Square waveform generator

[Saridar]

Hi,

I want to make a continuous square waveform. there are some samples and files online to do so, but I'd like to be able to change the frequency of waveform continuously, I mean something like a function generator. I try to use PFI channel in NI 6221, but It just provides waveform with constant frequency. I am wondering if it is a good idea to use PFI channel? I want to provide 100 to kHz square waveform.

Thanks,

[chris88 · Accepted solution]

Hi Saridar

This example may be what you are looking for! 

Regards 

[Saridar · Accepted solution]

Hey Chris,

Thanks for your response. It is pretty useful and it gives me some idea for future works.

I got some solution for my case from Labview 8.5 examples. I got theidea that I need to use regeneration mode to make a reliable data, kind of independent of windows interruptpion (I mean, when it is not in regenerate mode, windows updates process or anti-virus process made some lags on the output freq.). I was able to modify the code in a way that it lets me to change the freq. on fly.

Thanks,

Saridar