User Guide

Now
press
the
key
next to the "Increase WPT" or "Decrease
WPT" label
untilthe
desiredwaypoint
num-
ber
appears
on the screen.
_______
When it
does, simply press
the
key
nexttothe "Goto
Waypoint"
label. The GlobalNav
II returns
to the last used
screen,
show-
ing navigation
data to the
waypoint you
recalled.
ROUTES
A route
gives
you
the
ability
to
navigate
to several
waypoints
without
having
to
re-program
the unit after
arriving
at
each one. A route consists of two or more
waypoints.
When
you
travell on a
route,
the GlobalNav II first shows
navigation
information to the
first
waypoint
in the route. When
you
reach
the first
waypoint, (signalled by
the Arrival
Alarm),
the GlobalNav II
automatically sequences
to the next
waypoint. Navigation
information is
shown to this
waypoint
and the
process repeats.
When
you
reach the last
waypoint
in a
route,
the arrival alarm sounds until
you
turn it off.
There are four
steps required
to create and follow a route.
First,
you
must
create and name the route.
Next,
select the
waypoints
used in the route.
Then
determinethe
startingwaypoint.
Next,tellthe
unittofollowthe route.
Finally,
the unit will ask
you
if
you
wish to run the route forward or
backward. After these
steps
are
completed,
the GlobalNav II will start
showing navigation
data to the first
waypoint
on the route.
CREATING A ROUTE
To create a
route,
first
press
the ROUTE
key. Next, press
the
key
next
to the "Save/Edit Route" label. The screen shown below
appears.
This menu lets
you
select
the
route
number,
name the
route,
and
choosethewaypoints
used
in the route. Select the route
thatyouwishtocreate by press-
ing
the
key
next to the "In-
crease"
or "Decrease'
RTE#
labels. When the desired num-
ber
appears, you
can create or
modify
it.
The GlobalNav II has a five
channel GPS receiver. Data on
each channel is shown at the
top
of the
display.
The chan-
nels are numbered
onethrough
five
onthe
Ieftside
ofthescreen.
Every
satellite in the constella-
tion has
a
number
assigned
to
it,
called the PRN. The PRN is
thefirstnumberinthechannel's
row. TRK stands for "track." If
the GlobalNavil is
tracking
the
satellite,
then a'l"' is
placed
in
this column. If the GlobalNav II
—r
fl13T
12 S 21° 324° 29 H- 2:33
02 T 46° 115° 43
I
..?i
T 28° 208° 42
13020624
1 t4
1.4 T 19° '14° 35
'a}1wO1: '('I
.
soI
N
36°09.044'
IU
95°5I].415'
• MPH
r
li
II 1,1 flA"JO
U..L2 MI Ca•T I MPG
0
MPG
•IiI,AJTh1
12:35:55PM
2/19/1993
appears.
ELV is the elevation
(height)
of the satellite above the horizon
from
your position.
AZM is the azimuth or
direction
of
the satellite from
yourposition.
Forexample,
if the azimuth ofasatellite is
1
Sodegrees,
then
it is due south. SNR is the
signal-to-noise
ratio. This
tells
you
how
strong
the satellite's
signal
is. The
higher
the SNR
number,
the better.
Thesatellitesthat are visible in the
skyfrom yourposition
are shown in the
right
side of the screen under the "VISIBLE SATS"
heading.
In the
upperrightcornerof
the screen arethe DOPS
displays.
These show
you
the "Dilution Of Precision"
(DOP)
forthe horizontal
(HDOP), geomet-
ric
(GDOP), position (PDOP),
time
(TDOP),
and vertical
(VDOP).
The
GDOP isthe combination value of
HDOP, VDOP,
and TDOP. Thesmaller
the GDOP's number
is,
the better. The GPS receiver selects satellites
based
on
GDOP,
therefore
it
always
tries to use satellites that have
good
DOP values. These
depend
on the azimuth and elevation of the
satellite,
and
any ground
based obstructions.
Remember,
the smaller the number
-
the better on all of the DOPs.
At the bottom of the screen are the Present Position
(POSITION), Speed
Over Ground
(SOG),
Course Over Ground
(COG),
Distance To Go
(to
waypoint) (DTG), Bearing (to
waypoint)
(BRG),
and
local time and date
displays.
These
displays
are customizable.
POSITION SCREEN
The
position
screen
automatically appears
after the
GlobalNav
II
is
initialized
oryou
can viewthisscreen
atanytime by pressingthe
POS
key.
The
position display
shows
your present position
in
large
numbers at the
top
of the screen and
Speed
Over Ground
(SOG),
Course Over Ground
IILAT
:
H 36°08.915'
LOM
:
U
is
searching
for the
satellite,
then
a "5"
PT
PT
I
iT
PT
PT
PT
PT
lIFT
It
It
It
It
It
It
It
It
It
It
It
a
a
0
0
0
U
U
0
0
0
0
34
15
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