frequency measurement

[angelmcdoggie]

Dear Everyone,

I have a voltage vector data from my analog input voltage module.  How do I manipulate the FFT from CNiMath to compute for the frequency?  I am limited to this kind of module.  Plus it would be more convinient and scientific if I use this function or any similar function.  I don't want to use the manual method of computing frequency for number of samples / sampling rate. 

Thanks

[forexsystemprofi]

> I don't want to use the manual method of computing frequency for number of samples / sampling rate.

Why? Isn't it suitable?

[angelmcdoggie]

Hello!!!

I have a free running waveform and an auto program where i need to display the frequency.   My voltage module returns a set of voltage samples.

It is a painful procedure to search the start and end of a period plus pre-processing it.  In the end, I solved this by using FFT and few lines

of pre-processing.  Tested, verified and correlated and it works.

Thanks