Best way to produce PWM using NI-6008

[dotNet_to_LabW]

Hello,

I am looking for best method to produce Rectangular waveform with a specific pulse width/pause ratio using NI-6008. It does not matter if I use DO or AO port. Important is frequency which should range soemthing between 1 Hz to 1kHz. (so far I have understood from datasheet that the AO has max output frequency of 150 Hz which does not meet our requirement)

I have tried using frequency functions (DAQmxWriteCtrFreq or DAQmxWriteCtrFreqScalar) in the examples which were shipped with the device but get an error like channel does not support the function or device does not have channels to support these functions.

Regards

RB

[Suse]

Hi,

which error message do you exactly get? Can you post a screenshot?

If there is an error code please let me know which one.

Best regards

Suse

[dotNet_to_LabW · Accepted solution]

I do not think that NI/6008 shall be used for this purpose because max frequencz at AO is 150 Hy and DO are static, so they can not be used for this purpose. Am using Frequency generator now and is working fine.