Humminbird 161 To adjust the Sensitivity, Highlight Sensitivity on the Sonar X-PressTMmenu

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Sensitivity

Sensitivity controls how much detail is shown on the display and will adjust the sensitivity of all sonar frequencies. Increasing the sensitivity shows more sonar returns from small baitfish and suspended debris in the water; however, the display may become too cluttered. When operating in very clear water or greater depths, increased sensitivity shows weaker returns that may be of interest. Decreasing the sensitivity eliminates the clutter from the display that is sometimes present in murky or muddy water. If Sensitivity is adjusted too low, the display may not show many sonar returns that could be fish.

Sensitivity at Low

Sensitivity at Medium

Sensitivity at High

To adjust the Sensitivity:

1.Highlight Sensitivity on the Sonar X-PressTMmenu.

2.Use the LEFT or RIGHT 4-WAY Cursor Control keys to increase or decrease the Sensitivity setting. (Low = 1, High = 20, Default = 10)

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Contents GPS Chartplotter Operations Manual Thank You Table of Contents Iii Key FunctionsSonar Menu Tab Chart Menu Tab Specifications Glossary Contact Humminbird 103 How Sonar Works Peak to Peak measures power output at the highest points How GPS and Cartography Work Single Beam SonarPage Bait Ball Hard Bottom Rocky Bottom What’s On the DisplayAdjacent to your boat, including the following items Structure where fish may be hidingViews Zoom View Chart View Big Digits ViewSonar views Sonar ViewSonar View Real Time Sonar RTS Window Understanding Sonar HistoryBottom Presentation Freeze FramePage Sonar Zoom View Sonar Zoom ViewCircular Flasher View Big Digits ViewBird’s Eye View Bird’s Eye ViewChart View without Active Cursor Chart ViewView Orientation Combo ViewViewing Cartography Chart View with Cursor PresentWaypoints, Routes and Tracks Introduction to NavigationSave, Edit, or Delete a Waypoint Navigate to a Waypoint or Position Add a Waypoint Target or Trolling Grid Navigation X-PressTMmenuSave, Edit or Delete a Route Edit, Delete or Hide Saved Tracks Save or Clear a Current TrackKey Functions POWER/LIGHT KeyView Key Info KeyWAY Cursor Control Key Menu KeyGoto Key Mark KeyZoom +/- Key Exit KeyMenu System Powering Up the UnitSonar Tab Normal Mode Advanced Mode Normal Simulator System Status Start-Up Options MenuNormal Operation System Status SimulatorSelf Test Accessory TestGPS Diagnostic View GPS Diagnostic ViewSonar views only Sonar X-PressTMMenuHighlight Sensitivity on the Sonar X-PressTMmenu To adjust the SensitivitySensitivity Upper Range To adjust the Upper RangeHighlight Lower Range on the Sonar X-PressTMmenu To adjust the Lower RangeLower Range To adjust the Chart Speed Chart SpeedTo adjust the Bottom View Bottom ViewBottom Range To adjust the Bottom RangeBottom Lock To turn on Bottom LockTo Cancel Navigation Cancel NavigationHighlight Cancel Navigation on the Sonar X-PressTMmenu Only when NavigatingNavigation views only Navigation X-PressTMMenuTo view the Waypoint Name Submenu Waypoint NameHighlight WaypointName on the Navigation X-PressTMmenu Waypoint Submenu contains the following menu choicesCursor to Waypoint Chart or Combo view onlySave Current Track To move cursor to a saved waypointSkip Next Waypoint Clear Current TrackSave Current Route Remove Target Highlight Cancel Navigation on the Navigation X-PressTMmenuTo Remove a Target Only if a Target is ActiveSonar Window Remove GridTo Remove a Grid To Set the Size of the Sonar Window in the Combo ViewMost recently-created waypoint Sonar tab Press the Menu key twice to access the Main MenuSonar Menu Tab To turn Fish ID+ on or off Fish ID+TMTo change the RTS Window setting To change the Fish ID Sensitivity settingFish ID Sensitivity Highlight Fish ID Sensitivity on the Sonar main menuTo change the Depth Lines setting To change the Zoom Width SettingZoom Width Depth LinesSurface Clutter To change the Surface Clutter settingTo change the Max Depth setting To change the Noise Filter settingNoise Filter Max DepthWater Type To change the Water Type settingNavigation tab Navigation Menu TabCurrent Track allows you to view the Current Track submenu Current TrackTo view the Current Track Submenu Highlight Current Track on the Navigation main menuSaved Tracks allows you to view the Saved Tracks submenu Saved TracksTo view the Saved Tracks Submenu Highlight Saved Tracks on the Navigation main menuTo view the Waypoints Submenu WaypointsHighlight Waypoints on the Navigation main menu Waypoints Submenu contains the following menu choicesTo view the Routes Submenu RoutesHighlight Routes on the Navigation main menu Routes Submenu contains the following menu choicesGrid Rotation Chart OrientationNorth Reference To change the Track Minimum Distance setting To change the Trackpoint Interval settingTrackpoint Interval Track Min DistanceDelete All Nav Data Map DatumCourse Projection Line Chart Menu Tab Highlight Chart Detail Level on the Chart main menu Chart Detail LevelTo change the Chart Detail Level setting To change the Lat/Lon Grid setting To change the Map Borders settingMap Borders Lat/Lon GridTo set the Simulation Position Set Simulation PositionSet Map Offset To change the Map Offset settingClear Map Offset To Clear Map OffsetAlarms Menu Tab Fish ID Alarm Depth AlarmTo change the Depth Alarm setting To change the Fish ID Alarm settingTemp Alarm Low Battery AlarmTo change the Low Battery Alarm setting To change the Temp Alarm settingArrival Alarm Off Course AlarmTo change the Off Course Alarm setting To change the Arrival Alarm settingAlarm Tone Drift AlarmTo change the Drift Alarm setting To change the Alarm Tone settingSetup Menu Tab Units Distance Units DepthUnits Temp Language User ModeUnits Speed Restore Defaults Triplog ResetTo Reset Triplog To Restore DefaultsAdvanced, Sonar view only Select ReadoutsTo Select Readouts To change the Depth Offset settingDepth Offset To change the Speed Calibration setting To change the Temp Offset settingTemp Offset Speed CalibrationLocal Time Zone To change the Daylight Saving Time settingDaylight Saving Time To change the Local Time ZonePosition Format To change the Position Format settingTime Format To change the Time FormatTo change the Date Format Date FormatNmea Output To turn Sonar on or off SonarTo turn Nmea Output on or off Combo View Views Menu TabTo Change the View Status of Any View Highlight the View main menu tabSeriesTM Defaults to Simulator with a Transducer Attached TroubleshootingOr faulty Display ProblemsProblem Possible Cause Isolation Finding the Cause of NoiseBoat’s engine Cavitation fromSpecifications Sonar Terms GlossaryPage Page Page Page Receiver See Transmitter Page Page Page GPS & Navigation Terms Page Page 100 101 102 103 104 105 Contact Humminbird