National Instruments PXIe-4353, Calibration Procedure

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© National Instruments 7 NI PXIe-4353 Calibration Procedure
11. Acquire the voltage data.
Note
Make sure the calibrator and the NI PXIe-4353 are completely settled at the desired voltage
before acquiring data. When using the Fluke 5520A, wait at least 5000 ms for the system to settle
before issuing the start task command to the NI PXIe-4353.
Note You must set the read timeout value to something larger than the default, such as 20.0 seconds,
or you will get a timeout error.
12. Average the voltage values for each channel that you acquired. Compare the resulting average to
the Upper Limit and Lower Limit values in Table 4. If the result is between these values, the module
passes the test.
13. Clear the acquisition.
14. Repeat steps 4 through 13 for all test point values in Table 4. NI recommends that you verify all
values, although you can save time by verifying only the values used in your application.
15. Close the DAQmx calibration session with the action Cancel.
16. Disable the calibrator output and disconnect the calibrator from the module.
Analog Input Offset Verification
Complete the following steps to test the performance of the analog input offset of the module.
1. Open a DAQmx calibration session on your device.
2. Call the DAQmx Connect SC Express Calibration Accessory Channels VI. Configure the
CAL-4353 by setting the connection to
_short_tc_terminals
and the physical channels to
Dev1/ai0:31
.
3. Set voltage calibrator output to 0 V.
4. Complete steps 6 through 13 of the Analog Input Voltage Accuracy Verification section to test the
performance of analog input offset of the module. Repeat these steps for all timing modes.
5. Compare the resulting average to the Upper Limit and Lower Limit offset values in Table 5.
NI recommends that you verify all values, although you can save time by verifying only the values
used in your application.
6. Repeat steps 6 through 13 of the Analog Input Voltage Accuracy Verification section with autozero
mode set to None in step 7. Repeat these steps for all timing modes.
7. Compare the resulting average to the Upper Limit and Lower Limit offset values in Table 6.
NI recommends that you verify all values, although you can save time by verifying only the values
used in your application.
8. Close the DAQmx calibration session with the action Cancel.
Note After verifying your module, you can update the last calibration date by opening a DAQmx
external calibration session and closing it with the action Commit.