User manual EAGLE FISH ID ADDITIONAL INSTRUCTIONS

[. . . ] PLUS INSTALLATION AND OPERATION INSTRUCTIONS LITHO IN U. S. A. 988-0106-31 PDF compression, OCR, web-optimization with CVISION's PdfCompressor EAGI TABLE OF CONTENTS INTRODUCTION INSTALLATION POWER CONNECTIONS NOISE TRANSDUCER KEYBOARD BASICS OPERATION SENSITIVITY 1 1 1 SECOND ECHO - Another echo that registers at roughly twice the depth ofa targetecho. This is caused by the sound waves reflecting off the bottom, strikingthe surface of the water, travelling to the bottom again, and returning to the surface. SECOND FUNCTION KEY - A buttonthat convertsthe functions of the primarykeys to other functions. SENSITIVITY - The ability of a sonar unit's receiverto displaytargets. [. . . ] J 1 I · II ii 1 A FISH ALARM Press both the Fish 1. 0. This is an audiblefish alarm. A 1AUTO J to the manual mode, pressthe AUTO key. You can return the unitto automatic at anytime by pressing the AUTO key again. Turningthe uniton enables theautomatic mode. To switch PDF compression, OCR, web-optimization with CVISION's PdfCompressor 6 23 BOATS DIRECTION OF TRAVEL OPERATION SENSITIVITY Theunit is in the AUTO SEARCH mode when ft's first turned on. The micro-computer automatically adjuststhe sensitivity and range to find and lock onto thebottom. The digitaldepth flashes"0" until it finds and locks onto the bottom. You can leave the sensitivity in the automatic mode or manually adjust it to suit conditions. You mayneed to increase thesensitivity to showfish symbols when the unit is in automatic. The letters "SENS" will flash on the right side of the display. To increase thesensitivity, press and holdthe up arrow key until the sensitivity is at the desired level. After you've finishedsetting thesensitivity level, theletters "SENS"and the sensitivity bar will disappear after eight seconds ·Il A . B C Very small fish probablywill not arch at all. Medium sizedfish will show a partial arch, or a shape similar to an arch if they're in deep water. Largefish will arch, butturn thesensitivity up in deeperwaterto see the arch. Because of water conditions, such as heavy surface clutter, thermoclines, etc. , the sensitivity sometimes cannot be increased enough to get fish arches. One of the best ways to get fish arches is to expand or "zoom" a segment ofthe water. For the best results, turn the sensitivity up as highas possible withoutgettingtoomuchnoise on the screen. In mediumto deep water, this method should work to display fish arches. 22 7 PDF compression, OCR, web-optimization with CVISION's PdfCompressor With highsensitivity settings, a second bottomecho (secondecho) may appear. It'scaused by the returning signal reflecting off the surface of thewater. Then it makes a second trip to the bottom and back again. Both 8 degree and 20 degreetransducers give accurate bottom readings, even though the bottom signal is much wider on the 20 degree model. The rest of the signaltells you whether you are over rocks, mud, etc. SIGNAL INTERPRETATION Your unit givesan accuratepicture of the bottomthat your boat is passing. A bottom of firm sand, gravel, shell, or hard clay returns a wide bottom signal. If the automaticfeature is off and the bottom signal narrows , then it means that you have moved over a mud bottom. [. . . ] It converts all echoes to horizontal bars when they first appear on the screen. This gives a rapid update of conditions directly under the MODE Echoes are also scrollednormally across the display. boat. 50___uSO 'I Flu AUTO 4: FISH 'I r 1. n Jr 5- r -- . S-rn Sn 'in -'LI di U ALARMS The unit has two different alarms, a chart alarm and FishAlarm. The chart alarm consistsof a barthat displays on the left side of thescreen. [. . . ]