GPS Reception
1. Activate the product in an area without large buildings
to improve GPS reception.
2. The temperaturerange for optimum operation of the GP
S receiver in your car is -10 ~ 50
C.
3. When using the product for the first time or after a long
period (more than three days), it may take a little longer
to recognize your current location.
It may take between five and thirty minutes to get GPS reception.
GPS reception may be impaired under the following circumstances.
1) If there is an object at the end of the GPS antenna
2) If your vehicle has metallic elements on the windshields
3) If equipment generating electromagnetic waves that interfere with the GPS
signal is installed in the vehicle e.g.: Other GPS devices such as a certain
type of wireless activated alarms, MP3 and CD players and camera alarms
using GPS.
4) If you are using a receiver connected by cable, electric interference can be
avoided by simply changing the location of the receiver (antenna).
5) On heavily overcast or cloudy days, if the vehicle is in a covered location
such as under a bridge or raised roadway, in a tunnel, an underground
roadway or parking area, inside a building or surrounded by high-rise
buildings.
6) If GPS signal reception is poor, it may take longer to locate your current
position when the vehicle is moving than when it is stationary.
4
The commercial purpose GPS has the average rage error of more
than 15 meters and therange error could be more than 100 meters
due to environmental conditions like buildings, roadside trees etc.
