Hi,
I would like to trigger 41 channels (over 6 PXI-6133 cards) using 2 triggers.
One trigger is like a pre trigger, and the second a start trigger. So I would like to acquire data starting from the start trigger only if the pre-trigger was present.
Would a reference trigger produce the required outcome? So I use the pre-trigger as a start trigger then the second trigger as a reference with the 'pre trigger samples per channel' set to 0? (As in attached vis).
Also, I would like to use the PXI_Star lines. I have found examples about how to route the PXI_Star trigger lines to PFI0 or PFI1 on my PXI-6651, but I'm not sure what to put as the 'Source' of the DAQmx Start Trigger.vi. PXI_Star doesn't seem to be an option, only \PXI1Slotx\PXI_Star, and presumably i don't want all the cards triggering off the same Star line?
Any suggestions welcome!
Many thanks,
Sarah