Lowrance Mapping GPS Receiver Operation Instructions Manual page 35

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.
Left cross track error line
Current track or
heading, shown
in degrees
Compass bearing
to destination
Trail line
Navigation
information
displays
in data
boxes
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 or
ZIN
A circular symbol depicting your destination (waypoint) appears on the
screen as you approach the waypoint, as shown on the screen in the
preceding figure.
Travel Time is the time that it will take to reach your destination at
your present closing speed. (You can also customize the time data box
to show Arrival Time instead. Arrival Time is the local time it will be
when you arrive at the destination, based upon your present closing
speed and track.)
Course line
keys to change the cross track error range.
ZOUT
Heading arrow
29
Bearing
arrow
Waypoint
symbol
Cross track
error range
(off course
indicator)
Destination
name