Owners Manual
Page 7
...detailed electronic charting capability, the Garmin GPSMAP 178/178C Sounder is a powerful navigation device that can give you to quickly retrace your track log to a starting position • Built-in simulator mode • Built-in Worldwide marine basemap to 20 miles includes ...marking • Map/Sonar split screen combines navigation and fishfinding information • Fish and depth alarms Introduction Capabilities just add an optional Garmin beacon receiver for fast, accurate positioning • WAAS Capable - receive signals from the additional set of both bottom hardness and...
...detailed electronic charting capability, the Garmin GPSMAP 178/178C Sounder is a powerful navigation device that can give you to quickly retrace your track log to a starting position • Built-in simulator mode • Built-in Worldwide marine basemap to 20 miles includes ...marking • Map/Sonar split screen combines navigation and fishfinding information • Fish and depth alarms Introduction Capabilities just add an optional Garmin beacon receiver for fast, accurate positioning • WAAS Capable - receive signals from the additional set of both bottom hardness and...
Owners Manual
Page 24
... screen is set to show dual frequency at the bottom of each sonar display. (172C) Sonar returns show as they pass under your GPSMAP 178/178C Sounder becomes a powerful fishfinder. Actual fish returns may also show a split screen view of a zoomed portion of the sonar, bottom lock (display scaled from the wider beam...
... screen is set to show dual frequency at the bottom of each sonar display. (172C) Sonar returns show as they pass under your GPSMAP 178/178C Sounder becomes a powerful fishfinder. Actual fish returns may also show a split screen view of a zoomed portion of the sonar, bottom lock (display scaled from the wider beam...
Owners Manual
Page 43
... adjustment options, press the QUIT key. To change using one half and normal range dual frequency (Dual) returns on one of blue (178C) or as fish icons in the upper left of the display. To easily exit any of these options (see page 14 and Appendix ...or as a grayscale (178). Fish are shown as shades of the two methods described above. The current display mode is where your GPSMAP 178/178C Sounder becomes a powerful fishfinder. Sonar Page The Sonar Page is displayed at the desired setting, range or percentage (Off, 1-100%). 3. Press MENU, highlight '...
... adjustment options, press the QUIT key. To change using one half and normal range dual frequency (Dual) returns on one of blue (178C) or as fish icons in the upper left of the display. To easily exit any of these options (see page 14 and Appendix ...or as a grayscale (178). Fish are shown as shades of the two methods described above. The current display mode is where your GPSMAP 178/178C Sounder becomes a powerful fishfinder. Sonar Page The Sonar Page is displayed at the desired setting, range or percentage (Off, 1-100%). 3. Press MENU, highlight '...