Garmin GPSMAP 298C Owner's Manual - Page 81
x Zoom, Zoom View, Bottom Lock, Tools, A-scope, Color Bar, Temperature Graph, Split When Zoomed
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Zoom-sets a screen zoom scale. The following settings are available: • Off-turns off the Zoom function. • 2x Zoom--displays only the 2x zoomed picture on the full screen. • 4x Zoom--displays only the 4x zoomed picture on the full screen. • Btm (Bottom) Lock--displays only the Bottom Lock (returns from the bottom up) picture on the full screen. Zoom View-available when you select a Zoom scale other than Off. You can use the Zoom View setting to change the viewing range of a zoomed display. Auto follows the water bottom. If the display is Bottom Lock, the Span setting adjusts how far off the bottom the unit shows data. USING SONAR > SONAR PAGE Tools-controls the display of useful sonar tools. The following options are available: • A-scope-when you turn on A-scope, a vertical flasher bar appears on the far-right side of the screen. This flasher displays structure and bottom returns much the same as the Flasher Page. The horizontal width of the A-scope signal indicates the strength of the signal. • Color Bar-shows a gradient scale of the current Color Gain setting (see page 74). • Temperature Graph-appears only if you have a temperature-capable transducer. This setting toggles on or off the display of a temperature graph on the bottom of the Sonar Page, and it matches the scrolling data. Split When Zoomed-turns this option on or off. If you turn on Zoom, then this setting splits the screen. Swap Split-available on a split Sonar Page when you are using dual frequency. This switches on which side the frequencies appear. GPSMAP 292/298 Owner's Manual 75