M121 Installation And Operation Manual Brandname: NorthStar Category: GPS Total Pages: 113 Table of contents Contents2Warning51Introduction61-2CleaningandMaintenance71-3Plug-InCards82BasicOperation10OverviewofTheM84Keys112-1UsingTheKeys12TurningOnManually132-4ManOverboardMob142-7TheMainWindows152-7-1MultiWindowDisplays172-7-2FavoriteDisplays182-7-3DataHeader193NavigationChart203-1-3FollowingARoute213-2ChartWindow223-2-1ChartModes233-2-5FindingAChartSymbol243-5TracksAndTracking254VideoWindow266NavigationWaypoints276-1WaypointsWindow286-2-5DeletingAWaypoint297-1RoutesWindow307-2-2EditingARoute32GpsWorldwideNavigation338-1SatelliteWindow349-2InterpretingTheDisplay35StrengthOfEchoes36Shadows37WhenToUse50Khz3850KhzDisplay39WhereToFindFish409-5Range419-6GainAndThreshold4210-3SonarBottomWindow4510-5SonarA-ScopeWindow4611GaugesWindow4713-2FuelDisplay4813-4LowFuelAlarm5013-7Calibration5414TidesWindow5515UserCardWindow56FormattingTheUserCard5716Ais5816-3AisWindows59DisplayingFullAisDetails6017DscbuddyTrackWindows61GoingToABoat6218Radar6318-2RadarModes64ManualMode6518-9UsingTheVrmebl67FloatingVrmebl68GuardZone69GuardZone7019SettingUpTheM121m8471FactoryReset7219-2SetupChart73MapDatum74GeneralSubmenu75Frequency76NoiseFilter77Palette78HeadingLine7919-5SetupGps8019-6SetupFuel8119-7SetupTrack82PlottingInterval8319-9SetupLogs8419-10SetupAlarms85Distance8619-13SetupCalibrate87LocalOffset88Simulate8920Installation90Connections93FlushMountingTheM121m8494SelectingAnAntenna9620-9InstallationRadar98NavbusandTheInstrument99SetupandTest100AppendixA-Specifications101PhysicalDimensions102ListofDatums103AppendixB-Troubleshooting104B-2GpsNavigationProblems105B-5RadarProblems108NavigationData111M121m84113