simultaneous analog out

[wattsman]

My customer has an NI PCI-6111 and is attempting to set both AO channels to update at 1 MS/s simultaneously, but the output signals keep drifting apart. It is my understnading that since these channels each have a D/A converter, there shold be no problems with the signals drifting. Is this correct? What is the best method of insuring that the signals stay synced? In LabVIEW?

[Filipe A.]

Hello;

You are right on your consideration when you say that the 6111 has one DAC per channel. Once you start the generation on multiple channels, all channels will be in sync.

That is sounding like the specific board you have is presenting some sort of malfunction.

Regards
Filipe A.
Applications Engineer
National Instruments