EXPLORER 457 Installation And Operation Manual Brandname: NorthStar Category: Other Total Pages: 60 Table of contents Danger2Important3Contents41Introduction62BasicOperation8TurningOnManually92-5SimulateMode102-6TheMainWindows112-6-1MultiWindowDisplays132-6-2FavoriteDisplays142-6-3DataHeader153-1UsingThe45746716StrengthOfEchoes17BottomTypes18Shadows19WhenToUseMixed2050KhzDisplay21WheretoFindFish223-5Range233-6GainAndThreshold244-1SonarHistoryDisplay254-1-1ExtendedHistoryMode264-4Sonar50200Display274-5SonarA-ScopeDisplay286DataWindow297-2FuelWindow307-4LowFuelAlarm327-6FuelConsumptionCurves347-7Calibration36SetupOptionMenus37Language38Frequency398-3SetupFuel408-4SetupLogs418-5SetupAlarms42Distance43Speed448-10SetupSimulate459Installation46Connections471FlushMounting48NavbusAndThe45746752SetupandTest53AppendixA-Specifications54B-1GeneralProblems56Glossary59