Specifications
Below the
station's
TD's are the bar
graphs showing
the
signal strength
for
each station. The number at the
top
of the bar
graph
shows the relative
signal strength
with 9 the
maximum,
or
best and 0 the
worst.
Graphs
that are
solid
represent
stations
currently
in
use
by
the loran.
Again,
in
this
example,
stations Master,
'I,
and Z are
currently
in use. The
letter "R"
beneath the bar
graphs signifies
the
stations the UltraNav recommends
using. Finally,
at
the bottom of the
screen,
the water
depth
is
displayed.
On this
example,
all stations are
locked,
with
good signal strengths.
To exit this
screen,
press
the MENU
key
and choose another one.
AUTOMATIC and MANUAL MODES
The UltraNav's Loran has both automatic and manual modes. Do not
confuse this with the sonar automatic and manual modes. These are
two
independent
features.
The UltraNav chooses the stations with the best
crossing angles
and
signal strengths
when it's in the automatic mode. It does this
by
continually monitoring
the stations
signals
to determine the best ones
to use. If the unit determines one or more stations arebetterto use
than the current
ones,
it will
automatically
switch to the new stations.
However,
there are times when
you
don't want the unit to switch
stations. When
you're navigating using waypoints
is one. You must
use the same stations when
travelling
to a
waypoint
as the ones used
when the
waypoint
was saved. For
example,
if the loran was
using•
M,X,
and Y when the
waypoint
was
saved, you
must use
M,X,
and Y
to
navigate
back to that
waypoint. Otherwise, navigation
errors can
occur.
Placing
the unit in
the manual
mode
prevents
the UltraNav
from
changing
stations.
If
your present position
starts to move outside of the
circle,
the
UltraNav will first clear the
display
for an instant. Then it will redraw
your present position along
with a
portion
of
your
track near the center
of the screen. Your
present position
will
always
be on the
plotter
at all
times. You do not have to recall a
waypoint
to use the
plotter.
To clear the
plotter,
see the Plotter Menus section
Using
the Plotter with a
Waypoint
Using
the
plotter
with a recalled
waypoint
or route is an
easy way
to
see the effects of wind and current on
your
boat. To use the
plotter
in
this
manner,
simply
recall a
waypoint (see
the
Waypoint
Recall section
for more
information),
then
press
the PLOTTER
key.
A screen similar
to the one below
appears.
The "S' is
your starting
location. Thi
was
your position
when
you
recalled
the
waypoint.
The
flashing
cross is
your present position,
and the "D" is
the destination. The destination is the
recalled
waypoint position.
If
you
are
using
a
route,
it's the first
waypoint
location in the route. The doffed line
is the direct
path
or course from the
starting
location to the destination.
Follow this line to
get
to the
waypoint.
The destination
waypoint
number is
displayed
in the
plotter's
lower left
corner. In this
example, waypoint
number 10 is the destination.
Distance
To Go
(DTG)
and
Bearing
to
waypoint (BRG)
are
displayed
at
the bottom of the screen when a
waypoint
is recalled.
An arrival alarm is
available that sounds a tone when
you
come within
a
preset
distance to the destination. See the section on alarms for
more information on the arrival alarm.
PLOTFER MENUS
Pressing
the MENU
key
while
the
plotter
is
displayed gives you
a new
set of
menus,
relating
only
to
the
plotter.
A
description
of the menu
functions follows on the next
page.
U 14958,29
X: 31903.51
L
L
98799
'HI'
MW<VZ
R RR
DEPTH 50.7 FT
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