National Instruments NI PXI-5422 Manual de usuario descargar pdf (Pagina 20)

NI PXI-5422 Calibration Procedure 20 ni.com

7. Call niFgen_SetAttributeViBoolean to enable the analog output

(niFgen property node: Basic Operation»Output Enabled) using

the following parameters:

• vi: The session handle returned from

niFgen_init

• channelName: "0"

• attributeID: NIFGEN_ATTR_OUTPUT_ENABLED

• value: VI_TRUE

8. Create an array of waveform samples for the positive full-scale DC

waveform. This array should contain 500 samples with each sample

having the value

1.0 (representation: double).

9. Call

niFgen_CreateArbWaveform (niFgen Create Arbitrary

Waveform VI) using the following parameters:

• vi: The session handle returned from

niFgen_init

• wfmSize: The size in samples (

500) of the waveform you created

in step 8

• wfmData: The array of waveform samples that you created in

step 8

• wfmHandle: The variable passed by reference through this

parameter receives the value (waveform handle) that identifies the

waveform created by this function (positive full-scale handle).

10. Create an array of waveform samples for the negative full-scale DC

waveform. This array should contain 500 samples with each sample

having the value

–1.0 (representation: double).

11. Call

niFgen_CreateArbWaveform (niFgen Create Arbitrary

Waveform VI) using the following parameters:

• vi: The session handle returned from

niFgen_init

• wfmSize: The size in samples (

500) of the waveform that you

created in step 10

• wfmData: The array of waveform samples that you created in

step 10

• wfmHandle: The variable passed by reference through this

parameter receives the value (waveform handle) that identifies the

waveform created by this function (negative full-scale handle).

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National Instruments NI PXI-5422 Manual de usuario Pagina 20