HTC Touch Diamond User Manual - Page 161

Navigating on the Road 161 • Please use the GPS system cautiously. Users shall be liable for any damages resulting from negligent operation of the system. • The GPS signal cannot pass through solid non-transparent objects. Signal reception may be affected by obstructions such as high-rise buildings, tunnels, bridges, forests, weather (rainy or cloudy days), etc. If the vehicle's visor contains metal, it will be difficult for the GPS signal to pass through. • Wireless communication products (such as mobile phones or radardetecting devices) may interfere with the satellite signal, resulting in unstable signal reception. • The Global Positioning System (GPS) is built and operated by the US Defense Department. The Department is responsible for the accuracy and maintenance of the system. Any changes that the Department makes may affect the accuracy and function of the GPS system. • Do not leave your device in a vehicle or expose the device to direct sunlight to avoid overheating the battery, which could pose damage to the device or risk to the vehicle. 10.3 Downloading Satellite Data via QuickGPS Before you start using your device for GPS navigation, open the QuickGPS program first to download ephemeris data (current satellite position and timing information) onto your device. This data is needed to determine the GPS position of your current location. QuickGPS downloads ephemeris data from a web server, instead of from the satellites, using the Internet connection on your device, which can be via Wi-Fi, ActiveSync or GPRS/3G. This significantly speeds up the time for determining your GPS position. To open QuickGPS Tap Start > Programs > QuickGPS.