how can I generate variable frequency in different time with NI USB 6229?!

[worldviol]

Hello,

  I have NI USB 6229, and I want to have VI which;

  in this VI I have to firstly generate a initial frequency togive it to a circuit, after that according to the results that I am reading from circuit I have to make some delay in the same frequency  which I generated before and again give it to circuit to see the results again.actually in other word it is some kind of feedback process.

I would be thankful if some one can help me to how to make this VI because still I do not have any idea to program it.

Sorry if I could not explain well because I am as beginner .

thanks

[hicksc]

Hi worldviol

I think a great place to start would be for you to have a look at the examples included in LabVIEW (help >> Find Examples..)

Have a look under 'Hardware Input and Output' > 'DAQmx' and then 'Analog Input' and 'Analog Output' you will also probably find 'Synchronization' useful.

The next stage would be to pick the most appropriate design pattern.

I think the producer consumer design pattern would be useful here as you would be reading and writing to the device at different rates.

Kind Regards