Figure 2-18 MATH Waveform addition
FFT Spectral analysis
Use FFT (Fast Fourier Transform) to transform a time domain (YT) signal into a
frequency component (frequency spectrum). The following types of signals can be
observed at FFT mode:
Analyze harmonic wave in the power cord.
Measure the harmonic wave component and distortion in the measurement
system.
Analyze the noise characteristics in a DC power supply.
Test the pulse response of the system.
Analyze vibration.
Table 2-8 Page 1 of the function menu FFT:
FFT Option Setup Description
Signal source
CH1
CH2
Select CH1or CH2 as signal source
Window
Hanning
Hamming
Rectang
Blackman
Select window type FFT
Horizontal
amplification
1×
2×
5×
10×
Change the horizontal amplification factor of
FFT result waveform
Waveform operation
Result identification