Specifications
At
/,
the control too far
or it will
gray
line on the
target completely,
showing
no
black,
which makes
the
target
difficult
to see.
12
I'
r
p —
I
Figure
11 GRAYLINE "OFF"
STYLUS REPLACEMENT
er fish arches at low
speeds
and
CAUTION
—
High voltage
is
pre-
sent in the
electronic section
when
the unit is turned on.
keeps high speed
information from
being compressed.
The
paper
speed
should be turned down
when
using
the unit in
deep
water.
1.
TURN
THE
UNIT OFF. This will
prevent gaps
from
ap-
2. Release both catches on the
pearing
in the record. In
fact,
the
top
of the case. Pull out and
down on the
top
of the
case
front to
expose
the
stylus
belt.
(See Figure 25.)
3. The
stylus
belt rides over two
wheels located at the
right
edge
of the
platen assembly.
Move the front of the belt
,
microcomputer
will
automatically
slow the maximum
speed
of the
chart
paper
when
operating
in
deep
water. The chart below
gives
the
points
where the maximum
speed
of the
paper
is slowed.
RANGE PAPER SPEED
10,-hO' Fastest
Paper
DOWN to
position
the
stylus
at
Speed
the center of the
platen.
4. Hold the
stylus
belt
stationary
with one
finger,
and remove
the old
stylus by starting
at its
left
edge
and
moving
it
out
from under the tabs on the
sty-
120'-490' Medium Fast
Paper Speed
500'-790' Medium Slow
Paper Speed
800' & Below Slowest
Paper
Speed
lus holder. The chart
paper
may
be slowed
5. Before
installing
the new
sty-
lus,
be sure it is bent
properly
by comparing
it to
Figure
33.
6. Refer to
Figure
34to be sure
the new
stylus
is
positioned
correctly
under the tabs on the
holder. Be sure it moves
freely
in the two slots. If
not,
bend
the
stylus away
from the
edge
it is
rubbing
on until it does
move
freely.
7. After
installing,
if the
stylus
won't
print
all the
way
down
the
paper
as shown in
Fig-
ure
35,bend
the
right leg
down
so that more
pressure
is ex-
erted
against
the stainless
steel
plate.
If it
still does not
print
all the
way,
bend the left
leg
down more
(but
not so far
that it
digs
into the
paper).
8. Close the front
of the case.
Latch both catches on the
top
of the case.
'
even further
by adjusting
the
pa-
per speed
control.
Remember,
if
gaps
in
the record
appear,
turn the
paper speed
down until a solid
record is achieved. The
paper
speed may
also be slowed when
not
looking
for fish or to
simply
conserve
paper.
For more informa-
tion about
saving paper,
read the
Alternate Transmit and Print func-
tion in the Advanced
Operation
section.
GRAYLINE
CONTROL
The GRAYLINE
function can be
used to outline
the bottom contour
which
might
otherwise
be hidden
beneath trees and
brush;
it can
also
give
clues to
the
composition
of the bottom. A hard bottom
re-
turns a
very strong signal
causing
a wide
gray
line. A
soft, muddy
or
weedy
bottom returns a weaker
signal
which is
emphasized
with a
narrow
gray
line. Do not advance
,,,.
i
bD
Figure
12
GRAYLINE "ON"
RANGE
The
range
function utilizes the
keyboard
to select
any range
be-
tween 0-10' and 2540'-2550'.
Please read this section
carefully
to
get
the most out of
your
Z-15's
range capabilities.
Lower Limit
When
ybu
first turn on the
Z-15,
the
range
will be 0-60 feet.
(See Figurela.)
To
change
to a
deeper range,
simply press
the desired
depth
on
the
keyboard,
and then
press
the
LOWER
LIMIT
key..
14 7
...t '1
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