Proximity waypoints page
SECTION
3
WPT KEY
Proximity Waypoints
Proximity alarm message. Pressing
N
will
display the position page with the bearing and
distance from the proximity waypoint indicated
on the bottom line.
The second page available from the GNC 250XL’s
W
key is the
proximity
waypoints page
. This page allows you to define an alarm circle around a selected
waypoint and is useful in defining alarm circles around towers or obstructions. Up to
nine proximity waypoints can be entered, each with an alarm radius of up to 99.9 nm.
To create or edit a proximity waypoint:
1. Press
W
and use
O
to display the ‘Proximity waypoints’ page.
2. Press
C
twice and use
O
to highlight the first available field.
3. Use
K
and
O
to enter the identifier. It may be an airport, VOR, NDB, intersection or user
waypoint. Press
E
.
4. Use
K
and
O
to enter the radius of the alarm circle. Press
E
.
If two proximity waypoints are entered and their regions overlap, you will be
informed with the message ‘Proximity overlap’. This message will be displayed each
time you turn on the GNC 250XL for as long as the overlap remains.
Warning:
If you
enter the overlap area you will only be informed of the
nearest
proximity waypoint.
To remove a waypoint from the proximity waypoints page:
1. Press
C
twice, if necessary, to obtain a cursor in the GPS window.
2. Press
\
to erase the name, and then
E
to delete.
To scroll through the proximity waypoints list:
1. Rotate
K
with the cursor inactive (or use
O
with the cursor active) to scroll through the
available proximity waypoints. The scrolling arrow prompt will indicate the direction to
scroll to view additional waypoints, if available.
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250xl manual 2 7/17/98 1:27 PM Page 52
