Sim. arb. signal within Timed Loop?

[mepausle]

Hi there,

Is there any inherent reason I couldn't/shouldn't put a Sim Arb Signal VI within a timed loop? I have a scenario in which i need to modulate an arbitrary signal as the experiment is being run. I've placed the express vi inside a timed loop set to execute every millisecond. The express VI is setup to generate a single point of a arb signal with a dt=1. It seems however that it generates the whole signal each time the loop is called. Is there an appropriate example or tutorial somewhere out there in cyberspace?

Apologize for not posting an example, but I am working from home tonight.

Regards,

[Steven_T]

Matthew,

I have tried making the simulate arbitrary signal vi output a singal point using your suggestions and it worked.  Perhaps you need to compare the VI you are using with this one. 

I hope this helps.

Steven T.

Message Edited by Steven T on 10-16-2006 11:46 AM

[mepausle]

I will give that example a shot and see if it differs from my attempt.

Thanks!
Matt

[mepausle]

Steven,
Your example worked like a champ. I believe I had an incorrect view of how to setup the timing of the express VI and how it interacts with the timed loop.

Thanks again,