Timed Loop with DAQmx create timing source VI

[bigdawg56]

Can someone point out why the two timed loops shown in the attached PNG do not function the same. I am trying to use a timed loop with the DAQmx create timing source VI. I can't even get the loop to iterate when attempting to do so. Any advice is much appreciated.

[GerdW]

Hi bigdaw,

why do you even want to use a TWL here?

Why not use a simple while loop and do synchronization to your DAQmx task in a different way (like queues)? DAQmx will determine the loop iteration rate much better than your Windows PC…