Garmin GPS 89 - Manual (Page 25)

Going To a Dcstinatioii
One of the many benefits of GPS navigation is the ability
to ily direaly to a waypoint or fly a chain of waypoints with­
out relying totally on ground-based navigation aids. To take
advantage of the convenience and efficiency of point-to-
point GPS navigation, the GPS 89 provides three methods of
selecting a destination for your (light; GOTO, TracBack and
route navigation.
The GOTO function provides a fast way to set a course
to a destination from your present positicm, while the route
function allows you to create a chain of waypoints to fly in
sequence toward a selected destination.
'«WE FROM' WAYPOINr
BOF
MAP ‘ACTtVE TO' WAYPOINT
Whether you’re (lying a GOTO course or a route, there
are a few basic concepts and terms that apply to all point-to-
point GPS navigation. Routes are broken down and navigat­
ed in smaller segments called 'legs’. The diagram above
shows a basic route consisting of five waypoints and four
legs. The waypoint you ate going to in a leg is called the
‘active to' vraypoint (MAP), and the waypoint immediately
behind you is called the 'active from’ waypoint (SGF). The
line between the ‘active to' and the ‘active from' waypoint is
called the ‘active leg’. When you aaivate a route with the
GPS 69, it will automatically select the route leg closest to
your position as the aaive leg, and provide navigation guid­
ance directly to the ‘active to' ■waypoint of that leg.
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