibration Conditions
table.
Adjustment
The following performance adjustment procedure describes the sequence of operation required
to adjust the NI 9251 with mini XLR.
Accuracy Adjustment
Complete the following procedure to adjust the accuracy performance of the
NI 9251 with mini XLR.
1.
Set the calibrator to Standby mode (STBY).
2.
Connect the NI 9251 with mini XLR to the calibrator as shown in the
Accuracy
Verification
section.
NI 9251 Calibration Procedure
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