How to output 3 synchronized AO signals using 2 6036E cards using DAQ assistant for each card

[Shah]

Hi

I am trying to output 3 sinusoidal waveforms using 2 pci cards (two signals with the 6036E and one signal with a 6035E). The two sinusoidal waveforms generated with the 6036E maintain the same phase difference with respect to each other. Whereas the phase of the sinusoidal signal generated with the 6035E relative to the 6036E signals keeps drifting. I have read online that I need to connect an RTSI cable between the two cards and add it in MAX. I have done this. 

For each card I use one DAQ assistant to generate my output signals. Is there a way I can set one DAQ assistant as a master and the other as the slave. I dont want to use any other DAQmx VIs (Ive seen a couple of examples out there but I am not familiar with DAQmx) because I am comfortable with the DAQ assistant and I believe it should be possible with it as well.

Any help/examples will be greatly appreciated

Thanks

Shahriar

[Mark_SAI]

Hello,

I have a suggestion, and unfortunately it involves using one DAQmx block, as well as the DAQ Assistant.

The block I suggest trying is the DAQmx Export Signal block as shown here:

This block can be used to export the sample clock of the first DAQ Assistant to the RTSI0 line. Then load up the DAQ Assistant2 and set the sample clock source to RTSI0:

You could give this a go, and see if it works. 

Hope this helps!

Message Edited by macaba on 07-23-2009 07:04 AM