Fft - Rigol MSO4000 User Manual

6 To Make Measurements

FFT

The FFT is used to quickly perform a Fourier transform on the 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.
Note: LA bus display functions will be automatically turned off and disabled after
selecting the FFT operation.
Vertical Amplitude Horizontal Scale FFT Sample Rate Center Frequency
1. Select Source
Press Source to select the desired channel. The channels available are CH1,
CH2, CH3 and CH4.
2. Select Window Function
Spectral leakage can be considerably decreased when a window function is used.
MSO4000D/S4000 User's Guide
Frequency Domain Waveform
RIGOL
Time Domain Waveform
6-5