98-175666-C B-1
Appendix B
Dual antenna solution B
This appendix has the following sections:
• Introduction
• Installation of the dual antenna solution
• Configuration of the dual antenna solution
• Dual antenna software upgrade procedure
• Flow chart for installation of the dual antenna solution
• Dual antenna splitter cable
B.1 Introduction
The SAILOR XTR GX-R2 Dual antenna solution has the following features:
• Simple installation due to single cable antenna system.
• Both antennas share the same modem.
• Ensures maximum system uptime.
• Fully automatic switching to other VSAT antenna, no user intervention needed.
• Switching upon programmed blocking zones.
• Switching if tracking signal strength drops 4 dB below the signal strength in the idle
antenna.
• Switching if the ADU is malfunctioning.
• Configured using the built-in web server user interface.
B.2 Installation of the dual antenna solution
B.2.1 System overview
You can use the SAILOR XTR GX-R2 in dual antenna mode with 2 ADUs, 2 BDUs and the
dual-antenna accessories kit. The kit consists of two 75 Ohm RF cables, an RF splitter
and an RF combiner plus a modem keyline splitter cable. In case one antenna enters a
blocking zone, the other antenna of the dual-antenna system takes over and the
system continues working.
There is a Master BDU and a Slave BDU. The VSAT modem is connected to and
configured in the Master BDU. The Slave BDU is configured as a slave unit, using a
Master BDU as VSAT profile. The slave BDU is connected with an Ethernet cable to the
Master BDU from which it gets all satellite information. You can use any LAN port as
long as the Master and the Slave are in the same IP subnet. The system switches from
one antenna to the other based on the programmed blocking zones in the two
antennas and actual signal blockages from vessel structures, cranes etc.
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