Hi Mogdog,
There are several ways of generating a pulse voltage from separate boards. We have some examples available and you can find them using the NI Example Code Library. In order for me to give you a more detailed description on how to do this I need more information about your system setup: What devices are you using? How is your system setup? Please include a more detailed description of what you are trying to do so that I can help you better.
Thanks
Tica T
Applications Engineer
National Instruments
