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X-20
AND OPERATION
INSTALLATION
INSTRUCTIONS
INC.
ELECTRONICS,
•LOWRANCE
74128
E. SKELLY OK
12000 TULSA,
DR.,
988-0105-17
LITHO IN U.S.A.
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TABLE OF CONTENTS INTRODUCTION 1 INSTALLATION 1 — I A POWER CONNECTIONS 1 AU NOISE 3 TRANSDUCER 3 KEYBOARD BASICS 4 OPERATION 7 I 4 ZOOM SENSITIVITY ZOOM 7 CHART SPEED 9 a ASH ID RANGE 10 s.r 1 jfl ZOOM 10 Cr JLj DIG ITAL 11 I FISH I.D. FEATURE 12 S —— __J. ' — AUTO 13 p. .J. ALARMS 13 iLI L4fl CHART ALARM 14 FISH ALARM 15 SPEAKER 15 LIGHT 15 ACTUAL UNRETOUCHED PHOTOGRAPHS MODE 16 TAKEN ON GRAND LAKE OF THE CHEROKEES, TRANSDUCERS AND
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- INTRODUCTION receiver to The of a sonar unit's SENSITIVITY display targets. ability X-20 is a sonar, Your Lowrance world of Welcome to the to be Also sportfishing the allows weaker targets displayed. sensitivity Increasing users. and novice sonar for both professional designed high quality called "gain". the finds and an automatic feature that These units have displays X- become familiar with and structure. As - bottom your fish, you SPEED See CHART SPEED. depth,
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- electrical then interference, attach the cable to the OPERATING FREQUENCY of a sonar unit's transmitter directly battery. Frequency Electrical interference shows as random dots on the whenever and receiver. display (See kHz.) the boat's or an is on. engine accessory - OUTPUT POWER The of electrical transmitted from amplitude energy The cable has two red is the lead and black is the sonar unit to the transducer. Measured in the the power wires, wafts, positive higher or Attach
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Discrimination feature on Lowrance sonar units removes NOISE The many and from other acoustic and electrical false sources, sonars, signals other the cable from Minimize electrical noise more. routing power away by One of the noise sources of electrical interference. largest possible - to harness that runs from the when a fish or is the FISH ALARM An alarm that activates wiring engine suspended object generators engine's contains a wire for the the instrument This harness
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Current 200 ma Operating (lights off) 500 ma (lights on) 9-15 vdc Operating Voltage Number of 50 x 27 pixels x (vertical horizontal) 1350 Total Scroll .5" minute Display Speed per (minimum) 32" minute per (maximum) Maximum Chart 180 feet Range Maximum 400 feet Digital flange GLOSSARY - ANCHOR WATCH A of the sonar unit's alarm. The alarm selling activates when the boat drifts into shallower or water than the deeper alarm set points. - BACK-LIGHTED A illuminated from be
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FISH BAIT can't be The of bait fish to successful over-empha- fishing importance waters. fish in most are the food of all sized. game They principal such as minnows and are the Bait fish forage fish, feeding plankton such as also be the of shad. Bait fish can fish, crappies, young game and bass. bluegill, surface where within five feet of the Most bait fish concentrate sunlight feed. One method the on which the of they plankton promotes growth A of bait fish to fin
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fish over water lie at the level that stay. Schooling suspended deep this We assume are the most comfortable provides temperature. they here. The of water in the lake is seldom constant from to temperature top bottom. of different and the of a form, Layers temperatures junction warm and cool of water is called a thermocline. The and layer depth thickness of the thermocline can with the season or time of In vary day. lakes there be two or more at different Thermoclines deep may dep
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AND THERMOCLINES WATER TEMPERATURE OPERATION not has an upon Water controlling-influence important-if temperature SENSITIVITY are blooded and their bodies of all fish. Fish are cold the activities The SEARCH mode. the X-20 is in the AUTO When first turned on, the water. of the winter, the surrounding During temperature always and to find the sensitivity range automatically adjusts micro-computer need metabolism. At this colder water slows down their time, they "0"
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With a second bottom echo TRAVEL BOAT'S DIRECTION OF high sensitivity settings, (second 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. • .• :z U • .U• U U . U A B C when the unit's automatic feature is the receiver's sen- Remember, on, to the conditions. The micro- sitivity automatically adjusts surrounding it at a level above the minimum to com
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CHART SPEED To the at a At the chart scrolls change on, preset speed. power speed r will flash on The word "CHART" the CHART SPEED key. speed, press the left A vertical bar will also on the side of the appear right display. This indicates the current chart Next, side of the screen. press speed. ci Press the if wish to increase the chart the arrow speed. up key you 3.; desired it. When the chart reaches the down arrow to decrease key ZOOM When the There are five of
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Both 8 and 20 transducers accurate bottom read- RANGE degree degree give even the bottom is much wider on the 20 The to the bottom on the ings, though signal degree range automatically changes keep signal model. This is because are more of the bottom. Remem- when the unit is in automatic. The cannot be you seeing display range manually the shallow of the shows the true The rest ber, when the unit is in the automatic mode. The can be edge signal you depth. changed range of the tells w
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- Manual Mode MODE 5-All ZOOM chart, High Speed manual mode. The when the unit is in the Scroll. In this mode the chart Zoom differently operates when the zoom is scrolls at The chart doesn't Instead, press change key pressed. high speed. range footincrements. The to shift the down in one can be with the the down arrow range speed adjusted key iii For if in one foot increments. CHART SPEED if desired. arrow shifts the example, range up key up key mode is and the manual
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- MODE 3 FISH I.D. Big digital. The Fish 1.0. feature is on when the unit is first turned on. automatically The numbers use The inside the unit all out unwanted a) digital depth echoes, computer analyzes filtering the lower of the U It eliminate surface and other un- quarter display. signals. helps clutter, thermoclines, - • The is in tenths of desirable The are fish. depth displayed signals. remaining suspended targets usually AUTO1 a foot to 99.9 then it is dis- that are i
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AUTO MODE feature is enabled. It the the automatic modes. To When the unit is first turned The X-20 has five different screen modes, press on, change The sensitiv- desired screen and the bottom the MODE until the works to find depth. MODE display key automatically key. Keep pressing on the screen to the bottom different screen modes follows. and are also signal A of the keep range adjusted appears. summary ity the AUTO feature To turn the automatic off, at all times. simply
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CHART ALARM To turn the Chart Alarm the CHART ALARM then move off, press key, the bottom of the bar all the to its shallowest 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 vertical bar also on the left side of the screen. It will on displays stay the screen for seconds or for seconds after have finished eight eight you FISH ALARM it. This is
