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Press the
up
arrow
key
to decrease the
zoom
size, press
the down arrow
key
to
increase the zoom size.
When the
unit is switched into the zoom
mode,
the tellers
"ZM"
appear
at the
top
of the screen. The zoom window size
displays
in the
top right
corner of the
screen.
To turn the zoom feature
off,
press
the
menu
key
until the RANGE/ZOOM
menu
apears.
Now
press
the
up
arrow
key.
This switches the unit into
the
range mode,
feature off.
Zoom
-
Manual
Operation
E
ZM——20
3IAFT
ZOOM
SIZE
'-
Wa
2OFT
C
To
operate
the zoom feature
when the X-25 is in the manual
mode,
first
press
the menu
key.
Then
press
the down arrow
key
in the
RANGE/ZOOM
menu to
place
the X-25 in
the
zoom mode. The zoom size menu
automatically appears
next. You can
change
the zoom size
by pressing
the
up
or down arrows. After
you
select the
desired zoom
size,
press
the menu
key
until the "MOVE ZOOM" menu
appears.
This menu lets
you
move the zoom
window
up
or down in one foot increments
by pressing
the arrow
keys.
Thus,
you
can move
the zoom window
up
towards
the
surface,
down to the
bottom,
or
anywhere
in between. The window
stays ____________________
where
you put
it. It doesn't track the
bottom
signal.
To turn the zoom feature
off,
press
the menu
key
until the RANGE/
ZOOM menu
appears.
Now
press
the
up
arrow
key.
This switches
the unit into the
range
mode,
which
turns
the
zoom feature off.
TRANSDUCER CONE ANGLES
The sound waves from the transducer
spread
out into the water
in a
cone
shaped
beam. This looks much
like the beam from
a
flashlight.
The
angle
between the outside
edges
of the cone is the cone
angle.
Lowrance offers a choice
of transducers with either
an 8 or 20
degree
cone
angle.
The transducer
supplied
with the
X-25 has a 20
degree
cone
angle. Typically,
wide cone
angle
transducers
(20 degrees)
are
ideal for
operating
in shallow to medium
water
depths.
The 20
degree
cone
angle
allows
you
to see more of the
underwater world. In 15
feet of water the
20
degree
cone covers
an area about six feet across.
The 8
degree
transducer covers
only
about
a two foot circle.
The 20
degree
transducer is almost
always
the best to use
in
fresh
water,
the 8
degree mostly
in salt water.
In a
deep
water environ-
ment, (300
feet
-
fresh
water,
100 feet
-
salt
water)
the narrow
cone
angle
is more desirable. Since the
sound
energy
is concentrated
in a
smaller
area,
it can
penetrate
to much
deeper depths..
which turns the zoom
C
ZM——2O
34I4FT
C
50'
100'
150'
200'
8 DEGREE
8
17
20 DEGREE
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