2 Select an option:• To set the top of the wind gauge to a North heading,select North Up.• To rotate the gauge so the direction in which you aremoving is at the top, select Head Up.Configuring the Heading Source of the EnvironmentGaugeYou can specify the source of the heading displayed on theenvironment gauge. Magnetic heading is the heading datareceived from a heading sensor, and GPS heading is calculatedby your chartplotter GPS (course over ground).1 Select Gauges > Environment > Menu > Heading Source.2 Select GPS Hdg or Magnetic.Setting the Barometer Reference TimeYou can specify the reference time used to calculate thebarometer trend. The trend is indicated in the barometer field.1 Select Gauges > Environment > Menu > Pressure Ref.Time.2 Select an option.Tide, Current, and Celestial InformationTide Station InformationYou can view information about a tide station for a specific dateand time, including the tide height, and when the next high andlow tides will occur. By default, the chartplotter shows tideinformation for the most recently viewed tide station and for thepresent date and time.Select Nav Info > Tides & Currents > Tides.Current Station InformationNOTE: Current station information is available with certaindetailed maps.You can view information about a current station for a specificdate and time, including the current speed and level of thecurrent. By default, the chartplotter shows current informationfor the most recently viewed current station and for the presentdate and time.Select Nav Info > Tides & Currents > Currents.Celestial InformationYou can view information about sunrise, sunset, moonrise,moonset, moon phase, and the approximate sky view locationof the sun and moon. The center of the screen represents thesky overhead, and the outermost rings represent the horizon.By default, the chartplotter shows celestial information for thepresent date and time.Select Nav Info > Tides & Currents > Celestial.Viewing Tide Station, Current Station, or CelestialInformation for a Different Date1 Select Nav Info > Tides & Currents.2 Select Tides, Currents, or Celestial.3 Select an option.• To view information for a different date, select ChangeDate > Manual, and enter a date.• To view information for today, select Change Date >Current.• If available, to view information for the day after the dateshown, select Next Day.• If available, to view information for the day before the dateshown, select Previous Day.Viewing Information for a Different Tide or CurrentStation1 Select Nav Info > Tides & Currents.2 Select Tides or Currents.3 Select Nearby Stations.4 Select a station.Viewing Almanac Information from the NavigationChart1 From a chart or 3D chart view, select a location.2 Select Information.3 Select Tides, Currents, or Celestial.Digital Selective CallingNetworked Chartplotter and VHF RadioFunctionalityIf you have a NMEA 0183 VHF radio or a NMEA 2000 VHFradio connected to your chartplotter, these features areenabled.• The chartplotter can transfer your GPS position to your radio.If your radio is capable, GPS position information istransmitted with DSC calls.• The chartplotter can receive digital selective calling (DSC)distress and position information from the radio.• The chartplotter can track the positions of vessels sendingposition reports.If you have a Garmin NMEA 2000 VHF radio connected to yourchartplotter, these features are also enabled.• The chartplotter allows you to quickly set up and sendindividual routine call details to your Garmin VHF radio.• When you initiate a man-overboard distress call from yourradio, the chartplotter shows the man-overboard screen andprompts you to navigate to the man-overboard point.• When you initiate a man-overboard distress call from yourchartplotter, the radio shows the Distress Call page to initiatea man-overboard distress call.Turning On DSCSelect Settings > Other Vessels > DSC.DSC ListThe DSC list is a log of the most recent DSC calls and otherDSC contacts you have entered. The DSC list can contain up to100 entries. The DSC list shows the most recent call from aboat. If a second call is received from the same boat, it replacesthe first call in the call list.Viewing the DSC ListBefore you can view the DSC list, the chartplotter must beconnected to a VHF radio that supports DSC.Select Nav Info > Other Vessels > DSC List.Adding a DSC ContactYou can add a vessel to your DSC list. You can make calls to aDSC contact from the chartplotter.1 Select Nav Info > Other Vessels > DSC List > AddContact.2 Enter the Maritime Mobile Service Identity (MMSI) of thevessel.3 Enter the name of the vessel.Digital Selective Calling 23