
As
long
as the
"ZONE ALARM"
signal
is
displayed,
the
alarm
is
engaged.
If
you
wish
to view the zone
alarm
bar, simply press
either
the
SHALLOW SET or
DEEP SET
keys
and the bar will
be
displayed
for
six
seconds.
If the zone
alarm is set off
by
a fish or the
bottom,
the alarm will
sound
and the word
"ALARM" will be
seen at the
bottom of the
display.
If the
range
is
changed,
the zone alarm
may
need to be
changed
since
it does not
track
range
settings. Thus,
its use with the
automatic mode is
possible
but not
recommended.
NOTE:
If the
digital
is
on,
the chart bar
may
interfere with
the
digital
display
while the shallow
or
deep
alarms are
being adjusted.
The
digital
display
will return to
normal after
the zone alarm bar
disappears
and the
bottom
signal
changes depth.
CLEARING
THE ZONE
ALARM
To
turn the Zone
Alarm
off,
press
both the SHALLOW
SET and the
DEEP
SET
keys
at the
same time.
The Zone Alarm
settings
will remain in
memory
until
the Z-6100 is turned
off.
Pressing
either
shallow or
deep
set
keys
will turn
the Zone Alarm
back on with
the
previous
settings.
DIG
ITAL
A
complete digital
sonar is built
inside the Z-6100. It
automatically
discriminates
between the
valid bottom echoes
and false echoes
from
fish,
thermoclines,
or other
signals.
The
digital
display
will show
only
the
bottom
depth.
When the Z-6100 is
first turned
on,
the
digital
will
flash
"0" until
it has
"locked on" to the
bottom
signal.
Once it
has
acquired
the
bottom
depth,
it will
display
the
depth
in the lower left
of the
display.
Although
it is not
necessary
in normal
use,
to
get
the
maximum
performance
out of
your digital sonar,
stop
the
chart
by
pressing
both
arrow
keys
in the
chart section
of the
keyboard.
This turns the
Z-6100
into a
digital
sonar
only
and
allows it to
better track the bottom
signal.
One reason
to use the
digital
in this manner
would be if
you
are
going
to
travel at
high
speed
from one
part
of a lake
to
anoher
and
you just
want
to
know them
bottom
depth.
The
digitalis
turned off whenever
the Z-6100 is
taken outof the
automatic mode.
SENSITIVITY
k==1
When first
turned
on,
the Z-6100
is in the AUTO
SEARCH
mode. This
means the
sensitivity
and
range
are
automatically adjusted
by
the micro-
computer
to find and lock onto
the bottom. The
sensitivity
can be left in
the automatic
mode or it can be
manually adjusted
to suit conditions.
The
sensitivity
level is
displayed by
a
horizontal bar at the
top
of
the
display.
When the
sensitivity
is at
minimum,
the bar is
very
short.
As
sensitivity
is
increased,
the bar will
travel to the
right,
increasing
in
length
correspondingly.
When the
sensitivity
is set to
maximum,
the bar will
extend across the
top
of the
display.
sENsITIVITY
BAR
To
manually adjust
the
sensitivity, press
the AUTO
key once,
and auto
sensitivity
will be
turned off. The word
AUTO at the
top
of the
display
will
disappear,
signifying
that the Z-6100 is
in the manual
mode. To increase
the
sensitivity, press
and hold
the
right
arrow
key
until the
sensitivity
is at
the desired
level. The left arrow
decreases
sensitivity
in the same
manner Notice how
the
sensitivity
bar moves as
you change
settings.
When
you
press
the
right
arrow
key,
the
bar moves to the
right, indicating
an increase
in
sensitivity.
Pressing
the left
arrow
key
moves the
bar to the
left,
indicating
the
sensitivity
has decreased
accordingly.
You'll also
see
the
change
on the
display.
Simulated
Plc lure
Figure
4
15
8
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