Frequency spacing needs to be embedded in data stream
- From: "ilter" <ilteriskoc@xxxxxxxxx>
- Date: 2 May 2006 07:45:17 -0700
Dear All,
I am acquiring analog signal and I am using 'filtering' , 'tone
measurements' , 'fft' express vi's.
I realized that fft found a peak frequency of a value which is 1000
times lower than the actual frequency. In my vi sampling rate is 1000
Hz, number of samples to be acquired is 1000. Looking at some examples
I figured out that I need the frequency spacing information.
Using 'build cluster' I merged FFT output with sampling rate and
resulting plot looked correct.
But this does not solve my problem, since I need to have the dynamic
data stream to be 'correct'. I need to find the frequency of a
different signal using 'tone measurements' express vi which currently
is giving a 1000 times lower value . I also want to use filtering vi,
which does work properly under this condition.
Any suggestion will be more than appreciated.
Regards,
ilter
.
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