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NI PXI-5422 Calibration Procedure 14 ni.com
Verifying NI PXI-5422 Specifications
Note Always self-calibrate the NI PXI-5422 before beginning a verification procedure.
This section provides instructions for verifying the NI PXI-5422
specifications. This section also includes instructions for updating the
calibration cycle.
Verification determines whether the device is performing within its
specifications prior to external adjustment. Verification and external
adjustment together comprise a complete calibration. To verify that the
NI PXI-5422 still meets its specifications, you must use NI-FGEN to
control the NI PXI-5422.
The steps in the verification procedures describe the code that you use to
generate the appropriate signals, as well as the NI-FGEN function calls
that you make to verify specifications.
You can verify the following specifications for the NI PXI-5422:
• Oscillator frequency accuracy
• DC gain and offset accuracy
The verification procedure for each of these specifications includes setting
up, programming, and cleaning up.
Note If any of these tests fail immediately after you perform an external adjustment, verify
that you have met the required test conditions before you return the NI PXI-5422 to NI for
repair.
Refer to Table 2 for information about which instrument to use for
verifying each specification. Refer to Figure 3 for the names and locations
of the NI PXI-5422 front panel connectors.