Serial Ports; Indications - How The Leds Are Used; Front Panel Leds; Fig 12-9: Rb-Oa3 Multiple Rb-Oa3 Expansion Diagram - Sonifex Redbox RB-SS10 User Handbook Manual

(available in the RB-OA3C cable pack). For the BUS EXPANSION SLAVE and STUDIO & BUS
EXPANSION SLAVE, there is no need to connect the LSO expansion cables since the LSO is
not used in bus expansion.

Serial Ports

RB-OA3 1
RB-OA3 4

Fig 12-9: RB-OA3 Multiple RB-OA3 Expansion Diagram.

Connect the serial ports of the MASTER and all the SLAVE units together using a standard
RJ45 network cable. It is recommended that a full ring system is implemented by
connecting each unit to two others.
This ensures that if one connection is lost, there is still a path for communication for each
unit. If the decision is taken to use three cables rather than four, please ensure that there is a
direct link between the MASTER and STUDIO EXPANSION SLAVES.
Indications – How The LEDS Are Used

FRONT PANEL LEDS

The unit is supplied with 7 LEDs on the front panel. These LEDs are used to indicate all the
various states of the unit:
POWER
This LED is used to indicate whether the unit is currently powered. It is illuminated RED if the
unit is powered and extinguished if not.
DELAY
This LED is used to show whether the Delay function has been activated. Its operation
is momentary and each burst will last for approximately half a second. If the button is
illuminated RED this means that the delay pulse has been activated.
DUMP
This LED is used to show whether the Dump function has been activated. Its operation
is momentary and each burst will last for approximately half a second. If the button is
illuminated RED this means that the dump pulse has been activated.
OFFER
This LED is used to show whether the system is currently in OFFER mode. This LED is
illuminated YELLOW while the unit is on offer and extinguished otherwise. If this LED flashes
this means that the unit is currently in SUSTAIN ACTIVE mode (see page 10).
STUDIO 1-3
These LEDS are used to indicate which studio is currently switched to the transmission path.
Each one is illuminated RED to represent each specific studio when that studio is switched
Redbox User Handbook No 3
GE N ER AL I N T E RFACE S
RB-OA3 2
RB-OA3 3
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