User manual EAGLE FISH I.D. II - OPERATION INSTRUCTION

p Magna II and Magna II Plus INSTALLATION AND OPERATION INSTRUCTIONS LITHO IN U.S.A. 988-0106-56 EAGI 1TM PDF compression, OCR, web-optimization with CVISION's PdfCompressor INTRODUCTION INSTALLATION POWER CONNECTIONS SPEEDTrEMPERATURE SENSOR KEYBOARD BASICS DISPLAY MENUS OPERATION AUTOMATIC RANGE ZOOM- Automatic Operation ZOOM- Manuai Operation SENSmVITY GRAYLINE® FISH ID CHARTSPEED DISPLAY MODE ALARMS FISHALARM DEPTHALARM LAMP FEET/METER DISPLAY CONTRAST ASP (Advanced Signal Processing) SIDESCAN SIDESCAN RANGE . TABLE OF CONTENTS Copyright © 1991, 1990 Eagle Electronics All rights reserved. 1 1 2 3 4 5 5 6 6 6 7 8 9 10 11 12 14 14 15 16 16 16 17 - Is 18 19 19 20 21 SIDESCAN-ALARM MENU SUMMARY TRANSDUCERS AND CONE ANGLES SIGNALINTERPRETATION FISHARCHES WATER TEMPERATURE ANDTHERMOCUNES SURVEYINGALAKE BAITFISH SONAR TROUBLESHOOTING 22 23 25 25 26 All featuresand specifications subjectto Changewithout notice. All screens in this manual are simulated. PDF compression, OCR, web-optimization with CVISION's PdfCompressor 4. Theboat must be moving ataslowtrollingspeedto seefisharches. lithe boat is motionless, fish stay In the cone,showingon the displayas straighthorizontal lines. INTRODUCTION ELECTRICAL NOISE Amajorcauseofsonarproblems iselectricalnoise. This usually appearsonthe sonar's display as randompatterns of dots or lines. In severe cases, it can coverthe screen withblack dots, orcause the unit operateerraticly, completely or not at all. the To eliminate or minimize the effects of electrical noise, first tryto determine cause. Withtheboat at rest in the water,thefirstthing you shoulddo is turn all electrical equipmenton the boat off. Make certain the engine is off, also. Turn yourMagnaon, then turn off ASP(AdvancedSignal Processing). There should be a steadybottom signal on the display. Now turn on each piece of electrical Forexample, equipment onthe boat and view theeffect on the sonar'sdisplay. noise. If no noise is present, turn on thebilgepump andviewthesonardisplayfor turn the pumpoff,then turn onthe VHFradioand transmit. Keepdoingthis until all electrical equipment has been turned on, their effect on the sonar display noted, then turned off. Thankyouforpurchasing an Eaglesonar. Your MagnaII or MagnaII Plus is a highquality sonar designed forboth professional and novice fishermen. These unitshave an automatic feature that finds and displaysthe bottom, fish, structure, and more! All you haveto do is pressthe on key. However, if youwish to fine tune the unit, allyou haveto do is press the menu key. The Magna series has powerful features available through easy-to-use menus. To getstartedwith your Eagle unit,first readtheinstallationsection. This is whereit all begins. Improperinstallation cancause problems downthe road. Afteryou'vereadtheinstructions, installtheunit,then readtherest of the manual. The more you know about your unit, the better it will performfor you. Take this manual for referencewhen you head for the water. INSTALLATION is MounttheMagna IIin anyconvenient location, providedthere clearance whenit'stiltedforthe bestviewingangle. Holesinthebracket's baseallow wood screwor through bolt mounting. It may be necessary to place a piece of plywood on the back side of thin panelsto reinforce the panel. Makecertain thereis enoughroom behind theunitto attachthepowerand transducer cables. Ifyou find noiseinterference from an electricalinstrument, trolling motor,pump, or radio, try to isolate the problem. You can usually re-route the sonar unit's certainto keepthe sonar'swires awayfrom it. Youmayneedto routethe sonar unit'spowercable directlytothe batteryto Isolate itfromotherwiringontheboat. that Is causing the power cable and transducercable away from the wiring cablesradiatenoisewhentransmitting, so be interference. VHFradio antenna If no noise displays on the sonar unit from electrical equipment, then make certain everything except the sonar unit is turned off, then stall the engine. Increase the RPMwiththe gearshiftin neutral. If noise appears on the display, the problem couldbe one of threethings;spark plugs, alternator, ortachometer liters, orrouting thesonarunit's wiring. Try using resistorsparkplugs, alternatorf cable awayfromenginewiring. Again,routingthe powercabledirectlyto power the batteryhelps eliminatenoiseproblems. Makecertain to usethe in-line fuse the battery. supplied withthe unit whenwiringthe power cableto When no noise appears on the sonar unit after all ofthe above tests, then the noise source is probably cavitation. Many novices or persons with limited in shallow experience make hasty sonar installations which function perfectly In nearlyallcases, thecause ofthemalfunction water, orwhentheboat is atrest. will be the location and/orangle of the transducer. The face of the transducer must be placedin a location that has a smoothflowof water at all boat speeds. Readyourtransducerowners manualforthe best mounting position. Drill a hole in the dash for the power and transducercables. The best locationfor this hole is immediately underthegimbal bracket. This way, the bracket covers the hole. The smallest hole both the power and transducer cables canpassthrough isone inch. However, you can'tpass a poweror transducer connectorand another cablethrough a one inch 1 PDF compression, OCR, web-optimization with CVISION's PdfCompressor 28 throughthehole from underthedash. Thendropthepowercabledown fromthefrontside ofthedash. Slidethebracket overthehole,then route the transducerand power cables out the slots in the bracket. Finally, fastenthe bracketto thedash. POWER CONNECTIONS The Magna II worksfrom a 12 volt DC system only. Forthebestresults, wnthe powercable directlyto the boat'sbattery. Keep thepowercable awayfromother boat wiring, especially theengine's wires. This will give the best isolation from electrical noise. If thesuppliedcable is not long enoughtoreachthebattery, splice #18 gaugeinsulated wire to it. You can attach thepowercableto an accessory powerbuss, however, you may or have problems with electrical interference. See page 28 for more information on electrical noise. hole. Therefore,afterdrilling the hole, passthe transducer connector up Weak bottomecho, digital readings erratic,or no fish signals (cont.): 2. Electrical noisefromtheboat'smotorcaninterfere withthesonar. Thiscauses the sonarto automatically increase its Discrimination or noise rejection feature. Thiscancausethe unit toeliminate suchasfishoreven structure weakersignals from the display. 3. The water maybe deeperthan the sonar's ability to findthe bottom. If the sonarcan'tfindthe bottomsignalwhileit's in the automatic mode, the digitalwill flashcontinuously. It may changethe range to limits fargreaterthan the water you are in. Ifthis happens,placethe unit in the manualmode, then changethe one, (forexample, 0-100 feet) and increase thesensitivity.As range to a realistic you move into shallowerwater, a bottom signalshould appear. 4. Checkthe batteryvoltage. Ifthe voltage drops,the unit'stransmitter power also drops, reducing its ability to find the bottom or targets. Bottom echo disappears at highspeeds or erratic digitalreading or weak bottom echo whileboat Is moving 1. The transducermay be in turbulentwater, It must be mounted in a smooth flow ofwater in orderforthe sonarto workat all boatspeeds. Airbubblesin the water disruptthe sonar signals, interfering with its abilityto find the bottom or othertargets. The technicalterm forthis is 'Cavitation'. MAGNA II BLAcK 3amp FUSE 2. Electrical noisefromtheboat'smotorcaninterfere withthesonar. Thiscauses the sonarto automatically increaseits Discrimination or noise re]ection feature. Thiscan cause the unit to eliminate weakersignals suchasfish oreven structure fromthe display. Try using resistorsparkplugsor routing thesonarunitspower and transducercablesaway from other electrical wiring on the boat. No fish arches when the Fish ID feature Is off: 1. Makecertain transduceris pointingstraightdown. This is the most common problemif a partialarch is displayed. Seethe FishArch sectionin your owners manual formore information. 2. The sensitivitymay not be highenough. In orderforthe unit to displaya fish arch, it has to be ableto receive the fish's echo from the time it enters the cone until it leaves. ftthe sensitivityis nothighenough,the unitdisplaysthefish only when it is in the center of the cone. 3. Usethe Zoom feature, It is much easierto displayfish arches whenzoomed in on asmall range ofwaterthan a largeone. Forexample, you will have much betterluckseeingfish arches witha30 to 60foot range thana 0to 60foot range. Thisenlarges the targets, allowingthe displayto show much more detail. 12 VOLT BATrERY MACNA II PLUS 3 amp FUSE 2 PDF compression, OCR, web-optimization with CVISION's PdfCompressor 27 IMPORTANT SERVICE INFORMATION! If yourunit is notworking,or if you need technical help, pleaseusethe following troubleshooting section before contactinga service centeror the factory customerservice department. Itmaysaveyouthetroubleofreturning yourunit. See the HowTo Obtain Service section on page 29 if you needservice. SONAR TROUBLESHOOTING Theseunitshavereversepolarity protection. No damagewill occurif the powerwires are reversed. However, theunitwill not work until the wires are aftached correctly. SPEED/TEMPERATURE SENSOR INSTALLATION- Magna II Plus Only Mountthespeed/temp sensor on the boat's transomin a location where the flow of water is the smoothest. There should be a minimum of turbulenceand air bubblesin the chosen location. The port (left)side of thetransomis preferred, however, thestarboard (right) side can be used ifnecessary. Do notmountthe speed sensorbehindstrakes, ribs, orthruhull fittings. Thesewill disturb the flow of waterto the speed sensor. In a typical installation, the speed sensor is mounted six to twelve inches fromthecenterline ofthehull. The sensormustalwaysbe in thewaterto function properly. Makecertain the chosen locationis in the water even at high speed or whenthe boat is on plane. Onceyoudeterminetheproper location, placethesensoronthetransom. Makecertain thesensor's bottom is flushwith the bottomofthehull. Mark the transomin four places, two in each slot. Drill a 5/32" mounting hole at eachlocation. Mount thesensortothe huH withfour#10 stainless steel screws. Use a good grade of caulking compoundto seal the screws. Adjustthesensorso it is flush with the bottom of the hull and tightenthe screws. Unitwon't turnon: 1. Checkthe powercable'sconnection at the unit. Also checkthe wiring. 2. Make certain the power cableis wired properly. The red wire connects to the positive batteryterminal, blackto negativeor ground. 3. Check the fuse. 4. Measure thebatteryvoltageatthe unit'spowerconnector.Itshouldbe atleast 11 volts. ifit isn't, the wiring tothe unit isdefective,thebatteryterminals orwiring on the terminals are corroded,or the battery needs charging. Unit freezes, locks up, or operates erratically: cablesaway interfering withthesonarunit. Re-routing the powerandtransducer from other electrical wiringon the boat may help. Route the sonarunit's power cabledirectlytothe battery insteadof througha fuse blockor ignition switch 2. Inspect the transducercablefor breaks,cuts,or pinchedwires. 3. Check both the transducerand power connectors. Make certain both are securelyplugged in to the unit. Weak bottomecho, digitalreadingserratic, or no fish sIgnals: 1. Make certain transducer is pointingstraightdown. Clean the lace of the transducer. Oil, dirt, andfuelcancauseafilmtoformonthetransducer, reducing its effectiveness. If the transducer Is mounted inside the hull, be sure it is shooting through only one layer of fiberglass andthat it issecurelybondedtothe hull. Do NOT use RN silicone rubberadhesive or Marinetexm. 26 1. Electrical noisefromthe boat's motor, trolling motor, oran accessorymaybe If the base of the transomhasa radius, fill thegap between thetransom and the sensorwith caulking compound. This will help insure a smooth waterflow. on Route the sensor cabletothe in-line connector theMagnaPlus' power cable. The speed/temp sensoris now ready for use. 3 PDF compression, OCR, web-optimization with CVISION's PdfCompressor KEYBOARDBASICS The unit sounds a tone when you press anykey. Thistells youthe unit has accepted a command. ON/CLEAR SURVEYING A LAKE Use this keyto turn the unit on. It also clears menu selections and the menus from the screen. OFF The most successful anglers on any body of waterare those who fish it day after day and year after year. Eventually, they learn the hot spots that produce fish consistently. They discoverthrough experience where, and at what depth, they can expect to find the fish they want at any season. And they realizethat these productive areas change throughout theyear depending on waterlevel, temperature, food, and otherfactors. With the Magna II, anyonecan eliminateguesswork and concentrate on theareas wherefish are likelyto be. Even if it's thefirsttimeon thelakel The most efficientway to becomeacquainted with a bodyof water is to surveyit with your MagnaIl. Start with a map of the lake, if possible, and indicatethe promising spots in relation to landmarks on shore. As you go about your survey, your Magna II will tell you the depth and type of bottom. It will also reveal suspended fish. Keep a few marker buoys in the boat, ready to toss overboard. When the Magna II indicates a school of fish, throw the buoy out. With the school thus marked, you can make your turn and come back to 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're over it, you may not be ableto find it again. BAIT FISH The importance of bait fish to successfulfishing can't be over-emphasized. They are the principlefood of all game fish in most waters. Bait fish are the plankton feeding forage fish, such as minnows and shad. Bait fish can also be the young of game fish, such as crappies, bluegill, and bass. Most bait fish concentrate within five feet of the surface where sunlight promotes the growth of the plankton on whichtheyfeed. One method of fishing is to use the Magna II to find the bait fish first. With the Fish ID feature off, a school of bait fish will look like a "cloud" on the display. Usually, game fish will be nearby, often directly beneath the school of bait fish. This key turns the unit off. MENU The Magna II and Magna II Plus havemanymenus of featuresthat are accessedwith this key. UP and DOWNARROWS Use these keysto adjustvirtuallyeveryfeatureand functionon the unit. Use these keys to adjustthe sensitivity, chart speed, range, and more. -'I I NOTE:The up arrowkeyalso stops and starts the chart whenno menus are displayed. In other words, anytime you wish to stopthe chart, first makecertain no menu isonthescreen. Thenpress theuparrow key. The chart will freezeand the word "STOP"appears at thetop right portionof the screen. To start thechart, press the up arrow key again. 4 25 PDF compression, OCR, web-optimization with CVISION's PdfCompressor DISPLAY - General The lights flash for about ten seconds when the Magna II 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 turnthe lights on, pressthe up arrow key. To switch from feet to meters, pressthe down arrow key when the proper menu appears. To adjust the contrast, wait for the DARK/LIGHT menu to appear. Nowpress theup arrow keytodarkenthe screen, thedownarrow to lighten it. Themenus disappearaftera few seconds. Ifyou don't want to wait, press the ON/CLEAR key to clear the menus fromthe screen. WhentheMagnaII is firstturnedon,thedisplayappears sirnilartotheone below. The unitis in the automatic mode andthe FishIDfeatureison. The depth range displays on the left side of the screen. In this example, the range is from 0 to 60 feet. The digital bottomdepth display shows atthe top left portion of the screen. 750 THERMOCLINE MOSTpRbDucTIvI ZONE FORFISHING SURFACE LAYER ABSORBS HEAT FROM THESUN EPILIMNION El373FT 4C 560 VARIESINDEPTh DUETO WIND. 500 470 The temperature of water in the lake is seldom constant from top to bottom. Layers of different temperatures form, and the junction of a warm and cool layer of water is called a thermocline. The depth and thickness of Ihe thermoclinecan vary with the season or time of day. In deep lakes there maybe two or more at differentdepths. Thermoclines are important to fishermen becausethey are areas where fish are active. Many times baitfish will be abovethe thermoclinewhilelargergame fish will suspend in or just below it. The MagnaII candetectthis invisiblelayer in the water, but thesensitivity will probably have to be turned up to see it. 24 MENUS TheMagnaII and Magna II Plus usemenustoguideyouthroughtheunit's functions and features. The menu key accesses thesefeatures, allowing you to customize theunit to your particular needs and water conditions. All you have to do to leaveone menu and enteranotherispressthemenu key repeatedly. If you ever getlost in the menus, simply presstheON/ CLEARkey. This clearsthe menus from the screen. 5 PDF compression, OCR, web-optimization with CVISION's PdfCompressor Menus changedependingon the mode the unitis in. For example, lithe automaticmode is turnedoff, thesensitivity menu changesfrom "AUTO SENS"to "MAN SENS." Othermessages mayappearin menu boxesor new menus can appear, againdepending on previous selections. OPERATION Very small fish probablywill not arch at all. Medium sized fish will show a partial arch, or a shape similar to an arch if they're in deep water. Largefish will arch, but turn 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 segmentofthewater. For example, from45to 60 feet. The smallerthe segment, the betterthe screenresolution will be. The easiest way to do this on theMagna II is with the Zoom feature. Thisfeature expandsthe echoes, making it easier to see detail. For the best results, turn the sensitivity up as high as possible withoutgetting too much noise on the screen. In medium to deep water, this method should work to display fish arches. If you seefish signals whenthe unitis inthe manual mode, but don't get fish symbols when theFish 1.0.feature is on, try increasing the sensitivity AUTOMATIC When the Magna II is first turned on, the automatic feature is enabled. This feature automatically adjusts the unit's range and sensitivity according to water conditions. It alwayskeepsthe bottom depth displayed in the lower portionof the screen. 373FT IJTO MAN 't To turn the automatic featureoff, press the menu key until the AUTO/MANmenu appears. Now pressthedown arrow key. This the highlights letters"MAN." The unitis now inthe manual mode. Waitafew seconds and the menu will scroll off the screen's leftside. Pressing the ON/CLEAR key also clears it. ____________________ on Toturnthe automaticleature again, repeattheabove steps,except this time press the up arrow key. RANGE WATERTEMPERATURE 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, colder water 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 the water temperature is within rather narrow limits. The surface temperature meterbuilt intotheMagna Plus helps identify the desired surface water spawning temperatures for various species. Trout can't survive in streams that get too warm. Bass and otherfish eventuallydie out whenstocked in lakes that remain too cold during the summer. While somefish havea widertemperature tolerancethan 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 most comfortable here. 23 themanual mode. Now press theON/CLEAR keytoclearthescreen. Thenpressthemenu key until the "RANGE SEL" menu appears as shown. The current range shows at the bottom of the menu. In this case, therange is 60 feet. Now press the up arrow key to decrease the range, the down arrow key increases the range. After you select the desired range, pressthe ON/CLEAR key to clearthedisplay. If you wait a few seconds, it will automatically clear. 6 You can't adjusttherange when the Magna II is in the automatic mode. It is adjustable whenthe unit is inthemanual mode,however. To do so,first puttheunitin PDF compression, OCR, web-optimization with CVISION's PdfCompressor FISH ARCHES The Magna II and II Plus havethefollowingranges: 10, 20, 40, 60, 120, 240, 480, and 900 feet. and Fish arches are created when the cone of sound passesover a fish. The distance to a fish when the cone 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 increasesagain as shown in "C". BOATS DIRECTION OF TRAVEL 5, 10, 20, 40, 60, 100, 200, and 300 meters. ZOOM The zoomfeatureenlarges all echoes on thescreen. Ifthe unit is in the automatic mode, it tracks the bottom signal, always keeping it near the bottom of the screen. This lets you see small detail, at the same time enlargingall echoes that appearonthescreen. Theunitdoesn'ttrackthe bottom in themanual mode, and the adjustments are slightlydifferent. Zoom - AutomaticOperation To zoom the display, first pressthe MENU keyuntil the RANGE/ZOOM thezoommode. A new menu immediately appearsas shown ontheright. This isthezoomsizemenu. Zoomsize is thedistancebetween theupper limit andthelowerlimit. The upperlimit showsatthetopleftcornerofthe menu appears. Nowpressthedown arrow key. This switches the unitinto 37jFT act RANGE I A a B Jr C Whenthe Fish l.D. mode is off, thedepth of the waterwill affect thesize and shape of the fish arch due to the cone angle diameter. For example, if the cone passes over a fish in shallow water, the signal displayedon theMagna II may not arch at all. This is due to thenarrow cone diameter and the resolution limitations of thedisplay. 22 screen. The lower limit is in the bottom leftcorner. For example, if the upper limit is 40 feet and thelower limit is 70 feet, thezoomwindowsize is30 feet. Theword'TRACK" appearsinthis menu whenyoufirst activate the zoom. This means the Magna II is tracking the bottom in a zoom window,always keeping it on thedisplay. Presstheup arrow keyto decrease zoom size, pressthedown arrow the to increase the zoom size. key 7 a ZI1----20 3IAFT ZOOM SIZE ·c TRACK C PDF compression, OCR, web-optimization with CVISION's PdfCompressor TheMagna II and II Plus have the following zoom ranges: 10, 20, 30, 60,120,240, and 480 feet and 5, 10, 20, 30, 50, 100, and 150 meters. Both 8 degree and 20 degree transducers give accurate bottom readings, even though the bottom signal is much wider on the 20 degree model. This is becauseyou are seeing more of the bottom. Remember, the shallowedge of the signal shows you the true depth. The rest of thesignaltells you whetheryou are over rocks, mud, etc. SIGNAL INTERPRETATION Your Magna II gives an accurate picture ofthebottom that your boat is passing. A bottom of firm sand, gravel, shell, or haitI 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 sound wave 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 the signal dependson the target's height. As you pass over a post, it should be clearly visible as a short line extending abovethe bottom signal. When the unit is switched into the zoom mode, the letters "ZM" appearatthe top of the screen. Thezoomwindowsize displays in the top right corner of the screen. Toturn thezoomfeatureoff, press themenu key untilthe RANGE/ZOOM menu appears. Nowpresstheup arrow key. Thisswitches theunit intotherangemode, whichturnsthe zoom feature off. ZM----20 3IAFT ZOOM 4C n; C SIZE 'et *Vnc! Zoom - Manual Operation To operatethezoom featurewhentheMagna II is in themanual mode, firstpressthemenu key. Thenpressthedown arrow key in theRANGE/ ZOOM menu toplacethe Magnainthezoommode. Thezoomsize menu automatically appearsnext. You canchangethe zoomsize by pressing theupor downarrows. After youselect the desired zoomsize, pressthe menu key until the "MOVE ZOOM" menu appears. This menu letsyoumovethezoom ZM----20 windowupordowninone footincrements by the arrow keys. Thus, you can pressing move the zoom window up towards the lyiflhllsurface,downtothebottom,or anywhere in IILJVC. 4-C between. The windowstays whereyou put ZOOM it. It doesn'ttrack the bottom signal. A steep slope returns a wide signal, the steeper the wider. Signals returned from a high underwater cliff are usually the widest of all. 3IIAFT e Toturnthezoomfeatureoff, pressthe menu key until theRANGE/ZOOM menu appears. Now pressthe up arrow key. Thisswitches theunitintothe range mode,whichturnsthe zoom featureoff. 8 a&,4 '-- L L 21 I PDF compression, OCR, web-optimization with CVISION's PdfCompressor TRANSDUCER CONE ANGLES SENSITIVITY The sound waves from the transducer spread out into the water in a cone shaped beam. This looks much like the beam from a flashlight. The angle between theoutside edges of the cone is the cone angle. Eagle offers a choice of transducers with either an 8 or 20 degree cone angle. The transducer supplied with the Magna II has a 20 degreecone angle. Typically, wide cone angle transducers (20 degrees) are ideal for operating in shallow to medium water depths. The 20 degree cone angle allows you to see more of the underwater world. In 15 feet of waterthe20 degree cone covers an area about six feet across. The 8 degree transducer covers only about a two foot circle. The sensitivity menu lets you control theunit's abilityto pick up echoes. A low sensitivity level excludes much of the bottom information, fish signals, and other detail. High sensitivity settingslets you see features, butit can also clutterthescreen with noiseand otherunwantedsignals. Typically, the bestsensitivity level shows a good, solid bottomsignalwith grayline. The 20 degree transducer is almost always the best to use in fresh water, the 8 degree mostly in salt water. In a deep waterenvironment, (300 feet - fresh water, 100 feet - salt water) the narrow cone angle is more desirable. Since the sound energy is concentrated in a smaller area, it can penetrate to muchdeeper depths. The MagnaII adjuststhesensitivity level to keepa solid bottomsignal on thescreen. It adds a littleextrawhenit's inthe automatic mode. Thisgives it thecapability to showfish and other detail. However,situationsoäcu·r whereit becomes necessary to increase or decreasethe sensitivitylevel. Typically, this occurswhenyou wishto see more detail, so you need to increase the sensitivity. The procedureto adjust it is the samewhether theunit is in the automatic or manual mode. Tochangethesensitivity level, first press the menu key until the sensitivity menu appears. If the unit is in automatic, the menu shows "AUTOSENS." Otherwise,themenu shows "MAN SENS." Nowpresstheup arrow key to increase the sensitivity, the downarrowto decreaseit. Averticalbargraphinthemenu box shows the sensitivity level. Echoes scrolling onto the screen will also show the effects ofthesensitivity change. Ifyou reach themaximum or minimum sensitivity level, a tone soundsalerting you to the limits. After you've adjusted theunitto the desired sensitivity level, press the ON/CLEAR key toclearthe display. Ifyouwait a few seconds, it will automatically clear. GRAYLINE 50' 100' 150' 200' Grayline letsyoudistinguish between strong and weakechoes. It "paints" gray on targets that are stronger than a preset level. This shows the differencebetween a hardor soft bottom, large fishversus smallerones, or rocksand brush on the bottom. For example, a soft, muddy, or weedy bottom returns a weakersignal which showsa narrow or no gray line. A hard bottom returns a strong signal that causesa wide gray line. 8 DEGREE 20 PDF compression, OCR, web-optimization with CVISION's PdfCompressor If you havetwo targetsof equalsize, one with gray and theotherwithout, the target with gray isthestrongerecho. Thishelpsdistinguish fish from structure, or the larger fish from a smaller one. Grayline adjustable. Sinceit shows the difference betweenstrongand weakechoes,changingthelevelmayrequireadifferentsensitivity selling. To changetheGraylinelevel, firstpress the MENU key untiltheGrayline menu appears. Nowpresstheup arrow keytoincreasethelevel, thedown arrowto decreaseit. The bar graph intheGrayline menu box shows the level of Graylinenow in use. Echoes scrollingonto thescreen will also showthe effects of the Grayline change. If you reach the maximumor minimum level, a tone sounds alertingyou to the limits. The level chosen by the Magna II when it's first turned on is usually adequate for most conditions. Experiment with your unitto find the Graylinesettingthat's best. FISH ID FEATURE ®is theside range orthe up arrow keyto increase it. Theavailable rangesin sidescan mode are 0-10, 20,40,60, and 120 feet or 0-10, 20,40,and 60 meters. Press the ON/CLEAR key to erase the range menu from the screen or wait afew seconds and it will automatically clear. SIDE SCAN - ALARM The side scanfeaturealso hasan alarm that sounds whena Fish ID symbolappears on the display. This is called the Side Alarm andis automaticallyturned onwhentheside scan feature is enabled. To turn it off, or backon again, pressthe MENU key repeatedlywhilethe sidescanfeatureis on. When theSide Alarm menu appears, press the downarrow key to tum it off, or theuparrow keytoturn iton. PresstheON/CLEAR keyto erasethismenu fromthe screen or wait a few seconds and it will automatically clear. MENU SUMMARY SIDE RANGE menu appears. Nowpress thedown arrow keyto decrease The Fish ID featureidentifies targetsthat meet certainconditions as fish. The micro-computer analyses all echoes and eliminates surface clutter, thermoclines, and other undesirable signals. In mostinstances, remaining targets are fish. The Fish ID feature displays symbols onthescreen in placeoftheactualfish echoes. Therearefoursymbolsizes:tiny, small, medium,and large. These show the relative size between targets. In otherwords,itdisplaysasmallfishsymbolwhenitthinksatarget is asmall fish, a mediumfish symbolon a largertarget, etc. The micro-computeris sophisticated, but it can be fooled. It can't distinguish between fish and other suspended objectssuch as turtles, submerged floats, air bubbles, etc. Individual tree limbs extending outwards from a group of limbs are the hardestobjects for the Fish ID feature to distinguishfrom fish. You may see Fish ID symbols on the screenwhen,infact,thereareno fish. Practicewiththe whenthe Fish unit ID feature is on and offto becomemorefamiliarwith Fish ID. WhentheMagna II is first turnedon, the Fish ID featureis automatically turnedon, also. To turnthis featureoff, pressthemenu key until the Fish ID feature'smenu appearsas shown below. Now press thedown arrow 10 The menus listed below are shownin orderas you press theMENU key whiletheMagna II is in the normal mode with automatic and Fish ID on. The order of the menus (and the menus themselves) will change as different features are selected, however this is order the menus are in when the unit is first turned on. t . 9. P' MAN s ZO a 'RANGE' I I SET BY I a I IAUTOI 6. MODE 7. SHI IOFF I ID ISIDEI 4. IOFFP I 8. I AUTO I SEP13 I GRAYI I LINE I LHn lDI9p FISH 10 . iI,r& Iiw&I IDEEPI 12. ICHARTI ISPEEDI li''al ON 13. 14. ·j I I ii 15. l4 II ISHALI IALAR11I I OFFi loiRKl P6HTI I& I IALARMI UFFI IMETERI 19 "I 16. lUFF PDF compression, OCR, web-optimization with CVISION's PdfCompressor SIDE SCAN key. Thisturnsthefeature off. Toturn it backon, repeattheabovesteps, butpresstheup arrow key instead. The Fish ID feature can't be usedwhen the Magna II is in the manual mode. If you turn theautomatic featureoft, theFish ID feature will automatically be turnedoff, also. The Magna II and Magna II Plus have the unique ability to viewtargetsouttothe side of the boat. This feature is called 'side scan" and requiresthe optionalScanPactransducer accessory package. The ScanPac consists of a transducer, adjustable metalstrap, and a "'1" cable. Thetransducer attaches to the trollingmotorwith the adjustable metal strap. The "'1" cable connects both the ScanPac transducer and the Magna II's normal transducer to the Magna II's transducer connector. See the ScanPac's installation instructions for more detail. CHARTSPEED The rate echoes scroll across the screen is called the chart speed. It's adjustable by pressing the menu key until the chart speed menu appears. Chart speed is set to maximumwhenthe MagnaII is firstturnedon. To decreaseit, press thedownarrow key. Pressthe up arrow keyto increase thespeed again. The bar graph in the Chart Speed menu box showsa graph ofthespeed. Echoes scrolling onto thescreen will also show the effects of the change. If you reach themaximumor minimum level, an warningtone sounds. To usetheMagna II in the side scan mode, repeatedly press the MENU key until the SideScan menu appears. Nowpress the up arrow key to turn the side scan feature on. The screen shown at right appears. Target echoes appear as short, horizontal lines on the left side of the screen. Fish ID symbols appear on the right side of the screen when the unit's computer thinks a group of echoes are fish. When a Fish ID symbol appears, the distancetiomthe symbol tothe boat shows atthebottomofthe screen. Intheexample shown at right! afish symbolis 27feet fromtheboat. After thefish symboldisappears, thedisplay attheboffom ofthescreenreverts to the digital depth display. See thescreen on theleft. The waterdepth is 64 feet. This is the distance from the bottom to the depth sounding transducer, not the side scan. By slowly rotating your trolling motor, a large areaaround the boat can be scanned. SIDE SCAN-RANGE Therange showsonthesidesofthedisplay. Remember, this is the range outtothe side of the boat, not towards the bottom. To change the range, press the MENU key while the side scan feature is on until the 18 Tostopthechart, firstclearanymenu fromthescreen by pressing theON! CLEAR key. You can't stopthe chart while a menu is displayed. Now press the up arrow key. The chart will freeze and the word "STOP"appears at the top right portion ofthescreen. To start thechart, press the up arrow key again. 11 PDF compression, OCR, web-optimization with CVISION's PdfCompressor DISPLAYMODE The Magna II hasthree different screen modes. The Magna II Plus has six. To change modes, press the MENU key until the "DISP MODE" (DisplayMode) menu appears. Then press the up or down arrow keys until the desired mode number appears. The modes are as follows: MACNA II ONLY CHI 1 (Chart #1) lowing features: 1. Automatic On 373FT DISI MODE This is thedefault mode usedwhen the Magna II is first turned on. It has thefol2. Fish ID FeatureOn 3. Digital Depth Display On To adjustthe contrast, press the menu key until the DARK/LIGHT menu appears. To decrease press thedownarrow key. Press it, the up arrow key to increase the contrast. The bar graph in the Dark/Light menu box showsa graphof the contrast. The screen will also show the effects of the change. If youreach the maximum or minimum level, a tone sounds alerting you to the limits. The menu will clear automatically after a few seconds or you can press the ON/CLEAR key to clearthescreen. CHT1 ASP (Advanced Signal Processing) CHT 2 (Chart #2) Thisis the High SpeedScroll mode. It shifts the chart speed intohighgear, sciolling echoes at a high rate. It hasthe following features: 1. Automatic Off 1:1 .: E:::::::..::::.:::::::::s::;.::. 2. Fish ID FeatureOff 3. Digital Depth Display Off -n DEPTH FT DIG 1 (Digital #1) This is thedigital only screen. It shows the digital depth displayat thetop ofthe screen inverylargenumbers. Theshallowand deep alarm settings are displayed beneath the digital depth. No chart showsonthis screen. 60+8. I SHAL [ ALM L ASP is a programembedded in the Magna II's computerthat is specifically designed to ASP eliminate no!se. It continuallymonitors the signalsfrom thereceiver, determines which echoes are noise and rejects them. This allows true target echoes to display on the screen with a minimum of clutter. This feature is especially usefulsince it typicallylets t.O you operate the boat at all speeds without ___________________ the sensitivity or other controls. adjusting When the MagnaII or MagnaII Plus is firstturnedon, ASPis enabled.To turn ASPoff, press themenu keyrepeatedly until theASPmenu appears. Now press theup arrow to turn iton or thedown arrow to turn it off. The menu willclearautomatically afterafewseconds oryou canpresstheON/ CLEAR key to clearthe screen. E-- 373FT -- t-ct I I OFT OFT DEEP ALM 12 PDF compression, OCR, web-optimization with CVISION's PdfCompressor 17 DISPLAY MODE (cont.) LAMP MAGNAII PLUS ONLY The Magna II and Magna II Plus' display is backlighted for nightuse. To turn the backlights on or off, pressthe menu key repeatedly until the LAMP menu appears. Now press theup arrow to turnthelights on or the down arrow toturn them off. Themenu will clear automatically after a few seconds or you can press the ON/CLEAR key to clear the screen. 373FT ect __________ I LAMPI _____ .4 CHT 1 (Chart #1) This is the default mode used when the MagnaII Plus isfirstturnedon. It hasthefollowing features: 1. Automatic On 2. Ash ID Feature On 3. Digital Depth Display On _______ __________ ____ ZM----20 34.1FT FEET/METER 743°F: TheMagnaII and Magna II Plus canshowthe depth in feet or meters. The Magna II Plus can also show temperature in degrees Fahrenheit or Celsius, speed in statutemiles per hour or knots, and distance (log) in statute miles ornautical miles. Wheneither unitis in themetric mode, all depth readings, ranges, zooms, and alarm sethngs are in meters. When a unit is in the feet mode, all of the above settings are in feet. Tochange fromfeet to metersor vice-versa, press themenu key until the FEET/METER menu appears. Press the down arrow key to switch to metric, the up arrow to switch to feet. Displays show infeet whenthe unit is firstturnedon. The menu will clear automatically after a few seconds or youcan press the ON/CLEAR key to clear thescreen. DISPLAYCONTRAST Theunit'sdisplaycontrast is adjustable to suit differentlightingconditions. Thiswill help youseethescreenfromdifferentangles, or at varioustimes CHT 2 (Chart #2) Same as Chart #1 pIusdigital surface watertemperature display. CHT 3 (Chad #3) Same as Chart#1 plus digital speed display. CHT 4 (Chart #4) This istheHigh Speed Scroll mode. It shifts the chart speed into high gear, scrolling echoes at a high rate. It has the following features: of theday. 1. Automatic Off 2. Fish ID FeatureOff 3. All Digital Displays Off 13 PDF compression, OCR, web-optimization with CVISION's PdfCompressor 16 DISPLAY MODE (cont.) DIG1 (Digital#1) This is thefirst digital only screen. It shows the digital depth display at the top of the screen in very large numbers. The shallow and deep alarm settings are displayed beneath the digital depth. No chart showson this screen. [60.8] I SHAL ALM L F DEPTH FT DEPTH ALARMS OFT OFT DEEP ALM Thedepthalarmsaretriggered onlybythebottom signal. Nootherechoes will activatethese alarms. Thedepth alarms consistofa shallow anddeep alarm. The shallow alarm sounds an alarm tone whenthe bottomgoes shallower than thealarm'ssetting. Thedeep alarm sounds a tone when the bottomgoes deeperthan ft's setting. Both alarms adjustthe same, althoughthrough differentmenus. ShallowAlarm Tosetthe shallowalarm,press themenu key repeatedlyuntil the "SHAL ALARM" menu appears. Press the down arrow key to increase the depth,the up arrow key decreases it. The number in the shallowalarm's menu boxshowsthecurrent shallowalarm setting. When the number reachesthe desired setting, release the arrow key. Press the ON! CLEAR key to remove the shallow alarm menu fromthescreen. Nowwhenthebottom depth goes shallowerthan the alarm's settingan alarm tone sounds. Atthe sametime the alarm sounds, a message box appears on the screen as shown below. DIG 2(Digital#2) The digitaldepth displayshowsat the top of this screen in:very large digits. The digital temperature, speed, and log showsbeneath thedepth. The log startscounting whenthe Magna II Plus is first turned on. When the Magna II Plus isturned off,thelog is reset to zero. [38.3] °F F I_ DEPTH FT TEMP ISPEED L T88 33.8 8.3 MPH I LOGMI 373FT ___________ ALARMS FISH ALARM The Fish Alarm sounds a tone when a fish symbolappearson the screen. To use the fish alarm, press the menu key until the "FISH ALARM"menu appears on the screen. Nowpresstheuparrow keytoturnthealarm on. Repeatthe above steps to turn thefish alarm off. (Note: If the Fish ID featureis off, it will be turned on when you turn the fish alarm on.) 14 .-t ALARM MUTE SHAL Pressthe up arrow keyto silence the alarm. This will turn the alarm sound off until the shallow alarm istriggered again. S To turn the alarm off, press the menu key until theshallow alarm menu appears. Then press the up arrow key until the word"OFF" appears; Deep Alarm The deep alarm adjuststhesame as theshallow alarm. Use the 'DEEP ALARM"menu to adjustthedeep alarm. When thebottom signalgoes deeperthan the setting, an alarm tone sounds. 15 PDF compression, OCR, web-optimization with CVISION's PdfCompressor