User manual EAGLE ULTRA III

[. . . ] azawfl'w A 'iliui. . u_. uj2 -F -- Ar A A A The micro-computer is sophisticated, but it can be fooled. It can't distinguishbetween fish and othersuspended objects suchas trotlines, turtles, submerged floats, air bubbles, etc. Individual tree limbs extending outwardsfrom a groupof limbs is the hardest objectfortheFish 1. 0. feature to distinguish fromfish. feature. GRAYLINE® ON GRAYLINE® OFF GRAYLINE level, also. [. . . ] feature is on, try increasing thesensitivity. WATERTEMPERATURE ANDTHERMOCLINES Watertemperaturehas an important-if not controlling-influence upon the activitiesof all fish. Fish are cold blooded and their bodies are alwaysthe temperature of the surrounding water. At this time, they need about a fourth as much food as they consume in the summer. Mostfishdon't spawn unless thewatertemperature iswithinrather narrow limits. A surface temperature meter helps identify the desired surface water spawning temperatures for various species. Bass and otherfish eventuallydie out when stockedin lakes that remain toocold during the summer. While somefish have awidertemperature tolerance than others, eachhasa certain range withinwhich ittriesto stay. Schooling fish suspended overdeepwater lie at the level that provides this temperature. We assume theyarethemost comfortable here. VIEWING WINDOWS To seeall ofthe available windows, press the WINDOWS key, thenpress theMENU key. Some:· I Nowpressthe key adjacent to the "MAIN MENU" label. Thescreen at right appears. inthe Thefirstwindowappears FEET I HI Digital Depth WATER DEPTH DISPLAY. upperrightcornerof A description of the screen showsintheboxatthe bottom ofthe screen. When you've finishedviewing the windows, press theCLEARkey. Thetemperature ofwaterinthe lake isseldom constantfrom toptobottom. (Seethepicture on the nextpage. ) Layers ofdifferenttemperatures form, and the junctionof a warm and cool layer of wateris called athermocline. The depth and thickness of the thermocline can vary with the season or time of day. Thermoclines are important to fishermen because they are areas where fish are active. Many times baitfish will be above the thermoclinewhile largergame fish will suspend in or justbelow it. The Ultra III can detect this invisible layerin the water, but the sensitivity will probablyhaveto be turned up to see it. SURVEYING OPERATION AUTOMATIC Whenthe Ultra III isfirstturned on, the Automatic featureisenabled. This is indicatedby the word "AUTO"at the top of the screen. TheAutomatic feature adjuststhe sensitivity and range so the bottomsignal is displayed in the lower half of the screen at all times. A LAKE Themostsuccessful anglers onanybodyofwaterarethosewhofish itday after day and year after year. They discover through experiencewhere, and atwhatdepth, theycanexpecttofindthefish theywant at anyseason. And they realize that these productive areas change throughout the year depending on water level, temperature, food, and other factors. Withthe Ultra III, anyonecan eliminateguesswork and concentrate on the areas wherefish are likely to be. Even if it's the first time on the lakel ToturnAutomatic firstpress off, the AUTO key. [. . . ] Thisproduct usesthreaded nutsinside the caseto hold the gimbal knobs ontothe unit. It's normal for doesn't affectthe thisto happenandshouldn't be acauseforconcern. This oftheunit. The unitwon't raffle whenit's installed with watertight integrity thegimbal knobs onto its bracket. MOUNTING Install the Ultra Ill in anyconvenient location, provided thereis clearance behind the unit when it is tilted for the best viewing angle. You may need to place a piece of plywood on the backof thinfiberglass panels to secure themounting hardware. Make certain thereis enough room behind the unit to attach the power and transducercables. 1 RUBBER WASHER RUBBER WASHER GIMBAL BRACKET TRANSDUCER, BRACKET, AND HARDWARE P0 WE SPEED/TEMP SENSOR (Ultra III Plus models Only) FUSE FUSE HOLDE PDF compression, OCR, web-optimization with CVISION's PdfCompressor 46 TABLE OF CONTENTS How to Obtain Service We back your investment in quality products with quick, expert service and genuine Eaglereplacement parts. [. . . ]