AO AI synchronization with non-regeneration

[scalpas]

Hi,

 I'm working on a program to simultaneously generate and acquire signals. Both operations are carried out continuously. The acquisition part is standard and the generation is in non-regeneration mode, because the signal is updated every period. Both operations are controlled by the same while loop. The program is fairly similar to the "Multi-Function-Synch AI-Read Dig Chan.vi".

The sample rate is different for the 2 operations. For the 2 operations to be synchronised and to not miss any data, is it correct that the following condition has to be verified :

# of samples read / generation sample rate  =  # of samples written / acquisition sample rate

Is this enough for the program to work properly, or I have I missed something ?

I have a PCI-6221 (37 pin) card and Labview 8.0.

Thanks, 

[Bueller]

Hi Scalpas,

Please check the "Multi Function Synchronization" of the following link

http://zone.ni.com/devzone/cda/tut/p/id/3615

Best Regards,

Faris

[scalpas]

Hi Faris,

Thanks for your answer. I've read this tutorial, but it doesn't include continuous generation and non-regeneration.

Regards, 

[Bueller]

Hi,

I really can't confirm your first question unless you  post a screen shot of your code, or the code itself.

Best regards,

Faris

[scalpas]

Hi,

I was a bit confused when I wrote my first message, but I've played around with the various timing parameters and I think I've worked everything out.

Thanks for your help !