cias PYTHAGORAS2 Series, Installation Manual, Page: 56 / 76

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CIAS Elettronica S.r.l. Ed. 1.1
Installation Manual Page 55 of 70 PYTHAGORAS 2
4 MICROWAVE ALIGNMENT AND CONFIGURATION
4.1 Alignment and Configuration
The PYTHAGORAS2 barriers have an electronic alignment system, a system for parameter
adjustment and a test system which greatly simplify both the installation and routine
maintenance without the need for special tools.
4.1.2 Operations at the TRANSMITTER
Open the column following the procedure described on the paragraph 2.1. Removing the top
cover and opening the radome (front cover)
will activate the “Tamper” switch connected to
CONNECTOR J4 .
1. Connect the DC (13,8
V )
power supply cables to terminals 1 and 2 of MS5 of the
Transmitter interface circuit.
2. 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.
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.
3. To adjust the horizontal and vertical alignment release lightly the screws on the bracket and
when complete tighten them back.
4.
Ensure that the tilt switch bulb “Amp 1” is in a position that keeps the contact closed
(perpendicular to the ground).