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To reduce the time to find your initial position, you can also make sure you have a clear view of the sky
and you are stationary.
NOTE:
on the data is set to 24 hours.
Enabling the GPS Data application might involve additional data connection charges.
To enable GPS Data:
1.
Press Start
2.
Select the Automatic Update check box.
3.
Tap Done.
After the GPS data file has been downloaded, you might see improvements in the GPS performance as
the time to find your initial position is reduced.
NOTE:
Identify the COM port for your GPS receiver
Some GPS applications require you to specify the COM port for your GPS receiver. You can find
information on the COM port by pressing Start
then noting the GPS Program Port.
Troubleshoot frequent GPS signal loss and interference
To improve the satellite signal to your phone, go outdoors and start the GPS navigation software. Place
your phone where there is a clear view of the sky or on the dashboard of a vehicle that does not have
thermal glass windshields or windows. A direct line of sight is required between the iPAQ and the GPS
satellites to access information from the satellites.
NOTE:
overcast skies. Try to avoid these obstructions before using GPS.
Interference Type
Vehicles with thermal glass windows and windshields.
Equipment radiating Radio Frequency (RF) energy or emitting
strong electromagnetic radiation. For example, microwave
ovens, high-power cordless phones, CB radios,
Walkie-talkies, HAM equipment, or X-ray and MRI machines.
Tall buildings, large trees, and very cloudy or overcast skies.
118 Chapter 22 Use AT&T Navigator and other GPS Applications
GPS Data downloads new data if the last downloaded data is expired. The expiration time
, tap Settings > Connections > GPS Data.
To disable the GPS Data application, clear the Automatic Update checkbox.
Interference might take place close to tall buildings, large trees, and under very cloudy or
, tap Settings > System > External GPS, and
How to Avoid
Place the iPAQ where there is a clear view of the sky or on
the dashboard of a vehicle that does not have thermal glass
windows.
Move away from interference source or switch off the
interference source.
Move away from interference source so there is a clear view
of the sky.
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