
Now
press
thekey nexttothe"IncreaseWPT"or"DecreaseWPT"label
untilthe
desiredwaypoint num-
ber appears on the screen. _______
Whenit
does, simplypressthe
key
nexttothe"Goto
Waypoint"
label.TheGlobalNav
II returns
tothelastusedscreen, show-
ing navigation data to the
waypointyourecalled.
ROUTES
Aroute gives you
the
ability
to
navigate toseveral
waypoints
withouthavingto re-program
the unit after arriving at each one. Arouteconsists of twoor more
waypoints. When youtravellon a route, the GlobalNav II first shows
navigationinformation tothe
first
waypoint intheroute. Whenyoureach
the first waypoint,(signalled by the Arrival Alarm), the GlobalNavII
automaticallysequences tothenext
waypoint.Navigation information is
showntothis
waypoint
andthe
processrepeats.When
youreachthelast
waypoint in a
route, thearrival alarm sounds untilyouturnitoff.
Therearefourstepsrequiredtocreateandfollowaroute.First,youmust
createand nametheroute. Next,selectthe
waypoints usedintheroute.
Then
determinethe
startingwaypoint. Next,tellthe
unittofollowtheroute.
Finally, the unit will ask you if you wish to run the routeforward or
backward. Afterthesestepsare completed, the GlobalNav II will start
showing navigation datatothefirst
waypoint ontheroute.
CREATING AROUTE
Tocreate a route,firstpress
theROUTE key.Next, press thekeynext
tothe"Save/Edit Route"label.Thescreen shown belowappears.
Thismenu letsyou select
the
routenumber, namethe
route,
andchoosethewaypoints used
in theroute. Selectthe route
thatyouwishtocreatebypress-
ing the key next to the "In-
crease" or "Decrease' RTE#
labels.Whenthedesirednum-
ber
appears,you
cancreateor
modifyit.
The GlobalNav II has a five
channelGPSreceiver.Dataon
each channel isshownatthe
top ofthe display. The chan-
nelsarenumberedonethrough
fiveonthe Ieftsideofthescreen.
Everysatellite intheconstella-
tionhas
a
number
assignedto
it,calledthePRN. ThePRNis
thefirstnumberinthechannel's
row.TRKstandsfor"track." If
theGlobalNavilis
tracking
the
satellite, thena'l"'isplacedin
thiscolumn. IftheGlobalNav 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
N36°09.044'
IU 95°5I].415' • MPH
r
li
II 1,1 flA"JO
U..L2 MI Ca•T I MPG
0MPG
•IiI,AJTh1
12:35:55PM
2/19/1993
appears. ELVistheelevation (height) ofthesatellite abovethehorizon
fromyourposition. AZMistheazimuth ordirection ofthesatellite from
yourposition.
Forexample, iftheazimuthofasatelliteis
1Sodegrees,then
itisduesouth.SNRisthe
signal-to-noise ratio.Thistells
youhowstrong
thesatellite's signalis.Thehigher
theSNRnumber, thebetter.
Thesatellitesthatarevisibleinthe
skyfromyourposition
areshown inthe
rightsideofthescreenunderthe"VISIBLE SATS"
heading.
Inthe
upperrightcornerof
thescreenaretheDOPSdisplays.Theseshow
you
the"Dilution OfPrecision" (DOP)forthehorizontal (HDOP),geomet-
ric(GDOP), position(PDOP), time (TDOP), andvertical(VDOP). The
GDOPisthecombination valueof
HDOP,VDOP,andTDOP.Thesmaller
theGDOP'snumber is,the better. TheGPSreceiverselectssatellites
based onGDOP,therefore
italwaystriestousesatellites thathave
good
DOPvalues. These
depend
ontheazimuthandelevationofthe
satellite,
and
anyground basedobstructions.
Remember,thesmallerthenumber -thebetteronall oftheDOPs.
Atthe bottomofthescreen arethePresentPosition (POSITION),Speed
OverGround
(SOG), Course OverGround (COG), Distance To Go (to
waypoint) (DTG),Bearing (towaypoint) (BRG),andlocal timeanddate
displays.These
displays
arecustomizable.
POSITION SCREEN
The positionscreen automatically appears after the GlobalNav II is
initializedoryou
canviewthisscreen
atanytimebypressingthe
POS
key.
Thepositiondisplay
shows
yourpresentposition
in
large numbersatthe
topofthescreen and Speed OverGround (SOG), CourseOverGround
IILAT :H 36°08.915'
LOM :U
issearching forthesatellite, thena"5"
PT
PT
I
iT
PT
PT
PT
PT
lIFT
It
It
It
It
It
It
It
It
It
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34 15
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