CIAS Elettronica S.r.l.
Ed. 1.3
Installation Manual
Page
57
of
78
PYTHAGORAS 3
10.3.2
Synchronisation Connections
To synchronise two transmitters it is necessary to make connection between terminals 8
“SYNC”
and terminals 7
“GND”
on terminal blocks
MS2
of the two transmitters.
It is also necessa
ry to select one transmitter as the “Master” and the other as the “Slave” using
the jumper
Jp1
.
With Jp1 in position
“IN”
the terminal 8 of MS2 is the
Input
terminal for an external
synchronisation signal making the transmitter a
“Slave”.
With Jp1 in position
“OUT”
the terminal 8 of MS2 is the
Output
terminal for a
synchronisation signal making the transmitter a
“Master
”.
N.B.
the interconnection cable between the two transmitters must be as short as possible
(<10m) and must be shielded with the shield connected to ground. For lengths longer
than 10m it is necessary to use a synchronisation repeater circuit (mod. SYNC 01).
10.3.3
Test Connections
The Test Function is activated by connecting terminal
6 “TEST”
of terminal block MS2 on the
transmitter circuit to GND. If the test function is activated after about 10 seconds the alarm relay
on the receiver will be activated.
N.B.
for high risk protection a Periodic Test of the equipment is necessary. In this way the
control panel will be able to detect bypass attempts of the sensors.
10.3.4
Stand by Connections
The Stand by Function is not active, and the terminal
5
”STAND BY”
of terminal block MS2 on
the transmitter
must be connected to GND
, if the transmitter interface circuit is not present.
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