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 JALJTO J
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64 9
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