linking input frequency to output frequency (AI -> AO)

[ehchang2]

HI all,

I would like to generate a waveform (using cont. generation), with the same frequency as the input pulse train (say 100Hz).

Any idea how to go about this one?

Thanks.

p.s. attached file is my futile attemp....

[TroyK]

Have a look in the NI Example Finder (Help > Find Examples)

Then open the  "Multi-Function-Synch AI-AO.vi" and see how NI does it. (Hardware Input and Output > DAQmx > Synchronization > MultiFunction)

What version of LabVIEW do you have? What hardware do you have?

I just noticed you're using traditional DAQ not DAQmx. It's a fair bit trickier in traditional DAQ (not to mention much fewer people are still using it compared to DAQmx).

Message Edited by Troy K on 10-06-2008 09:07 AM

[TroyK]

This article might help you...http://zone.ni.com/devzone/cda/tut/p/id/2997

[ehchang2]

Troy,

thanks for the reply.

I am using NI BNC 2110 and labVIEW version 7.1. Actually this is the vi created by my coleague a while ago, and now I am trying to make some modifications. I will take a look at the link you posted. thanks again.

-Ernest

[TroyK]

If there aren't heaps of other places where the legacy traditional DAQ calls are made, you might want to consider changing over to DAQmx. It will be easier to develop in and easier to get support.