Publication no. 101557
Rev 14.1.1-2
Copyright 2006-2012 – STM Group, Inc.
The time in seconds to try to re-acquire the Forward Link before reconfiguring the
receiver and antenna controller (mobile antennas only).
Range: 0 to 120 sec
Set to 0 to disable
Maximum number of attempts to try a full receiver reconfiguration and search for the
Forward Link after the Forward Link has been lost.
For mobile antennas, the receiver configuration also implies the reconfiguration of the
antenna controller and re-pointing of the antenna.
Range: 1 - 15 attempts
Value 1 attempt is the default.
When the SatLink VSAT loses the Forward Link it will first try to reaquire the same Forward
Link for ‗time_sec‘.
If re-acquiring the Forward Link fails, the SatLink VSAT will do a full reconfiguration of its
receiver with the same Forward Link parameters, including sending again the configuration to the
Mobile Antenna Controller, and try again the Forward Link reacquisition. This will be done
‗attempts‘ number of times.
If the SatLink VSAT still has not been able to re-acquire the Forward Link then it will try to
search/acquire another Forward Link, the selection of the next Forward Link will be based on the
priority parameter configured for the Forward Link entries.
Note: It is recommended to set 'time_sec' to 0 and 'attempts' to 1 for fixed VSATs.
While non-zero 'time_sec' and > 1 'attempts' should be normally configured for mobile
VSATs roaming between different Forward Links (beams) and where the mobile VSAT
controls the pointing of the mobile antenna.
Note: The recommended starting point for mobile VSATs is to configure 'time_sec' to 30
seconds and 'attempts' to 5, and then tune these parameters to get optimal performance
for your installation. The tradeoff is that increasing these values reduces the probability of
searching for another Forward Link after a temporary outage but increases the amount of
time it takes for an actual beam handover.
Examples:
Configure the VSAT IDU to try to reacquire Forward Link for 30 seconds before reconfigure the receiver,
and try full receiver reconfiguration and Forward Link reacquisition 5 times before starting to search for
the next beam (Forward Link).
# dvb rx reacq 30 5
Disable extra time in the normal re-acquisition process and use the default 1 attempt to try to reacquire the
Forward Link before searching for next beam (Forward Link).
# dvb rx reacq 0 1
Note: Use 'save config' to preserve the changes to the parameter configuration.
Note: Changing the "dvb rx reacq" parameters does not require a restart, although the
new settings will take effect upon next Forward Link reacquisition.
To Next Page
Loading...