Overview
Block Up Converter Systems 6700/6900 series User Guide 17
Redundancy system control
You can control and monitor the redundancy switching
equipment:
• locally, using a Hand-held Controller 6560 connected to
the BUC 1 Serial/BUC 2 Serial connectors on the
redundancy controller
• remotely, using the optional Remote Controller 6570
connected to the Auxiliary I/O connector on the
redundancy controller
The redundancy controller
The redundancy controller is the main component of the
redundancy system. It controls the switching between the
on-line and off-line BUC and LNB. The redundancy controller
is normally installed on the antenna pedestal near the two
BUC systems. The redundancy controller is powered from the
AC mains supply.
The redundancy controller performs the following functions:
• monitors the Stream 1 and Stream 2 equipment for faults
• monitors the RF waveguide switches for switch faults
• controls the RF waveguide switch positions
• directs the IF paths via high frequency relays and splitter
networks
• supplies power to the BUCs, LNBs (when used), and
optional Remote Controller 6570
The redundancy controller communicates with the BUCs via
relay contacts. The serial interfaces of the BUCs are kept
available for separate use. DC supply connections and isolated
contact closures are available on the Auxiliary I/O connector
of the redundancy controller.
The control panel inside the redundancy controller is shown in
Figure 9.
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