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DAQmx -CO Tick Single Pulse Generation- fails sometime

Hello All,

I was trying to generate a single pulse generator with external clock pulse and Start Digital Edge. See the attachement VI

 

Everytime when I a command is given I will call this subVI to generate a Single Pulse of said duration(Ticks) from the reference pulse (Start Digital Edge).

But while running this, I had noticed that some times the Counter Output fail to generate a pulse,  say 1 in 3 times.. But if I remove the Start Digital Edge VI ,its working fine for every events. I am very sure the Trigger Pulse is not missing because 'Z' pulse from encoder is wired as trigger input.

 

What could be the reason why I CO fails to generate the pulse?.

Many thanks in Advance..

 

Thanks

 

 

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