Filter
Top Products
"Set
LatlLong
ASP' label. The screen shown above
appears.
Now enter the exact
latitude/longitude
for
your position.
Remember to
enter a zero at the
beginning
of the
longitude
if it's less than 100
degrees.
The screen below
appears
after the last
longitude
number is
entered.
For
example,
lets
say
the bottom of the rudder on an inboard boat is
the lowest
part
of the boat. After
measuring, you
discover it's 4 feet
deeper
than the face of the transducer.
Turn the Z-9500 on
and
press
the MENU
key.
Next,
press
the
key
next to
the "More" label two times.
Now
press
the
key adjacent
to the "Keel Offset" label.
Finally, press
the
key adjacent
to the
"Neg.
Keel Offset" label. A menu
appears
over
the sonar screen that
says
"Enter Keel Offset 0.0" as shown below.
If
you're
east of
Greenwich,
England (east longitude), press
the
key
adjacent
to the "East/West" label.
Otherwise,
if
everything
on the
screen is
correct,
press
the
key adjacent
to the "Use Position" label.
The Z-9500
will
return to the last used loran
screen,
using
a
position
offset based on the
latitude/longitude you
entered.
ASF
N
U
Exact Pos
32° 00.45'
83° 11.33'
•
East/West
Long.
__Use
Position
I
I
Since the
deepest part
of the boat in our
example
is four feet
deeper
than the transducer's
face,
press
the
key adjacent
to the 4
label,
then
the
key
next to the 0 label. The number "-4.0"
appears
in the Enter
Keel Off. window. Now
press
the
key adjacent
to the
ENTER
label.
The Z-9500 will
automatically compensate
for the four foot difference
and
display
the
digital
bottom
depth
as
if
the transducer was four feet
deeper
than it
actually
is. For
example,
if the Z-9500
displayed
the
water
depth
as 10 feet before
changing
the keel
offset,
afterwards it
would read six feet. This is the actual distance from the
deepest part
of
our
example
boat to the bottom.
Positive Keel Offset
The transducer must be installed below the surface of the water to
guarantee
ft
will
be
in contact with the water at all times and boat
speeds.
No sonar
system
will
operate
with the transducer in air.
Therefore,
most sonar
systems
do not show the water's
depth
from the
surface to the
bottom,
but from the transducer's face to the bottom.
96
41
N ——°——,
u———0——'
a
C
C
I'ot4
Enter Exact
Lat/Long
Position
Clear
Enter
Offset
Keel
liD
bic
1ear IEnterh
PDF compression, OCR, web-optimization with CVISION's PdfCompressor