Specifications

sound
pulse
has to
travel,
the
weaker it
becomes.
By
broaden-
ing
the
pulse
width,
in
essence,
a
larger signal
is transmitted and it
is
easier for the receiver to detect
it.
For this
reason,
the micro-com-
puter
in the MACH 1 automat-
ically
increases the initial
pulse
width of the unit as
deeper
ranges
are selected
by
the
operator.
NOTE: Initial
pulse
width is the
pulse
width of the unit when the
Suppressor
control is turned to
minimum.
INITIAL TRANSMIT
PULSE WIDTH
(micro-seconds)
The transmitter
pulse
width can
be increased from the initial
point
at
any
time
by rotating
the
Sup-
pressor
control clockwise. The
maximum amount of
pulse
width
Figure
10
added to the initial
transmitter
pulse
width is
approximately
800
micro-seconds. In
other
words,
if
the
range
control is set to 300
feet,
and the
Suppressor
control
is rotated to the maximum clock-
wise
position,
the transmitter
pulse
width would be 1100 micro-
seconds.
(300
initial
pIus
800
equals
1100
micro-seconds.)
Paper Speed
Control
This knob
adjusts
the
speed
of
the chart
paper.
For
good
detailed
graphs,
in shallow to medium
depths,
turn the
paper speed
con-
trol
up
to at least ¾ when
trolling.
For best
details,
turn it
up
to max-
imum.
This will show
proper
fish
arches at low
speeds
and
keeps
high
speed
information from
being compressed.
The
paper
speed
should be turned down
when
using
the unit in
deep
wa-
ter.
This will
prevent gaps
from
appearing
in the record. In
fact,
the
microcomputer
will automat-
ically
slow the maximum
speed
of
the chart
paper
when
operating
in
deep
water. The chart below
gives
the
points
where the max-
imum
speed
of
the
paper
is
slowed.
The chart
paper may
be slowed
even further
by adjusting
the
pa-
per speed
control.
Remember,
if
gaps appear
in the
record,
turn
the
paper speed
down until a
solid record is achieved. The
pa-
the
take-up
core.
Don't rotate the
stylus
belt
up.
Don't use
oily
cloths,
strong
sol-
vents,
or abrasive cleansers.
TROUBLESHOOTING SECTION
Symptom
On/Off switch is
"ON",
but the
stylus
and
paper
don't move.
What To Do
Check
fuse;
check connections at
battery
for
tightness
and
corrosion.
Symptom
On/Off switch is
"ON",
have zero
mark,
but no echoes or bottom
signal.
What To Do
Be sure the transducer is
plugged
into the unit and the transducer is
in contact with the water.
Symptom
The unit is
"ON",
but
paper
does
not move.
What To Do
Tape paper
to cardboard
spool
on
take-up post.
Symptom
Recorder marks are faint or dim.
What To Do
Clean
viewing
door;
replace
the
stylus;
check
battery
connections.
Symptom
Recorded marks are
very heavy;
paper
is torn
by stylus.
What To Do
Bend the
stylus slightly
to reduce
pressure
on
paper.
VI ADVANCED
OPERATION
The EAGLE MACH 1 takes ad-
vantage
of the
micro-processor's
power, giving you options
that al-
lows it to
outperform
the vast ma-
jority
of
graph
recorders in the
sportfishing
field. To use the func-
tions in this section two controls
must be used
simultaneously.
We
urge you
to read this section
carefully
to take
advantage
of the
superior performance
of
the
EAGLE MACNi.
Lines
When the unit is first turned
on,
depth
lines are
printed
automatic-
ally
on the
paper.
If
you
desire to
turn the lines
off,
rotate the
range
control to 20
feet,
hold the marker
switch
'ON",
and rotate the
range
control to the 10 feet
position.
The
marker switch must be "ON" dur-
ing
the switch from 20 to 10 feet.
The MACH 1 will
stop printing
the
RANGE
(feet)
10 110
20
40 -2 0 0
300
400
600-1000
150
200
300
400
600
APPROXIMATE PAPER SPEED
Minimum
Paper Speed
Maximum
Paper Speed
Inches Hours Inches Hours
RANGE
(feet)
10-100
Per Mm Per Roll Per Mm Per Roil
1.0 10 3.0 3.3
140-200 0.5 20 2.0 5.0
300-600 0.2 50 1.2 8.3
1000
0.2 50
—
0.75 13.3
2H
3b
LI9
ED ER6LE
2H
BE
L9
bE
H
b
L19
ED
----——--—-——---—
ERDLE
2H
Sb—
ED
Figure
32
-
LINES
"OFF"
Figure
33 LINES "ON"
6
15
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