Magna and Magna Plus INSTALLATION AND OPERATION INSTRUCTIONS LITHO IN U.S.A. 988-0106-42 EAGI F7jTM PDF compression, OCR, web-optimization with CVISION's PdfCompressor i-low to Obtain Service We back your investment in quality products with quick, expert service and genuine Eagle replacement parts. If you needservice or repairs, contactthe authorized Eagle ServiceCenternearestyou. The enclosed Service CenterList will helpyou findtheclosestrepairfacility.Ifdesired, youcancontact the Factory CustomerService Center. Transportation expenses to us or tothe Authorized Service Center are your responsability. The product will be returned to you by surfacecarrier at no charge. If your unit needsrepair, and you wish to write orsend a product to the factory, use the followingaddress: Factory Repair Alt: Service Department Tulsa,OK 74128-2486 12000 E Skelly Dr EAGLE ELECTRONICS You can call or write to an authorized Eagle Service Center or the Factory Customer Service Department before sending your unit in for repair. A technicianmaybe ableto solvethe problemand save you the inconvenience of returning your unit. Forthe Eagle factorycustomerservice department, call 1-918-234-1452. Whensendinga productto the factory or a servicecenter, we recommend you do the following: 1. Use the original box and filler material the product was packed in when shipping your product. 2. Always insure the parcelagainst damageor lossduring shipment. 3. For propertesting, repair, and service, send a brief note with the product describing the problem. Be sure to include your name, return shipping address, and a daytimetelephone number. IMPORTANT: Be sure to include proof of purchase when sending the product if it is still in warranty. PDF compression, OCR, web-optimization with CVISION's PdfCompressor 27 4. The boat mustbe moving ataslowtrollingspeed toseefish arches. lithe boat is motionless, fish stay inthecone, showing onthe display as straighthorizontal lines. TABLE OF CONTENTS INTRODUCTION INSTALLATION POWER CONNECTIONS SPEED/TEMPERATURE SENSOR KEYBOARD BASICS DISPLAY MENUS OPERATION AUTOMATIC RANGE ZOOM - Automatic Operation ZOOM - Manual Operation SENSITIVITY GRAYLINE® FISH ID ELECTRICALNOISE A majorcause ofsonar problems is electrical noise. This usually appearson the sonar's display as randompatternsof dots or lines. In severe cases, It can completely coverthe screen with blackdots, orcause the unit operate erraticly, or not at all. To eliminateor minimize the effects of electrical noise, first tryto determinethe cause. Withthe boat at rest in the water, the first thing you should do is turn all electrical equipmenton the boat off. Makecertain the engineis off, also. Turn yourMagnaon, then turn off ASP (Advanced Signal Processing). There should be a steadybottom signal on the display. Nowturn on each piece of electrical equipment on the boatand viewthe effecton the sonar'sdisplay. Forexample, turn onthebilgepumpandviewthesonardisplayfornoise.If no noiseis present, turn the pumpoff, then turn on the VHFradioandtransmit. Keepdoingthis until all electrical equipment has been turned on, their effect on the sonar display noted, then turned off. from an electrical instrument, trolling motor, pump, If youfind noiseinterference or radio, try to isolate the problem. You can usually re-route the sonar unit's power cable and transducer cable away from the wiring that is causing the interference. VHF radio antennacables radiate noise whentransmitting, so be certain to keepthesonar'swires awayfrom it. Youmay needto route the sonar unit'spowercabledirectlytothe battery to isolateitfromotherwiringon the boat. 1 2 3 4 5 5 6 6 6 7 8 9 9 10 11 cHART5PEED DISPLAY MODE ALARMS FISH ALARM DEPTH ALARM LAMP FEET/METER DISPLAyCONTRAST ASP (Advanced Signal Processing) TRANSDUCERS AND CONE ANGLES SIGNAL INTERPRETATION FISH ARCHES WATER TEMPERATURE ANDTHERMOCLINES SURVEYINGALAKE BAIT FISH SONAR TROUBLESHOOTING HOW TO OBTAIN SERVICE 12 14 14 15 16 16 16 17 18 19 20 21 certain everything exdept the sonar unit is turned off, then start the engine. Increase the RPMwiththe gearshiftin neutral. If noise appearson the display, the problemcouldbe one ofthreethings;sparkplugs, alternator, ortachometer or wiring. Try using resistorsparkplugs, alternatorfilters, routing thesonarunit's cableawayfromenginewiring. Again,routing the powercabledirectlyto power the batteryhelpseliminatenoiseproblems. Make certain to use the in-line fuse supplied with the unit whenwiring the powercableto the battery. If no noise displays on the sonar unit from electrical equipment, then make 23 23 24 27 When no noise appearson the sonarunit afterall of the abovetests, then the noise source is probably cavitation. Many novices or persons with limited experience make hasty sonar installations which functionperfectlyin shallow water, orwhenthe boat is at rest. In nearlyallcases, thecause ofthe malfunction will be the locationand/or angle of the transducer. The face of the transducer must be placedin a location that has a smooth flow of water at all boat speeds. Readyourtransducerowners manual forthe best mounting position. Copyright © 1990, Eagle Electronics All rights reserved. All features and specifications subjectto changewithout notice. All screens in this manual are simulated. 26 PDF compression, OCR, web-optimization with CVISION's PdfCompressor Weak bottom echo, digitalreadingserratic, or no fish signals (cont.): 2. Electrical noisefromtheboat'smotorcaninterfere withthesonar. Thiscauses the sonarto automatically increase its Discrimination or noise rejectionfeature. Thiscan causethe unit to eliminate weakersignaissuchasfish or even structure fromthe dispiay. 3. Thewater may be deeperthan the sonar's abilityto find the bottom. if the sonarcan'tfind the bottomsignal while it's in theautomaticmode, the digitalwill flash continuously. it maychangethe range to limitsfargreaterthan the water you are in. If this happens, placethe unit in the manualmode, then changethe range toa realistic one, (for example, 0-100 feet)and increase the sensitivity. As you move into shallowerwater, a bottomsignalshould appear. 4. Checkthe batteryvoltage, lithevoltagedrops,the unit'stransmitter power also drops, reducing its ability to findthe bottomortargets. Bottomechodisappears at highspeeds or erraticdigital reading or weak bottomechowhile boat is moving 1. The transducermay be in turbulentwater, It must be mounted in asmooth flow of waterin orderfor the sonarto work at all boat speeds. Airbubblesinthe water disrupt the sonarsignals,interferingwith its ability to find the bottom or othertargets. The technicalterm for this is 'Cavitation', 2. Electrical noisefromtheboat'smotorcaninterfere withthesonar. Thiscauses the sonarto automatically increase its Discrimination or noise rejection feature. Thiscan causethe unit to eliminate weakersignals suchasfish oreven structure fromthe display.Try using resistorsparkplugsorroutingthe sonarunit'spower and transducercablesaway from otherelectricalwiring on the boat. No fish arches whenthe Fish ID feature is off: 1. Makecertain transduceris pointingstraightdown. This isthe most common problemif a partial arch is displayed. Seethe FishArch sectionin your owner's manualformore information. 2. The sensitivitymay not behigh enough. In orderforthe unit to display a fish arch, it hasto be ableto receive the fish's echo from the time it enters the cone until it leaves. If the sensitivity not highenough,the unit displays fish only is the when it is in the centerof the cone. 3. Usethe Zoom feature. it is mucheasierto displayfish arches when zoomed in on asmall range ofwaterthana large one. Forexample, you will have much betterluckseeingfish arches with a30to 60 foot rangethan a 0to 60 foot range. Thisenlargesthe targets, allowingthe displayto show much more detail. PDF compression, OCR, web-optimization with CVISION's PdfCompressor 25 IMPORTANT SERVICE INFORMATION! If your unit is not working, orif you need technical help, please use the following troubleshooting section before contactinga service centeror the factory customerservice department. Itmaysave youthetroubleofreturning yourunit. See the HowTo ObtainServicesection on page 27 if you need service. INTRODUCTION Thank you for purchasing an Eaglesonar. Your Magna or Magna Plus is a high quality sonar designed for both professional and novice fishermen. These units have an automatic feature that finds and displays the bottom, fish, structure, and morel All you haveto do is pressthe on key. However, if you wish to fine tune theunit, all you haveto do is press the menu key. The Magna series has powerful featuresavailable through easy-to-use menus. To getstarted with your Eagle unit,first readthe installation section. This is where it all begins. Improperinstallation can cause problems downthe road. After you've read the instructions, installtheunit, then readthe rest of the manual. The more you know about your unit, the better it will performfor you. Take this manual for reference when you head forthe water. SONARTROUBLESHOOTING Unit won't turnon: 1. Check the power cable'sconnection at the unit. Also checkthe wiring. 2. Makecertainthe power cable is wired properly. The red wire connects tothe positivebatteryterminal, blackto negative orground. 3. Checkthe fuse. INSTALLATION 4. Measure the batteryvoltage atthe unit'spowerconnector. Itshouldbeat least 11 volts. If it isn't,the wiringtothe unit isdefective, thebatteiyterminalsorwiring on the terminals are corroded,orthebattery needs charging. Unit freezes, locks up, or operates erratically: 1. Electrical noise fromthe boat's motor, trollingmotor,oran accessorymaybe away interfering withthesonarunit. Re-routing thepowerandtransducercables from otherelectrical wiringon the boat mayhelp. Routethe sonarupit's power cabledirectlyto the battery instead of througha fuse blockor ignition switch Mountthe Magnain any convenient location,providedthere is clearance when it's tilted for the best viewing angle. Roles in the bracket's base allow wood screw or throughbolt mounting. It may be necessary to place a pieceof plywood on the back side of thin panelsto reinforce thepanel. Make certainthere is enough room behind the unit to attach thepower and transducercables. 2. Inspect the transducercablefor breaks, cuts, or pinchedwires. 3. Check both the transducerand powerconnectors. Make certain both are securelyplugged in to the unit. Weak bottom echo, digItal readings erratic, or no fish signals: 1. Make certain transduceris pointing straightdown. Clean the face of the transducer. Oil, dirt, andfuelcancauseafilmtoformonthetransducer,reducing its effectiveness. If the transducer is mounted inside the hull, be sure it is shootingthroughonly one layeroffiberglassand that it is securelybondedto the hull. Do NOT use RTV siliconerubberadhesive or MarinetexN. 24 Drilla hole in the dashfor thepowerand transducer cables. The best location for this hole is immediately under the gimbal bracket. This way, the bracket covers the hole. The smallest hole both the power and transducer cables can passthrough is one inch. However, you can't passa poweror transducerconnectorand anothercablethrough 1 PDF compression, OCR, web-optimization with CVISION's PdfCompressor a one inch hole. Therefore, after drilling the hole, pass the transducer connectorup through the hole from underthe dash. Then drop the powercable down from the front side of thedash. Slide the bracket over the hole,then route the transducerand power cablesout the slots in the bracket. Finally, fasten the bracket to the dash. POWER CONNECTIONS SURVEYING A LAKE The Magnaworks from a 12 volt DC systemonly. For thebest results, run thepowercable directlyto theboat's battery. Keep the power cable awayfrom other boat wiring, especially the engine's wires. This will givethe best isolation from electrical noise. If the supplied cable is not long enough to reach the battery, splice#18 gauge insulated wire to it. You can attach the powercableto an accessoryor power buss, however, you may have problemswith electrical interference. See page 26 for more information on electrical noise. The mostsuccessful anglers on any body of water are thosewho fish it day afterday and year after year. Eventually, they learn the hot spots that produce fish consistently. They discoverthrough experiencewhere, and at what depth,they can expect to find the fish they want at any season. And they realizethat these productive areas change throughoutthe year depending on water level, temperature, food, and other factors. With the Magna, anyone can eliminate guesswork and concentrate on the areas where fish are likely to be. Even if it's the first timeon the lake! The mostefficientway to becomeacquainted with a body of wateris to survey it with your Magna. Start with a map of thelake, if possible, and indicatethepromising spots in relation to landmarks on shore. As you go about your ...