DEPTH ALARMS
The
depth
alarms
sound atone
when the bottom
signal goes
shallower than the
shallow
alarm's
setting
or
deeper
than
the
deep
alarm's
setting.
For
example,
if
you
set the shallow
alarm to ten
feet,
the alarm will
sound
a tone if the bottom
sig-
nal is less than ten feet. It will
continue
to sound until
you.
mute it or
until the bottom
goes'
deeperthan
10 feet. The
deep
alarmworksjustthe opposite.
goes
deeperthan
the alarm's
digital
bottom
depth
signals.
N
alarms can be used
at the
sac
To set the
depth
alarms,
first
next to the "Set
Depth
Alarm:
appears.
To
adjust
the shallow alarm
press
the
key
nextto the
"Shal
low" label. To
adjust
the dee
alarm,
press
the
key
nexttoth
"Deep"
label. Both
alarms ad
just identically.
We'll use
th
shallow alarm as an
example
Pressing
the
key
next to
th
"Shallow" label movestheblac
box from the "OFF"
postion
the number on the
right
side
the arrow. Anew label
appear
at the bottom of the screei
CHANGE LIMIT." Press the
l
as
shown at the
top
of the
ne
right
side of the unit to enter
in this
example.
MENU
-
PAGE
1
CHART SPEED
The rate echoes
scroll across
the
screen is called the chart
speed.
It's
adjustable by
first
pressing
the menu
key,
then
pressing
the
key adjacent
to
the "ADJUST CHART SPEED"
label. The chart
speed
menu
appears
at the bottom of the
screen. Increase the chart
speed by pressing
the
right
ar-
row
key
or decrease it
by pressing
the left arrow
key.
The
percentage
of
chartspeed
in use
changes
as
the arrow
keys
are
pressed.
The bar chart also
gives
a
graphical
indication of the chart
speed.
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
GRAYLINE®
GRAYLINE lets
you
distinguish
between
strong
and
weak echoes. It
"paints" gray
on
targets
that are
stronger
than a
preset
value.
This allows
you
to tell the difference
between a hard and soft bottom. For
example,
a
soft,
muddy
or
weedy
bottom returns
a weaker
signal
which is
shown with
a 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
shows the difference be-
tween
strong
and weak
signals, adjusting
the
sensitivity may require
a
¶8
TFpuurnuth
A
ts A
different
GRAYLINE
level,
also. The level chosen
by
the Ultra II at
power
on is
usually
adequate
for most conditions.
Experiment
with
your
unit
to
find the GRAYLINE
setting
that's best for
you.
To
adjust
GRAYLINE,
press
the MENU
key,
then
press
the
key
adjacent
to the "ADJUST
GRAYLINE"
label. A screen
similar to the
one at
right ap-
pears.
Now
press
the left arrow
keyto
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 barchart
also
gives
a
graphical
indication
of
the GRAYLINE level. You
can see the
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.
FISH I.D.
The
Fish I.D. feature identifies
targets
that meet
certain conditions as fish.
The
micro-computer analyses
all echoes
and eliminates surface
clutter,
thermoclines,
and other
signals
that are undesirable.
In most
instances,
remaining
targets
are fish. The Fish I.D. feature
displays symbols
on the
screen in
place
of the actual fish echoes. There
are fourfish
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
it thinks a
target
is
a small
fish,
a medium fish
symbol
on a
larger target,
etc.
The
micro-computer
is
sophisticated,
but it can
be fooled. It cannot
distinguish
between
fish and other
suspended
objects
such as
trotlines,
turtles,
submerged
floats,
air
bubbles,
etc. Individual tree
limbs
extending
19
GRAYLINE® ON
E 1
SON
The
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of
eq
bar.
alar
alarn
navi!
To a
appe
shall
DEP
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p
res
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su59
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GRAYLJNP OFF
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the menu.
To
stop
the
chart,
press
the
"STOP"
key
in
the unit's lower
left corner. To start
the
chart,
press
the "STOP"
key
again.
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