NorthStar MX500 Operator's & Installation Manual page 145

Configuration
Approach Distance:
Autopilot Alarm:
Version 3.0
Distance:
Passing the waypoint is determined by reaching an imaginary circle
around the waypoint, the radius of which you can define in WPT
Pass Distance. The default value is 0.10 Nm.
If you set this distance to 0.00, you will never pass the waypoint.
This is a great way to perform station keeping maneuvering. Refer
to the Plot Screen Use Examples in the Plot section for further
details on this application.
Bisector Line:
Passing the waypoint is determined by reaching the bisector line
of an acute or obtuse angle between your present course line
and the next leg of your route.
Perpendicular Line:
Passing the waypoint is determined by reaching an imaginary per-
pendicular line from your present course line.
Approach Alarm:
Causes an alarm to sound if your position is within the radius
defined in Approach Distance (below) when Yes is selected. To
disable the alarm, select No (the default condition) with the Change
softkey.
Sets the waypoint approach alarm distance (above) to sound if
your position is within the radius defined. The default setting is
0.30 Nm. This is a convenient tool for large boats and ships that
need to perform Transfer and Advance maneuvers prior to reach-
ing the waypoint.
Causes an alarm when your position is outside the cross-track
error limit defined in XTE Limit (above) or when you change course
to a new leg in your route (manually or automatically passing a
Operator's Manual
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