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28. BLOCK DIAGRAM
[VM-2120/-2240]
IT-450
(option)
SETTINGS
(Phantom Power)
SETTINGS
(INPUT 1 MIC/LINE)
SETTINGS
(INPUT 2 MIC/LINE)
SETTINGS
(INPUT 3 MIC/LINE)
HA
IT-450
(option)
HA
G
+
CPU
G
+
CPU
IT-450
(option)
HA
IT-450
(option)
HA
IT-450
(option)
OT
HA
MA
G
+
CPU
G
+
C
E
H
CPU
RS-485 CPU
CPU
CPU
Audio
CTRL IN 1
CTRL IN 2
CTRL IN 3
TEL PAGING
INPUT 3
(MIC/LINE)
BGM 1
(LINE)
BGM 2
(LINE)
INPUT 2
(MIC/LINE)
INPUT 1
(MIC/LINE)
Ctrl In
LINK
Remote mic
Slave amp
(
(
Chime
Tone
CF card
sound source
1 kHz
Detector
SETTINGS
(Chime Tone Select)
EV-200 (option)
Auto fader
Mute level
BASS TREBLE
BGM vol
Tone
BASS TREBLE
INPUT 1 vol
Tone
BASS TREBLE
INPUT 2 vol
Tone
BASS TREBLE
INPUT 3 vol
MA
REC
OUT
PRE
OUT
POWER AMP
IN
LINE
OUT
MASTER vol
MASTER bypass
CPU
PA
Level meter
–30
–24 –17 –7 0 dB
ZONE 1
Zone select
Zone vol
(ATT)
ATT bypass
Zone
On/Off
ZONE 2
ZONE 3
ZONE 4
ZONE 5
CPU
CPU
N1
ATTENUATOR
CONTROL
EXTERNAL SP
INPUT
DIRECT OUT
ZONE 1
ZONE 2
ZONE 3
Ground Fault
Detector
Impedance
Detector
Amp Fault
Detector
Watchdog
Timer
AC/DC
Fault Detector
ZONE 4
ZONE 5
N2
C
C
H
C
H
C
H
C
H
C
H
C
H
H
SV-200M (option)
CT-200M (option)
SURVEILLANCE
I/O
(D-sub 25P)
CPU
CPU
EEPROM
SW 2
SETTINGS
(Master/Slave)
SW 3
POWER
EMERGENCY
FAULT
AC MAINS
115 or 230 V AC
6.3 A/115 V
T3.15 A/230 V
DC POWER IN
24 V DC
PT
Power
CONTROL I/O
( D-sub 25P)
24 V DC OUT
TEL PAGING vol
RM vol
CHIME vol