Pa-Buss, Monitor/Communications, Output; Pa-Buss, Monitor Output Block Diagram - Tech Works CI-HSI-41 System Planning & Installation Manual

PA-BUSS, Monitor/Communications, Output, has many uses:
ALWAYS
CI-BUSS ALERT
TALK SW
ALC (HEADSETS)
MASTER INPUT
SLAVE INPUT
It could be:
A logging output, for recording the conversation, or just selected individuals.
A "paging" output to talk to people observing a procedure.
Used for Patient Communications, to talk to the patient that is undergoing a procedure
such as an MRI.
There could be Background Music, which is only interrupted when communications or Paging
takes place. For the various applications see the PA-BUSS Section of the main Systems
Planning guide.
The PA-BUSS Monitor has several Audio Selection Choices, which are summed:
Master Connector:
Slave Connector:
Headsets:
Each of these selections determines what is sent out of the PA-BUSS Output connector. This
could determine what comes out of a speaker, or what is heard by another device connected to
the PA-BUSS.
The Audio May be Keyed (See below) or may always be enabled KEYED ALWAYS
The PA-BUSS Monitor ALERT Signal (Keying Signal) is selectable, logical OR'ed
Talk Switch Active
CI-BUSS is ALERTed
Always (Overrides other selections)
The Alert signal determines when other devices connected to the PA-BUSS Output reat to
commands from the PA Output. This would include muting of Music or turning on Paging.
The PA-BUSS is always powered, 23 Volts, at a Maximum of 300 Milliamps
This power is made available to run modules connected to the PA-BUSS.
For more details on the PA-BUSS please see the PA-BUSS Section of the main Systems
Planning guide.
6/29/2017 Tech Works CI-HSI-41 Systems Planning & Installation Manual
OR
ALWAYS
SUM
SELECT
"LISTEN
MUX
LEVEL"
ON OFF
ON OFF
ON OFF
AMP
TALK_SW
CI-BUSS_ALERT
ALWAYS
ALERT
PA-BUSS
OUTPUT
AUDIO
ON OFF
ON OFF
ON OFF
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