I'm need to count pulses having 2V amplitude, 15ns width (device spec sheet, pg2). My DAQ board is similar to NI-6356. The NI 6356 spec sheet doesn't say what kind of signals it counts but I assume it's TTL. The 2V pulse amplitude I need to count is below TTL signal level I believe. Is it possible to count these pulses with the 6356? If not, what do I need?
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