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8-Advanced Function of Oscilloscope
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components and the final frequency contains 1024 points ranging from 0Hz to Nyquist frequency.
The following table describes the FFT menu:
Function Menu Setting Instruction
FFT
ON
OFF
Turn on FFT function
Turn off FFT function
Window
Rectangle
Blackman
Hanning
Hamming
Select window for FFT.
Format
dB
Vrms
Set Vrms as vertical scale unit
Set dBVrms as vertical scale unit
Zoom
×1
×2
×5
×10
Set multiple ×1
Set multiple ×2
Set multiple ×5
Set multiple ×10
Taking the FFT operation for example, the operation steps are as follows:
1. Press MENU key and the function menu appear on the right side of the screen.
2. Press MENU ▲ or MENU ▼ key to select FFT MODE. Five items selectable are available
at the bottom of the screen.
3. Press F1 to set ON. The green waveform F is shown in the screen after calculation.
4. Press F2 to switch over Window including Hamming, Rectangle, Blackman and Hanning.
5. Press F3 to switch over Format dB and Vrms.
6. Press F4 to zoom in or out the waveform, the magnification includes ×1, ×2, ×5, ×10.
7. Press
CHANNEL SETTING (red) ,
One of the following three prompts circularly will show at the bottom-left of the screen
when the format is dB.
▲/▼— CH Volts/Div
▲/▼ — FFT dB Scale
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