User Guide

The white and
green
wires are for a NMEA interface.
The AccuNavil
sends data to another electronic
navigation
devices
through
the white
wire and receives NMEA data
through
the
green
wire. If the white and
green
wires are not
used,
tape
their ends so
that
they
cannot short.
Tu uuIIlIeei d deviuw u ilie
GiobuiNavs NMEA
output,
auacn a
shielded,
twisted
pair
cable from the device's
NMEA
intput
to the white
wire on the GlobalNav Ii's
power
cable. Solder the
ground
conductor of
the twisted
pair
and the shield to the black
wire on the
power
cable.
Do
not connect the shield to the other
device. See the other instrument's
manual for more
wiring
instructions.
See the NMEA section in this
manual for more information.
GPS MODULE
INSTALLATION
The OPS module can be installed on
a flat surface or
(with
the
supplied
adapter)
on a
pole.
Mount the module in an area that
guarantees
a
clear view of the
sky
at all
times. In order for the module to receive the
signals
from the
satellites,
it
must not be obstructed. An ideal
location
is
on a cabin
roof,
or
deck. The
gunnels
also make a
good
location.
Attaching
the
pole
mounting adapter
lets
you
install the module
on a
one inch mast.
However,
for
lightning protection,
the antenna shouln't
be the
highest part
of the boat.
Surface
Mounting
-
With Access
If
you
have access
underneath the
mounting surface,
use the
gasket
supplied
with the
GPS module as a
template.
Drill four
5.5 mm
(7/32")
holes and one 17 mm
(11/16")
hole
for the
module's
cable. Attach the
cable to the module and
pass
it
down
through
the hole in the
gasket
and the
mounting
surface. Use 5
mm
screws,
flat
washers,
and lock
washers
to fasten
the OF'S module
to the
mounting
surface. Route the
cable to the GlobalNav II.
\[
,
:
DECK7
5MM SCREWS
BACK LIGHT ON/OFF
To turn the back
lighting
on,
pressthe
menu
key,
then
press
the
key
nexttothe "More" label
twice. Now
press
the
key adja-
cent to the back
igni
On Oft
label. This moves the black box
from "OFF" to the "ON"
posi-
tion. To turn the
backlights off,
repeat
the same
steps.
SPEAKER
VOLUME
The
speaker
volume
has two
levels:
high
or low.
When the GlobalNav II is first turned
on,
the
speaker
volume is
high.
To
change
it,
pressthe
MENU
key,
then
pressthe key
next
to the "More"
label twice. Now
press
the
key
next to the
"Speaker
Volume
Low
High"
label. This switches the volume from
high
to low. A
short tune
sounds,
letting you
hear the volume. To switch back to
high volume,
simply press
the
key again.
To exit from this
menu, press
the CUR
key.
PCF OFFSET
The GPS
navigation system
relies on
complex
mathematical calculations
to determine
your position
based on satellite data and other factors. One
factor is the Earth's
shape.
Since the Earth is not a true
sphere,
variations
in the
calculations have to be made to accommodate deviations. To make
matters more
complex,
not
everyone
uses the same data to
determine
what the deviations are. The size and
shape
of the
ellipsoids
that are used
to
approximate
the earth's surface are
improved
often. This can
lead to
errors if
your navigation
device uses one
ellipsoid,
while
your
chart uses
a different one. The term used for these
ellipsoids
is "Datum."
To reducethe errorfactorbetween
datum,
this unit
gives you
the
capability
to move or "offset" the
position
shown on the
display
to match the one
on
the chart. The unit will add this offset to all
position displays
at all times.
For
example, suppose you
are anchored at a location
that
is
accurately
marked on a chart. Your unit shows a
longitude position
that is .010
degrees
less than the one on the chart.
Using
the
Position Correction
Factor
(PCF) Offsetfeature, you
makethe unit read the same asthe chart.
If
you
raise anchor and
move,
the unit will
continuously
add the
change
to
all
position displays.
This makes it more
closely
match the datum used
by
4
45
17mm
(11/16')
5.5mm
(7/32")
Hole
(4 places)
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