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X-20A
INSTALLATION AND OPERATION
INSTRUCTIONS
INC.
•LOWRANCE
ELECTRONICS,
E. SKELLY OK 74128
LITHO IN U.S.A. 988-0105-36 12000
DR.,
TULSA,
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CONTENTS TABLE OF 1 INTRODUCTION 1 INSTALLATION 2 POWER CONNECTIONS 3 KEYBOARD BASICS 5 OPERATION 5 SENSITIVITY 7 SPEED CHART 8 RANGE 8 ZOOM 9 DIGITAL 10 FEATURE FISH I.D. 11 AUTO 11 ALARMS 12 CHARTALARM 13 ALARM FISH 13 SPEAKER 13 LIGHT 14 MODE 16 SIMULATOR 17 AND CONE ANGLES TRANSDUCERS 18 INTERPRETATION SIGNAL 18 ARCHES FISH 20 WATER TEMPERATURE AND THERMOCLINES 21 A LAKE SURVEYING 22 BAIT FISH 22 SPECIFICATION 23 INFORMATION SERV
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4. The boat must be at toseefish arches. If the boat moving aslowtrolling speed is fish in the on the as horizontal motionless, cone, stay showing display straight lines. ELECTRICAL NOISE A cause of sonar is electrical noise. This on the major problems usually appears sonar's as random of dots or lines. In severe it can display patterns cases, cover the screen with black or cause the unit completely dots, operate erraticly, or not at all. To eliminate or minimize the effect
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INTRODUCTION or no fish Weak bottom erratic, signals (cont4: echo, digital readings causes noisefromthe boat's motorcan interfere wlththe sonar. This X-20A is 2. Electrical sonar. Your Lowrance Welcome to the world of sportfishing or noise feature. the sonar to increase its Discrimination rejection automatically and novice users. a sonar for both professional high quality designed as oreven structure This can cause the unit to eliminate such fish weakersignals bottom that fi
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Power Connections IMPORTANT The X-20A from a 12 volt Attach the operates battery system. power cable to an or buss. If have with accessory power you problems SERVICE INFORMATION! electrical then attach the cable to the interference, directly battery. Electrical interference shows as random dots on the whenever display If is unit not or if need technical use the the boat's or an is on. your working, you help, please following engine accessory section before a service center
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fish in and come back to thus can make turn exactly _.a1.J marked, your you on a when far from shore the This is essential big you're right spot. of fish when over lake. Unless mark the school it, may you're you you not be able to find it again. BAIT FISH can't be The of bait fish to successful fishing over-empha- importance waters. food of all fish in most sized. are the game They principal minnows and such as Bait fish are the fish, feeding forage plankton be the
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other fish SENS. die out when stocked in lakes that remain too cold eventually the This summer. While some fish have a wider toler- and the arrow the during key temperature keys adjust graph's sensitivity. -1 ance than each has a certain within which it tries to is the unit automati- others, (The digital's sensitivity adjusted range stay. by fish The receiver has 32 of over water lie atthe level that Schooling cally.) suspended deep provides steps adjustment. this We assume ar
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WATER TEMPERATURE AND THERMOCLINES OPERATION has an not Waler controlling-influence upon temperature important-if SENSITIVITY their bodies are of all fish. Fish are cold blooded and the activities lhe of the waler. winter, the During temperature surrounding always turned on. The mode when it's first The unit is in the AUTO SEARCH need water slows down their metabolisrri. At this colder time, they to find the and automatically adjusts sensitivity range micro-computer as muc
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With a second bottom echo high sensitivity settings, (second BOAT'S DIRECTION OF TRAVEL echo) may .— This is normal. It's caused the off appear. by returning signal reflecting the surface of the water. Then it makes a second to the bottom and trip back again. U AUTO SENS RANGE SENSrnVITY 20 BAR I- N FISH ID 14.: 4L •: EU . . . . U A B C when the unit's Remember, automatic feature is the receiver's sen- on, to the conditions. The micro- sitivity automatically
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accurate bottom read- SPEED 20 transducers CHART Both 8 and give degree degree much wider on the 20 bottom is even the degree though signal ings, the a To of the bottom. Remem- the chart scrolls at change are more At preset speed. model. This is because on, speed you seeing power will flash on The rest The word "CHART" true CHART SPEED of the shows the the the shallow depth. key. ber, edge signal you speed, press left bar will also on the etc. side of the A vertical whet
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RANGE TRANSDUCERS AND CONE ANGLES The sound waves from the transducer out into the water in a spread The to the bottom on the cone beam. This looks much like the beam from range automatically changes keep shaped a signal flashlight. when the unit is in automatic. The cannot be The between the outside of the display angle cone is the cone range changed edges angle. when the unit is in the automatic mode. The can be in range changed manual mode. There are six available: and Low
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first the ZOOM The word - To the zoom press key. MODE 5 All change range, chart, High side of the screen.. Now the "ZOOM" flashes on the up press Scroll. right Speed to increase or decrease the zoom size. arrow or the down arrow key if is 0-60 the ZOOM For the feet, pressing key changes In this mode the chart scrolls example, range While the word "ZOOM' is still the to 30-60 feet. •10 flashing, press at The chart range high speed. AUTO feet. zoom from 30 feet to 15 the
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FISH I.D. £1 The Fish 1.0. feature is on when the unit is first turned on. automatically AUTO The inside the unit all out unwanted echoes, computer analyzes filtering It eliminate surface and other un- signals. helps clutter, thermoclines, MODE 3- Big digital. RANGE desirable The are fish. signals. remaining suspended targets usually that are identified the unit as fish are as Targets by small, displayed The numbers a) digital depth or fish on are medium, the These large
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MODE AUTO feature is enabled. It When the unit is first turned the automatic on, modes. To The X-20A has five different screen modes, and the bottom The sensitiv- change press works to find depth. automatically display until the desired screen the MODE the MODE bottom on the screen key. Keep pressing key and are also to the adjusted keep signal ity range A 01 the different screen modes follows. at all times. To turn the automatic feature the AUTO appears. summary off, simply pre
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CHART ALARM the CHART ALARM then move To turn the Chart Alarm off, key, press bar all the to its shallowest the the bottom of the way position using up To set the Chart the CHART ALARM on the Alarm, press key keyboard. arrow key. " The words Chart Alarm" flashes in the lower corner of the screen. right A will vertical bar also on the left side of the screen. It on displays stay the screen for seconds or for seconds after have finished eight eight you FISH ALARM it. This is
