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• When your GPS antenna is covered (for example, by your
hand or other object) or facing the ground
• Ιn temperature extremes outside the operating limits of
your terminal
Even where location information can be calculated in such
situations, it may take longer to do so. Therefore, in any
emergency situation, always report your location to your
dispatcher.
Furthermore, please note that even where adequate signals
from multiple satellites are available, your GPS feature will
only provide an approximate location, often within 20 - 100
meters from your actual location.
Enhancing GPS Performance
Sometimes the GPS feature of your terminal may be unable
to complete a location calculation successfully. You will then
see a message indicating that your terminal cannot see
enough visible satellites.
To maximize the ability of your terminal to determine a
location fix please note the following guidelines:
• Stay in the open. The GPS feature works best where there
is nothing between your terminal and a large amount of
open sky. If possible, go outside, away from tall buildings
and foliage. While performance in a building is improved
by moving closer to windows, glass with certain sun
shielding films may block satellite signals.
• Position your terminal to enhance reception. Signals from
GPS satellites are transmitted to your GPS antenna, which
is in your terminal antenna. Hold your terminal away from
your body, giving the antenna clear access to satellite sig-
nals. Do not cover the antenna area with your fingers or
anything else.
6802972C35.book Page 62 Monday, August 16, 2004 9:22 PM
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