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“Automatic” Zoom is especially helpful when looking
for structure or bottom detail. The “Automatic” Zoom
keeps the bottom in view even in quickly changing
terrain. “Manual” Zoom provides detailed information
of any area from the surface to the bottom.
In “Manual” Zoom, the Zoom range does not move as
the terrain changes. To operate Zoom, press MENU
repeatedly until the Zoom menu is on-screen. Three
options are available: “Off” (Factory Setting), “Auto”
(Automatic bottom tracking Zoom), and “Manual” (User
controlled Zoom range). Press the DOWN ARROW once
to highlight Auto or twice to highlight Manual. If
Manual is selected a submenu will appear allowing
manual zoom range adjustment. When the menu
disappears, full range information is displayed on the
right as always. The square box indicates the Zoom
range. In Auto Zoom, the box will move vertically to
remain in the general area of
the bottom return. The left
side of the screen is a
magnified view of the
information seen inside the
Zoom range box. The upper
and lower depth limits of the
Zoom range are shown on the
right side of the Zoom view.
Note: It is not possible to
use Zoom in conjunction
with the Large Digital
View.
To disable Zoom, press the MENU button until the Zoom menu is on-screen. Use
the UP ARROW to highlight Off, and let the menu time out.
When the unit is powered off, the Zoom menu returns to Zoom Off.
18
USING THE 405SX
MENU FUNCTIONS
Upper Zoom Limit
Lower Zoom Limit