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NMEA COMMUNICATION
The UItraNavGPS
sends data out the white wire on the
power
cable
according
to standanis
set
by
the NMEA
Association).
This
allows the UltraNavGPS
_____________________
to send
position,
depth,
and
navigation
infor-
mation to "listener'
units,
such as
charting
instruments, autopilots,
and other marine
instruments.
The UltraNavGPS uses the
following
NMEAdata
protocols:
NMEA 0180
and 0183.
NMEAO18O sends
steering
intor-
mation
only.
Its useful
mainly
for
autopilots.
NMEAO183 sends
depth, position, steering,
speed,
and
more. In order to use this
feature,
the white
wire on the
power
cable
must be connected to the
NMEA data
input
on the
other instrument. See the installation
section
in this manual for
wiring
connection
information.
Oncethe
wiring
is connected
properly,
the UltraNavGPS must be told which
data format to use. Consult the owner's
manual of the "listener"
equipment
to see which format it needs. Then set the UltraNavGPS
as follows:
First, press
the MENU
key
while a
GPS or
plotter
screen is
displayed.
Next,
press
the
key
next tothe
"Change Setup"
label. Now
press
the
key
adjacent
tothe"More" label untilthe "SELECTNMEAOUTPUT"
label
appears.
Press
the
key
next to this label. The screen
shown above
appears.
The data lormat
currently
in use shows at
the
top
of the screen. Press the
key adjacent
to the desired data
output.
The UltraNavGPS will return
to the
last used GPS or
plotter
screen,
and send NMEA data out the white
wire on
the
power
cable.
PRESET
The Preset feature returns all sonar and
GPS units to their
original
factory
settings.
This resets the units of
measure, speaker
volume,
automatic
mode on the sonar
side,
display
contrast,
and more. This doesn't erase
any
waypoints
or
routes,
however.
To
preset
the
unit,
press
the
MENU key
until the "PRESET UNIT" label
appears.
Press the
key adjacentto
that
label. The menu screen
disappears
and the UltraNavOPS
returns to the GPS
position
screen. All units
will be
returned to their
factory settings.
AUTOMATIC
When .the UltraNavGPS
is first turned
on,
the Automatic
feature is
enabled. This is indicated
by
the word "AUTO" at the
top
of
the screen.
The Automatic feature
adjusts
the
sensitivity
and
range
so the bottom
signal
is
displayed
in the lower half of the screen at all
times.
To turn Automatic
off, simply press
the
AUTO
key.
The letters "Man"
appears, indicating
the unit is in the manual
mode. To turn Automatic
on,
press
the
AUTO
key again.
AUTOMATIC
MODE ON
SENSITIVITY
The
sensitivity key
on the UltraNavGPS
controls the
ability
of the unit to
pick up
echoes. A low
sensitivity
level excludes
much of the bottom
information,
fish
signals,
and other
target
information.
High sensitivity
levels enables
you
to see this
detail,
but
it can also clutter the screen with
noise.
Typically,
the best
sensitivity
level
shows a
good
solid bottom
signal
with
Grayline
and some surface
clutter.
When the UltraNavGPS is in the Automatic
mode,
the
sensitivity
is
automatically adjusted
to
keep
a solid bottom
signal
displayed, plus
a little
more. This
gives
it the
capability
to show fish and
other detail.
(National
Marine
Electronics
SONAR OPERATION
OUTPUT
IS:
OFF
Select
NMEA
SELECTION SCREEN
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