USER SETTINGS 21
PART A: CONFIGURING SETTINGS FOR THE TRACKBOX
Operating mode depends on the way, the device is used.
Autonomous system, i.e. a plain battery model, normally
uses either
Low Power
or
Off
mode, while a device with con-
stant power supply uses
Full Power
mode (i.e. the standard
and I/O models).
NMEA OUTPUT
The NMEA port output can be turned on or off (2). This de-
vice supports a subset of NMEA 0183 v2.0 output protocol,
which is used for transferring position data between the de-
vice and a navigation system, such as a Search and Rescue
application. For the connection you also need a BWTrack-
box Data/NMEA cable (an accessory).
-
By selecting
Off
, you will turn the NMEA output port
off.
-
By selecting a transferring speed you will turn the
NMEA output port on.
When the
NMEA output
is turned on, the device will con-
sume slightly more power.
ASSISTED GPS (AGPS)
Trackbox has capability to receive assistance to the GPS re-
ceiver in order to speed up the initial position calculation.
This is very useful feature if the device is in poor satellite
coverage.
Assistance can be supplied over the Mobile Phone Telemat-
ics Protocol in a binary coded protocol message. The mes-
sage will contain ephemeric and almanac data which is
based on a rough position calculated by e.g. GSM network
parameters (Cell-ID, CI-TA etc). The assisted GPS is sup-
plied from a third party station server.
Using the AGPS does NOT affect the accuracy of the posi-
tion. If the last position fix is deemed to be too old, and the
AGPS is set, the AGPS feature is automatically used to speed
up the position determination.
The cost of the AGPS service is determined on the contract
of the service provider.
You can specify settings for ordering assisted GPS informa-
tion from a service provider.
•
Number of satellites:
Select the number of satellites (3).
However, please note that the more satellites selected,
the faster the service but the higher the charge.
•
SMS number
: Key in the SMS number of the AGPS service
(4).
Summary of Contents for TRACKBOX 2.1
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