Option 1 : Using PT1800 with its chime output
Connection Diagram
2C screen mic cable
( Unbalanced audio )
Page 4
Amperes PT1800
PT1800
1/4” phone jack
MX2222 Pre-Amplifier Mixer
2C cable
ZS Zone Selector
The connection diagram above utilises the built in chime of PT1800 to feed to mixer chime input. The timer is
set to trigger a dry contact for one channel and is then connected to Zone Selector Relay Trigger port.
The relay port is also connected to EP1200 Mic Switch relay port for emergency overriding of Volume
Controllers.
When the preset time at PT1800 is reached, it will provide a dry contact for channel 1, This will provide an
chime output to the mixer. In the mean time, it shall also trigger all zones at the zone selector. The chime shall
be broadcasted to all zones with volume controller bypassed.
To Volume Controls
E/M Overriding
To power amplifiers
E
P
1
2
0
0
MIN
MAX
MAX
MIN
Another Quality Product From
S/N :
INPUT LEVEL
SIREN
MESSAGE
MESSAGE
SIREN
MESSAGE IN
PRE IN
PRE OUT
REMOTE TRIGGER
P
T
1
8
0
0
DC 24V
+
OUTPUT
LEVEL
N
O
C
O
M
N
O
C
O
M
N
O
C
O
M
N
O
C
O
M
CH1
CH2
CH3
CH4
N
O
C
O
M
N
O
C
O
M
N
O
C
O
M
N
O
C
O
M
CH5
CH6
CH7
CH8
RELAY DRY CONTACT
LINE OUT
UNBALANCE
CONT
TRIG
RELAY
RELAY
EXT IN
OUTPUT
DC INPUT
24V DC
MIXER
CHIME
REC
BGM
AC 50 / 60HZ
LINE OUT
M
X2
1
2
2
MAINS : 230V +/-10%
1/4” phone jack
2C screen mic cable
( Unbalanced audio )
EP1200 Emergency Paging Panel
O p t i o n a l
connection
to override
all zones
