Clear-Com ICS-2003 - Manual (Page 49)

Clear-Com Communication Systems
ICS-2003 Intercom Panel Instruction Manual
3 - 9
Figure 3-11: Analog Block diagram—ICS-2003 Main PCB
EQ
EQ EQ
DTMF Generator
AUX. AUDIO
OPTION
HOT
MIC
OUTPUT SA OUTPUT
SPEAKER FEED OUT
ANNOUNCE T
ONE
FROM MICROPROCESSOR
RS-422 COM MODULE
4-WIRE T ALK 4-WIRE LISTEN
BALLANCED PROGRAM INPUT
HEADPHONE #1 HEADPHONE #2
SPEAKER
P
ANEL
MICROPHONE HEADSET MICROPHONE
MIC GAIN TRIMS & SWITCHES
LIMITER
MICROPROCESSOR CONTROLLED VCA VOLUME CONTROLS & MUTE SWITCH
MICROPROCESSOR CONTROLLED AUDIO SWITCH
ICS-2003
AUDIO BLOCK DIAGRAM
Jan. 14, 1998
Intercom Intercom Intercom Program Program Program Sidetone Sidetone
Sidetone
Program
1 1 1 2 2 2 3 3
3 3
PROGRAM VOLUME INTERCOM VOLUME