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NI 5412 Calibration Procedure
External Calibration Procedures
The complete external calibration procedure consists of self-calibrating, verifying the
performance of the NI 5412, adjusting the calibration constants, and verifying again after the
adjustments. In some cases, the complete calibration procedure may not be required. Refer to the
section for more information.
The external calibration procedure automatically stores the calibration date to allow traceability.
Writing the Calibration Procedure
Before you begin to write the calibration program, review the programming flowcharts in
Figures 1 and 2.
Calibration Procedures in LabVIEW
To write calibration procedures in LabVIEW, you must use the VIs included in the
niFgen.llb
file. After installation, these VIs appear within the NI-FGEN Calibration palette
under
Functions» Instrument I/O»Instrument Drivers»NI-FGEN»Calibration
.
Calibration Procedures in LabWindows/CVI
To write calibration procedures in LabWindows/CVI, you must use the function panels included
in the
niFgen.fp
file. After installation, you can locate the calibration functions under the
Calibration class node.
Calibration Procedures in C
To write calibration procedures in C, you must include the
niFgen.h
file in the code that calls
the calibration functions, and you must link the
niFgen.lib
file into the build of your
executable.
Verifying NI 5412 Specifications
Note
Always self-calibrate the NI 5412 before beginning a verification procedure.
This section provides instructions for verifying the NI 5412 specifications and for updating the
calibration cycle.
Verification determines whether the device is performing within its specifications prior to
external adjustment. Verification and external adjustment together compose a complete
calibration. To verify that the NI 5412 still meets its specifications, you must use NI-FGEN to
control the NI 5412.
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.
