TABLE OF CONTENTS
TRANSDUCER -The element of a sonar system
that convertsthe
electrical
energy
from the
transmitter Into ultrasonic sound waves. When a return
echo strikes the
transducer, it converts the sound waves into electrical
POWER
CONNECTIONS 2 energy
which is
received and displayed by the sonar unit.
NOISE 3
TRANSDUCER 3 TRANSOM MOUNT-
A method of
mounting transducers or other sensors
KEYBOARD
BASICS 4 1. S I I...
DISPLAY
INTERPRETATION 6 on ti .e transom o. t1
e oat.
OPERATION 7
ON 7 UPPER/LOWER UMIT-These
arethe
range
limits
displayed
on
the sonar
screen or
paper. The
upper
limit is shown at the
top
of the display,
while
CLEAR 7 the lower limit
is at the bottom. For
example, a 20 to 30 foot range has20
AUTO s feet as the upper
limit and 30 feet as
the lower limit.
SENSITMTY 8
CHART SPEED 9 VIDEO GRAPH -
A
sonar unit that uses a CRT or television type
display.
SCALE 11
RANGE 11 WINDOW -
A
segment of the depth range. For example, an upper
limit
of
LOWER LIMIT 12 20 feet and a lower
limit of 50 feet creates a 30 foot window.
UPPER
UM1T 12
AUTO BOTTOM
TRACKING 13
GRAYLINE 14 ZOOM
-
A feature that
enlarges targets on the display.
DIGITAL 15
TENTHS 16
ALARMS 16
NOTE KEY 16
ZONE ALARM 17
DEPTH ALARM 18
LIGHT 19
DiSCRIMINATION 19
8CC 20
FEET-FATHOMS-METERS 21
PULSE 22
COMMAND 22
MENU #1
-
SPEAKER
VOLUME 23
MENU #2- GRAYLINE
CHECKS/LINES 24
MENU #3
-
SCALES 24
MENU #4
-
DIGITAL
AVERAGING 25
TRANSDUCERS AND
CONE ANGLES 26
SIGNAL INTERPRETATION 27
FISH SIGNALS 28
WATER
TEMP. AND THERMOCLINES 29
SURVEYING A LAKE 31
BAIT P1514 32
HOW
TO OBTAIN SERVICE 32
SCHEMATIC AND PARTS LIST 32
SPARE
PARTS 33
SPECIFICATIONS 33
GLOSSARY 34
Copyright
© 1987 Lowrance Elecfronios, Inc. All Rights Res3rved.
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