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Navigating on the Road 167
• 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.
10.2 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.
To download data
Tap Download on the QuickGPS screen.
On the screen, initially, you will see the
Valid time of the downloaded data. As
time passes, the remaining days and
hours of validity will be shown.
To speed up GPS positioning, download
the latest ephemeris data when the
validity of the data expires.