Garmin GPSMAP 800 Series Owner's Manual
Also see for GPSMAP 800 Series: Installation manualPilot's guide addendumOwner's manualQuick start manualOwner's manual
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Contents
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Enabling a Guard ZoneFrom the sentry screen, select MENU > Sentry Setup >Enable Guard Zone.Defining a Circular Guard ZoneBefore you can define the boundaries of the guard zone, youmust enable a guard zone (Enabling a Guard Zone).You can define a circular guard zone that completelyencompasses your boat.1 From the sentry screen, select MENU > Sentry Setup >Adjust Guard Zone > Move Radar Guard Zone > Circle.2 Select the location of the outer guard zone circle.3 Select the location of the inner guard zone circle to define thewidth of the guard zone.Defining a Partial Guard ZoneYou can define the boundaries of a guard zone that does notcompletely encompass your boat.1 From the sentry screen, select MENU > Sentry Setup >Adjust Guard Zone > Move Radar Guard Zone > Corner 1.2 Touch and drag the location of the outer guard-zone cornerÀ.3 Select Corner 2.4 Touch the location of the inner guard-zone corner Á to definethe width of the guard zone.Viewing a List of AIS ThreatsFrom any Radar screen or the Radar overlay, you can view andcustomize the appearance of a list of AIS threats.From a Radar screen or the Radar overlay, select MENU >Other Vessels > AIS List.Showing AIS Vessels on the Radar ScreenAIS requires the use of an external AIS device and activetransponder signals from other vessels.You can configure how other vessels appear on the Radarscreen. If any setting (except the AIS display range) isconfigured for one radar mode, the setting is applied to everyother radar mode. The details and projected heading settingsconfigured for one radar mode are applied to every other radarmode and to the Radar overlay.1 From a Radar screen or the Radar overlay, select MENU >Other Vessels > AIS Display Setup.2 Select an option:• To indicate the distance from your location within whichAIS vessels appear, select AIS Dis. Range, and select adistance.• To show details about AIS-activated vessels, selectDetails > Show.• To set the projected heading time for AIS-activatedvessels, select Proj. Heading, and enter the time.• To show the tracks of AIS vessels, select Trails, andselect the length of the track that appears.VRM and EBLThe variable range marker (VRM) and the electronic bearing line(EBL) measure the distance and bearing from your boat to atarget object. On the Radar screen, the VRM appears as a circlethat is centered on the present location of your boat, and theEBL appears as a line that begins at the present location of yourboat and intersects the VRM. The point of intersection is thetarget of the VRM and the EBL.Showing the VRM and the EBLThe VRM and the EBL configured for one mode are applied toother radar modes.NOTE: The VRM and the EBL cannot be changed in sentrymode.From a radar screen, select MENU > Show VRM/EBL.Adjusting the VRM and the EBLBefore you can adjust the VRM and the EBL, you must showthem on the Radar screen (Showing the VRM and the EBL).You can adjust the diameter of the VRM and the angle of theEBL, which moves the intersection point of the VRM and theEBL. The VRM and the EBL configured for one mode areapplied to all other radar modes.1 From a Radar screen, select a new location for theintersection point of the VRM and the EBL.2 Select Drop VRM/EBL.3 Select Stop Panning.Measuring the Range and Bearing to a Target ObjectBefore you can adjust the VRM and the EBL, you must showthem on the Radar screen (Showing the VRM and the EBL).1 From a Radar screen, select the target location.2 Select Measure Distance.The range and the bearing to the target location appear in theupper-left corner of the screen.Radar OverlayWhen you connect your chartplotter to an optional Garminmarine radar, you can use the Radar overlay to overlay radarinformation on the Navigation chart or on the Fishing chart.The Radar overlay superimposes radar information on theNavigation chart or the Fishing chart. Data appears on theRadar overlay based on the most recently used radar mode(such as Harbor, Offshore, or Sentry), and all settingsconfigurations applied to the Radar overlay are also applied tothe last-used radar mode. For example, if you use Harbor modeand then you switch to the Radar overlay, the Radar overlaywould show Harbor mode radar data. If you changed the gainsetting using the Radar overlay menu, the gain setting forHarbor mode would change automatically.Radar Overlay and Chart Data AlignmentWhen using the Radar overlay, the chartplotter aligns radar datawith chart data based on the boat heading, which is based bydefault on data from a magnetic heading sensor connectedusing a NMEA 0183 or NMEA 2000 network. If a heading sensoris not available, the boat heading is based on GPS trackingdata.GPS tracking data indicates the direction in which the boat ismoving, not the direction in which the boat is pointing. If the boatis drifting backward or sideways due to a current or wind, theRadar overlay may not perfectly align with the chart data. Thissituation should be avoided by using boat-heading data from anelectronic compass.If the boat heading is based on data from a magnetic headingsensor or an automatic pilot, the heading data could becompromised due to incorrect setup, mechanical malfunction,magnetic interference, or other factors. If the heading data isRadar 21 |
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