Hi, there!
I have just succeeded in performing continuous synchronized AI on two PXI-boards (6229 and 6259) using the PXI_Clk10 backplane clock. My application is also supposed to generate continuous analog output through one of the boards. I have written both applications in separate projects and they work fine, but when I combine the AI and AO code in one VI and try to run it on the PXI-target, it fails. The AO starts, but the synchronized AI never gets past the first loop iteration.
Only one error message appears; labview claims that "..not all samples have yet been acquired". My bet is that this has something to do with a sample clock/Reference clock conflict. For the AO I left the source-terminal of the DAQmx Timing VI unwired to let labview choose the default AO sample clock. This should not be in conflict with the AI performed by the same card....?
I would be grateful for any help. Labview has an example of multi-function AI/AO, but this code seems to do things much the same way that I did. I will post my code as well when I'm back at work on Wednesday.
Einar
P.S. The AO does not have to be synchronized with the AI.