Using GPS Navigation 6 - 3
Assisted GPS
GPS can be used in stand-alone or Assisted GPS (A-GPS) modes. A Stand-alone GPS receiver downloads data
from GPS satellites. It can take several minutes to get a fix. By using GPS Location servers, A-GPS dramatically
improves the performance of the Time To First Fix (TTFF) of GPS receivers by providing them with data that they
would ordinarily have to download from the GPS satellites and other aiding data that helps the acquisition. With the
A-GPS data, GPS receivers can operate faster and more reliably.
The GPS Assist application provides the ability to modify the settings associated with obtaining GPS data.
Tap Start > Connections > GPS Assist icon.
Figure 6-1
GPS Assistance Window
To set the source of the data tap Source and select one of the options: Any (default), None.
To set the frequency of updating the data tap Update Frequency and select one of the options: On Demand
(default), 1 Day, 2 Days, 4 Days, 7 Days.
To manually update the data tap the Update Now button.
GPS Reset
To perform a factory reset of the GPS function:
1. Close all applications that are using GPS.
2. Tap the Reset GPS Hardware button. The Reset GPS Hardware dialog box appears indicating that the GPS
chip has been reset.
3. Tap OK.
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