User manual

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5. The FFT result appears. The horizontal scale changes from time to frequency,
and the vertical scale from voltage to dB or RMS.
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 select the vertical scale of an FFT
rms waveform, use the VOLTS/DIV knob
to change the vertical scale. The scale
will be shown in the Vertical soft-key.
VOLTS/DIV
Range Volts/Div
9. To zoom in on the FFT/FFT rms
waveform, press Zoom repeatedly until
X is selected. Use the Variable knob to
change the Zoom level.
Zoom
1X
0.0000Hz
VARIABLE
Range 1/2/5/10/20X