Resizing the Split ScreenYou can adjust the way the split screen appears. This option is onlyavailable when a zoom scale other than No Zoom is selected.To resize the Sonar Page split screen:1. From the Sonar Page split screen, press MENU.2. Highlight Size Split, and press ENTER.3. Move the horizontal double-arrow left or right using theROCKER until the vertical width line shows, then pressENTER.4. If you want to cancel this operation, press QUIT or pressMENU, highlight Stop Resizing, and press ENTER.Using the Pointer on the Sonar PageYou can show the pointer (arrow) to reference sonar items andmark underwater waypoints. This makes it easier to find and usean object such as a stump for a future fishing location. When usingthis feature, the Sonar Page pauses. The depth continues to updatewhile the display is paused, but the unit does not show any newsonar data until the Sonar Page resumes scrolling. You might see adiscontinuity from where the sonar information stops and where itstarts again.To mark an underwater waypoint:1. From the Sonar Page, press MENU, highlight Show Pointer,and press ENTER.2. Use the ROCKER to move the pointer to the location youwant to mark. Press ENTER. The New Map Waypoint Pageopens.3. To change the name, symbol or depth, highlight theappropriate field, and press ENTER. Make your changes,and press ENTER.4. When you are done making changes, highlight OK, andpress ENTER.5. To return to the standard Sonar Page, press QUIT; or pressMENU, highlight Hide Pointer, and press ENTER.GPSMAP 378/478 Owner’s Manual 107settIng uP And usIng sonAr > usIng the sonAr PAge
