Clear-Com AB-120 - Manual (Page 22)

Clear-Com Communication Systems
AB-120 Announcer Console Instruction Manual
2 - 2
AB-120 SYSTEM BLOCK DIAGRAM
Figure 2-9: AB-120 Console Block Diagram
BAL/UNBAL
SELECT
1/2 6-PIN HEADSET CONNECTOR
ELECTRET
POWER
PREAMP GAIN SELECT
LIMITER
LOGIC
MUTE
INTERCOM 1
MUTE TALLY
COUGH BUTTON TALKBACK TALLY
TALKBACK
LINE LEVEL GAIN SELECT
CC/RTS GAIN
SIDETONE ADJUST
A/B CHANNEL
SELECT
(REAR PANEL)
OPTIONAL
30 DB PAD
LINE LEVEL OUT INTERCOM
CLEAR-COM/RTS
LOOPS THRU
POWER STRIPPER
30 VOLT POWER SUPPLY
CONSOLE POWER
1/2 6-PIN HEADSET CONNECTOR HEADPHONE
OUTPUT
HEADSET
AMPS
LEFT VOLUME RIGHT VOLUME
LEFT EAR
RIGHT EAR
DIP
SWITCH SELECT
-INTERCOM A -SPARE -IFB 2 -IFB -SPARE -SPARE -INTERCOM A -SPARE -IFB 2 -IFB -SPARE -SPARE
100-240 VAC
30 VDC
IFB INPUT