Fft - Rigol MSO4000 Series User Manual

Chapter 6 Operations and Measurements

FFT

The FFT (Fast Fourier Transform) operation can transform time domain signals to
frequency domain signals (frequency spectrum). FFT operation can facilitate the
following works:



MSO4000/DS4000 provides the FFT operation function which enables users to view
the time domain signal and frequency spectrum at the same time, as shown in the
figure below.
FFT Vertical Scale
You can perform the FFT operation following the steps below.
1. Select the FFT operation
MSO4000/DS4000 User's Guide
800.544.2843
Measure the harmonic components and distortion in the system
Measure the characteristics of the noise in DC power
Analyze the vibration
Frequency Domain Waveform
FFT Sample Rate
FFT Horizontal Scale
Press MATH  Operate, turn the multi-function knob
press the knob. You can also press Operate continuously to switch to the "FFT"
operation.
www.calcert.com
15
10 20
5 25
0 30
Time Domain Waveform
Center Frequency
Figure 6-1 FFT
RIGOL
to select "FFT" and
6-5
sales@calcert.co