How to isolate the channels when use one counter to generate pulses to different channels

[ossoo]

I want to use one counter to generate pulses to different channels consecutively. For example, first connect ctr1 to PFI0 to genrate pulses; then connect the same ctr to PFI 1 to give PFI1 pulses and keep PFI0 at 0V.

But when I do this, it seems PFI1 and PFI0 are connected together - 80 ohm in between.  PFI 0 is affected when PFI is generating pulses.

How to reset the counter to isolate the two channels? Because I need the PFI0 to keep at 0 when PFI 1 is generating pulses.

Thanks,

ossoo

[Carlos_O]

Hi ossoo,

I'm assuming that the DAQ device you are using has more than one counters. What I would try first is creating two tasks using different counters, that way you can start a pulse generation task, use the pulses the way you need them, to finally stop the task and start the second task in the same way.

I hope this helps! Please let me know if there is anything I can help or clarify.

Best Regards

Carlos O

Applications Engineer

National Instruments