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DGPS
(Differential GPS)
BEACON RECEIVER SETUP
You'll have to tell the UltraNav II which beacon receiver's data to
expect
and
setup
the
parameters
for
that data.
To do
this,
first
press
the MENU
key,
then
pressthe key
nextto the 'CHANGE GPS SETTINGS"
label. Now
press
the
key
next
to
the "SELECT NMEA" label.
The
screen on the
previous page appears.
Pressthe
key
nexttothe desired beacon receiver.
The beacon receiver is
selected,
now
you'll
need
to
set it
up
for the
frequency
and bit rate of the station
you'll
be
using
in
your
area.
Repeat
the above
steps
to
get
the NMEA screen as shown on the
previous
page.
Now
press
the
key
nextto the "SETUP BEACON" label. The
screen
shown
below
appears.
The station
frequency
and bit
rate
are shown on the
right
side
of the screen. Press the
key
adjacent
to the INC FREQ" to
increase the station
frequency
orthe DEC FREQ"to decrease
it. Do the same for the bit rate.
(NOTE:
For automatic station
selection on the Starlink MRB-
2A
ONLY,
set the station fre-
quency
to
zero and
ignore
the
bit
rate.)
When the station
frequency
and bit rate are
adjusted
to their
proper settings, press
the
key
next to the "EXIT' label. The UltraNav II
returnstothe last used GPS screen. The letters "DGPS"
appear
nexttothe
"POSITION" on all screens that show
your present position,
showing
that
the beacon receiver is
working.
Toviewthe status of thebeacon
signal, pressthe
MENU
keyuntil
thefourth
menu
page appears.
Now
press
the
key adjacent
to
the "DIFFERENTIAL
GPS STATUS" label. If the bea-
con receiver is
receiving
data
from the transmitter
and
is con-
nected
properly
to the UltraNav
II,
a screen similar to the one
shown at
right appears.
This
page
shows the station ID
number,
its
frequency
and bit
rate,
the "health' of the station
(0
=
best,
5
=
worst), signal
Pole Mount
First,
thread the
pole mounting adapter
onto
the
mounting pole
or ratchet
base.
Align
the
pole
mounting adapter
so the module will face the bow of
the boat. Install and
tighten
the set screw
into the
pole mounting adapter
and
tighten
it
securely.
This should
prevent
the GPS module from
unscrewing
from the
pole.
Place the
gasket
onto the
pole mounting
adapter.
Now attach the cable to the GPS module and
pass
the cable
through
the
gasket, pole mounting adapter,
and
pole.
Set
the OPS
module on
top
of the
pole mounting adapter
and
align
the four threaded
holes in the module
with the holes in the
pole mounting adapter. Using
the four stainless steel 5 mm screws and lock washers
supplied
with the
UltraNav
II,
attach the
pole mounting adapter
to the OPS module.
This
completes
the
assembly.
If the
pole
or mast
you're using
isn't hollow or if the. hole in the middle of
the
pole
is too small for the
connectors,
use the cable
mounting adapter
supplied
with
your
unit. Thread the cable
mounting adapter
into the GPS
pole mounting adapter.
Then thread the
pole
into the cable
mounting
adapter.
Route the cable down the outside of the
pole.
ULE
POLE
MOUNTING
ADAPTER
SET
SCREW
POLE
15
OK OK OK OFF
OK OK OK OFF
ft
02 OK
OK OK ON
27 OK OK OK ON
26 BAD OK BD ON
CABLE
MOUNT-
ING
ADAPTER
POLE
72 5
CABLE
MOUNT-
ING
ADAPTER
POLE
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