NavRoad X5, Руководство пользователя

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Large errors adjustment
Location errors are adjusted by satellites connection, dead reckoning method and drawing to road.
In specific situations this functions may not work and error can be larger.
GPS position determine problem
If device doesn’t receiving signal from at least three satellites the navigation functionality won’t work
properly. In some conditions during driving the car signal from satellites may be unavailable or
limited. In this situations you will not be able to use the navigation system.
If there is a car phone,
cell phone or CB radio being used nearby the device, a momentary loss of GPS signal may
occure, because of the electromagnetic interferences.
If device has not been used for a long time
the vehicle positioning and indicator positioning on a map may differ from each other. Accuracy will
be restored after getting strong enough GPS signal. Such kind of situation may also occur in certain
cases while driving, for example: