Measure duty cycle using DAQ digital input

[aRCo]

Hi all!

My system owns a PXI-8269 card and i would like to measure the duty cycle of a PWM digital signal generated by a device.

To acquire this signal, i'm going to use a DAQ digital input (PFIx) instead of a DAQ counter (CTRx) (they are already used for other applications).

Searching the examples database, i only found VIs which use counters. So i'm wondering if it is possible to realize this and how could i.

Thanks!

[w15nu]

Hi Arco,

Not sure what type is your hardware (PXI-8269), I can't find it on NI product page. Do you have spare Analog Input? It may be easier to use AI rather than DIO.

Cheers,

w15nu

[aRCo · Accepted solution]

Sorry, the correct part number is PXI-6289.

I solved acquiring a digital waveform, converting it to an analog waveform and then using the correct function in Functions palette -> Waveform -> Analog.

Thanks!

[aRCo]

Here's a screenshot.

Ciao