Humminbird 161 manual

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Chart Speed: Chart Speed is a user-controllable feature that sets the speed at which sonar information moves across the display. A faster setting displays sonar information from more pings and shows more detail, but the information moves quickly across the display: a slower setting permits viewing of more sonar history, but does not display as much detail. The best setting is often the user's personal choice.

Cone Angle: The cone angle is the angular measurement of the sonar beam at a specific dB down point (i.e. -10 dB). See dB Down Point.

Customizable Digital Readouts: Customizable Digital Readouts is a Humminbird® feature that permits the user to select the specific digital information that appears in the main Sonar view (i.e. Speed, Temperature, Barometric Pressure, TripLog, etc.)

Dead Zone: The dead zone is the area of the sonar beam that receives the sonar signal after the main bottom return. Fish and other objects close to the bottom that fall within the dead zone will probably not be visible in the sonar beam. Precision sonar beams, such as the Humminbird® 20° beam, have a smaller dead zone than wider sonar beams.

Decibel: A Decibel is the measurement for sound pressure level, or "intensity" of the sonar return. See dB Down Point.

dB Down Point: The dB Down Point is the standard decibel level at which the sonar cone angle is measured, and is written as "@ -10 dB" or "@ -3 dB". Measurements at smaller down points (bigger negative numbers) indicate that the less intensive sonar signals are being used for the measurement.

Display, FSTN: FSTN is an acronym for Film Super-Twist Nematic. FSTN is a monochrome display technology characterized by black, high-contrast pixels. All monochrome fixed mount Humminbird® products use FSTN technology.

DualBeam PLUSTM: DualBeam PLUSTM is a Humminbird® sonar configuration that uses two sonar beams simultaneously, and combines the information from both beams into one view by overlapping the data on-screen, or shows each beam individually side by side, or permits each beam to be viewed individually full screen.

Feature Memory: Feature Memory is a Humminbird® feature that retains the user's menu settings in permanent memory. Settings are retained even when the unit is powered off indefinitely.

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Contents GPS Chartplotter Operations Manual Thank You Table of Contents Key Functions IiiSonar Menu Tab Chart Menu Tab Specifications Glossary Contact Humminbird 103 How Sonar Works Peak to Peak measures power output at the highest points Single Beam Sonar How GPS and Cartography WorkPage What’s On the Display Bait Ball Hard Bottom Rocky BottomStructure where fish may be hiding Adjacent to your boat, including the following itemsZoom View Chart View Big Digits View ViewsSonar views Sonar ViewSonar View Understanding Sonar History Real Time Sonar RTS WindowFreeze Frame Bottom PresentationPage Sonar Zoom View Sonar Zoom ViewBig Digits View Circular Flasher ViewBird’s Eye View Bird’s Eye ViewChart View Chart View without Active CursorCombo View View OrientationChart View with Cursor Present Viewing CartographyIntroduction to Navigation Waypoints, Routes and TracksSave, Edit, or Delete a Waypoint Navigate to a Waypoint or Position Navigation X-PressTMmenu Add a Waypoint Target or Trolling GridSave, Edit or Delete a Route Save or Clear a Current Track Edit, Delete or Hide Saved TracksPOWER/LIGHT Key Key FunctionsView Key Info KeyMenu Key WAY Cursor Control KeyMark Key Goto KeyZoom +/- Key Exit KeyPowering Up the Unit Menu SystemSonar Tab Normal Mode Advanced Mode Start-Up Options Menu Normal OperationNormal Simulator System Status Simulator System StatusAccessory Test Self TestGPS Diagnostic View GPS Diagnostic ViewSonar X-PressTMMenu Sonar views onlyTo adjust the Sensitivity SensitivityHighlight Sensitivity on the Sonar X-PressTMmenu To adjust the Upper Range Upper RangeTo adjust the Lower Range Lower RangeHighlight Lower Range on the Sonar X-PressTMmenu Chart Speed To adjust the Chart SpeedTo adjust the Bottom View Bottom ViewTo adjust the Bottom Range Bottom RangeBottom Lock To turn on Bottom LockCancel Navigation To Cancel NavigationHighlight Cancel Navigation on the Sonar X-PressTMmenu Only when NavigatingNavigation X-PressTMMenu Navigation views onlyWaypoint Name To view the Waypoint Name SubmenuHighlight WaypointName on the Navigation X-PressTMmenu Waypoint Submenu contains the following menu choicesChart or Combo view only Cursor to WaypointSave Current Track To move cursor to a saved waypointClear Current Track Save Current RouteSkip Next Waypoint Highlight Cancel Navigation on the Navigation X-PressTMmenu Remove TargetTo Remove a Target Only if a Target is ActiveRemove Grid Sonar WindowTo Remove a Grid To Set the Size of the Sonar Window in the Combo ViewMost recently-created waypoint Press the Menu key twice to access the Main Menu Sonar Menu TabSonar tab Fish ID+TM To turn Fish ID+ on or offTo change the Fish ID Sensitivity setting To change the RTS Window settingFish ID Sensitivity Highlight Fish ID Sensitivity on the Sonar main menuTo change the Zoom Width Setting To change the Depth Lines settingZoom Width Depth LinesTo change the Surface Clutter setting Surface ClutterTo change the Noise Filter setting To change the Max Depth settingNoise Filter Max DepthTo change the Water Type setting Water TypeNavigation Menu Tab Navigation tabCurrent Track Current Track allows you to view the Current Track submenuTo view the Current Track Submenu Highlight Current Track on the Navigation main menuSaved Tracks Saved Tracks allows you to view the Saved Tracks submenuTo view the Saved Tracks Submenu Highlight Saved Tracks on the Navigation main menuWaypoints To view the Waypoints SubmenuHighlight Waypoints on the Navigation main menu Waypoints Submenu contains the following menu choicesRoutes To view the Routes SubmenuHighlight Routes on the Navigation main menu Routes Submenu contains the following menu choicesChart Orientation North ReferenceGrid Rotation To change the Trackpoint Interval setting To change the Track Minimum Distance settingTrackpoint Interval Track Min DistanceMap Datum Course Projection LineDelete All Nav Data Chart Menu Tab Chart Detail Level To change the Chart Detail Level settingHighlight Chart Detail Level on the Chart main menu To change the Map Borders setting To change the Lat/Lon Grid settingMap Borders Lat/Lon GridSet Simulation Position To set the Simulation PositionTo change the Map Offset setting Set Map OffsetClear Map Offset To Clear Map OffsetAlarms Menu Tab Depth Alarm Fish ID AlarmTo change the Depth Alarm setting To change the Fish ID Alarm settingLow Battery Alarm Temp AlarmTo change the Low Battery Alarm setting To change the Temp Alarm settingOff Course Alarm Arrival AlarmTo change the Off Course Alarm setting To change the Arrival Alarm settingDrift Alarm Alarm ToneTo change the Drift Alarm setting To change the Alarm Tone settingSetup Menu Tab Units Depth Units TempUnits Distance User Mode Units SpeedLanguage Triplog Reset Restore DefaultsTo Reset Triplog To Restore DefaultsSelect Readouts Advanced, Sonar view onlyTo change the Depth Offset setting Depth OffsetTo Select Readouts To change the Temp Offset setting To change the Speed Calibration settingTemp Offset Speed CalibrationTo change the Daylight Saving Time setting Local Time ZoneDaylight Saving Time To change the Local Time ZoneTo change the Position Format setting Position FormatTime Format To change the Time FormatDate Format Nmea OutputTo change the Date Format Sonar To turn Nmea Output on or offTo turn Sonar on or off Views Menu Tab Combo ViewTo Change the View Status of Any View Highlight the View main menu tabTroubleshooting SeriesTM Defaults to Simulator with a Transducer AttachedDisplay Problems Problem Possible CauseOr faulty Finding the Cause of Noise Isolation Boat’s engine Cavitation fromSpecifications Glossary Sonar TermsPage Page Page Page Receiver See Transmitter Page Page Page GPS & Navigation Terms Page Page 100 101 102 103 104 Contact Humminbird 105