3. Basic Operation
Understanding the Display
Safety Mode
In its normal standby mode, with no route selected, ROAD ANGEL
Navigator's display shows your speed, satellite reception (indicated by a
flashing 3-bar sequence – green: good satellite signal (3D fix), yellow:
searching (2D fix), red: no signal and the status of audio output:
Speed Measurement
ROAD ANGEL Navigator calculates your vehicle speed from GPS data.
The speed is updated every second and, at a constant speed, is highly
accurate. If you are accelerating or decelerating, the displayed value will lag
behind the actual speed by a small margin.
You may find a difference between the reading on your vehicle's
speedometer and ROAD ANGEL Navigator. This is because all vehicles are
manufactured with a tolerance on the speedometer to allow for tread depth,
tyre size and pressure changes.
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