National Instruments NI 9226, Процедура калибровки

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NI 9216/9226 Calibration Procedure
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© National Instruments
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5
Note
The limits are only based on the NI 9216/9226 accuracy. The uncertainty of
calibration standard is not included.
Note
The test limits listed in Table 2 are derived using the values in Table 6.
5. Set the calibrator to Operate mode (OPR).
6. Acquire and average samples from one channel.
a. Create and configure a 4-wire AI resistance task on the NI 9216/9226 according to
Table 3.
b. Configure the ADC Timing Mode to High Resolution.
Note
Use appropriate channel number in place of “x” in “AIx.” For example, use
AI3 for channel 3.
c. Configure the task timing according to Table 4.
d. Start the task.
e. Read the samples from the NI 9216/9226.
f.
Average the samples.
g. Stop and clear the task.
7. Compare the per-channel averages to the limits in Table 2.
8. Set the calibrator to Standby mode (STBY).
9. Repeat steps 3 through 8 for each test point listed in Table 2.
10. Disconnect the NI 9216/9226 channel from the calibrator.
11. Repeat steps 2 through 10 for any other desired channel of NI 9216/9226.
Table 3. NI 9216/9226 Voltage Configuration
Module Physical Channel
Range
Minimum (
Ω
) Maximum (
Ω
)
NI 9216 AIx 0 400
NI 9226 AIx 0 4000
Table 4. NI 9216/9226 Task Timing Configuration
Sample Mode Samples Per Channel Rate (S/s)
Finite Samples 10 5