Lowrance electronic X-20 manual

X-20 INSTALLATION AND OPERATION INSTRUCTIONS LITHO IN U.S.A. 988-0105-17 •LOWRANCE ELECTRONICS, INC. 12000 E. SKELLY DR., TULSA, OK 74128 PDF compression, OCR, web-optimization with CVISION's PdfCompressor[...]

TABLE OF CONTENTS All features and specifications subject to change without notice. 29 — I A 4 I ZOOM 1 Cr AU ZOOM a ASH ID s.r jfl JLj 1 1 1 3 3 4 7 7 9 10 10 11 12 13 13 14 15 15 15 16 18 19 20 23 23 24 24 24 25 INTRODUCTION INSTALLATION POWER CONNECTIONS NOISE TRANSDUCER KEYBOARD BASICS OPERATION SENSITIVITY CHART SPEED RANGE ZOOM DIG ITAL FIS[...]

SENSITIVITY - The ability of a sonar unit's receiver to display targets. Increasing the sensitivity allows weaker targets to be displayed. Also called "gain". SCROLL SPEED - See CHART SPEED. SHOOT-THROUGH-HULL - A transducer installation which allows the sonar signals to pass through a fiberglass hull without cutting a hole in the hu[...]

electrical interference, then attach the cable directly to the battery. OPERATING FREQUENCY - Frequency of a sonar unit's transmitter Electrical interference shows as random dots on the display whenever the boat's engine or an accessory is on. The power cable has two wires, red is the positive lead and black is negative or ground. Attach [...]

The Discrimination feature on Lowrance sonar units removes many false signals from other sonars, acoustic and electrical sources, and more. FISH ALARM - An alarm that activates when a fish or suspended object is detected. FISH ARCH - A sonar with good resolution and definition can display suspended targets as upside down "Vees" or arches.[...]

KEYBOARD BASICS This section gives a brief explanation of the keyboard. Read the Operation section for a detailed description of each key's operation. ON OFF L J These keys turn the unit's power on and off. To turn it on, simply press the ON key. To turn it off, press the OFF key. [J Pressing any key generates a tone or "beep." [...]

BAIT FISH The importance of bait fish to successful fishing can't be over-empha- sized. They are the principal food 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[...]

1 MODE _______ The X-20 has five different screens" or modes of opera- tion. Use this key to switch between modes. fl 1 FISH I.D. • j This key turns the Fish l.D. feature off and on. r 1 FISHALARM I • 1101 Press both the Fish ID. and the AUTO key at L. IL. the same time to activate the Fish Alarm. This is an audible fish alarm. AUTO Turnin[...]

WATER TEMPERATURE AND THERMOCLINES OPERATION 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 [...]

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 [...]

r ci 3.; ZOOM 11 flSH D i El Fish arches are created when the cone of sound passes over a fish. The distance to a fish when the cone first strikes it is shown as "A" on the next page. When the center of the cone strikes the fish, the distance is shorter, as shown in "B". As the cone leaves the fish, the distance increases again [...]

RANGE Both 8 degree and 20 degree transducers give accurate bottom read- The range automatically changes to keep the bottom signal on the display when the unit is in automatic. The range cannot be manually 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, a[...]

iii _ta sa • •a Cu a h-in -IL, TRANSDUCERS AND CONE ANGLES 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 the outside edges of the cone is the cone angle. Lowrance offers a choice of transducers with either an 8 or 20 degree cone angle. Typi[...]

FISH I.D. MODE 3 - Big digital. 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[...]

MODE The X-20 has five different screen modes. To change modes, press the MODE key. Keep pressing the MODE key until the desired screen appears. A summary of the different screen modes follows. mode used when the unit is first turned on. p 'in —H-I AUTO When the unit is first turned on, the automatic feature is enabled. It works automaticall[...]

CHART ALARM n Li g RANGE 1 20 / When the "Chart Alarm" signal is on, the alarm is active. If you wish to view the Chart Alarm bar, simply press the CHART ALARM key. The bar will be displayed for eight seconds. Any target that appears on the left side of the screen in the area covered by the chart alarm bar will trigger the alarm. If the r[...]