The web interface
98-145510-E Chapter 6: Setup and operation 6-10
6.1.5 Antenna stabilization and safety
The antenna movements of the VSAT system can be hazardous to people who are close to
the antenna. Always stay out of the Stay clear area shown in page vi and page vii. If you
have to enter the stay clear area, stop the antenna with the emergency stop button or
power off the system from the ACU.
In the web interface you can set up whether or not you want the system to ask for user
acknowledgement before moving the antenna.
The antenna also has Dynamic Pointing Correction (stabilization feature) that compensates
for movements in the vehicle e.g. if people are getting in our out of the vehicle while it is
deployed and active.
1
1. Select SETTINGS > Antenna.
2. Select the Operational mode.
• User acknowledgement (Default setting): The user interface will ask for
acknowledgement when the antenna is about to move after at least one minute
without moving. The antenna will not move until someone has acknowledged.
• No user acknowledgement: The antenna will move autonomously when
necessary, e.g. if there is a new satellite position from the modem.
• Unattended: The antenna will move autonomously when necessary, and attempt
to maintain the connection at all times, independently of the user. For example, if the
antenna enters safe mode because of an error, it will restart.
3. Select Auto stow on vehicle movement if you want the antenna to stow
automatically when the vehicle moves. This setting is disabled by default.
4. Select the Stabilization mode.
• Continuous (Default setting): The antenna continuously compensates for
movements in the vehicle to keep a stable position in relation to the satellite.
• Off: Antenna stabilization is not used
• Automatic: The antenna periodically adjusts the position to compensate for
movements in the vehicle.
5. Click Apply.
1. The antenna is designed to compensate for a change of pointing angle due to a tilt of the
platform. It is not designed for tracking on a moving platform. The pedestal azimuth and
elevation joint has an angle acceleration limit of 14 Deg/s
2
and a positioner angular speed
limit of 9 Deg/s. If the tilt speed of the platform is slow and can be compensated within the
speed limits of the joints, the connection to the satellite will not be interrupted. If the
platform movements are faster than the speed limits of the joints, the antenna will for a short
moment not point correctly towards the satellite, but it will regain the correct pointing
towards the satellite within a short time.
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