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General information about GPS
The global positioning system (GPS) uses a network of
US satellites to measure distance, speed and altitude.
The United States of America operates this network of
satellites and is also responsible for its accuracy and
maintenance.
Proper reception of satellite signals is only possible in
clear weather (clear skies) and suitable reception area – an
open area with an unobstructed view of the sky.
Poor weather (e.g. heavy snowfall) and a disrupted re-
ception area (GPS watch is covered by clothing or other
objects, high rises, narrow valleys and gullies inhibit
reception) can significantly affect the performance and
accuracy of the GPS watch.
GPS reception is significantly restricted in buildings:
Under certain circumstances, it may be possible to
determine one’s position in the vicinity of windows with
an unobstructed view of the sky; however, it is not
possible to receive GPS signals in other indoor areas and
in basements.
If the GPS watch is not able to receive a signal, it will
switch GPS off after 30 minutes to save battery power.
