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Oscilloscope Mode (cont'd)
Horizontal unit
Vertical unit
Graphic
representation
IV - 72
FFT with a Hanning window and a log
scale
This is indicated instead of the time base and is calculated according to the
scanning coefficient:
Unit (in Hz/div.) =
Two possibilities are offered by the sub-menus:
a) Linear scale:
• in V/div. =
b) Logarithmic scale:
• in dB/div. =
The vertical position indicator of the representation is at -40 dB.
The FFT representation indicates symmetry in relation to the frequency
origin; only positive frequencies are displayed.
Oscilloscope Mode - The "Horizontal" Menu
Square signal
FFT with a rectangular window and a
12.5
scanning coefficient
by selecting the FFT menu and then the linear scale
unit of the signal in its time representation (V/div.)
by selecting the FFT menu and then
log scale (logarithmic)
by assigning 0 dB to a signal with an effective
amplitude of 1 in the time representation
linear scale
2
SCOPIX Oscilloscopes
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