©
CIAS Elettronica S.r.l.
Ed. 2.4
4 MICROWAVE ALIGNMENT AND CONFIGURATION
4.1 Alignment and Configuration
The PYTHAGORAS 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 instruments.
4.1.1 Operations at the TRANSMITTER
To remove the radome (front cover) unscrew the two screws on the upper cover. Opening the
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 MS1 of the
TRANSMITTER circuit.
2. Preset 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 alter the operation of the barrier but it is
good practice to preset different channels for the different barriers on a system to remove
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 loosen the securing screws on the bracket
and when complete tighten the bracket screws.
4. Ensure that the tilt switch bulb “Amp 1” is in a position that keeps the contact closed
(perpendicular to the ground).
Installation Manual
Page
44
of
56
PYTHAGORAS
