Adjusting the Sonar PageThe Adjustment Menu allows direct access to the settings andfeatures most commonly used on the Sonar page. There are ten mainadjustment options available: Range, Zoom, View, Gain, TargetLevel, Whiteline, Frequency, Depth Line, Noise Reject, and Scroll.Use the Rocker and ENTER keys to make all adjustments. Thecurrently 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 theadjustment options. When the desired adjustment option isdisplayed, press ENTER.• Press MENU, highlight Adjustments, and press ENTER.Use the Rocker key to highlight the desired adjustment andpress ENTER.Once you have selected an adjustment option, press the Rocker keyUp or Down to change the setting.You may also press MENU and highlight the desired shortcut settingto 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 OptionsSonar AdjustmentsScroll—adjusts the rate that the sonar display scrolls from right toleft. 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 canbe set to automatically track the bottom or set to a user-specifieddepth range.Zoom—used to quickly select a display zoom scale or to splitthe display. When a scale other than No Zoom is selected, theAdjustment Menu displays a new selection labeled View or Span.The Zoom function is divided into six display levels:GPSMAP 276C Owner’s Manual 93SETTING UP AND USING SONAR > U SING THE SONAR PAGE
