MEASUREMENT
97
4. Press the Vertical Units key from
the side menu to select the vertical
units used.
5. Press the Window key from the side
menu and select the window type.
Hanning, Hamming, Rectangular,
and Blackman.
6. The FFT result appears. For FFT, the horizontal
scale changes from time to frequency, and the
vertical scale from voltage/current to dB/RMS.
To move the FFT waveform vertically,
press Vertical until the Div parameter
is highlighted and then use the
Variable knob.
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.