Viper 210V Owner Manual - Page 26

Common errors such as entering an incorrect expiration date or incorrectly entering a digit in a credit card number can result in an authorization failure. If all of your billing information looks correct, please contact your financial institution for resolution. GPS Technology GPS Accuracy GPS is the most widely used global positioning technology. Originally developed by the US Department of Defense, GPS is used for many different applications including, offshore ocean navigation, direction finding, exploration and vehicle locating. Without Selective Availability, GPS is accurate to within a radius of 6.3 meters of a location (95% of the GPS points fall within this radius). There are inherent limitations to wireless communications and the Global Positioning System (GPS). Future of GPS Technology VIPER® 210V services leverage stable, reliable technology platforms with the ability to implement future technological advancements. VIPER® 210V is devel- oped to support emerging wireless platforms and devices to ensure future value and avoid obsolescence. The VIPER® 210V uses industry standard cellular wireless communications networks (cellular) to communicate with vehicles. Therefore, vehicles must be within cellular coverage to communicate. Cellular networks currently cover approximately 95% of populated North America. The GPS transceiver in the onboard device must have a direct line of sight with three or more of the 24 satellites in the GPS constellation to provide accurate location information. Underground parking garages, concrete enclosures and urban 26 © 2006 Directed Electronics all rights reserved