Positioning75The coordinates in the GPS are expressed in degrees anddecimal degrees format using the international WGS-84coordinate system.To use GPS data, the GPS receiver of your device mustreceive position information from at least three satellitesto calculate the coordinates of your location.Route guidanceTo use route guidance, select Navigation. Start the routeguidance outdoors. If started indoors, the GPS receiver maynot receive the necessary information from the satellites.Route guidance uses a rotating compass on the devicedisplay. A red ball shows the direction to the destination,and the approximate distance to it is shown inside thecompass ring.Route guidance is designed to show the straightest routeand the shortest distance to the destination, measured ina straight line. Any obstacles on the route, such asbuildings and natural obstacles, are ignored. Differences inaltitude are not taken into account when calculating thedistance. Route guidance is active only when you move.To set your trip destination, select Options > Setdestination and a landmark as the destination, or enter thelatitude and longitude coordinates. Select Stop navigationto clear the destination set for your trip.Retrieve position informationTo view the position information of your current location,select Position. An estimate of the accuracy of the locationis shown on the display.To save your current location as a landmark, selectOptions > Save position.Landmarks are saved locations with more information, andthey can be used in other compatible applications andtransferred between compatible devices.Trip meterSelect Trip distance > Options > Start to activate tripdistance calculation, and Stop to deactivate it. Thecalculated values remain on the display. Use this featureoutdoors to receive a better GPS signal.Select Reset to set the trip distance and time and averageand maximum speeds to zero, and to start a newcalculation. Select Restart to also set the odometer andtotal time to zero.The trip meter has limited accuracy, and rounding errorsmay occur. Accuracy can also be affected by availabilityand quality of GPS signals.