PXI-6602 Generate Quadrature Signals A,B using DAQmx in CVI

[gramirezv]

Hi,

I want to know if it's possible to generate signals for a quadrature encoder...

I want to generate Signal A and then Signal B with a 90° of delay from the other and be able to define the number of pulses I want to generate.

I've been trying to generate the signals with DAQmxCreateCOPulseChanFreq, but I don't know to start Singal B with the 90° delay.

Does any one have any experience on this?

Thank you for your help,

[CaEnOs · Accepted solution]

Hello gramirezv good afternoon,

Here is a KB that may help you to generate two pulse trains with the same frequency but with a phase shift:

How Can I Generate Two Pulse Trains Phase Shifted from Each Other on My E Series Card?

http://digital.ni.com/public.nsf/allkb/26CCE4F74DACFD1886256DCF006B011A?OpenDocument

Have a great evening,

Best regards,

CaEnOs

[gramirezv]

Hi CaEnOs,

That document really got me in the right direction, I was able to figure a solution based on that and some legacy code we had in our system where we generated similar signals.

Regards,