User manual EAGLE MAGNA PLUS - OPERATION INSTRUCTION

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 survey, your Magna will tell you the depth and type of bottom. It will also reveal suspended fish. MACNA BLACK 3amp FUSE the Magna indicates a school of fish, throw the buoy out. With the school thus marked, you can make your turn and come backto fish in exactly the right spot. This is essential when you're far from shore on a big lake. Unless you mark the school of fish when you'reover it, you may not be ableto find it again. BAIT FISH The importance of baitfish to successful fishing can't be over-emphasized. They are the principle food of all game fish in most waters. Bait fish are the plankton feeding forage fish, such as minnows and shad. Baitfish can also be the young of game fish, such as crappies, bluegill, and bass. Keep a few marker buoys in the boat, ready to toss overboard. When l2voLr BATTERY MACNA PLUS 3amp FusE Mostbait fish concentrate within five feet of the surface where sunlight thegrowth of theplankton on which they feed. One method of fishing is to usethe Magnato find the bait fish first. Withthe Fish ID featureoff, a school of bait fish will look like a "cloud" on the display. Usually, game fish will be nearby, often directlybeneath the school of bait fish. promotes 23 2 PDF compression, OCR, web-optimization with CVISION's PdfCompressor These units havereversepolarity protection. No damagewill occur if the powerwires are reversed. However, the unit will not work until the wires are attached correctly. SPEEDITEMPERATURE SENSOR INSTALLATION- Magna Plus Only Mountthe speed/temp sensor on theboat'stransom in a location wherethe flow of water is the smoothest. There should be a minimum ofturbulenceand air bubbles in the chosen location. The port (left) side of thetransomis preferred, however, thestarboard(right) side can be used if necessary. Do not mountthespeed sensorbehind strakes, ribs, or thru-hullfittings. These will disturbthe flow of water to the speed sensor. In a typical installation, the speed sensoris mounted six to twelveinchesfrom the centerline of the hull. The sensormust always be in thewater to function properly. Makecertain the chosen location is in thewater evenat high speedor whenthe boat is on plane. Once you determine theproper location, place the sensoron the transom. Makecertain the sensor's bottomis flush with the bottom of the hull. Mark the transomin four places,two in each slot. Drill a 5/ 32" mounting holeat eachlocation. Mountthesensorto the hull with four #10 stainless steel screws. Use a good grade of caulking compound to seal the screws. Adjustthe sensorso it is flush with the bottom of the hull and tightenthe screws. SURFACE LAYER ABSORBS HEAT FROM THESUN EPILIMNION 760 e 750 at THERMOCLINE MOST pRoDucTivE ZONEFOR FISHING 680 660 500 470 Thetemperature of water in the lake is seldom constantfrom top to bottom. Layers of differenttemperatures form, and the junction of a warm and cool layerof water is called a thermocline. The depth and thickness of the thermoclinecan vary with the season or time of day. In deep lakes there maybe twoor more at differentdepths. Thermoclines are important to fishermen because they are areas where fish are active. Manytimes baitfish will be abovethe thermocline while largergame fish will suspend in or just below it. The Magna can detectthis invisible layer in thewater, but the sensitivity will probablyhaveto be turned up to see it. If the base of the transom has a radius, fill the gap between the transomand the sensor with caulking compound. This will help insure a smooth waterflow. Routethe sensor cableto the in-lineconnectoron the Magna Plus' power cable. The speed/temp sensor is now ready for use. 3 22 PDF compression, OCR, web-optimization with CVISION's PdfCompressor KEYBOARDBASICS The unit sounds a tone when you press anykey. This tells you the unit has accepted a command. ON/CLEAR Use this keyto turn the unit on. It also clears menu selections and the menus from the screen. OFF This key turns the unit off. MENU Very small fish probably will not arch at all. Medium sized fish will show a partialarch, or a shapesimilarto an arch if they're in deep water. Largefish will arch, but turn the sensitivity up in deeper water to seethe arch. Because of water conditions, such as heavy surface clutter, thermoclines, etc., the sensitivity sometimes cannot be increasedenough to getfish arches. One of thebest ways to getfish arches is to expand or "zoom" a segmentof the water. For example, from 45 to 60 feet. The smaller the segment, the betterthe screen resolution will be. The easiest way to do this on the Magna is with theZoom feature. This feature expands the echoes, making it easierto see detail. Forthe best results, turn the sensitivity up as high as possible withoutgetting too much noise on the screen. In mediumto deep water, this method shouldwork to displayfish arches. The Magna and Magna Plus have manymenus of features that are accessedwith thiskey. UPand DOWNARROWS Use these keys to adjustvirtuallyeveryfeatureand function on the unit. Use these keys to adjustthe sensitivity, chart speed, range, and more. If you see fish signalswhen the unit is in the manual mode, but don't get fish symbols when the Fish 1.0. feature is on, try increasing the sensitivity. WATER TEMPERATURE AND THERMOCLINES Water temperature has an important-if not controlling-influence upon the activities of all fish. Fish are cold blooded and their bodies are always the temperature of the surrounding water. During the winter, colderwater slows down their metabolism. At this time, they need about a fourth as much food as they consume in the summer. Most fish don't spawn unless thewater temperature is within rather narrow limits. The surface temperature meter built intothe Magna Plus helps identify the desired surface water spawning temperatures for variousspecies. Trout can't survivein streamsthat get toowarm. Bass and other fish eventuallydie out when stockedin lakes that remaintoo cold duringthe summer. While somefish have a wider temperature tolerance than others, each has a certain range within which it tries to stay. Schooling fish suspended over deep water lie at the level that provides this temperature. We assume they are the mostcomfortablehere. 21 L LI NOTE: The up arrow key also stops and startsthechart when no menus are displayed. In otherwords, anytimeyou wish to stopthe chart, first makecertain no menu is on the screen. Then pressthe up arrow key. The chart will freeze and the word "STOP" appears at the top right portion of the screen. To start the chart, presstheup arrow key again. 4 PDF compression, OCR, web-optimization with CVISION's PdfCompressor FISH ARCHES Fish arches are created when the cone of sound passesover a fish. The distanceto a fish when thecone first strikes it is shown as "A" below. When the center of the cone strikes the fish, the distance is shorter as shown "B". As the cone leaves the fish, the distance increases again as shown in "C". DISPLAY- General The lightsflash for about ten secondswhen theMagna is turned on. Three menus appear, one after the other. The menus are the lights (LAMP), feet-meter selection (FEET/METER), and contrast adjustment (DARK/LIGHT). To turn the lights on, press the up arrow key. To switch fromfeet to meters, press the down arrow key when theproper menu appears. To adjust the contrast, wait forthe DARK/LIGHT menu to appear. Now press the up arrow key to darken the screen, the down arrow to lighten it. The menus disappearafter a few seconds. If you don't want to wait, pressthe ON/CLEAR key to clearthe menus from the screen. Whenthe Magna is first turned on, thedisplay appears similar to the one below. The unit is in the automatic mode and the Fish ID feature is on. The depth range displays on the left side of thescreen. In this example, the range is from 0 to 60 feet. The digitalbottom depth display shows at thetop left portionof the screen. BOATS DIRECTION OF TRAVEL LI--373FT 4-C .1 A 1 B a. .'n'..l C MENUS When the Fish l.D. mode is off, the depth of the waterwill affect the size and shapeof the fish arch due to the cone angle diameter. For example, if the cone passesover a fish in shallow water, the signal displayed on the Magna may not arch at all. This is due to the narrow cone diameterand the resolution limitations of the display. The Magnaand Magna Plus use menus to guide youthroughthe unit's functions and features. The menu key accesses these features, allowing you to customize the unitto your particularneeds and water conditions. All you haveto do to leaveone menu and enter another is press the menu key repeatedly. If you ever get lost in the menus, simplypressthe ON/CLEAR key. Thisclears the menus from the screen. 20 PDF compression, OCR, web-optimization with CVISION's PdfCompressor 5 Menus changedependingon the mode the unit is in. For example, if the automatic mode isturned off, thesensitivity menu changes from "AUTO SENS"to "MAN SENS." Other messages may appearin menu boxes or new menus can appear, again depending on previous selections. Both 8 degree and 20 degree transducers give accurate bottom readings, even though the bottom signal is muchwider on the20 degree model. This is because you are seeing more of the bottom. Remember, the shallowedge of the signal shows you the true depth. The rest of the signal tells you whetheryou are over rocks, mud, etc. SIGNAL INTERPRETATION Your Magna gives an accuratepicture of the bottom that your boat is passing. A bottom of firm sand, gravel, shell, or hard clay returns a fairly wide signal. If the automatic mode is off and the signal narrows down, then it means that you have moved over a mud bottom. Mud absorbs the soundwave and returns a weak signal. Turn up the sensitivity to see a better bottom signal. Big rocks or stumps on a smooth bottom send back signals above the bottom level signal. The height of thesignal depends on thetarget's height. As you pass over a post, it should be clearly visibleas a short line extending above the bottom signal. OPERATION AUTOMATIC When the Magna is first turnedon, the automatic feature is enabled. This feature automatically adjusts the unit's range and sensitivity according to waterconditions. It always keepsthe bottom depth displayed in the lower portion of the screen. AUTO To turn theautomaticfeature off, pressthe menu key until the AUTO/MAN menu appears. Now pressthe down arrow key. This highlightsthe letters "MAN." The unit is now in the manual mode. Wait a few secondsand the menu will scroll offthe screen's left side. Pressing the ON/CLEAR key also clears it. To turn the automatic featureon again, repeatthe above steps, except this time press theup arrow key. RANGE A steep slope returns a wide signal, thesteeperthe wider. Signals returned from a high underwater cliff are usually the widestof all. You can't adjust the rangewhen the Magna is in the automatic mode. It is adjustable whenthe unit is in the manual mode, however. To do so, first put the unit in the manual mode. Nowpressthe ON/ CLEARkey to clear thescreen. Then pressthe menu keyuntil the"RANGE SEL" menu appears as shown. The current range showsat the bottom of the menu. In thiscase, the range is 60 feet. Nowpress theup arrow key to decrease the range, the down arrow key increases the range. After you selectthedesired 6 PDF compression, OCR, web-optimization with CVISION's PdfCompressor 19 TRANSDUCER CONE ANGLES range, press the ON/CLEAR key to clearthe display. seconds, it will automatically clear. ZOOM If you wait a few The soundwaves from the transducer spread out intothe water in a cone shaped beam. This looks much likethe beam from a flashlight. The anglebetweentheoutside edges of the cone is the cone angle. Eagle offers a choiceof transducers with either an 8 or 20 degree cone angle. The transducer supplied with the Magna has a 20 degree cone angle. Typically, wide cone angle transducers (20 degrees) are ideal for operating in shallowto mediumwater depths. The 20 degree cone angle allows you to see more ofthe underwater world. In 15 feet of waterthe 20 degreecone covers an area about six feet across. The 8 degree transducer covers only about a two foot circle. The zoom feature enlargesall echoeson thescreen. If the unit is in the automatic mode, it tracks thebottom signal, always keeping it near thebottom of the screen. This lets you see smalldetail, at thesame time enlarging all echoes that appearon the screen. The unit doesn't track the bottom in the manual mode, and the adjustments are slightly different. Zoom - Automatic Operation To zoomthedisplay, first press the MENU key until the RANGE/ ZOOM menu appears. Nowpress the down arrow key. This switches theunit intothe zoom mode. A new menu immediately appearsas shown on the right. The 20 degreetransducer is almost always the best to use in fresh water, the 8 degree mostly in salt water. In a deep water environment, (300 feet - fresh water, 100 feet - salt water)the narrowcone angle is moredesirable. Since the sound energy is concentrated in a smaller area, it can penetrateto much deeper depths. RANGE 50' 100' 150' 200' 20 DEGRE: 18 8 DEGREE This is the zoom size menu. Zoom size is the distancebetween the upper limit and the lower limit. The upper limit shows at the top left corner of the screen. The lower limit is in the bottom left corner. For example, if the upperlimit is 40 feet and the lower limit is 70 feet, the zoom window size is 30 feet. The word "TRACK"appearsin this menu when you first activatethe zoom. This meansthe Magna is trackingthebottom in a zoom window, always keeping it on the display. PDF compression, OCR, web-optimization with CVISION's PdfCompressor 7 Presstheup arrow key to decreasethe zoom size, pressthe down arrow keyto increase the zoomsize. When the unit is switched into the zoom mode,the letters "ZM" appearat thetop ofthe screen. Thezoom windowsize C ZM---2O 3IAFT SIZE ·wa 2OFT ZOOM displaysin thetop right corner of the screen. To turn thezoom feature off, press the menu key until the RANGE/ZOOM menu appears. Now pressthe up arrow key. This switchestheunit intothe rangemode, which turns the zoom featureoff. Zoom - Manual Operation To operatethezoom feature whenthe Magnais in themanual mode, first pressthe menu key. Then press the down arrow key in the RANGE/ZOOM menu to place the Magna __________________ in the zoom mode. The zoom size menu ZM----EO automatically appearsnext. You can changethe zoom size by pressing the up or down arrows. After you selectthe desiredzoom size, pressthe menu key until the "MOVEZOOM" menu appears. This menu lets you move thezoom windowup or down in one foot increments by pressingthearrow keys. Thus, you can movethezoomwindowup towards the surface,downto the bottom, or anywhere in between. The window stays ____________________ where you putit. It doesn'ttrack the bottom signal. C until the DARK/LIGHT menu appears. To decreaseit, press thedown arrow key. Press the up arrow key to increasethe contrast. The bar graph in the Dark(Light menu boxshows a graph of the contrast. The screen will also showthe effectsof the change. If you reach the maximum or minimum level, atonesoundsalerting you to the limits. The menu will clear automatically after a few seconds or you can press the ON/CLEAR key to clearthescreen. To adjustthecontrast,press the menu key ASP (Advanced Signal Processing) .i-- --J;; C 344FT C ASP is a programembedded in the Magna'scomputerthat is specifically designed to eliminate noise. It continually monitors the signals fromthe receiver, determines which echoes are noiseand rejects them. This allows true target echoes to display on the screen with a minimum of clutter. This feature is espe ___________________ cially usefulsince it typicallylets you operatethe boat at all speeds withoutadjusting thesensitivity or other controls. When the Magnaor Magna Plus is first turned on, ASP is enabled. To turn ASP off, press the menu key repeatedly until the ASP menu appears. Nowpress the up arrow to turn it on or the down arrow to turn it off. The menu will clearautomatically aftera few secondsor you can presstheON/CLEAR key to clearthe screen. To turn thezoom feature off, press the menu key until the RANGE/ ZOOM menu appears. Now press theup arrow key. This switches theunit intotherange mode, which turns thezoom featureoff. 8 17 PDF compression, OCR, web-optimization with CVISION's PdfCompressor LAMP SENSITIVITY The Magnaand Magna Plus' display is backlighted for night use. To turn the backlights on or oft, press the menu key repeatedly until the LAMPmenu appears. Now press the up arrow to turn the lights on or thedown arrow to turn them off. The menu will clear automatically after a few seconds or you can press the ON/CLEAR key to clearthe screen. 373FT ect I LAMP ______ ___________ a-: The sensitivity menu lets you control the unit's abilityto pick up echoes. A low sensitivity level excludes much of thebottom information, fish signals, and other detail. High sensitivity settingslets you see features, but it can also clutterthe screen with noise and other unwanted signals. Typically, the bestsensitivity level shows a good, solid bottom signal with grayline. The Magna adiuststhesensitivity level to keep a solid bottom signal on thescreen. It adds a little extra when it's in the automatic mode. This gives it the capability to showfish and other detail. However, situationsoccur whereit becomes necessary to increase or decrease thesensitivity level. Typically,this occurswhen you wish to see more detail, so you need to increase the sensitivity. The procedure to adjust it is thesamewhetherthe unit is in the automatic or manual mode. FEET/METER The Magnaand Magna Plus can show the depth in feet or meters. The Magna Plus can also showtemperature in degrees Fahrenheit or Celsius,speed in statute miles per hour or knots, and distance (log) in statute miles or nautical miles. When either unit is in the metric mode, all depth readings, ranges, zooms, and alarm settingsare in meters. When a unit is in the feet mode, all ofthe abovesettings are in feet. To change the sensitivity level, first press the menu key until the sensitivity menu appears. If the unit is in automatic, the FEET menu shows "AUTO SENS." Otherwise, the menu shows "MAN SENS." Now press the up arrow key to increase the sensitivity, the down arrow to decrease it. A verticalbar graph in the menu box It--37·3FT na iSENS AUTO To change from feet to metersor vice-versa, press the menu keyuntil the FEET/METER menu appears. Press the down arrow key to switch to metric, the up arrowto switchto feet. Displays show in feet when the unit is firstturned on. The menu will clear automatically after a few seconds or you can pressthe ON/CLEAR key to clearthe screen. shows the sensitivity level. Echoes scrolling onto the screenwill also show the effectsof thesensitivity change. If you reach the maximum or minimum sensitivity level, a tone sounds alerting youto the limits. After you've adjusted the unitto the desired sensitivity level, press the ON/CLEAR key to clearthe display. If you wait a few seconds, it will automatically clear. DISPLAYCONTRAST The unit'sdisplaycontrastis adjustable to suit differentlighting conditions. Thiswill help you see the screen from differentangles, or at varioustimes of theday. GRAYLINE° Grayline lets you distinguish between strong and weak echoes. It "paints" gray on targetsthat are strongerthan a preset level. This shows the differencebetweena hardor soft bottom, large fish versus smallerones, or rocks and brush on the bottom. For example, a soft, muddy, or weedy bottom returns a weaker signal which shows a PDF compression, OCR, web-optimization with CVISION's PdfCompressor 16 9 narrowor no gray line. A hard bottom returns a strong signal that causes a wide gray line. If you havetwotargets of equalsize, one with gray and the other without,the targetwith gray is thestrongerecho. This helps distinguish fish from structure, or the larger fish from a smallerone. Grayline®is adjustable. Since it showsthe difference between strong and weak echoes, changing the level may require a different sensitivity setting. DEPTH ALARMS The depth alarms are triggered only by the bottom signal. No other echoes will activatethesealarms. The depth alarms consistof a shallowand deep alarm. Theshallowalarm sounds an alarm tone when the bottom goes shallowerthan thealarm'sselling. The deep alarm soundsa tone when the bottom goesdeeperthan it's setting. Both alarms adjust thesame, althoughthroughdifferentmenus. To changetheGraylinelevel, first press the MENU key until the Grayline menu appears. Now pressthe up arrow key to increase the level, the down arrow to decreaseit. The bar graph in the Grayline menu box shows the level of Graylinenow in use. Echoesscrolling onto the screen will also showthe effects of theGrayline change. If you reach the maximum or minimum level, a tone soundsalerting you ShallowAlarm To set theshallowalarm, press the menu key repeatedly until the "SHALALARM" to increase thedepth,theup arrow key decreasesit. The number in the shallow menu appears. Press the down arrow key to the limits. The level chosen by the Magna when it's firstturned on is usually adequate for mostconditions. Experiment with your unit to find the Grayline selling that's best. FISH ID FEATURE alarm's menu box showsthe current shallowalarm setting. When the number reaches the desired setting, release the arrow key. Press the ON/CLEAR key to removetheshallowalarm menu from the screen. Nowwhen the bottom depth goes shallowerthan the alarm's setting an alarm tone sounds. At the sametime the alarm sounds, a message box appears on the screen as shown below. 373FT act ALARM MUTE The Fish ID feature identifies targetsthat meet certain conditions as fish. The micro-computer analyses all echoes and eliminates surface clutter, thermoclines, and other undesirable signals. In most instances, remaining targets are fish. The Fish ID feature displays symbols on the screen in placeof the actual fish echoes. Thereare four symbolsizes: tiny, small, medium,and large. These show the relative size between targets. In other words, it displaysa small fish symbolwhen it thinks a target is a small fish, a mediumfish symbolon. a largertarget, etc. The micro-computer is sophisticated, but it can be fooled. It can't distinguish between fish and othersuspendedobjects such as turtles, submerged floats, air bubbles, etc. Individual tree limbs extending outwards from a groupof limbs are the hardestobjectsfor the Fish ID 10 SHAL .e-c Press the up arrow key to silence the alarm. Thiswill turn thealarm sound off until theshallowalarm is triggered again. a -- To turn the alarm off, press themenu key until the shallow alarm menu appears. Then press the up arrow key until the word "OFF" appears. . - 60 Deep Alarm The deep alarm adjusts the same as theshallowalarm. Use the "DEEPALARM"menu to adjust the deep alarm. Whenthe bottom signalgoes deeper than thesetting,an alarm tone sounds. 15 PDF compression, OCR, web-optimization with CVISION's PdfCompressor DISPLAYMODE (cont.) DIG 1 (Digital #1) This is the first digital only screen. It showsthe digitaldepth displayatthetopof the screen in very large numbers. The sha!low and deep alarm settings are displayed beneath the digital depth. No chart shows on this screen. [60.8] I SHAL ALM L DEPTH FT feature to distinguish from fish. You may see Fish ID symbols on the screen when, in fact, there are no fish. Practice with the unit when the Fish ID feature is on and off to becomemorefamiliarwith Fish ID. When the Magnais first turned on, the Fish ID feature is automatically turned on, also. To turn this featureoff, pressthe menu key until the Fish ID feature'smenu appearsas shown below. Now pressthe down arrow key. This turns the feature off. To turn it back on, repeat the abovesteps, but press the up arrow key instead. I L OFT OFT 373FT FISH ID DEEP ALM DIG 2 (Digital #2) The digital depth displayshowsat the top of this screen in very large digits. The digital temperature,speed, and log shows beneath the depth. The log starts counting whenthe Magna Plus is first turned on. When the Magna Plus is turned off, the log is reset to zero. [38.3] °F I 76.8 ISPEED MPH 33.8 L L DEPTH FT TEMP The Fish ID feature can't be usedwhen the Magna is in the manual mode. If you turn the automatic feature off, the Fish ID feature will afflomatically be turned off, also. CHARTSPEED The rate echoes scroll acrossthescreen is called the chart speed. It's adjustable by pressing the menu key until the chart speed menu ____________________ appears. Chart speed is set to maximum when the Magna is first turned on. To decreaseit, pressthedown arrow key. Press the up arrow key to increase the speed again. The bar graph in the Chart CHART ·1 Speed menu box shows a graphof the SPEED speed. Echoes scrolling onto the screen will also showthe effects of the change. If you reach the maximum or minimum level, an warning tone sounds. I L LOOMI 81.9 IC--- '373FT 4Ct ALARMS FISH ALARM The Fish Alarmsounds atone when a fish symbolappears on the screen. To usethe fish alarm, press the menu key until the "FISH ALARM"menu appears on the screen. Now press the up arrow key to turn thealarm on. Repeatthe above steps to turn the fish alarm off. (Note: If the Fish ID feature is off, it will be turned on when you turn thefish alarm on.) 14 C-- -- -STOP 373FT To stop the chart, first clear any menu from thescreenby pressing the ON! CLEAR key. You can't stop the chart while a menu is displayed. Now pressthe up arrow key. The chart will freeze and the word "STOP" appearsat the top right portion of the screen. To start the chart, press the up arrow key again. 11 PDF compression, OCR, web-optimization with CVISION's PdfCompressor DISPLAY MODE The Magna hasthree differentscreen modes. The Magna Plus has six. To change modes, press the MENU key until the "DISP MODE" (DisplayMode) menu appears. Then presstheup or down arrow keys until thedesired mode numberappears. The modes are as follows: MACNA ONLY CHT 1 (Chart #1) This is thedefault mode used when the Magna is firstturned on. It hasthefollowing features: 1. Automatic On 2. Fish ID FeatureOn 3. Digital Depth Display On DISPLAYMODE (cont.) MACNA PLUS ONLY CHT 1 (Chart #1) This is thedefault mode used when the Magna Plus is first turned on. It hasthe following features: 1. Automatic On 2. Fish ID FeatureOn 3. Dig'dal Depth Display On 373FT MODE oIsP tt e-c 37_3FT oIsP MODE t.ct CHT1 211---- 3IAFT 743°F t4.c -.n'%fl 'r- CHT 2 (Chart #2) Sameas Chart #1 plus digital surface watertemperature display. CHT 2 (Chart #2) This is the High Speed Scroll mode, It shiftsthechart speed into high gear, scrolling echoes at a high rate. It has the following features: C 3III4FT CHT 3 (Chart #3) Same as Chart#1 plus digital speed display. ZM----20 47MPH 1. AutomaticOff 2. Fish ID Feature Off 3. Digital Depth Display Off DEPTH FT DIG 1 (Digital #1) This is thedigitalonly screen. It showsthe digitaldepth display atthetopofthe screen in very large numbers. The shallow and deep alarm settingsare displayed beneaththedigitaldepth. No chart shows on this screen. C CHT 4 (Chart #4) This is theHigh Speed Scroll mode. It shiftsthechart speed into highgear, scrolling echoes at a high rate. It hasthe following features: 1. Automatic Off 2. Fish ID Feature Off 3. All Digital Displays Off [60+8. I SHAL ALM I. I L OFT OFT DEEP ALM 60 12 , ____ PDF compression, OCR, web-optimization with CVISION's PdfCompressor 13