Using Fft Function - PeakTech 1190 Bedienungsanleitung

Fig. 26 Wave Form resulted from CH1 +CH2 Mathematical Manipulation

22. Using FFT function

An FFT breaks down signals into component frequencies, which the oscilloscope uses to display a graph of
the frequency domain of a signal, as opposed to the oscilloscope's standard time domain graph. You can
match these frequencies with known system frequencies, such as system clocks, oscillators, or power
supplies.
FFT in this oscilloscope can transform 2048 points of the time-domain signal into its frequency components
and the final frequency contains 1024 points ranging from 0Hz to Nyquist frequency .
The following table describes the FFT menu:
Function Menu
FFT
Source
Window
Format
Zoom
Setting Instruction
ON Turn on FFT function.
OFF Turn off FFT function.
CH1 Select CH1 as FFT source.
CH2 Select CH2 as FFT source.
Rectangle
Blackman
Select window for FFT.
Hanning
Hamming
dB Select dB for Format.
Vrms Select Vrms for Format.
*1 Set multiple *1.
*2 Set multiple *2.
*5 Set multiple *5.
*10 Set multiple *10.
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