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Adjusting the Sonar Page
The Adjustment Menu allows direct access to the settings and
features most commonly used on the Sonar page. There are ten main
adjustment options available: Range, Zoom, View, Gain, Target
Level, Whiteline, Frequency, Depth Line, Noise Reject, and Scroll.
Use the Rocker and ENTER keys to make all adjustments. The
currently selected option appears in the upper left corner.
To select an adjustment option:
Use one of the following methods to select an adjustment option:
• Press the Rocker key right or left to scroll through the
adjustment options. When the desired adjustment option is
displayed, press ENTER.
• Press MENU, highlight Adjustments, and press ENTER.
Use the Rocker key to highlight the desired adjustment and
press ENTER.
Once you have selected an adjustment option, press the Rocker key
Up or Down to change the setting.
You may also press
MENU and highlight the desired shortcut setting
to quickly change to commonly used settings/values.
Press ENTER to accept the new setting (or press QUIT to cancel)
and return to the Sonar page.
Adjustment Options
Sonar Adjustments
Scroll—adjusts the rate that the sonar display scrolls from right to
left. If you are sitting still or the sonar display is moving too fast,
slow the scroll rate or pause the scrolling.
Range—sets the display depth range used for viewing. The unit can
be set to automatically track the bottom or set to a user-specified
depth range.
Zoom—used to quickly select a display zoom scale or to split
the display. When a scale other than No Zoom is selected, the
Adjustment Menu displays a new selection labeled View or Span.
The Zoom function is divided into six display levels:
GPSMAP 276C Owner’s Manual 93
SETTING UP AND USING SONAR > USING THE SONAR PAGE