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SIGLENT
SDS1000L User Manual 23
Table 2-8 FFT function menu 1:
FFT Option Setting
Introduction
Source CH1, CH2
Select this channel as the FFT source.
Window
Hanning
Hamming
Rectangular
Blackman
Select FFT window types.
FFT ZOOM
1X
2X
5X
10X
Changes the horizontal magnification of
the FFT display.
Next Page Page 1/2
Enter the second page of FFT menu.
Table 2-9 FFT function menu 2:
FFT Option Setting
Introduction
Vrms
Set Vrms to be the Vertical Scale unit.
Scale
dBVrms
Set dBVrms to be the vertical Scale unit.
Display
Split
Full screen
Display FFT waveform on half screen.
Display FFT waveform on full screen.
Next Page Page 2/2
Return the first page of FFT menu.
To use the Math FFT mode, you need to perform the following tasks:
1. Set up the source (time-domain) waveform.
● Press the AUTO button to display a YT waveform.
● Turn the vertical “POSITION” knob to move the YT waveform to the center
vertically (zero divisions).
● Turn the horizontal “POSITION” knob to position the part of the YT waveform
that you want to analyze in the center eight divisions of the screen.
The oscilloscope calculates the FFT spectrum using the center 1024 points of
the time-domain waveform.
● Turn the “Volts/div” knob to ensure that the entire waveform remains on the
screen.
● Turn the “S/div” knob to provide the resolution you want in the FFT spectrum.
● If possible, set the oscilloscope to display many signal cycles.
To display FFT correctly, follow these steps:
1. Push the “MATH” button.
2. Set the “Operation” option to FFT.
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