Counter/Timer

[Konrado]

The situation is the following:

A rotating system generates a TTL signal by a light barrier which is connected to Ctr 1 Gate.

Is it possible to

- generate a digital finite pulse train with digital start (rising edge on Ctr 1 Gate)

- measure the pulse width (for rpm calculation)

at the same time?

Any help appreciated,

Konrado

[Kevin_Price]

It depends on your data acq board.  Many boards require 2 counters paired together to produce a finite pulse train.  And the other measurement (pulse width, period, freq, whatever) would require a 3rd counter.

This is true for all E-series and M-series MIO boards, which also only have 2 counters available.   It's also true for 660x counter/timer boards but they have either 4 or 8 counters available.  Finally, the newer X-series boards can produce a finite pulsetrain with only 1 counter, so you could do both tasks with 2.  Plus, they provide you with 4 anyway.   I'm less familiar with the cDAQ hw, but some of it is based on the same timing chipset as the X-series and might also work for your 2 tasks.

-Kevin P