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Measure PulseWidth

Measure PulseWidth

‎06-18-2019 09:51 PM

Use PXI6229 to measure Pulse Width with any PFI,code is next:

DAQmxErrChk (DAQmxCreateTask("",&taskHandle));

DAQmxErrChk (DAQmxCreateCIPulseWidthChan(taskHandle,"PXI1Slot16/ctr0", "cheese",0.000000100,0.830000000, DAQmx_Val_Ticks,DAQmx_Val_Rising,""));

DAQmxErrChk (DAQmxSetCIPulseWidthTerm(taskHandle,"cheese", "/PXI1Slot16/PFI15")); DAQmxErrChk  DAQmxErrChk (DAQmxStartTask(taskHandle)); /*********************************************/ // DAQmx Read Code /*********************************************/ DAQmxErrChk (DAQmxReadCounterScalarF64(taskHandle,10.0,&data[0],0));

 

 the measure value is always 0,But when I use the default connection PFI9,the measure value is right ,and my hardware connecting is no problem.

Please help me thanks

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