43
3-4-3. Using the FFT function
Procedure
1. Press the Math key.
MATH
2. Press
Operation
repeatedly
to select FFT.
Operation
FFT
3. Press
Source
repeatedly to
select the source channel.
Source
CH1
4. Press
Window
repeatedly to
select the FFT window type.
Window
Hanning
5. The FFT result appears. The horizontal scale
changes from time to frequency, and the
vertical scale from voltage to dB.
6. To move the FFT waveform
vertically, press
Vertical
repeatedly until Div is
selected. Use the Variable
knob to change the vertical
scale.
Vertical
2V
0.00 Div
VARIABLE
Range
–12.00 div ~ +12.00 div
7. To select the vertical scale
of an
FFT waveform
, press
Vertical
repeatedly until dB
is selected. Use the Variable
knob to change the vertical
scale.
Vertical
1 dB
0.00 Div
VARIABLE
Range
1, 2, 5, 10, 20 dB/Div
8. To clear the FFT result from
the display, press the Math
key again.
MATH
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