X-25 INSTALLATION AND OPERATION INSTRUCTIONS LOWRANCE ELECTRONICS, INC. LITHO IN U.S.A. 988-0105-33 12000 E. SKELLY DR., TULSA, OK 74128 PDF compression, OCR, web-optimization with CVISION's PdfCompressor N OTES PDF compression, OCR, web-optimization with CVISION's PdfCompressor N 0 T ES TABLE OF CONTENTS INTRODUCTION INSTALLATION POWER CONNECTIONS SPEED/TERMPERATURE SENSOR KEYBOARD BASICS DISPLAY MENUS OPERATION AUTOMATIC RANGE ZOOM Automatic Operation ZOOM- Manual Operation SENSITIVITY GRAYLINE® FISH ID CHARTSPEED DISPLAY MODE ALARMS FISHALARM DEPTH ALARMS LAMP FEET/METER DISPLAY CONTRAST ASP (Advanced Signal Processing) TRANSDUCERS ANDCONE ANGLES SIGNALINTERPRETATION FISH ARCHES WATERTEMPERATURE ANDTHERMOCLINES SURVEYING A LAKE BAITFISH SONAR TROUBLESHOOTING 1 1 - 2 3 4 5 5 6 6 6 7 8 9 9 10 11 12 14 14 14 15 15 16 16 17 18 19 20 22 22 23 Copyright © 1990, Lowrance Electronics, Inc All rights reserved. All features and specifications subjectto change without notice. All screens in this manual are simulated. 26 PDF compression, OCR, web-optimization with CVISION's PdfCompressor 4. The boatmust bemovingataslowtrollingspeed to seefish arches. Ifthe boat Is motionless, fish stay inthecone,showing on the display as straighthorizontal lines. ELECTRICALNOISE A majorcauseofsonarproblemsis electrical noise. Thisusuallyappearson the sonar's display as random patternsof dots or lines. In severe cases, it can completelycoverthe screenwith blackdots, orcause the unit operateerraticly, or not at all. To eliminate or minimize the effectsof electrical noise, firsttry to determinethe cause. With the boat at rest in the water,the firstthing you shoulddo is turn all electrical equipmenton the boat off. Make certain the engine is off, also. Turn yourX-25 on, thenturn offASP (Advanced Signal Processing). Thereshouldbe a steady bottom signal on the display. Now turn on each piece of electrical equipmentonthe boat and viewtheeffecton the sonar's display. For example, turnonthebilgepumpand viewthesonardisplayfornoise. Ifno noise is present, turnthe pumpoff, thenturnon the VHF radio and transmit. Keepdoing this until all electrical equipmenthas been turned on, their effect on the sonar display noted, then turned off. Ifyoufindnoiseinterference from an electrical instrument, trolling motor, pump, or radio, try to isolate the problem. You can usually re-routethe sonar unit's power cable and transducer cable away from the wiring that is causing the interference. VHF radioantennacablesradiate noise when transmitting, so be certain to keep the sonar'swires awayfromit. Youmayneedto route the sonar unit'spowercabledirectlyto the batterytoisolate itfromotherwiringonthe boat. If no noise displays on the sonar unit from electrical equipment, then make certain everythingexcept the sonar unit is turned off, then start the engine. Increase the RPMwiththe gearshift in neutral. If noise appears on the display, the problemcouldbe one of threethings;sparkplugs, alternator, ortachometer lIters, orrouting thesonarunit's wiring. Try using resistorspark plugs, alternatorf powercableawayfrom engine wiring. Again, routing the powercabledirectlyto the batteryhelpseliminatenoise problems. Makecertain to use the in-line fuse supplied with the unit when wiringthe powercableto the battery. When no noiseappears on the sonarunit after all of the above tests, then the noise source is probably cavitation, Many novices or persons with limited experiencemake hasty sonar installations which functionperfectlyin shallow water,orwhentheboat is atrest. In nearly allcases, thecause ofthe malfunction will be the location and/or angle of the transducer. The face of the transducer must be placedin a locationthat has asmoothflow of water at all boat speeds. Read your transducerowners manualforthe best mounting position. 25 PDF compression, OCR, web-optimization with CVISION's PdfCompressor Weak bottom echo, digital readings erratic,or no fish signals(cont.): boat'smotorcaninterfere withthesonar. Thiscauses 2. Electrical noisefromthe thesonarto automatically increase its Discrimination or noise rejection feature. Thiscan cause theunittoeliminate weakersignalssuchasfish oreven structure fromthe display, 3. The water may be deeperthan the sonar's ability to findthe bottom. If the sonarcan'tfind the bottomsignal whileit's in the automaticmode, thedigitalwill flash continuously. It maychangethe range to limitsfargreaterthanthe water you are in. If this happens, place the unit inthe manualmode, then changethe As range toa realistic one, (forexample, 0-100feet)and increase thesensitivity. move Into shallowerwater, a bottomsignal should appear. you 4. Checkthe batteryvoltage, lithevoltagedrops,the unit'stransmitterpower also drops, reducing its ability to find the bottom ortargets. Bottom echo disappears at high speeds or erraticdigItal reading or weak bottom echowhileboat is moving 1. The transducer maybe in turbulentwater. It must be mounted in a smooth flow ofwater in orderforthe sonarto work at all boatspeeds. Air bubbles in the water disrupt the sonar signals,interfering with its ability to find the bottom or othertargets. The technicaltermfor this is 'Cavitation'. s. INTRODUCTION Thank you for purchasing a Lowrancq sonar. Your X-25 is a high quality sonar designed for both professional and novice fishermen. These units have an automatic featurethat finds and displaysthe bottom, fish, structure, and morel All you have to do is pressthe on key. However, if you wish to fine tune the unit, all you have to do is press the menu key. The X-25 has powerful featuresavailable through easy-to-use menus. To get started with your unit, first readthe installation section. This is whereit all begins, Improperinstallation can cause problemsdown the road. After you've readthe instnjctions, installthe unit,then readthe rest ofthe manual. The more you know about your unit,the better it will performfor you. Take this manual for reference when you head for the water. INSTALLATION Mountthe X-25 in any convenient location, providedthere is clearance when it's tilted forthebestviewingangle. Holes in the bracket's base allowwood screw or throughbolt mounting. It may be necessaryto place a pieceof plywood on theback side of thin panels to 'reinforce the panel. Make certain there is enough room behind theunit to attach thesonarto automatically increase its Discrimination or noise rejectionfeature. 2. Electrical noisefromtheboat'smotorcaninterfere withthesonar. Thiscauses This can causetheunit to eliminate weakersignalssuchasfishoreven structure fromthedisplay. Try using resistorspark plugsorroutingIhe sonarunit'spower and transducer cables awayfrom otherelectrical wiring on the boat. the power and transducer cables. No fish arches whenthe Fish ID featureIs off: 1. Make certain the transducer is pointing straight down. This is the most common problem ifa partialarch is displayed. Seethe Fish Archsection inyour owner's manual formore information. 2. The sensitivity maynot be highenough. In orderforthe unitto displaya fish arch, it has to be ableto receive the fish's echo fromthe time it enters the cone the until It leaves. If the sensitivity is not highenough,the unit displays fish only it is in the centerof the cone. when 3. Use the Zoom feature. It is much easierto displayfish arches whenzoomed in on a smallrange ofwaterthan a largeone. For example, you will have much betterluckseeing fish arches with a30 to 60foot range than aDto 60foot range. This enlarges the targets, allowing the displayto show much more detail. Drill a hole in thedashfor the power and transducer cables. Thebest locationforthishole is immediately underthe gimbal bracket. This way, the bracket covers the hole. The smallest holeboth the power and transducercablescan passthrough is one inch. However, you can't pass a power or transducer connector and anothercable through 1 24 PDF compression, OCR, web-optimization with CVISION's PdfCompressor TherefOre, afterdrilling the hole, passthe transducer connectorup through the holefrom underthe dash. Thendrop the powercable down from the front side of the dash. Slide the bracket over the hole,then routethetransducer and power cables out the slots in the bracket. Finally,fastenthe bracket to the dash. POWER CONNECTIONS a one inch hole. IMPORTANT SERVICE INFORMATION! If yourunit is notworking,orif you needtechnical help, please use the following troubleshooting section before contactinga service centeror the factory customerservice department.Itmaysaveyou thetroubleofreturning yourunit. See the HowTo Obtain Service section on page 26 if you needservice. The X-25 works from a 12 volt DC systemonly. For the best results, run the powercable directlyto the boat's battery. Keepthepower cable awayfrom other boat wiring, especially the engine's wires. This will give the best isolation from electrical noise. If thesupplied cable is not longenoughto reach the battery; splice #18 gauge insulated wire to it. You can attachthe power cableto an accessory or powerbuss, however, you may have problems with electrical interference. See page 25 for moreinformation on electrical noise. This unit has reverse polarity protection. No damagewill occur if the powerwires are reversed. However, theunit will not work until the wires are attachedcorrectly. SONARTROUBLESHOOTING Unit won't turn on: I. Checkthe power cable'sconnection at the unit. Also checkthe wiring. tothe positivebattery terminal, black to negative orground. 3. Checkthe fuse. 2. Makecertain the power cable is wiredproperly. The red wire connects 4. Measurethebatteryvoltageatthe unit'spowerconnector. It shouldbe atleast volts. If it isn't, thewiring tothe unitisdefective, the batteryterminals orwiring on the terminals are corroded,orthe battery needs charging. ii Unit freezes, locks up, or operates erratically: 1. Electrical noise fromtheboat's motor, trollingmotor, oran accessory may be interfering withthesonarunit. Re-routing the power andtransducer cablesaway from otherelectrical wiringon the boat may help. Route the sonarunit'spower cabledirectlyto the battery instead of througha fuse blockor ignition switch RED WIRE 2. Inspect the transducercable forbreaks,cuts,or pinched wires. 3 amp FUSE 3. Check both the transducerand power connectors. Make certain both are securelyplugged in to the unit Weak bottom echo, digital readings erratic, or no fish signals: 1. Make certain transducer is pointing straight down. Cleanthe face of the transducer. Oil,dirt, andfuel can cause afilmto formonthe transducer, reducing its effectiveness. If the transduceris mounted inside the hull, be sure it is shooting through onlyone layeroffiberglass andthat itissecurelybonded tothe hull. Do NOT use RN siliconerubberadhesive or Marinetexid. TO SPEED! TEMP SENSOR 2 PDF compression, OCR, web-optimization with CVISION's PdfCompressor 23 SURVEYING A LAKE SPEED/TEMPERATURE SENSORINSTALLATION (Requires OPTIONALLST-T Speed/TempSensor) Mountthespeed/temp sensoron theboat's transomin a location wheretheflow of wateris the smoothest. Thereshould be a minimum ofturbulenceand air bubbles in the chosen location. The port (left) side of thetransom is preferred, however, thestarboard(right) side can be usedif necessary. Do not mountthe speed sensorbehind strakes, ribs,or thru-hull fittings. These will disturbthe flow of water to the speed sensor. In a typical installation, the speed sensoris mounted six to twelve inches fromthe centerline of the hull. The sensormust always be in the waterto function properly. Makecertain the chosen location is in thewater even at high speed or when the boat is on plane. Once you determine theproper location, placethe sensor on the transom. Makecertain the sensor'sbottom is flush with the bottom of the hull. Mark the transomin four places, two in each slot. Drill a 5/32" mounting hole at each location. Mountthe sensorto the hull with four #10 stainless steel screws (not included). Use a good grade of caulking compound to seal the screws. Adjust the sensorso it is flush with thebottomof the hull and tighten the screws. The most successful anglers on any body of water are those who fish it day after day and year after year. Eventually, they learn the hot spotsthat produce fish consistently. They discoverthrough experiencewhere, and at what depth,they can expect to find the fish they want at any season. And they realize that these productive areas change throughout the year depending on waterlevel, temperature, food, and other factors. WiththeX-25, anyone can eliminate guesswork and concentrate on the areas where fish are likely to be. Even if it's thefirst time on the lake! The most efficient way to become acquaintedwith a bodyof water is to surveyit with your X-25. Start with a map of the lake, if possible, and indicate the promising spots in relation to landmarks on shore. As you go about your survey, your X-25 will tell youthe depth and type of bot ...