• To change the boundary lines or name, select EditBoundary.• To edit the boundary alarm, select Alarm.Setting a Boundary AlarmBoundary alarms alert you when you are within a specifieddistance of a set boundary.1 Select Nav Info > Boundaries.2 Select a boundary.3 Select Alarm > On.4 Enter a distance.5 Select an option.• To set an alarm to sound when your boat is a specifieddistance from the boundary of an area that you want tostay within, select Exiting.• To set an alarm to sound when your boat is a specifieddistance from the boundary of an area that you want toavoid, select Entering.Deleting a Boundary1 Select Nav Info > Boundaries.2 Select a boundary.3 Select Edit Boundary > Delete.Stopping NavigationWhile navigating, from the Navigation or Fishing chart, selectan option:• Select Menu > Stop Navigation.• When navigating with Auto Guidance, select Menu >Navigation Options > Stop Navigation.Synchronizing User Data Across the GarminMarine NetworkNOTICEBefore you synchronize the user data across the network, youshould backup your user data to prevent possible data loss. SeeBacking Up Data to a Computer, page 38.You can share waypoints, tracks, and routes with all compatibledevices connected to the Garmin Marine Network (Ethernet)automatically.NOTE: This feature is not available on all models.Select Nav Info > Manage Data > User Data Sharing > On.If a change is made to a waypoint, track, or route on onechartplotter, that data is synchronized automatically across allchartplotters on the Ethernet network.Deleting All Saved Waypoints, Routes, andTracksSelect Nav Info > Manage Data > Clear User Data > All >OK.CombinationsThe Combination screen shows a combination of differentscreens at the same time. The number of options available onthe Combination screen depends on the optional devices youhave connected to your chartplotter and whether you are usingpremium maps.Selecting a Combination1 Select Combinations.2 Select a combination.Customizing a Combination ScreenNot all options are available on all chartplotter models.1 Select Combinations.2 Select a combination.3 Select Menu > Configure Combination.4 Select an option:• To change the name, select Name, and enter a newname.• To change what is shown, the number of windows, andthe layout, select Change Layout, and follow the on-screen instructions.• To change the data shown in the combination, select EditCombination, select the screen to change, and select thenew data.• To resize the windows, select Edit Combination, anddrag the arrows.• To customize the numbers shown on the screen, selectOverlay Numbers.5 Select Done.Adding a Custom Combination ScreenYou can create a custom combination screen to suit your needs.1 Select Combinations > Menu > Add.2 Follow the on-screen instructions.SonarWhen properly connected to an optional Garmin soundermodule and a transducer, your compatible chartplotter can beused as a fishfinder. Different sonar views can help you view thefish in the area.The adjustments you can make to each sonar view varydepending on the view you are in and the chartplotter model,sounder module, and transducer you have connected.Sonar ViewsThe sonar views available vary depending on the type oftransducer and optional sounder module connected to thechartplotter. For example, you can view the Split Frequencyview only if you have a dual-frequency transducer connected.There are four basic styles of sonar views available: a full-screen view, a split-screen view that combines two or moreviews, a split-zoom view, and a split-frequency view thatdisplays two different frequencies. You can customize thesettings for each view in the screen. For example, if you areviewing the split-frequency view, you can separately adjust thegain for each frequency.Traditional Sonar ViewThere are several full-screen views available, depending on theequipment connected.The full-screen Traditional sonar view show a large image of thesonar readings from a transducer. The range scale along theright side of the screen shows the depth of detected objects asthe screen scrolls from the right to the left.Combinations 15