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Lowrance electronic X-20A - page 1
X-20A INSTALLATION AND OPERATION INSTRUCTIONS LITHO IN U.S.A. 988-0105-36 •LOWRANCE ELECTRONICS, INC. 12000 E. SKELLY DR., TULSA, OK 74128 PDF compression, OCR, web-optimization with CVISION's PdfCompressor ...
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Lowrance electronic X-20A - page 2
PDF compression, OCR, web-optimization with CVISION's PdfCompressor ...
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Lowrance electronic X-20A - page 3
26 TABLE OF CONTENTS INTRODUCTION 1 INSTALLATION 1 POWER CONNECTIONS 2 KEYBOARD BASICS 3 OPERATION 5 SENSITIVITY 5 CHART SPEED 7 RANGE 8 ZOOM 8 DIGITAL 9 FISH I.D. FEATURE 10 AUTO 11 ALARMS 11 CHARTALARM 12 FISH ALARM 13 SPEAKER 13 LIGHT 13 MODE 14 SIMULATOR 16 TRANSDUCERS AND CONE ANGLES 17 SIGNAL INTERPRETATION 18 FISH ARCHES 18 WATER TEMPERATURE ...
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Lowrance electronic X-20A - page 4
4. The boat must be moving at aslowtrolling speed toseefish arches. If the boat is motionless, fish stay in the cone, showing on the display as straight horizontal lines. ELECTRICAL NOISE A major cause of sonar problems is electrical noise. This usually appears on the sonar's display as random patterns of dots or lines. In severe cases, it can ...
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Lowrance electronic X-20A - page 5
Weak bottom echo, digital readings erratic, or no fish signals (cont4: INTRODUCTION 2. Electrical noisefromthe boat's motorcan interfere wlththe sonar. This causes the sonar to automatically increase its Discrimination or noise rejection feature. This can cause the unit to eliminate weakersignals such as fish oreven structure from the display. ...
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Lowrance electronic X-20A - page 6
Power Connections The X-20A operates from a 12 volt battery system. Attach the power cable to an accessory or power buss. If you have problems with electrical interference, then attach the cable directly to the battery. Electrical interference shows as random dots on the display whenever the boat's engine or an accessory is on. The power cable ...
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Lowrance electronic X-20A - page 7
thus marked, you can make your turn and come back to fish in exactly _.a1.J 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 able to find it again. BAIT FISH The importance of bait fish to successful fishing can't be over-empha- sized. T ...
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Lowrance electronic X-20A - page 8
SENS. This key and the arrow keys adjust the graph's sensitivity. -1 (The digital's sensitivity is adjusted by the unit automati- cally.) The receiver has 32 steps of adjustment. ______ CHART SPEED IUIi'I Vary the speed of the chart with this key and the arrow - keys. There are 5 steps of chart speed adjustment, ______ MODE .Ip The X ...
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Lowrance electronic X-20A - page 9
WATER TEMPERATURE AND THERMOCLINES Waler 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 waler. During lhe winter, colder water slows down their metabolisrri. At this time, they need about a fourth as much food as they con ...
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Lowrance electronic X-20A - page 10
With high sensitivity settings, a second bottom echo (second echo) may appear. This is normal. It's caused by the returning signal reflecting off the surface of the water. Then it makes a second trip to the bottom and back again. Remember, when the unit's automatic feature is on, the receiver's sen- sitivity automatically adjusts to ...
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Lowrance electronic X-20A - page 11
Both 8 degree and 20 degree transducers give accurate bottom read- ings, even though the bottom signal is much wider on the 20 degree model. This is because you are seeing more of the bottom. Remem- ber, the shallow edge of the signal shows you the true depth. The rest of the signal tells you whether you are over rocks, mud, etc. SIGNAL INTERPRETAT ...
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Lowrance electronic X-20A - page 12
RANGE TRANSDUCERS AND CONE ANGLES The range automatically changes to keep the bottom signal on the display when the unit is in automatic. The range cannot be changed when the unit is in the automatic mode. The range can be changed in manual mode. There are six ranges available: 0-5, 15, 30, 60, 120, and 180 feet. (Metric units: 0-3, 6, 15, 30, and ...
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Lowrance electronic X-20A - page 13
MODE 5 - All chart, High Speed Scroll. In this mode the chart scrolls at high speed. The chart speed can be adjusted with the CHART SPEED key if desired. a) Chart uses full screen. b) No digital depth indicator. c) No FASTRAK. d) No automatic operation al- lowed. e) No Fish l.D. feature or Fish Alarm f) Chart alarm is allowed. SIMULATOR Your unit h ...
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Lowrance electronic X-20A - page 14
FISH I.D. The Fish 1.0. feature is automatically on when the unit is first turned on. The computer inside the unit analyzes all echoes, filtering out unwanted signals. It helps eliminate surface clutter, thermoclines, and other un- desirable signals. The remaining suspended targets are usually fish. Targets that are identified by the unit as fish a ...
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Lowrance electronic X-20A - page 15
The X-20A has five different screen modes. To change modes, press the MODE key. Keep pressing the MODE key until the desired screen appears. A summary 01 the different screen modes follows. MODE 1 - This is the de- fault mode used when the unit is first turned on. It has the following features: MODE 2 . This is the same as mode 1 except it has FAST ...
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Lowrance electronic X-20A - page 16
CHART ALARM To set the Chart Alarm, press the CHART ALARM key on the keyboard. The words " Chart Alarm" flashes in the lower right corner of the screen. A vertical bar also displays on the left side of the screen. It will stay on the screen for eight seconds or for eight seconds after you have finished adjusting it. This is the Chart Alar ...
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