GPSMAP® 5000 Series Owner’s Manual 5Using RadarUSinGradarUnderstanding the Cruising ScreenUse the Cruising screen to view a full-screen image of the gathered radar information. Your positionis in the center of the screen, and the rings provide distance measurements.Radar - Cruising ScreenRange ringsHeading lineZoom scaleThe zoom scale represents the distance from your position (the center) to the outermost ring. Eachring represents an even division of the zoom scale. For example, if the zoom scale is set at threemiles, each ring represents one mile from the center out. Adjust the zoom scale by touching theand buttons.Cruising Screen SettingsTo access additional settings or options for the radar cruising screen, touch Menu.Gain—controls the sensitivity of the radar receiver. The default setting, Auto, adjusts automaticallyto provide optimal performance. Touch up or Down (or drag the adjustment bar) to manually adjustthe gain. Touch Auto to return the gain to the default setting.Rain Cltr—adjusts the gain for unwanted clutter caused by rain at close ranges. Touch up orDown (or drag the adjustment bar) to adjust the rain clutter sensitivity.Sea Cltr—adjusts the gain for clutter caused by choppy sea conditions. Touch Nxt Prset to cyclebetween Rough, Medium, Calm, or off. Touch up or Down (or drag the adjustment bar) tomanually adjust the sea clutter sensitivity.Guard Zone—defines a safe zone either fully or partially surrounding your boat. An alarm soundswhen a detected object enters this zone. Touch on or off. If the guard zone is on, you can define theboundaries by touching Adjust Guard Zone:Corner 1 (and Corner 2): Touch Corner 1, and then touch the point on the screen where youwant the first corner of the guard zone. Repeat this with Corner 2.Circular: Joins the guard zone to completely encompass the boat. Touch Corner 1 or Corner 2to adjust the size.Corner Corner 2 Circular••••Distancebetween rings