Telenav for Nextel Supported Devices: v4.0 for BlackBerry 7520 - Manual (Page 31)

© TELEVIGATION 2003-5 PAGE 31 OF 32
How accurate is the GPS?
GPS accuracy can range from 20m to 100m, however most of the time the GPS is accurate to less than 50 meters.
What is ideal GPS environment?
The GPS requires an open, clear view of the sky. Buildings, covered parking areas, tunnels and dense foliage can
cause the GPS receiver to be unable to locate itself or have an extended initialization time (time to first fix).
If you are parked in a covered parking lot or near a tall building, it is recommended that you move into an open area
and then begin to use the TeleNav service.
How do I know that the GPS has a signal?
The TeleNav application on your handheld will alert you if the GPS does not have a valid signal. If this happens,
move to an area where there is a clear view of the sky so the receiver can hear the GPS signals from space. You
can invoke the native BlackBerry GPS application by selecting Options from the main menu, and selecting Location
Based Services. Then select “Refresh GPS”. If the screen shows “Scanning for satellites” for more than 60
seconds, you are probably in a poor GPS reception area.
Why does the GPS not work near buildings and other tall objects?
The GPS uses satellite signals from space to find out where it is. Therefore it needs a clear view of the sky. Tall
buildings and other objects that block the receiver’s view to the sky make it infeasible to determine your location.
Sometimes the satellites are not overhead but near the horizon; in these cases the GPS must have a clear view of
the horizon.
10. Customer Support
Send an e-mail with your questions or comments to the appropriate company’s Customer Service Department, or
enter a comment through the website. We monitor your e-mails and will promptly reply to your inquiries.
Televigation
265 Santa Ana Court
Sunnyvale, CA 94085-4511
T: 408.245.3800
F: 408.245.0238
www.telenav.com
Technical Support
T: 88-TeleNav-4 (toll free)
[email protected]