WelcomeIntroducing Your NAVIGON Device6 NAVIGON 2000S | 2200T Series User’s Guide December 2008NAVIGON, INC. Version 1.1About GPS navigationThe Global Positioning System (GPS) uses a constellation of up to 32 satellites thatenable a GPS receiver to calculate its geographical position.For a sufficiently precise positioning it is necessary to obtain the data from at leastthree satellites. With the data from 4 or more satellites the altitude above sea level canalso be determined.Geographical terrain (such as mountains), man-made structures (such as highwayoverpasses, bridges and tall buildings), and even weather can interfere with or disruptthe GPS signal.Once the navigation device has determined your position, it can be used as a startingpoint for route calculation.The map data on your navigation device includes the geographical coordinates of alldigitally recorded Points Of Interest (POIs), streets and places. This enables thedevice to calculate a route between a starting point and a destination.The calculation of the current position and its representation on the map takes placeonce every second so your current position is always shown on the map.If GPS reception is impaired, navigation is interrupted but the navigation softwareremains active. As soon as GPS reception is restored, the navigation system calcu-lates any change of position which has occurred in the meantime and navigation maysimply be continued.Caution! The United States government operates the Global Positioning System(GPS) and is solely responsible for its accuracy and maintenance. Changes by theUnited States government may affect the accuracy and performance of all GPSequipment, including your personal navigation device.Caution! Ordinances or laws may restrict use of certain abilities of your navigationdevice on public or private land.
