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Power Connections
TheX-40
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 has two
wires,
red is the
positive
lead and black
is
negative
or
ground.
Attach the in-line fuse holder to the red wire on the
power
cable with the
crimp
connector. The other end of
the fuse holder
attaches to the
battery
or
accessory
buss. If the
cable is not
long
enough,
splice
ordinary
#18
gauge
wire onto it. Be certain that the fuse
holder is
as close
to the
power
source
(battery oraccessory buss)
as
possible.
This
protects
the
power
cable and
yourX-40
in the event of
a short. Use a
3-amp
fuse.
The
X-40 has reverse
polarity protection.
No
damage
will occur if
the
wires are reversed.
(However,
the unit will not work until
the wires are
attached
correctly.)
on the screen.
Signals
weaker than the GRAYLINE
setting
are
displayed
in
black, stronger targets
are
gray.
It also
gives
clues to the
compostition
of the bottom. In other
words,
you
can tell if the bottom is soft or hard. A
hard bottom
returnsastrong signal causing
awide
gray
line. A
soft,
muddy
or
weedy
bottom returns a weaker
signal
which is
emphasized
with a
narrow
gray
line.
IN-DASH -A
sonar unit installed
through
a hole In the boat's dash.
Usually,
the face of the sonar is
flush or
nearly
so with the dash.
kHz
-
Kilohertz. A
measurement of
frequency.
Your Lowrance sonar
operates
at 192
Kilohertz.
(192,000 cycles per second).
LCD
-
Liquid
crystal display. Thescreenordisplay
of a
Liquid Crystal Graph
sonar
instrument.
LCG
-
Liquid Crystal Graph.
NOISE
-
Any
undesired
signal.
Electrical noise
is caused
by engine
ignitions systems,
radios,
etc. Acoustic noise is caused
bythe
vibration of
the
engine
or other mechanical sources. It
appears
on the
display
as
random dots or
lines.
OPERATING FREQUENCY
-
Frequency
that the sonar unit's
transmitter
and
receiver are tuned to.
OUTPUT POWER
-Theamplitude
of electrical
energytransmitted
fromthe
sonar unit to the transducer. Measured in
watts,
the
higher
the
output
power,
the
deeper
a sonar unit can
read,
and more
detail can be
displayed.
PEAK-TO-PEAK
-
A measurement of
the transmitter's
power output.
PIXEL
-
The small dots
or
squares
on a
liquid crystal display
or Crt.
PIXEL DENSITY -The number of
pixels per square
inch on a
liquid crystal
display.
The best
resolution is obtained when a
high
number of
pixels
are
in the vertical.
PULSE LENGTH
-
The amount of time that
the sonar transmits. This is
measured in
micro-seconds. The shorter the
pulse length,
the better the
resolution. For
example,
a 30 micro-second
pulse length
is
equal
to a one
inch resolution.
RANGE
-
The section of water shown on the sonar
display.
For
example,
3-AMP
12
VOLT BATTERY
2
35
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