REVISION C
BMX SERIES III CONSOLE
34
PACIFIC RESEARCH & ENGINEERING
The MUTE control input may be used to remote control the mute function of the Control Room Monitor
Module. Typical applications include operations where two on-air consoles are used in the same room,
such as a second console for news and sports programming.
The TALKBACK control output is a current-sinking open collector, which is active (low) whenever
the Control Room is receiving Talkback from another location. This command is intended for
connection to active, self-contained, headphone and monitor systems, and is used to switch the Talk To
Control Room signals into the headphone and monitor circuits. Such headphone and/or monitor
systems are usually provided to co-host and news positions in a Control Room.
The MUTE control output is a current-sinking open collector, which is active (low) whenever a Control
Room microphone is ON. This command is provided for interface to intercoms, telephones and/or other
external equipment which may need to be muted whenever a Control Room microphone is “live”.
The DIM control output is a current-sinking open collector, which is active (low) whenever Talkback
is occurring from the Control Room to another location. This command is provided for similar
applications as the MUTE command.
The C/R WARNING tally is a 12 volt DC, 150 mA maximum, source output for connection to a
magnetic or solid-state relay unit for driving the Control Room entry warning light(s).