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Pulse train generation using NI 9403

Hi all,

 

I have to generate pulse trains using cDAQ 9178 and NI 9403 DIO module. I want to out pulse train on two lines (line 0 and line 1) after selecting lines on Front panel ( a boolean switch maybe). So far I have written a program to generate pulse train on single line. I am not able to reduce the period below 2 ms.

(1) How to output pulse trains on two lines (one at a time)? The line selection should be done on front panel. I used case structure but then even single channel won't output.

(2) Why do the cycle period limits at 2 ms? Is there some mistake in my code? I tried using wait(ms) function but same result.

 

 

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