Pa-Buss Connector; Pa-Buss Chain - Tech Works CI Series System Planning Manual

The PA-BUSS (Audio Distribution Buss) has four signal pairs for one-way communication:
"Buss Power"
"Program" (Audio Option)
"Page/Communications" (Audio)
"Alert"
AMPLIFIER_INPUT_(+)
AMPLIFIER_INPUT_(-)
SOURCE_ACTIVE_(+)
SOURCE_ACTIVE_(-)
Typical PA-BUSS Chain:
POWER
"SOURCE"
AUDIO
PA-BUSS
OUTPUT
CONTROL
The "Audio Monitoring" may be selectable, adding together the audio sources as desired.
A separate Audio pair, "Program" may contain External Music or Program material.
"Amplifiers" may respond to an "ALERT" logic signal, by muting Music, and outputting
Page/Communications, or other action.
An "Amplifier" is defined as any Unit having a PA-BUSS Input.
Each PA Buss has one "Source", and a "Chain" of "Amplifiers".
The Source provides Line Level "Page/Communications" Audio, and Control Signal.
A Power Pair is provided for Amplified Speakers, or Microphone Pre-Amplifiers.
The Source and Amplifiers in the "Chain" may share a Power or Control Connection.
The Amplifier may supply power to the Source, or The Source may supply power to the Amplifier.
The supply of power is one or the other, or neither, not both (Jumper Options).
The Audio and Control signal paths are Galvanically Isolated using Transformers and
Opto-Couplers.
Sources and Amplifiers may be locally bonded to Earth by a metal stud on each chassis.
10/29/2019 Tech Works CI-Series Systems Planning & Installation Manual
(Option) Current Limited, 23-Volts
Background Audio or Music
Page/Monitor/Communications Audio
(Control) Indicates Action is Requested
PA-BUSS, AMPLIFIER: Internal Signal Connections, to RJ-45 Connectors
AMPLIFIER "INPUT" CONNECTOR
POWER_(+) (1)
Power I/O Option (+)
POWER_(-) (2) Power I/O Option (-)
PROGRAM_(+) (3)
(4)
(5)
PROGRAM_(-) (6)
(7)
(8)
Signal Pairing: (1,2) Power I/O; (3,6) Program/Music or Alert Status; (4,5) Audio; (7,8) Control
POWER
"AMPLIFIER"
AMPLIFIED
SPEAKER
AMPLIFIER "OUTPUT" CONNECTOR
(1) POWER_(+)
Power Pass-Thru Option (+)
(2) POWER_(-)
Power Pass-Thru Option (+)
(3) PROGRAM_(+)
(4) AMPLIFIER_OUPUT_(+)
(5) AMPLIFIER_OUTPUT_(-)
(6) PROGRAM_(-)
(7) SOURCE_ACTIVE_(+)
(8) SOURCE_ACTIVE_(-)
"AMPLIFIER"
SPEAKER
AMPLIFIER
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