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Speed (ground speed) is the velocity you are making over the ground. (If
you wish, you can customize the Speed data box to display Closing
Speed instead. Closing Speed is also known as velocity made good. It's
the speed that you're making toward the waypoint. For instructions,
see the Customize Page Displays entry in Sec. 5.)
Track is the heading, or the current direction you are actually travel-
ing. Bearing is the direction of a line-of-sight from your present position
to the destination. No matter what direction you are steering, the
Bearing data box shows the compass direction straight to the destina-
tion from your location at the moment. Distance shows how far it is to
the waypoint you're navigating toward.
The Off Course window shows the current cross track error. This shows
the distance you are off-course to the side of the desired course line. The
course line is an imaginary line drawn from your position when you
started navigating to the destination waypoint. The course line is shown on
the Navigation Page screen (and the Map Page screen) as a dotted line.
Navigation Page, going to a waypoint while creating a new trail.
The cross track error range is shown on the compass rose as a wide,
white, corridor enclosing the course line. The outer edges of this white
corridor represent lines that show the current cross track error range.
The default for the cross track error range is 0.20 miles.
For example, if the present position symbol touches the right cross
track error line, then you are 0.20 miles to the right of the desired
course. You need to steer left to return to the desired course. You can
use the
ZIN or ZOUT keys to change the cross track error range.
Destination
name
Navigation
information
displays
in data
boxes
Bearing
arrow
Cross track
error range
(off course
indicator)
Waypoint
symbol
Current track or
heading, shown
in degrees
Compass bearing
to destination
Trail line
Course line
Left cross track error line
Heading arrow