User's Manual

Chapter 5 — Using GPS
58 70 Series Mobile Computer User’s Manual
Improving GPS Performance on the Computer
Use the iGPS application to improve the performance of the GPS on
your CN70, CN70e, or CK70 computer. The integrated GPS module
has three operating modes:
• Standalone
• MS assisted
• gpsOneXTRA™
In Standalone mode, the GPS module relies solely on GPS satellites to
determine position.
In MS Assisted mode, the comptuer can determine position without
receiving GPS signals directly from satellites; instead, the computer
receives GPS signals and information provided by the cellular network.
Even when the computer can receive a satellite signal, MS Assisted can
improve position accuracy and reduce the time to determine initial
position (Time-To-First-Fix). Check with your cell phone carrier for
availability and pricing for MS Assisted service.
Qualcomm’s gpsOneXTRA Assistance technology provides enhanced
operation for Standalone GPS. This option enables the UMTS-enabled
computer to automatically download a small assistance data file from
the XTRA servers through a brief internet access session.
Another option you can configure with iGPS is the fix interval. The fix
interval defines how often the GPS should provide new information.
Larger intervals use less power, but many applications require small
intervals to work correctly. The default for fix interval is 4.
To improve GPS performance:
1) Go to Start > Settings > System > iGPS.
2) In the Fix Interval tab, enter a value for the fix interval. The default
setting is 4 and should be optimized for most applications.
3) Tap the Fix Type tab and select Standalone (1), MS assisted (2), or
Enable gpsOneXTRA (check box).
4) Click OK.
Note: Anytime you change the GPS settings, the phone module will
reset automatically. It will not affect the functionality of the computer.