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a 60 foot
range
has zero for the
upper
limit and 60 for the
lower limit.
INTRODUCTION
REMOTE
-
An
Intelligent "repeater"
unit that receives
depth
information
from another sonar unit. A remote doesn't have a transmitter
or receiver.
However,
it does have ft's own features that are
adjustable
and
operate
separately
from the master.
RESOLUTION
-
The
ability
of a sonar unit to
separate targets
from each
other or the bottom.
RMS
-
A standard
rating
of transmitter
power output.
SCALE
-
The
markings
on a sonar unit's
display.
To determine the
depth
ofatarget, simply compare
the
target's
location to
the location of the scale
markers on the
display.
SECOND ECHO -Another echo that
registers
at
roughlytwice
the
depth
of a
target
echo. This is caused
by
the sound
waves
reflecting
off the
bottom,
strikingthe
surface of
thewater,
travellingtothe
bottom
again,
and
returing
to the surface.
SECOND FUNCTION KEY
-
A button that converts the functions
of the
primary keys
on the
keyboard.
Sonar unitswith a second function
key
have
other
keys
with two functions. You can switch functions
with the second
function
key.
SENSITIVITY
-
The
ability
of a sonar unit's receiver to
display targets.
lncreasingthe sensitivity
allows
weakertargets
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
hull.
SUPPRESSION
-
A method used in some sonar unftsto
eliminate interfer-
ence or noise.
SURFACE CLARITY CONTROL- Reduces or eliminates undesirable
sig-
nals
displayed
near the water's surface. Also called "SCC".
THERMOCLINE
-Alayerofwatercaused bythe meeting
of warm
and cool
layers
of water. Thethermocline
providesthetemperature
mostfish
prefer.
Welcome to the world of
sportfishlng
sonar.
Your Lowrance X-40
is a
high quality sonardesigned
for both
professional
and novice users. The
X-40
automatically
finds and
displays
the bottom
depth,
fish,
and structure
by
just
by turning
it on. As
you
become
familiar with
your
X-40,
try
some
of its remarkable features. "Fine tune"
the unit to
the surrounding
conditions
to
get
the most from
your
sonar.
You can
program
the X-40 to sound alarms
when the boat
goes
shallower or
deeper
than a
preset depth.
An alarm will also sound
when a
fish enters an alarm
zone. Zoom in and
separate
fish from
structure and
each other.
Only
Lowrance
gives you
the
power
to
adjust
a sonar unit
to its
maximum
potential.
TogetstartedwithyourX-40,first
readthe installationsection.
This
is where it all
begins,
and
improper
installation can cause
problems
down
the road. After
you've
read these instructions
and installed
your
X-40,
read
the rest of this manual in detail.
The more
you
know when
you get
to the
water,
the more
your
X-40 will do for
you.
Take this
manual
for reference
when
you
head to the lake.
INSTALLATION
Mounting
Install
the X-40 in
any
convenient
location,
provided
there is
clearance when tilted for the best
viewing angle.
Holes in the bracket base
allow wood screw
or
through
bolt
mounting.
Attach the
bracket to
aluminum
panelswith
sheet
metal screws. Place a
piece
of
plywood
onthe
back of thin
fiberglass panels
to secure the
mounting
hardware.
Make
certain there is
enough
room behind the unit to attach the
power
and
transducer cables.
You can route the
power
and transducer
cables
through
the
7/B"
hole in the base of the
gimbal
bracket. Then
pass
them
through
a hole in
the
mounting
surface. The smallest hole
that will
pass
one connector
through
is
3/4".
Pass the transducer connector and
cable
up
through
the
hole and
gimbal
bracket. Then
push
the
power
cable wire down
through
the bracket and dash.
After
routing
the
cables,
fill the hole with silicone
rubberadhesive
(RTV).
Offset the bracketto coverthe
majority
of
the hole.
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