Fft - Rigol MSO2000A Series User Manual

Chapter 6 MATH and Measurements

FFT

FFT is used to quickly perform Fourier transform on specified signals and transform
time domain signals to frequency domain signals. MSO2000A/DS2000A oscilloscope
provides FFT operation function which enables users to observe the time domain
waveform and spectrum of the signal at the same time. FFT operation can facilitate
the following works:
Measure harmonic components and distortion in the system

Measure the characteristics of the noise in DC power

Analyze vibration

Press MATH  Operate to select "FFT" and set the parameters of FFT operation.
Vertical Amplitude Horizontal Scale FFT Sample Rate Center Frequency
1. Select Source
Press Source to select the desired channel (CH1 or CH2).
2. Select Window Function
Spectral leakage can be considerably decreased when a window function is used.
MSO2000A/DS2000A User's Guide
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Frequency Domain Waveform
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Time Domain Waveform
Figure 6-1 FFT Operation
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