User`s guide

6 To Make Measurements RIGOL
DS2000 User’s Guide
6-5
FFT
FFT is used to quickly perform Fourier transform on specified signals and transform
time domain signals to frequency domain signals. 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.
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.
DS2000 provides four kinds of FFT window functions which have different
characteristics and are applicable to measure different waveforms. You need to
select the window function according to different waveforms and their
Frequency Domain Waveform
Time Domain Waveform
Vertical Amplitude Horizontal Scale FFT Sample Rate Center Frequency