Triggered Cameralink Acquisition only Capturing Half of the Frames

Question

Hello all,
I am aware of this page -- http://digital.ni.com/public.nsf/allkb/6FFA526966E2D29386257AA80054730A
It describes my problem well, but I cannot find a good solution.
I have four cameras that need to be triggered at the same time (they cannot be free-running!)... if I only trigger the cameras, and allow the frame grabbers to run without a trigger, I end up sporadically missing frames at higher and higher frame rates.  At 100FPS I lose about 40% of the data, but around 50FPS I capture all the data fine.
When I trigger both the frame grabber cards (1430s) with the cameras, I seem to consistently miss every other frame.
I have tried triggering the cameras on a rising edge and the cards on the falling edge, but no matter what I do I end up only collecting half of the frames I would expect to collect over a period of time.
Below is a snippet of code that I'm using for the acquisition, is anything glaringly obvious???
Thanks for any suggestions!
-MK

Answer 1

It sounds like the fastest your camera can go with an external trigger is 50 Hz.  As soon as you go faster than that, you miss every other trigger because the camera is still busy handling the previous trigger.
Will the camera go faster in free run?  If so, it is probably just a hardware limit on triggering.  If not, it could be your exposure time is limiting the frame rate.
Did you include details of which camera you are using?  That information would be useful.
Bruce