Lowrance electronic X-20A SONAR User Manual


 
MODE 5
-
All
chart,
High
Speed
Scroll.
In this mode the chart scrolls
at
high speed.
The chart
speed
can be
adjusted
with
the CHART SPEED
key
if
desired.
a)
Chart uses full screen.
b)
No
digital depth
indicator.
c)
No FASTRAK.
d)
No automatic
operation
al-
lowed.
e)
No Fish l.D. feature or
Fish Alarm
f)
Chart alarm is allowed.
SIMULATOR
Your unit has a built-in simulator. All that is
required
for the simulator
to
operate
is a 12 volt D.C. source. The transducer doesn't
have to
be connected to the unit.
To start the
simulator,
first make certain the unit is turned
off. Now
press
any key, (except
the OFF
key)
and
press
the ON
key
at the
same
time. The easiest
way
to do this is to
press
and hold
a
key
down,
then
press
the ON
key.
The unit should start
scrolling
a chart
signal
across the screen and the
digital depth
display
should
show a
bottom
depth.
None
of
the
unit's features are accessible when the unit is
in
the
simulator
mode.
To turn the
simulator
off, press
the OFF
key.
To
change
the zoom
range,
first
press
the ZOOM
key.
The word
"ZOOM" flashes on the
right
side of the screen.. Now
press
the
up
arrow or the down arrow
key
to increase or decrease the zoom size.
For
example,
if
the
range
is 0-60
feet, pressing
the ZOOM
key changes
the
range
to 30-60 feet.
While the word "ZOOM' is still
flashing, press
the
up
arrow
key.
This
changes
the
zoom
range
from 30 feet to 15
feet.
Press the
up
arrow
key again,
and the zoom
range changes
to five feet.
To turn the zoom feature
off, simply press
the RANGE
key
ZOOM
-
Manual Mode
Zoom
operates differently
when the unit is
in the manual mode. First
press
the ZOOM
key.
The bottom half of the
range
is
enlarged, just
like
the automatic zoom feature.
However,
if
you
press
an arrow
key,
the
range
shifts in one foot increments.
The down arrow
key
to shifts the
range
down in one foot increments.
The
up
arrow
key
shifts the
range
up
in one foot increments. For
example,
if
the unit is on the 0-60 foot
range,
and the _______________________
manual mode is
on,
pressing
the zoom
________ _____
key,
then the down arrow
key
once
will
move the 30-60'
range
to 31 '-61'. The best
AUTO
way
to use this feature is to
change
the
RANGE
range
to a smaller
one,
then
press
the
zoom
key,
shift the
range
until
the area is
displayed
that
you
want zoomed.
For ex-
ample,
if the bottom
depth
is 50
feet,
and
you
wish to
enlarge
the area
immediately
above
it,
first
change
the
range
to 0-30
feet. Now
press
the zoom
key. Finally,
press
the down arrow
key
until
the bottom
appears.
Now
you
have a fifteen
foot
zoom window around the bottom
signal.
_____________________
DIGITAL
Built inside the Fish l.D. II is a
complete digital
sonar. 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.
At
power
on,
the
digital
flashes "0" until
it has "locked
on" to the
bottom.signal.
-.
•10
AUTO
RANGE
20
___LID
ASH ID
Lw
Eu
16
9
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