A
light
is
provided
for
operation
of the Z-5000 at
night.
When the unit
is
first turned
on,
the
lights
will flash for 6 seconds. The
sensitivity keys
are
used to turn the
lights
off and on. To turn the
lights
on,
simply press
both
the left and
right
arrow
keys
at the same time and the
lights
will
stay
on.
To turn the
lights
off,
press
both arrow
keys
at the same time
again.
The
lights
will also
go
out when the Z-5000 is turned off.
____
SENSITIVITY These
keys
control
the
graph's sensitivity.
(rhe digital's sensitivity
is
automatically adjusted4lhe
receiver
sensitivity
has 32
speeds
whiph
allows
adiustment
over a wide
range
of
conditions. The left arrow
key
decreases
the
sensitivity,
the
right
arrow
key
increases it,
AANGE
The
range keys
allow
yob
to' setect different
depth
ranges by pressing
the
up
or
down
arrow. The available
ranges.are:
10,20,40,60, 100,
200,
and 400.
AUTO TheAUTO
key
switches the Z-5000 in cr out of
the automatic mode, When the
Z5000 is first turned on, it
automatically adjusts
the
sensitivity
and
range selection,
thid the word "AUTO" will be
displayed
near the
top
of the
screen.
By pressing
the AUTO
key, you
can take control of the
Z-5000, making
manual
adjustments
as desired, When
the Z-5000 is in the automatic
mode,
the word "AUTO" will be
displayed
near the
top
of the
display,
0
SENSITIVITY
LIGHT
DIGITAL
A
complete digital
sonar is built inside the Z-5000. 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-5000 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.
-
SEWSWVIIV
AUTO
2
t
-4
4
A
4
/'
I?'
6
L.
t1"..tfls
"Jill-'-—-
tn
k=ks
-fl
+
+
—
Figure
12
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-5000
rzooM
]EL
t_OFFJrON_I
to know the bottom
depth.
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 another and
you just
want
LIGHT
The
digitalis
turned off whenever the Z-5000 is taken out
of the
automatic mode.
L
Figure
5
15
8
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