User's Manual

HUDGPS
User Manual
Rev.A00
24
GlobalTop Technology Inc.
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th
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© Copyright 2006 GlobalTop Inc.
¾ Inside the tunnel, GPS signal is blocked.
¾ Covers above, GPS signal is blocked.
¾ Inside buildings, GPS signal is blocked.
¾ Beside some buildings, GPS signal is disturbed.
¾ Inside forests, or too many covers, GPS signal is
disturbed.

If you use HG-100 inside the car, some anti-sunlight windscreen film will make
the GPS signal degraded or signal blank.
 GPS satellite is owned by America military; sometimes they will tune-down the
accuracy by some reason. In such cases, the GPS position may not fixed
exactly.
