I am trying to measure 8 separate frequencies with a FP-CRT-502 module.

[jwmcclure]

I have a FP-CRT-502 module and need to measure 8 frequencies. The examples I've found through NI allow for 7 measurements (with one channel being used to generate a gating pusle). I found something from NI indicating that this can be done but it did not give much detail. Does anyone know how this is done? Thanks

[vg]

Hello,

The example uses one of the counter modules to generate the KNOWN pulse signal for the gate (by using the counter clock). You know the width (time) of the pulses on the gate.

If you have a device that generates a known pulse signal you can use this signal as the gate signal for all of the counter channels and then determine the frequency (freq = pulses/time).

This device can be another FP Counter module or some other type of device that generates accurate pulses.

I hope this helps.

VG