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narrow or no
gray
line. A hard bottom returns a
strong signal
which causes
a wide
gray
line.
If
you
have two
signals
of
equal size,
one with
gray
and the other
without,
then the
target
with
gray
is the
stronger signal.
This
helps distinguish
weeds from trees on the
bottom,
or fish from structure.
GRAYLINE is
adjustable.
Since GRAYLINE showsthe difference between
strong
and weak
signals, adjusting
the
sensitivity may require
a different
GRAYLINE
level,
also. The level chosen
by
the X-55A at
power
on is
usually adequatefor
most conditions.
Experiment
with
your
unit to find the
GRAYLINE
setting
that's best for
you.
Toadju5tGRAYLINE, pressthe
MENU
key,
then
press
the
key
adjacent
to the ilADJUST
GRAYLINE" label. A screen
similar to the one at
right ap-
pears.
Now
press
the left arrow
key
to decrease the
gray
level.
Press the
right
arrow
key
to
increase it. The
percentage
of
GRAYLINE in use
changes
as
the arrow
keys
are
pressed.
The bar chart also
gives
a
graphical
indication of the
GRAYLINE level. You can seethe
change
on the screen
(both
on the menu
and on the chart
record)
as
you press
the
keys.
After
you've
made the
adjustment, press
the CLEAR
key
to erase the menu.
To turn the menus
off,
press
the
key adjacent
to the CLEAR
key
at the
bottom left side of the unit or wait a few seconds and the menus will
disappear.
FISH l.D.
The Fish I.D. feature identifies
targets
that meet certain conditions as fish.
The
microcomputer analyses
all echoes and eliminates surface
clutter,
thermoclines,
and other
signals
that are undesirable.
In most
instances,
remaining targets
are fish. The Fish l.D. feature
displays symbols
on the
screen in
place
of the actual fish echoes. There are four fish
symbol
sizes:
tiny,
small, medium,
and
large.
These are used to
designate
the relative
size between
targets.
In other
words,
it
displays
a small fish
symbol
when
itthinks
atarget
is asmall
fish,
a medium fish
symbol
on a
largertarget,
etc.
You can
change
the
displays
on the X-55A
by using
the win
_______________
dows feature. This
letsyou
cus-
tomize
displays
to
your
own
fishing
or
boating
situations.
This feature also
gives you
15
____________
window
display
screens on the
X-55A.
____________
The screens available in the
windows mode are divided into
two or more windows
per
screen. Each screen of windows is called a
"group". Group
"A" as shown above has the
digital displays
in one window
and the sonarchart in the other. To use the windows
feature,
first
press
the
one shown at left
appears.
The
menu at the bottom of the
_______________
screen lets
you
switch be-
________________
tween the
"pages"
of
displays.
_____________
These are lettered
"A"through
______________
"0".
Group
"A" shows first.
Press the down arrow
key
to
_____________
______________
move forward
through
the
_____________
screens. Press the
up
arrow
key
to move backward. For
example, pressing
the down
arrow
key
once shows the
_____________
group
"B" screen which is the
side scan screen. To return to
the full sonar
screen,
press
the
key
next to the "FULL CHART' label at the
top
of the screen.
Every
one of the
group
screens
can be modified to some ex-
tent. For
example, press
the
MENU
key
while
group
"A" is
displayed.
Four new labels
ap-
pear
on the
display
as shown
at
right.
Two of these labels are
window menus.
Pressing
the
key adjacent
to one of the "win-
dow menu" labels
gives you
a
menu with functionsthat relate
only
to that window. For ex-
muddy
or
weedy
bottom returns a weaker
signal
which is shown
with
a WINDOWS
_____
51.1FT
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0.0°F
II
7;
QQ
MPH
HI
Q•QMI 100
WINDOWS
key.
A screen similar to the
c
FULL CHART
A
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22 31
MAIN
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