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Taking FFT of Oscilloscope Based Data

Started by matlab_fft April 12, 2010
Hi guys,

I am new to DSP related stuff, I have been trying to take the FFT of data taken from oscilloscope. It consisted of 2 Million points, it has two vector one for Magnitude and one for Time. I don't now how to start as I don't know the Sampling Frequency of the signal. As long as I remember that data has frequency of 83K to 94K Hz but not sure. How can I see the frequency response of this signal and how can I map the magnitude with respect to the time vector.

I will appreciate any quick response.

BR,
B