User Manual

6 Hughes 9250 BGAN Terminal User's Guide 1.1
POWER UP AND CONNECTION TO THE INTERNET
After power is applied, the Hughes-9250 Terminal and Hughes Tracking Antenna will begin their
start-up sequence. The tracking antenna will begin its search of the BGAN satellite and the
antenna motors may be heard during this time. Note that the tracking antenna must have line
of sight of the BGAN satellite. Once the antenna has locked onto the BGAN satellite, it will
continue to make minor adjustments to acquire optimum signal strength. The antenna may be
heard ‘twitching’ during this time. Eventually the antenna will sit at an optimum position while
the vehicle is stationary.
Refer to the Hughes 9201 Terminal User Guide for instructions on
 How to connect a Personal Computer or Mac to the terminal.
 How to establish a data connection to the Internet
 How to use the Automatic Context Activation Feature
 How to use the LaunchPad user interface
 How to connect and use ISDN terminals
Once the vehicle starts moving, the Hughes Tracking Antenna will automatically track the
satellite signal and keep the antenna pointed towards the satellite. During short outages (e.g.
while driving under a bridge, etc.) the antenna will remain in the same position and will pick up
the satellite signal immediately. For longer outages the antenna may need to repeat the search
pattern to reacquire the satellite signal.
;
Note
Only ‘best effort’ performance can be expected under moving conditions due to
the higher probability of obstruction of satellite signal and limitations of the current
BGAN system. Signal outages of more than 3 seconds will cause circuit switched
calls to drop and packet switched sessions to pause. User intervention may be
required to reactivate connections for longer outage durations