Garmin GPSMAP 178C Owner's Manual

Also see for GPSMAP 178C: Specifications Flush Mount Template Manual Owner's manual

Contents

Garmin GPSMAP 178C Owner's Manual Manual pdf 47 page image

37ReferenceSonar Page Options‘Show Pointer’ option enabledData WindowPointer‘Show Numbers’option enabled• Show/Hide Pointer — allows you to reference sonar items and mark underwater waypoints.This makes it easier to find and use an object such as a stump for a future fishing location. Whenusing this feature, the Sonar Page pauses. The pointer does not move off the paused display andcannot show an area that has scrolled off the screen. The depth is updated while the display ispaused, but the unit does not show any new sonar data until the standard Sonar Page is resumed.You may see a discontinuity from where the sonar information stops to where it starts again.To mark an underwater waypoint:1. From the Sonar Page, press MENU, highlight ‘Show Pointer’ and press ENTER to pause the screenmovement.2. Use the ARROW KEYPAD to move the cursor onto the target (underwater drop off, stump, etc.)you want to mark. The data window at the top of the screen displays the cursor’s depth, coordi-nates, and bearing and distance from your current position.3. Press ENTER/MARK. The New Waypoint page appears with the waypoint’s coordinates, defaultthree-digit name, and pointer depth automatically filled in.4. To change the name, symbol or depth, highlight the appropriate field and press ENTER. Make yourchanges and press ENTER when done.5. When done, move the fi eld highlight back to the ‘OK’ prompt and press ENTER.6. To return to the standard Sonar Page, press QUIT; or press MENU, then highlight ‘Hide Pointer’and press ENTER.• Show/Hide Numbers — toggles showing/hiding the data fields on the sonar display.• Size Split — enables width adjustment of the Sonar Page split screen. This option is onlyavailable when a split screen zoom scale is selected. You may adjust the size of the split windowanywhere from 1/4 to 3/4 width of the right half of the Sonar Page.To resize the Sonar Page split screen:1. From the Sonar Page split screen, press MENU.2. Using the ARROW KEYPAD, highlight ‘Size Split’ and press ENTER.