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MEASUREMENT
71
5. Press the Window key from the side
menu and select the window type.
Range
Hanning, Hamming, Rectangular,
and Blackman.
6. The FFT result represents the frequency-
domain representation of a signal. Hence, the
horizontal scale changes from time to
frequency, and the vertical scale from
voltage/current to dB/RMS.
Math
Source
Position and
Scale
To move the FFT waveform vertically,
press Vertical until the Div parameter
is highlighted and then use the
Variable knob.
Range
–12.00 Div ~ +12.00 Div
To select the vertical scale of the FFT
waveform, press Vertical until the dB
or voltage parameters are highlighted
and then use the Variable knob.
Range
2mV~1kV RMS (Linear RMS),
1~20 dB (dB VRMS)
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