Garmin GPSMAP 820 Owner's Manual - Page 8

NOTE: In order for the software update instructions to appear, the device must be fully booted before the card is inserted. 3 Follow the on-screen instructions. 4 Wait several minutes while the software update process completes. The device returns to normal operation after the software update process is complete. 5 Remove the memory card. NOTE: If the memory card is removed before the device restarts fully, the software update is not complete. GPS Satellite Signals When you turn on the chartplotter, the GPS receiver must collect satellite data and establish the current location. When the chartplotter acquires satellite signals, appears at the top of the Home screen. When the chartplotter loses satellite signals, disappears and a flashing question mark appears over on the chart. For more information about GPS, go to www.garmin.com / aboutGPS. Setting the Vessel Type You can select your boat type to configure the chartplotter settings and to use features customized for your boat type. 1 Select Settings > My Vessel > Vessel Type. 2 Select Powerboat or Sailboat. Adjusting the Backlight 1 Select Settings > System > Display > Backlight. TIP: Press from any screen to access the backlight settings. 2 Select an option: • Adjust the backlight level. • Select Auto Backlight or Auto. Adjusting the Color Mode 1 Select Settings > System > Display > Color Mode. TIP: Press from any screen to access the color settings. 2 Select an option. Customizing the Home Screen You can add items to and rearrange items on the Home screen. 1 From the Home screen, select Customize Home. 2 Select an option: • To rearrange an item, select Rearrange, select the item to move, and select the new location. • To add an item to the Home screen, select Add, and select the new item. • To remove an item you have added to the Home screen, select Remove, and select the item. Charts and 3D Chart Views The charts and 3D chart views that are available depend on the map data and accessories used. You can access the charts and 3D chart views by selecting Charts. Navigation Chart: Shows navigation data available on your pre-loaded maps and from supplemental maps, if available. The data includes buoys, lights, cables, depth soundings, marinas, and tide stations in an overhead view. Perspective 3D: Provides a view from above and behind the boat (according to your course) and provides a visual navigation aid. This view is helpful when navigating tricky shoals, reefs, bridges, or channels, and is beneficial when trying to identify entry and exit routes in unfamiliar harbors or anchorages. Mariner's Eye 3D: Shows a detailed, three-dimensional view from above and behind the boat (according to your course) and provides a visual navigation aid. This view is helpful when navigating tricky shoals, reefs, bridges, or channels, and when trying to identify entry and exit routes in unfamiliar harbors or anchorages. NOTE: Mariner's Eye 3D and Fish Eye 3D chart views are available with premium charts, in some areas. Fish Eye 3D: Provides an underwater view that visually represents the sea floor according to the chart information. When a sonar transducer is connected, suspended targets (such as fish) are indicated by red, green, and yellow spheres. Red indicates the largest targets and green indicates the smallest. Fishing Chart: Provides a detailed view of the bottom contours and depth soundings on the chart. This chart removes navigational data from the chart, provides detailed bathymetric data, and enhances bottom contours for depth recognition. This chart is best for offshore deep-sea fishing. NOTE: The offshore Fishing chart is available with premium charts, in some areas. Radar Overlay: Superimposes radar information on the Navigation chart or the Fishing chart, when the chartplotter is connected to a radar. This feature is not available with all models. Navigation Chart and Offshore Fishing Chart NOTE: The offshore Fishing chart is available with premium charts, in some areas. The Navigation and Fishing charts allow you to plan your course, view map information, and follow a route. The Fishing chart is for offshore fishing. To open the Navigation chart, select Charts > Navigation Chart. To open the Fishing chart, select Charts > Fishing Chart. Zooming In and Out of the Chart The zoom level is indicated by the scale number at the bottom of the chart. The bar under the scale number represents that distance on the chart. • Select to zoom out. • Select to zoom in. Panning the Chart with the Keys You can move the chart to view an area other than your present location. 1 From the chart, use the arrow keys. 2 Select BACK to stop panning and return the screen to your present location. Selecting an Item on the Map Using the Device Keys 1 From a chart or 3D chart view, select , , , or to move the cursor. 2 Charts and 3D Chart Views