place
near the top of the chart
paper. A zero adjust
control has
been placed on the back inside
wall of the X-1 6 near the
upper
left hand corner so that the zero
line position may be adjusted on
the paper.
Open the case front and look for
the decal marked "ZERO
ADJUST". You may
have to pull
the paper transport assembly
down to see the decal for the first
time. Push the transport closed
and turn on the unit. (CAUTION
— Keep hands away from the
stylus belt and stylus. High volt-
age is present.)
Insert a 6-8' long screwdriver
with a l/g" blade into the zero
adjust hole and rotate the control
until the zero line is at the desired
position. (Note: this may also be
adjusted with the unit turned OFF.)
Adjust
the control, then remove
the screwdriver and turn power
back ON. Repeat until the zero
line is in the desired position.
IV HOW TO READ GRAPHS
'rched Signatures"
A remarkable advantage of the
X-16 is that it can record individual
fish with a characteristic arched
mark that separates them from
their stationary surroundings. The
reason for this is shown on page
10. (The distance to a fish when it
moves into the sonar's cone of
sound is shown as "A" in Figure
22). When the fish has moved to
the center of the cone, the dis-
tance to it will be shorter, (line
"B"), and as it moves out of the
cone, the distance will increase
again as shown in line "C".
8. Close
the front of the case.
Latch both catches on the top
of the case.
STYLUS BELT REPLACEMENT
CAUTION — High voltage is
present in the electronic section
when the unit is turned on.
1. TURN THE UNIT OFF.
2. Release both catches on the
top of the case. Pull out and
down on the top of the case
front and the platen to expose
the stylus belt.
3. The stylus belt rides over two
pulleys located at the right edge
of the transport assembly.
Move
the front of the belt DOWN to
position the stylus at the center
of the platen.
4. Grasp the belt at the stylus
holder with the thumb and fore-
finger and move it gently
to the
left while
pushing the belt off
the pulleys with the other finger.
(See Figure 37.)
5. Position the new belt on the
pulleys by reversing
the pro-
cedure used to remove the old
one. BE SURE the fingers of
the new stylus are pointed UP.
6. Close the front of the case.
Latch both catches at the top of
the unit.
MAINTENANCE
Remember,
the stylus may be
damaged if it is in front of the
platen when the transport assem-
bly is pulled down. Always move
the
stylus to'the back side of the
transport assembly when chang-
ing the paper. The
stylus belt
should be rotated down to remove
the stylus. Never rotate the stylus
belt up.
Black carbon dust is created
during the recording process. Use
a soft, oil-free rag to clean the
viewing door and transport assem-
bly. Low pressure compressed air
may
be used to blow dust out of
the case and away from moving
parts if the air is dry and free of oil.
After
every
five rolls of paper,
the
stylus
belt and pulleys it rides
on should be wiped clean with a
soft rag moistened with alcohol to
remove carbon dust.
All mechanical connections
should be checked periodically
to
be sure they haven't worked loose.
Do not apply any type
of lubri-
cant to the motors or
gear
trains.
High voltage
is present in the
transmitter section when the unit
is on. No attempt should be made
by any unauthorized person to
modify or repair
the electronic
section.
If
corrosion should occur at the
power plug, fuse holder, power
cord splices, or battery connec-
tions, clean as required and check
to make sure that good contact is
being made at all terminations.
The face of the transducer,
if
exposed to the water, should be
FIGURE 22
If a partial arch occurs most of
the time
on your unit, (the
mark
curves up, but not back down, or
vice-versa) it is because the trans-
ducer is not pointed straight down.
If your
transducer is mounted on
the transom, adjust
the transducer
until the fish show the distinctive
arched signature. This
may
take
some trial and error until the
correct mounting is achieved.
FIGURE 21 a :4rwt:rr:
-' ,-,t - -7' _i'"- -.
- ____
,— fl.8 r——r
U E1-—
D2rt-z----- LUWRSS
FIGURE 23
FIGURE 37
12 17
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