
KEYBOARD BASICS
SENSITIVITY These
keys
control the
graph's sensitivi'.
(The dIgital's
Snsltivity
is
automatically
adjusted.)
The
receiver
sensitivity
has
32
speeds
which allows
adjusr,ent
over a wide
range
ot
conditions. The left arrow
key
decreases
lhe
sensitivity,
the
right
arrow
key
increases ii
ALARM KEYS
This
group
or—i
keys
control
the Z-6100s zone
alarm. It can be
used as a "fish
alarm' with
upper
and lower
limits set so
that
a
target (such
as a
fish
or
school of
fish)
will
set off
the alarm tithe
target
enters the alarm zone.
ZOOM The
rang
cthn be
expanded
or
'zoomed" on the
display by using
this
key.
ON OFF These
keys
turn
the ZM100 on and off. To turn
it
on,
simply pressthe
ON
key.
To
turn it
oil,
press
and HOLD the
OFF
key.
You must hold the
OFF
key
down for a Few
seconds in order for
the Z.6100
to turn off.
You'll nofioe a
beep every
time a
key
is
pressed.
This is
the Z61OOs
way
of
telling you
that It has
accepted
a
command.
FISH SIGNALS
The
signals displayed
on
the Z-6100
by
fish can be identified
by
Various
shaped markings
in certain
patterns,
as
opposed
to random
marks created
by noise,
or the
solid,
continUous
markings
made
by
the
bottom.
Individual fish
can,
at
times,
be
distinguished
by
a characteristic
arch
that
separates
them
from their
stationary surroundings.
The'
reaé'on for
this is shown
below. The distance to a fish when it moves
into the sonar's
cone of sound is shown as "A"
Figure
14. When
the fish has moved into
the center of the
cone,
the
distance to it will be
shorter,
"B'
and
as it
moves out of the
cone,
the distance
will increase
again
as shown in
"C".
If a
partial
arch occurs most of the
time on
your
unit
(the
mark curves
up,
but not back
down,
or
vice-versa)
it
could be the transducer is not
pointed
straight
down. If the transducer
is mounted on the
transom,
adjust
it until the fish show the distinctive
arch. This
may
take some trial
and error until the correct
mounting
is
achieved.
HIll"
Figure
2
Figure
14
B
A,r
:c
111
Sn
5
5Th701a
ted
Picture
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