©
CIAS Elettronica S.r.l.
Ed. 2.4
3.3.2 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 necessary to select one transmitter as the “Master” and the other as the “Slave” using
the link
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 screened with the screen connected to ground. For lengths longer
than 10m it is necessary to use a synchronisation repeater circuit (mod. SYNC 01).
3.3.3 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 activate.
N.B.
in high risk sites that the detectors are subjected to the Test procedure on a regular basis.
In this way the Alarm centre can identify attempts to bypass the sensors.
3.3.4 Stand by Connections
The Stand by Function is not active, and the terminal
6 ”STAND BY”
of terminal block MS2 on
the transmitter
must be connected to GND
.
Installation Manual
Page
41
of
56
PYTHAGORAS
