SuperNAV GPS-3505C, Руководство пользователя

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on our website. You are responsible for installing updates or
upgrades on your PNA.
2. Navigation
Routing by the PNA is for guidance only and not a substitute for
the experience and judgment of the driver.
3. On receiving a signal.
Many factors such as high, dense buildings, tunnels,
underground parking, under dense trees, various weather
conditions, and the shutting down of one or more of the satellite
system will affect the ability to receive signal, resulting in
inaccurate position.