Motorola MC9500-K - Win Mobile 6.1 806 MHz, Руководство пользователя

Страница: 122 / 284

6 - 2 MC9500-K Mobile Computer User Guide
To access the GPS receiver from multiple programs simultaneously, the user can either use the Microsoft GPS API
or change the GPS program port settings and access the GPS program port using multiplexing.
Operation
Acquiring satellite signals may take several seconds to a few minutes. It is best to be outside and have a clear,
unobstructed view of the sky. Without a clear view, acquisition takes much longer and could result in the MC9500-K
being unable to compute the initial position quickly. When operating the device indoors access to the GPS signals
may be limited or unavailable.
GPS Maps on microSD Cards
GPS navigation software vendors may sell maps on microSD cards. If using a microSD card with the GPS
navigation software install the microSD memory card using procedure in
Installing a microSD Card on page 1-3
.
Answering a Phone Call While Using GPS
If you receive a phone call while using your GPS navigation software:
1.
Answer the phone call by pressing the
Answer
button.
2.
Once you end the phone call, press the
End Call
button to resume the audio on the GPS software.
Losing the GPS Signal While in a Vehicle
GPS performance on the MC9500-K may be affected if the vehicle has thermal glass windows and windshields,
which can block the MC9500-K from receiving a GPS signal from satellites. To improve GPS signal strength, place
the MC9500-K where there is a clear view of the sky. A direct line of sight is required between the MC9500-K and
the GPS satellites to access information from the satellites.
The Global Positioning System (GPS) is a system that allows the user to track their position anywhere on the earth.
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. In certain environments, it can take several minutes to get a fix. By using GPS Location
servers, A-GPS dramatically reduces the TTFF (Time To First Fix) and improves the sensitivity of GPS receivers by
providing them with data that they would ordinarily have to download from the GPS satellites. With the A-GPS data,
GPS receivers can operate faster and more reliably.
NOTE
When using a GPS navigation application, ensure that the MC9500-K does not go into suspend mode. If the
MC9500-K suspends then the power to the GPS radio is removed. Upon resume the GPS receiver must reacquire
a valid GPS signal, resulting in a a delay of positional information.
NOTE
Anytime you are using GPS on the MC9500-K and you receive a phone call, the audio on the GPS navigation
software is muted until you finish the call.
NOTE
Devices with Windows Mobile 6.5.3 contain an application that allows for connection to SUPL servers.
See
Assisted GPS on page D-19
for more information.