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Dynamic generation delay problem using PXI6552 trigger Line 0

Hello,

 

I notice a problem of delay while dynamic generation with PXI6552 cards. I am using two PXI6552 cards, while one card is only sending a trigger on trigger Line 0 (RTSI 0) while the other card is waiting for the trigger and then starts a dynamic generation and acquisition sessions simultaneously.

I notice a delay of ~53 samples of the generation session. Thus the acquisition session samples ~53 samples BEFORE the generation starts.

I attached the sample program that I notice the problem.

 

I also noticed that this delay problem occurs always when I export the trigger (niHSDIO Export Signal.vi) and use 'Start Trigger' as signal. If I use 'Data Active Event' with another trigger type e.g. PFI0 (since I noticed it doesn't work with the PXI trigger Lines) then there is no delay.

 

How can I overcome this delay problem?

 

Kind regards,

Luc Cole

 
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