User Guide

RIGOL
DS6000 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. Use FFT to facilitate the following
works:
 Measure harmonic components and distortion in the system
 Measure the characteristics of the noise in the DC power
 Analyze vibration
Press MATH  Operate to select “FFT” and set the parameters of FFT operation.
*Note: “Center frequency” refers to the frequency of the frequency domain waveform
corresponding to the horizontal center of the screen (the frequency at the position
marked by CurA in the figure above).
1. Source Selection
Press Source to select the desired channel. The channels available are CH1,
CH2, CH3 and CH4.
Frequency Domain Waveform Time Domain Waveform
Vertical Amplitude Horizontal Scale FFT Sample Rate Center Frequency*