two frequencies generation at the same time

[mohannandigana]

Is it possible to get two analog outputs at the same time using PCI 6036E DAQ Card  

We are working with PCI 6036 DAQ card and LabVIEW 7.1 for generating two frequencies (sine wave) simultaneously from two outputs.  We are not able to generate simultaneously and it appears only one output at a time. Is it possible with this DAQ card to generate two frequencies with  the support of LabVIEW  . 

If it is not possible we request NI to provide us alternative PCI cards to generate two frequencies simutaneously from two outputs of the card with the support of LabVIEW. Our application is to excite two piezo electric driven mirrors (PZTs) simutaneously at same frequency and amplitude. The frequency range is only upto 15 KHz.

I request you to kindly advise us in this regard. 

Mohan

[mohannandigana]

I forgotten at that there should be a phase match between the two frequencies.

Mohan

[David L.]

Mohan,

I would like to ask for more information about how you are measuring the analog output and seeing the phase offset. If you are doing analog input (I.E – Measuring your analog output) with the same 6036 and starting the tasks simultaneously, the AI may be reading old samples. Please see this discussion forum  (page 2, post 4). It would also be helpful if you could post pictures of what you are seeing. Is the change delay different at different rates?