how can I generate pulse trains whenever the value of the gate changes?

[glenade]

I need to generate pulse train both at the rising edge and falling of the gate signal. My DAQ board has only two counters.

Have a nice day,

Jun

[Filipe A.]

Jun;

As your DAQ board has only two counters available, I'm assuming you are working with either one of the E-series board or SMIO boards.

If that is the case, your board doesn't have the capability of generating triggered pulse trains. And that is what you need.

You will need to use the 660x family instead. Those boards have the trigger pulse train capability. Regarding the second part of your application; none of the DAQ boards has the capability of triggering a pulse train generation at both rising and falling edges of the same trigger pulse. You can configure either as rising or falling edge of the trigger pulse. Then, to accomplish wath you need, you will need to configure two counters, both having the same trigger pulse triggering a pulse train gen
eration, and one configured to trigger the pulse train at the raising edge of the trigger pulse and the other to trigger at the falling edge of the trigger pulse; then have an external OR Gate which the two inputs are the outputs of those two counters.
Hope this helps.

Filipe