TABLE OF CONTENTS
INTRODUCTION 1
INSTALLATION 1
POWER CONNECTIONS 1
NOISE 3
TRANSDUCER 3
KEYBOARD BASICS 4
OPERATION 7
SENSITIVITY 7
CHARTSPEED
RANGE 10
ZOOM 10
DIGITAL 11
FISH I.D. FEATURE 12
AUTO 13
ALARMS 13
CHARTALARM 14
FISH ALARM 15
SPEAKER 15
LIGHT 15
MODE 16
TRANSDUCERS AND CONE ANGLES 20
SIGNAL INTERPRETATION 21
FISH ARCHES 21
WATER TEMPERATURE AND THERMOCLINES 23
SURVEYING A LAKE 24
BAIT FISH 25
HOW TO OBTAIN SERVICE 25
SPECIFICATIONS 26
GLOSSARY 26
Copyright
© 1989, Eagle Electronics
All rights reserved.
All features and specifications subiect
to change
without notice.
SECOND ECHO - Another echo that registers at roughly twice the
depth of a
target
echo. This is caused by the sound waves reflecting off
the bottom, striking
the surface of the water, travelling to the bottom
again, and returning to the surface.
SECOND FUNCTION KEY - A button that converts the functions of the
primary keys to other functions.
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
cuffing
a hole in
the hull.
SUPPRESSION - A method used in some sonar
units to help eliminate
interference or noise.
SURFACE CLARITY CONTROL - Reduces or eliminates undesirable
signals displayed near the water's surface. Also called "SCC".
THERMOCLINE
- A layer
of water caused
by
the meeting of warm and
cool layers
of water. The thermocline provides
the temperature most
fish prefer.
TRANSDUCER - The element of a sonar system that converts the
electrical energy from the transmitter into ultrasonic sound waves.
When a return echo strikes the
transducer, it converts the sound waves
into electrical energy
which is received and
displayed by the sonar unit.
TRANSOM MOUNT - A method of mounting transducers or other
sensors on the transom of the boat.
UPPER/LOWER LIMIT - These are the range limits displayed on the
sonar screen or paper. The upper limit is shown at the top of the
display, while the lower limit is at the bottom. For example, a 20 to 30
foot range has 20 feet as the
upper limit and 30 feet as the lower limit.
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