68 Agilent InfiniiVision 2000 X-Series Oscilloscopes User's Guide
4 Math Waveforms
See Also • "Units for Math Waveforms" on page 65
Math Transforms
Math transforms perform a transform function (FFT) on an analog input
channel or on the result of an arithmetic operation.
• "FFT Measurement" on page 68
FFT Measurement
FFT is used to compute the fast Fourier transform using analog input
channels or an arithmetic operation g(t). FFT takes the digitized time
record of the specified source and transforms it to the frequency domain.
When the FFT function is selected, the FFT spectrum is plotted on the
oscilloscope display as magnitude in dBV versus frequency. The readout
for the horizontal axis changes from time to frequency (Hertz) and the
vertical readout changes from volts to dB.
Figure 6 Example of Multiply Channel 1 by Channel 2
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