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12
GE N ER AL I N T E RFACE S
Bus Expansion
DIP Switch Settings
Master Transmission
M
B
Fig 12-7: RB-OA3 Bus Expansion Diagram.
Connect two units to allow the switching of 6 stereo busses between 3 studios so that
the studios can share more peripheral devices. To achieve this configure one unit as the
MASTER and one unit as the BUS EXPANSION SLAVE:
Studio Connections
Connect three studios to the MASTER unit and connect the MASTER TRANSMISSION
OUTPUT to your transmission output destination. The BUS EXPANSION SLAVE switches as
the MASTER.
To access the three extra balanced stereo channels, connect to the transmission and
peripheral paths of the BUS EXPANSION SLAVE STUDIO 1-3 AUDIO connectors. The outputs
for these paths will be the TRANSMISSION OUTPUT of the BUS EXPANSION SLAVE.
Control Panels
Connect three studio control panels to the MASTER STUDIO CONTROL PORTS 1 - 3, one for
each studio. If control panels are connected to the BUS EXPANSION SLAVE the LEDS will
simply follow the master control panels, however no action can be initiated with a slave
control panel.
Profanity Delay Connector
A profanity delay can be connected to either of the two units. However, it is recommended
that it is connected to the MASTER. See Single (MASTER) Mode set up for more information.
Mix Input
The mix input must be connected to the MASTER. Because it's not being used, ensure that
the BUS EXPANSION SLAVE mix input is terminated correctly or that the MIX INPUT ON/OFF
switch is OFF for this SLAVE (see page 12).
LSO Expansion
Leave disconnected on both units.
Serial Ports
Connect the serial ports of the MASTER and BUS EXPANSION SLAVE units together using a
standard RJ45 network cable (not a cross-over cable).
73
Redbox User Handbook No 3
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