National Instruments 446 Series User Manual (English)

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NI 446X Calibration Procedure 20 ni.com

You use the object myTaskHandle in all subsequent NI-DAQmx

function calls.

4. Create an AO Voltage channel through NI-DAQmx using the following

function.

5. Modify the AO voltage channel property using the following

functions.

NI-DAQmx Function Call LabVIEW Block Diagram

Call DAQmxCreateAOVoltageChan with the

following parameters:

taskHandle:

myTaskHandle

physicalChannel: dev1/ao0

nameToAssignToChannel: ""

minVal: -10.0

maxVal: 10.0

units: DAQmx_Val_Volts

customScaleName: NULL

NI-DAQmx Function Call

Call DAQmxSetAOIdleOutputBehavior with the following parameters:

taskHandle:

myTaskHandle

channel: dev1/ao0

data: DAQmx_Val_HighImpedance

Call DAQmxSetAOGain with the following parameters:

taskHandle:

myTaskHandle

channel: dev1/ao0

data: -40.0

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