Humminbird 141c manual Fish ID+TM, To change the Fish ID Sensitivity setting

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Fish ID+TM

Fish ID+TM uses advanced signal processing to interpret sonar returns, and will display a Fish Symbol when very selective requirements are met. When a fish is detected, a fish icon and its depth are displayed above the return that has been classified as being a fish. Three different fish size icons represent the intensity of the sonar return, and provide an indicator of relative fish size.

Your 100 Series™ Fishing System represents targets detected in the 200 kHz narrow beam as Orange Fish Symbols.

200 kHz, Narrow Beam

Orange Fish Symbols

Fish ID Sensitivity

Fish ID Sensitivity adjusts the threshold of the Fish ID+TM detection algorithms. Selecting a higher setting allows weaker returns to be displayed as fish. This is useful for identifying smaller fish species or baitfish. Selecting a lower setting displays fewer fish from weak sonar returns. This is helpful when seeking larger species of fish. Fish ID Sensitivity is used in conjunction with Fish ID+TM. Fish ID+TM must be On for Fish ID Sensitivity to affect the ability of the Fishing System to identify sonar returns as fish.

To change the Fish ID Sensitivity setting:

1.Highlight Fish ID Sensitivity on the Sonar main menu.

2.Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Fish ID Sensitivity setting. (Low = 1, High = 10, Default = 5)

Transducer Cone and Fish Arches

When Fish ID+TM is turned off, the Fishing System shows only the raw sonar returns on the display. These returns will often result in "arches" forming on the display, indicating potential targets. Due to the transducer beam angle, the distance to a fish decreases as the fish moves into the beam, and then increases as it moves out again, creating a Fish Arch when this distance change is shown on the display. Boat speed, chart speed, and the position of the fish within the sonar beam greatly affect the shape of the arch.

To turn Fish ID+ on or off:

1.Highlight Fish ID+ on the Sonar main menu.

2.Use the LEFT or RIGHT 4-WAY Cursor Control keys to turn the Fish ID+TM setting On or Off. (Off, On, Default = Off)

Real Time Sonar (RTS®) Window

RTS® Window sets the RTS® Window to either Wide or Narrow, or turns it off in the Sonar View. The RTS® Window always updates at the rate possible and only displays returns that are within the transducer beam. (See Real Time Sonar (RTS®) Window for additional detail).

RTS® Window (Wide)

RTS® Window (Narrow)

RTS® Window (Off)

To change the RTS® Window setting:

1.Highlight RTS Window on the Sonar main menu.

2.Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the RTS® Window setting. (Wide, Narrow, Off, Default = Wide)

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Contents 141c Operations Manual Thank You Table of ContentsTable of Contents Single Beam Sonar Peak to Peak measures power output at the highest pointsHow Sonar Works High Sonar Intensity Return Bait Ball What’s On the DisplaySonar View ViewsSonar View Zoom View Big Digits View Circular Flasher View Sonar ViewBottom Presentation Understanding Sonar HistoryReal Time Sonar RTS Window Sonar Zoom View Sonar Zoom ViewBig Digits View POWER/LIGHT KeyKey Functions Circular Flasher ViewWAY Cursor Control Key Menu KeyExit Key Owering Up the UnitPress TM Menu Sonar Tab, Normal Mode Sonar Tab, Advanced ModeMenu System Simulator Start-Up Options MenuNormal Operation System Status Sonar X-Press TM Menu Accessory TestConduct a unit self-test StatusTo adjust the Upper Range To adjust the SensitivitySensitivity Upper RangeZoom Level Chart SpeedLower Range Bottom Lock To adjust the Bottom RangeBottom Range Sonar Menu TabTo change the RTS Window setting To change the Fish ID Sensitivity settingFish ID+TM Fish ID SensitivityDepth Lines Bottom ViewZoom Width Max Depth Surface ClutterNoise Filter To change the Water Type setting Alarms Menu TabAlarms Menu Water TypeFish ID Alarm Depth AlarmLow Battery Alarm Temp AlarmSetup Menu Tab Alarm ToneTo change the Alarm Tone setting Highlight Alarm Tone on the Alarms main menuUnits Depth User ModeUnits Temp Units DistanceSelect Views Triplog ResetRestore Defaults Temp Offset Select ReadoutsDepth Offset To change the Speed Calibration setting TroubleshootingSpeed Calibration Advanced, with Temp/Speed onlyProblem Possible Cause Display ProblemsControl head loses power at high speeds Finding the Cause of NoiseSonar Terms SpecificationsGlossary 531442-1A141cEng.qxd 11/15/2005 840 PM Receiver See Transmitter 531442-1A141cEng.qxd 11/15/2005 840 PM 531442-1A141cEng.qxd 11/15/2005 840 PM Contact Humminbird