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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.
Depth Alarm. The 425SX contains an audible
alarm to warn you of shallow water depths. The
alarm is adjustable to depths of .6m (2') to 30m
(99'). When the alarm is enabled, an audible alarm
sounds if the water beneath the boat is equal to or
less than the selected alarm depth. The alarm
sounds continuously for about five seconds, and
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USING THE 425SX
MENU FUNCTIONS
Upper Zoom Limit
Lower Zoom Limit