To install the dual-antenna mode (optional)
3-26
Chapter 3: Installation
98-150471-A02
3.6
To install the dual-antenna mode (optional)
You can use the SAILOR 900 VSAT High Power in dual antenna mode with 2 ADUs, 2 ACUs
and the dual-antenna accessories kit. The kit consists of two 75 Ohm RF cables, an RF
splitter and an RF combiner. 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 ACU and a Slave ACU. The VSAT modem is connected to and configured
in the Master ACU. The Slave ACU is configured as a slave unit. It is connected with an
Ethernet cable to the Master ACU 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 subnet.
For remote access connect Master LAN 2 to Slave LAN 2. This leaves LAN 1 on the Master
for the VSAT modem control and LAN 1 on the Slave free. An alternative is to connect the
VSAT Modem, Master LAN 1, and Slave LAN 1 via an external switch.
The switching from one antenna to the other is done based on the programmed blocking
zones in the two antennas and takes effect whenever signal blockages occur from cranes
etc.
To install the dual antennas, do as follows:
1. Install the master ADU, ACU, the RX combiner and the VSAT modem as shown in figure
2. Install the slave ADU, ACU, the TX splitter as shown below.
Figure 3-25: Dual mode antenna, overview
VSAT modem
SAILOR900HP.book Page 26 Monday, July 18, 2016 12:44 PM
