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shown on the right side of the display. Zoom can either operate automatically, in which the Zoom
range is constantly adjusted to show the bottom, or manually, in which the user controls the
location of the Zoom range.
"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. When the menu
disappears, the graphics area of the screen will be divided in
half. Full range information on the right, Zoom information on
the left. The digital depth readout is unaffected by Zoom.
Pressing the DOWN ARROW again to highlight "Manual"
activates Manual Zoom. The menu further expands to show
the current Zoom range, and allows user adjustment of this
range.
When the range is shown in the menu, the upper number represents the
top of the current Zoom range. The lower number represents the bottom
of the Zoom range. The UP and DOWN ARROW buttons can be used to
move this range. The upper number can never be less than 0 (the
surface of the water), and the lower number can never be greater than
the active depth range. The difference between the two numbers (the
Zoom range) is preset and determined by the active depth range.
Once "Manual" Zoom is selected, the display will appear the same as in
"Auto" Zoom, but the zoom range does not change automatically. If
further adjustment of the zoom range is necessary, pressing either
ARROW button while Zoom is active will move the Zoom range up or
down. The Menu returns briefly to show the numeric values as the
adjustment is made.
To disable Zoom, press the MENU button until the Zoom menu is on-
screen. Use the UP ARROW to highlight Oft, and let the menu time out.
When the unit is powered oft, the Zoom menu returns to Zoom Off.