Aviation Database; Operations - Garmin 55 AVD Owner's Manual

1.2 AVIATION DATABASE

The GPS 55 AVD features a built-in Jeppesen NavData
direct access to worldwide airport (with a runway of 1,000 feet or greater) and
VOR locations. Two versions of the internal database are available to cover
the entire world:
· Americas: Includes North, Central and South America.
· International: Includes everywhere except North, Central or South
America.
This database may be updated by a GARMIN authorized service center on
a one-time basis or every 28 days by subscription service. Contact GARMIN
or your local GARMIN aviation dealer for more information on GPS 55 AVD
database updates. (NOTE: Programmed routes and proximity alarms which
contain database waypoints that are deleted or moved more than 0.33 arc
minutes due to a database update will be deleted.)

1.3 OPERATIONS

You may use your GPS 55 AVD for both portable and fixed operations. The
unit may be operated from external AC power using a battery charger,
external 5-40 volt DC power using the power/data cable or cigarette lighter
adapter, or using a battery pack.
Handheld Operation:
For handheld operation, the GPS 55 AVD is powered by a AA battery pack
which should be filled with four high quality alkaline batteries commonly
found at retail stores. (A rechargeable nicad battery pack is also available.)
In order to track GPS satellites, the unit must be situated with the antenna
pointed straight up and should not be blocked by objects or people (signal
reception through thin fabric such as canvas may be adequate but degraded).
A lanyard is provided to prevent accidental dropping of your GPS 55 AVD.
(Connect the lanyard to the eyelet on the back of the unit.)
Aircraft Operation:
A mounting bracket is supplied for fixed mount installation in an aircraft.
Additionally, six feet cable with a suction cup and hardware is provided for
remote mounting of the portable antenna The unit may be operated using
aircraft power through the power/data cable or it may be operated using the
battery pack. While using aircraft power, you may wish to leave the battery
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database providing
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