The GPS 150XL has three
magnetic variation options:
true, auto, or user-defined.
To set the magnetic variation:
1. Press and hold
M
, and use
O
to display the ‘Mag Var/Arvl Alarm’ page.
2. Press
C
and use
K
to select ‘auto mag’, ‘true hdg’ or ‘user mag’.
3. If user is selected, use
O
to highlight the magnetic variation value, and use
K
and
O
to
enter the value and ‘E’ or ‘W’. Press
C
to finish.
If ‘auto’ mag var is selected, all track, course and heading information will be corrected
to the magnetic variation computed by the GPS. The ‘true’ setting will reference all infor-
mation to true north, and the ‘user’ setting will correct information to an entered value.
The GPS 150XL’s
arrival alarm
can be set to notify the pilot with a message when you
have reached a user-defined distance to a final destination waypoint (the direct-to way-
point or the last waypoint in a route). Once you have reached the set distance (up to 99.9
units), an ‘Arrival at _____’ message will be displayed.
To set the arrival alarm distance:
1. Press and hold
M
, and use
O
to display the ‘Mag Var/Arvl Alarm’ page.
2. Press
C
and use
O
to select the arrival distance field.
3. Use
K
and
O
to enter the desired distance. Press
C
to finish.
The
nearest airport search
settings allow you to define the runway length and
surface type used in determining the nine nearest airports displayed. A minimum runway
length and surface type may be entered to prevent airports with small runways, or run-
ways that are not of appropriate surface, from being displayed. The default settings are ‘0
ft/mt’ for runway length and ‘any’ for runway surface type.
73
The runway length and surface type settings allow
pilots of large, high-performance aircraft to direct
the
T
key function to ignore those airports at
which it would be difficult, if not impossible, to
land their aircraft.
Setting the arrival alarm to 10 nautical miles.
SECTION
5
UNIT SETTINGS
Magnetic Variation
Arrival Alarm
150xl manual B 8/4/98 1:10 PM Page 73
