User`s guide

Chapter 6 To Make Measurements RIGOL
DS1000Z User’s Guide
6-47
selected, the instrument will adjust the vertical scale to the best value according
to the current configration automatically.
 HORIZONTAL
POSITION and HORIZONTAL SCALE can also be
used to adjust the horizontal position and scale of the operation results.
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  Math  Operator to select “FFT” and set the parameters of FFT
operation.
Figure 6-1 FFT Operation
FFT vertical scale FFT sample rate Time domain waveform
FFT horizontal scale Frequency domain waveform