User manual

2-4 A1 User Manual
Remote operation using the d&b Remote Interface
Bridge (RIB)
The d&b RIB is housed in a 1 RU high, 19 rack mount enclosure.
Combinations of 1 to 12 mainframes (A1 or P1200A) up to 500 m
away can be directly connected to a RIB I/O port by a twin wire
bi-directional serial link.
From the front panel of the RIB each mainframe can then be remo-
tely powered on and off and its power and error status monitored.
A group of mainframes can be switched directly by the RIB front
panel MASTER ON/OFF switch or remotely via a connection to an
opto-isolated input port on the rear panel of the RIB. Remote indi-
cation of the error status of a mainframe group can also be re-
layed by the RIB.
Computer/MIDI control
The RIB can be controlled by a computer (RS232, RS422 or MIDI in-
terface) running suitable control software or by a MIDI control de-
vice. Under computer control, the following remote control and dis-
play options become available:
Remote control
−
Power On/Off switching of mainframe
−
Level control from +0 to -63.5 dB in 0.5 dB steps.
−
MUTE switching
−
Configuration switching e.g. CUT, MON, etc.
Remote status information
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Configuration switch status
−
Mute switch status
−
Level control setting
−
Front panel indicator status (ISP, GR, OVL etc.)
−
SPEAKER ID status
−
Protect status (DC protect, short circuit protect, thermal protect)
−
Heatsink temperature in °C
−
Available headroom (pre-limiter)
−
Gain reduction (due to limiter operation)