AnsweredAssumed Answered

vrf Frequency calculation

Question asked by VRFuser on Oct 31, 2006
"Carver, John" <john_carver@tycoelectronics.com> wrote:
> I use VEE to monitor the output of a function generator via an oscope
> snapshot.  The oscope outputs the data in the form of a two
> dimensional array, time and voltage.  I have tried, unsuccessfully, to
> read the array and determine the varying frequencies that are
> occurring.  I would like to read the array and count the number of
> pulses at the various frequencies.  Any suggestions would be appreciated.  Thank you.

It isn't clear what you are trying to do, BUT I'll take a stab.
It sounds like what you want is to take the time domain waveform and determine frequency content. With lots of caveats about windowing effects and so on, what this needs is a Fourier Transform.
In VEE you would use fft().

Since this varies with time, presumably you would be looking for spectral content with each waveform then keeping track of this.

Or maybe you are looking at pulsed waveforms or even just counting pulses rather than actually looking at spectral content.

I'd suggest posting more information about what you are trying to do.
Someone here will almost certainly be able to help.

regards

Stan


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Stan Bischof  Agilent Technologies  707-577-3994  stan_bischof@agilent.com
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