Measure Frequency/PWM with NI cDaq-9178 and NI 9403

[andre.makoski]

I need to measure the frequency of the digital signal with the range 0-5V, I am trying to use the NI cDaq-9178 and NI 9403 ( DIO only) for this purpose, but i could not do, I could see some example but I only found using NI hardware with counter´s but in my reasearch i could see that this two hardware don´t have, Its possible to do this using this method or I am doing in a wrong way?

[SlippinJimmy85]

As getting started, have a look here: https://forums.ni.com/t5/Counter-Timer/pulse-count-using-NI-9403-DIO-module/td-p/2177136 

[Kevin_Price]

Even simpler, to get started, try out some of the shipping examples for counters.

I don't do a lot of cDAQ stuff, but you'll find that:

1. your cDAQ chassis contains internal counters

2. those counters can interact with signals on your DIO module.  Counters can measure stuff coming into a DI channel or can send stuff out a DO channel that it generates internally.

3. the drop-down menus for specifying the cDAQ "terminal" to use for the measurement will let you self-discover the right syntax better than I can try to recite from memory.

The previous link will also get you to some good stuff, but it's more advanced.  It *does* illustrate a generic version of the channel and terminal syntax, but on your own system some of the names might be different.  Still, the pattern will at least be analogous (for channels: "Device/channel",  for terminals "/Device/signal".  Note the leading '/' forward slash in the terminal syntax.  But the drop-down menu will show you this too.)

-Kevin P

-Kevin P