CIAS Elettronica S.r.l.
Ed. 1.3
Installation Manual
Page
61
of
78
PYTHAGORAS 3
3. Set one of the 16 modulation channels available by rotating the hexadecimal switch
“SW3”
to a position between 0 and F.
The use of one channel rather than another will not modify the barrier performance, but it is
good practice to set different channels for the different barriers on a system to avoid the
possibility of sabotage or deliberate interference.
Setting the switch to channel F will not generate an alarm event when detecting a channel
alarm.
N.B.
when there is a possibility that two barriers are affected by reciprocal interference
because, for system reasons, the signal from one microwave can be intercepted by
the other, it is necessary to synchronise the transmitter units, making one unit (the
MASTER) provide a synchronisation signal to the other (SLAVE). In this mode the
modulation frequency is not dependent on the position of the switch, but only on the
synchronising signal.
4. To adjust the horizontal and vertical alignment release lightly the screws on the bracket and
when complete tighten them back.
5.
Ensure that the tilt switch bulb “Amp 1” is in a position that keeps the contact closed
(perpendicular to the ground).
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