Synchronize analog and digital signal acquisition on 2 PCI-6133 cards

[kvan]

Is it possible to synchronize analog and digital signal acquisition on 2 PCI-6133 cards.  I can get the analog working fine between the two cards but when adding the digital signals I get error -200452 from DAQmx Trigger telling me the specified property is not supported by the device.  Can I not trigger a digital acquisition on these cards?  Is there some work around?

Thanks

[F._Schubert]

I have not specific experience with the 6133. On those I use I only need to set the sampling clock of DI to be the AI Sampling Clock. As soon as AI starts running (receives the trigger), the sampling clock is running giving my a synced digital waveform.

Felix

[Paul_C.]

Hi,

 Felix is correct that you can use the analog sample clock to synchronize and time your digital signals.  This is done by starting the digital task prior to the analog task and selecting the analog sample clock as the sample clock source for the digital task.  If you are using LabVIEW, there is a shipping example that demonstrates this behavior called "Multi-Function-Synch AI-Read Dig Chan.vi".  This can be found using the Example Finder (Help » Find Examples in LabVIEW).  Navigate from Hardware Input and Output » DAQmx » Synchronization » Multi-Function. 

I hope this helps,

Paul C.