read pulse

[heang]

Hello
 I am doing digital line acquisition of falling edge of another digital pulse. Thus i need consistent digital pulse, while the digital pulse clock out at the falling edge of digital pulse.
Using USB 6008, it seems ridiculous to create digital pulse of consistent pulse width. However, for initial stage, i use it to create digital pulse. what my problem is, how to acquire data only at the only falling edge of another digital pulse?

thanks

regards

[Wallace_F]

Hello heang,

It appears that you are trying to use the falling edge of a digital pulse to trigger digital line acquisition with a NI USB-6008.  Unfortunately, the digital i/o lines of the USB-6008 only support static or software timed digital i/o, and you would not be able to trigger digital acquisition with an external timing signal.

Best wishes,

Wallace F.