User’s manual NAVIGON PrimoSwitching on the NAVIGON Primo - 13 -When you connect the NAVIGON Primo to your computer using a USBcable, the internal memory is detected as the 'NAVIGON' drive. The slotfor the memory card is detected as the 'NAVIGON SD' drive.Data backups, software updates and navigation map updates can becarried out quickly and conveniently with the NAVIGON Fresh software,which you can download free of charge from the websitewww.navigon.com.If you purchase additional navigation maps but no longer have enoughspace for them in the internal memory of your navigation device, it isalso possible for you to save these maps on a memory card which youthen insert in the device. The NAVIGON Primo can use navigationmaps from both memories.2.5 Navigation with GPSGPS is based on a total of at least 24 satellites orbiting the Earth andcontinuously transmitting signals of their position and time. The GPSreceiver receives this data and calculates its own geographical positionon the basis of the information transmitted by the various satellites.Data from at least three satellites is required for positioning with anacceptable degree of accuracy. With data from four or more satellites itis possible in addition to determine the position's altitude above sealevel. Positioning is accurate to within three metres.Once the navigation device has determined your position, this positioncan be used as a starting point for calculating a route.The map data on your navigation device includes the geographicalcoordinates of all digitally recorded points of interest, streets andplaces. This enables the device to calculate a route between a startingpoint and a destination.Calculation of the current position and its representation on the maptake place approximately once every second. In other words, yourcurrent position is always shown on the map.3 Switching on the NAVIGON Primo► Press the (On/Off) key and keep it pressed until the deviceswitches on.The N AVIGATION window opens.Note: The display lights up briefly in white, indicating that you havestarted the device.When you switch on the NAVIGON Primo for the first time, you will beasked to make the following settings:► your preferred language for using for the software