Specifications

and hold the
right
arrow
key
for
example,
the bar
will start
moving
to the
right.
This
signifies
that the chart
speed
is
increasing.
There
are 32
steps
of chart
speed. By
holding
either arrow
key,
the
display
can be
speeded
up
or slowed down.
When the horizontal bar
reaches the far
right
side of
the
screen,
the chart
speed
is at its maximum
value. The ID-6300
will sound
a tone
indicating
maximum
chart
speed.
The automatic
mode or
digital
function
limits the maximum chart
speed. (The
chart bar
will
stop
one
step
from the far
right
and the audible
tone will
sound).
Turning
both
the
digital
and the
automatic mode off
will
allow the maximum chart
speed
to be attained.
At times ft is
desirable to
stop
or "freeze" the
display
to examine
an echo before ft scrolls off the screen.
Press both arrow
keys
in the CHART
section at the same time to
stop
the chart. The dashed
line at the
top
of
the
display
will
flash,
signifying
the chart
is
stopped.
Press both arrow
keys
again
to start the chart
moving
at the last chart
speed selling.
If
the
digital
sonar
is
on,
the bottom
depth
will be
displayed.
The
digital
does
not
stop
when the chart is in
the 'freeze" mode.
SCALE
There are
ten scale markers
printed
on both sides of the
display.
This
helps
to determinethe
depth
of
atarget.
For
example,
if the
range
is
0 to 60
feet,
then each
mark is
equal
to sixfeet.
Ifatarget (such asafish)
is next to the 5th
line,
then it is30 feet
deep.
(5
lines times6feet
3ofeet.)
To make it easier to use
the
depth
scale,
use
ranges
in
multiples
of
ten1
i.e.
10, 20, 30,
etc.
t÷Htj
RANGE
When the ID-6300is
in
auto-
matic,
the
ranges change
to
keep
the bottom
signal
on the
display
as
the bottom
depth
varies. At
times,
however,
ft
may
be desirable to
expand
the
range
or zoom in on a
target.
Pressing
the ZOOM
key
doubles the size of
targets
on the screen.
The
20
degree
transducer is almost
always
the
best to
use in fresh
water,
the 8
degree
mostly
in saltwater.
In a
deep
water environment,
(300
feet
-
fresh
water,
100 feet
-
salt
water)
the narrow
cone
angle
is more
desirable.
Since the sound
energy
is concentrated
in a smaller area,
it can
penetrate
to
much
deeper depths.
Both 8
degree
and 20
degree
transducers
give
accurate
bottom
readings,
even
though
the bottom
signal
is much
wider on the 20
degree
model.
This is because
you
are
seeing
more of the bottom.
Remember,
the shallow
edge
of the
signal
shows
you
the true
depth.
The rest
of the
signal
tells
you
whether
you
are over
rocks, mud,
etc.
Painttransducers
on saltwater
boatswfth athin
coatof anti-foulant
paint
to
prevent
organisms
from
growing.
If unchecked,
barnacles
and
other marine
growth
will cause a decrease
in the transducer's sensitivity.
Do not use
a metal based anti-foulant
paint
as it will
decrease
the
transducer's
sensitivity.
There are
special
anti-foulant
paints
specifically
designed
fortransducers.
They'rereadilyavailable
at most
marine
dealers.
SIGNAL
INTERPRETATION
Since
your
lD-6300 is both
extremely
sensitive
and
powerful,
it
gives
an accurate
picture
of the bottom that
your
boat is
passing.
A bottom
of firm
sand,
gravel,
shell,
or hard
clay
returns a
fairly
wide
signal.
If the
automatic
sensitivfty
is off
and the
signal
narrows down,
then
it means
that
you
have
moved over a mud bottom.
Mud absorbs
the sound
wave and
returns a
weak
signal.
Turn
up
the
sensftivfty.
If
you
have the
automatic
sensftivityturned
on,
watch
the
sensitivity
bar. As
the boat
passes
over the
mud bottom,
the lD-6300
will
automatically
increase the
sensitivity
to
maintain a
good
bottom
signal.
The
sensitivity
bar will
help you
in
determining
if the bottom
is soft or hard.
If ft increases
while in the
same
depth
of
water,
thenthe boat
has moved overa
soft bottom. If
it
decreases,
then ft is
over a hard bottom.
Of
course,
as the
water
depth
increases
or
decreases,
the
sensitivfty
will also
change.
Big
rocks or
stumps
on a smooth bottom
send
backsignals
above
the bottom level
signal.
The
height
of
the
signal depends
on the
target's
height.
As
you pass
over
a
post,
ft
will be
clearly
visible
as a short line
extending
above
the bottom
signal.
A
steep slope
returns
awide
signal,
the
steeperthe
wider.
Signals
returned from a
high
underwater cliff are
usually
the widest
of all.
SimLflated
Picture
10
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