NI PXIe-4304/4305 Calibration Procedure
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© National Instruments
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9
5.
Refer to Table 3 to configure the PXIe-4139. Set the PXIe-4139 output equal to the first
Test Point for the corresponding range in Table 7 that was configured in step 4.
6.
Enable the PXIe-4139 output.
7.
Refer to Table 4 to configure the PXI-4071 and acquire a voltage measurement.
8.
Call the 4304/4305 instance of the DAQmx Adjust SC Express Calibration function with
the following parameters:
calhandle in
: calhandle output from DAQmx Initialize External Calibration reference
voltage
: DMM measurement value from step 7
9.
Repeat steps 5 through 8 for the remaining Test Point values from Table 7 for the
corresponding range that was configured in step 4.
10. Repeat steps 4 through 9 for the remaining ranges from Table 7.
11. Call the 4304/4305 instance of the DAQmx Adjust SC Express Calibration function with
the following parameters:
calhandle in
: calhandle output from DAQmx Initialize External Calibration
action
: commit
EEPROM Update
When an adjustment procedure is completed, the PXIe-4304/4305 internal calibration memory
(EEPROM) is immediately updated.
If you do not want to perform an adjustment, you can update the calibration date without making
any adjustments by initializing an external calibration and closing the external calibration.
Table 7.
Voltage Mode Adjustment Test Points
Range (V)
Test Points (V)
Max
Min
42
-42
-37.8
-25.2
-12.6
0
12.6
25.2
37.8
