I C S - 2 1 / 2 1 D T S P E A K E R S T A T I O N
4 - 3
TECHNICAL REFERENCE
Figure 5: ICS-21/21DT Block Diagram
EQ/
LIM
Ta
lk
Min
Vo
l
Call
W
aiting
Light
Ans
w
er
Bac
k
Intercom
Vo
lume
Speak
er
Call Send &
Receiv
e
Microprocessor
Ta
lk
Balanced
Prog
ra
m
Input
Speak
er
Mute
Prog
ra
m
Mute
Mic Mute
Oper
ating
Mode
Options
Mic Gain
Prog
ra
m
Le
ve
l
P
anel Mic
Matr
ix
Connector
Rectifier
16 V
A
C
Po
w
er
Matr
ix
Interf
ace
Microprocessor
Summary of Contents for ICS-21
Page 1: ...SPEAKER STATION I N S T R U C T I O N M A N U A L ICS 21 21DT...
Page 4: ...I C S 2 1 2 1 D T S P E A K E R S T A T I O N...
Page 13: ...I C S 2 1 2 1 D T S P E A K E R S T A T I O N 1 9...
Page 15: ...I C S 2 1 2 1 D T S P E A K E R S T A T I O N...
Page 16: ...I C S 2 1 2 1 D T S P E A K E R S T A T I O N...
Page 18: ...I C S 2 1 2 1 D T S P E A K E R S T A T I O N...
Page 22: ...I C S 2 1 2 1 D T S P E A K E R S T A T I O N 4 4 Figure 6 Main PCB Component Layout...