Simplified Block Diagram - Tech Works CI-HSI-41 System Planning & Installation Manual

Functional Block Diagram (Simplified):
TALK SW
ALWAYS
MICROPHONE 1
PRE-AMP
M ,
ICROPHONES ARE EXTERNAL
S
HOWN HERE FOR CLARITY
MICROPHONE 2
PRE-AMP
MICROPHONE 3
PRE-AMP
MICROPHONE 4
PRE-AMP
1
2,3,4
TALK SW
ALWAYS
ALWAYS
CI-BUSS ALERT
TALK SW
ALC (HEADSETS)
MASTER INPUT
SLAVE INPUT
Simplified Block Diagram to illustrate the Configuration Jumper Options
Major Component not shown:
Transformers, Opto-Couplers, Audio Buffers
6/29/2017 Tech Works CI-HSI-41 Systems Planning & Installation Manual
1
FOUR
HEADSETS
2
3
4
M
G
AIN
SUM
ALC
OR
ALWAYS
SUM
SELECT
"LISTEN
MUX
LEVEL"
MASTER INPUT MA
SLAVE INPUT SL
MASTER INPUT
SLAVE INPUT
SUM
2,3,4
MA
SL SUM
1,3,4
MA
SL SUM
1,2,4
MA
SL SUM
1,2,3
IC
AMP
MASTER INPUT
ALC (HEADSETS) SUM
PA-BUSS INPUT
SLAVE INPUT
ALC (HEADSETS) SUM
PA-BUSS INPUT
EARPHONE 1
E ,
ARPHONES ARE EXTERNAL
S
HOWN HERE FOR CLARITY
EARPHONE 2
EARPHONE 3
EARPHONE 4
ALC (HEADSETS)
ALERT
PA-BUSS
OUTPUT
AUDIO
"SLAVE" AUDIO OUTPUT
CI-BUSS
"MASTER" AUDIO OUTPUT
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