Hello,
When trying to retrigger output with a 653x device, there is some amount of software overhead. This is unavoidable as the board itself does not support retriggering. However, there are two solutions to this problem, one is a fast software reset, and the other is to create a retriggered pulse train.
If you want to use software for resetting the trigger, then there is a good example for doing this. The example uses a call that preserves a configuration setup. Take a look
Here.
If you would like to use hardware to solve this problem, take a look
pd4?p_guid=B123AE0CBAFD111EE034080020E74861&p_node=DZ52321&p_source=External�>Here. This example does require a counter timer board, which supports retriggering.
Best regards,
Justin Tipton
National Instruments