Eagle Electronics 500CDF manual Fish I.D. Fish Symbols & Depths

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Surface clutter

Fish arches

Structure

In FasTrack, fish arches show as horizontal bars.

Bottom signal

 

ColorLine

 

 

FasTrack

 

Sonar Page showing FasTrack.

bar graph

Fish I.D. (Fish Symbols & Depths)

The Fish I.D. feature identifies targets that meet certain conditions as fish. The microcomputer analyzes all echoes and eliminates surface clutter, thermoclines, and other signals that are undesirable. In most instances, remaining targets are fish. The Fish I.D. feature displays fish symbols on the screen in place of the actual fish echoes.

There are several fish symbol sizes. These are used to designate the relative size between targets. In other words, Fish I.D. displays a small fish symbol when it thinks a target is a small fish, a medium fish sym- bol on a larger target and so on.

The sonar's microcomputer is sophisticated, but it can be fooled. It can't distinguish between fish and other suspended objects such as trotlines, turtles, submerged floats, air bubbles, etc. Individual tree limbs ex- tending outwards from a group of limbs is the hardest object for the Fish I.D. feature to distinguish from fish.

You may see fish symbols on the screen when actually, there are no fish. The reverse is also true. The illustrations on the next page show how Fish I.D. can actually miss fish that are present.

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Contents Installation and Operation Instructions Page Table of Contents ColorLine level To turn Auto Sensitivity back on Page Read Me First How this manual can get you out on the water, fastPage Figuration and installation, bottom composi How Sonar Works How to Use this Manual Typographical Conventions Page Transducer Installation PreparationsSingle-frequency transom installations Pad Deadrise less than Strakes Good and poor transducer locations Transom Page Dot Alignment letters Positions Transducer Ratchets Bolt Transom Bottom Hull Flat-bottom hull Deep-vee hull Internal tooth washer TMB-S bracket Bolt Nut Flat washer Transducer mounted on trolling motor, side view Partial fish arches Hulls With Flotation Materials Transducer location High speed Trolling speed Page Epoxy transducer to hull Speed/Temperature Sensors Optional Speed Sensor Installation Good location Power Connections Power connections for the sonar unit Page Front 72.9 173.9 23.4 157.9 Millimeter 56.9 Inch In-Dash Template Face Cover Page Basic Sonar Operation KeyboardPower/lights on and off Main Menu Pages Pages Menu, showing Sonar display options Page Page Sonar Page, showing full sonar chart mode Basic Sonar Quick Reference Sonar Operations Page Page Important Tip Page Page Page Sonar Options & Other Features ASP Advanced Signal ProcessingAlarms To adjust and turn on the shallow alarm To turn off the alarm, press ALARM↓ to Deep Alarm Enabledentexit Backlight Level Calibrate Speed Chart Speed ColorLine Thin or no ColorLine Wider ColorLine Contrast Depth CursorDepth Range Automatic Depth Range ManualFasTrack Fish I.D. Fish Symbols & Depths FishTrack Symbols with FishTrack depths Frequency Change Transducer Frequency SeaFinder CDF onlySonar Features menu with a frequency of 200 kHz selected HyperScroll Noise RejectionOverlay Data Page To return to the previous page, press Exit Ping Speed & HyperScroll TipPage Pop-up Help Reset Options Reset Water Distance Screen Contrast and Backlight LevelSet Keel Offset Press MENUMENU↓ to SET Keel Offsetent Sensitivity & Auto Sensitivity Page Set Language Software Version InformationSonar Chart Mode Sonar Page & Sonar Chart Display OptionsPage Page Customizing the Digital Data/Chart Screen Sonar Simulator Stop Chart Surface Clarity Press ↓ or ↑ to select clarity levelEXITEXIT Transparency Units of MeasureVolume Zoom & Zoom BarZoom Pan Troubleshooting Page Page Page Supplemental Material FCC Compliance Page Index Page Page 102 103 How to Obtain Service… Accessory Ordering Information for all countries Visit our web site