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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
6
UNIT SETTINGS
Magnetic Variation
Arrival Alarm
The GPS 155XL 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 receiver. The ‘true’ setting will reference all
information to true north, and the ‘user’ setting will correct information to an entered value.
The GPS 155XL’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.
155xlb manual 1/12/99 4:06 PM Page 100