800' & Below
14 7
RANGE
the control too far or it will gray
line on the target completely,
showing no black, which makes
the target
difficult to see.
- 12
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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 comprçssed. 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
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
,
:
pearing in the record. In fact, the
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'llO' Fastest Paper
DOWN to position the stylus at
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-
lus holder.
Speed
120'-490' Medium Fast
Paper Speed
500'-790' Medium Slow
Paper Speed
Slowest Paper
Speed
The chart paper may
be slowed
5. Before installing the new sty-
lus, be sure it is bent properly
by camparing 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
.
'
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
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 X-1SA's
range capabilities.
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).
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
Lower Limit
When you first turn on the
X-15A, the range will be 0-60 feet.
(See Figure 13.)
To change to a deeper range,
8. Close the front of the case. weedy bottom returns a weaker simply press the desired depth on
Latch both catches on the top
of the case. signal which is emphasized with a
narrow gray line. Do not advance the keyboard, and then press
the
LOWER LIMIT
key.
Figure 12 GRAYLINE "ON"
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