Humminbird 405SX manual Bottom return. The left Side of the screen is a, Lower Zoom Limit

Upper Zoom Limit

USING THE 405SX

MENU FUNCTIONS

“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.

Lower Zoom Limit

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.

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