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Table 1 Horizontal Menu choices
The axis for vertical scale is the ground level. A readout near the top right of the screen displays
the current horizontal position in seconds. An M indicates the Main time base and a W indicates
the Window time base.
The oscilloscope also indicates horizontal position with an arrow icon at
the top of the display.
Use the Window Zone option to define a segment of a waveform to see more detail. The
Window time base setting cannot be set slower than the Main time base setting. Choosing
Window expands the Window Zone to cover the entire screen. When you change between the
Main, Window Zone, and Window views, the oscilloscope erases any waveform saved on the
screen.
Math Menu
Pushing the red Math Menu button activates a red trace on the display and a softkey menu that
allows various waveform math operations to be performed on the input signal(s). Pushing Math
Menu again will remove the red trace. The <Operation> softkey allows the user to select: FFT
(displays flat line at 0 V) options.
a) + which adds/sums the CH1 and CH2 displays,
b) – which calculates the difference between the CH1 and CH2 displays with subchoices of
CH1-CH2 or CH2-CH1, and
c) FFT with subchoices on shown in Table 2.
Dr. Montoya Rev. 3/16/09
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