Topcom HB 10M00 User Manual page 52

The GPS pod will be turned off automatically if no satellites are
found for 15 minutes (e.g. inside a building or under shelter).
10.4.2 GPS accuracy
The amount of satellites seen by the GPS determine the accuracy.
No signal
Inside a building or
under shelter
52
No signal
On a street with tall
buildings on both
side
Fair signal
Fair signal
On a street with tall
buildings on one
side
Good signal
TOPCOM HB 10M00
Good signal
In an open area
(with a clear view of
the sky)
Good signal