©
CIAS Elettronica S.r.l.
Ed. 2.4
4.1.2 Operations at the Receiver
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 MS5 of the
interface circuit.
2 To optimise the alignment of the barrier and to set the operating parameters without the use
of an instrument, using the integrated electronic system, after a preliminary optical
alignment, proceed as follows:
a. Ensure that the micro switch that monitors the opening of the cover, connected to
CONNECTOR J4, is open.
b. Rotate Function
SW1 to Position
1
. This activates the installation phase of the barrier.
c. Press push button
S1
. This activates the fast signal acquisition system and also activates
the buzzer, with an intermittent sound, which in this phase indicates the level of signal
received.
d. Loosen the bracket fixing screws, used for horizontal alignment of the
receiver
head so that
the maximum signal can be found.
e. If during alignment there is an increase in the intermittent frequency of the buzzer this
means that there is an increase in the received signal with respect to the previous level. If
the increase in the received signal is significant the buzzer sound may be continuous. Press
push button S1 again and when the buzzer sound becomes intermittent again or with a
lower intermittent frequency (when the signal has recovered) reorientation the head again. If
during the alignment the intermittent frequency drops, instead of increasing, this means that
the received signal has reduced after the movement and the movement should be reversed
in the opposite direction to try and find a new maximum. If the frequency drops no matter
which direction the head is moved this means that the current position gives the maximum
signal.
f. Loosen the horizontal alignment screws on the
transmitter
head and repeat the operations
described in “e”.
NB: during alignment of the transmitter to activate the signal recovery, rather than press
push button S1, momentarily block the radio frequency emission (for example by placing a
hand in front of the transmitter antenna) so that a single person can easily align the
PYTHAGORAS barrier.
g. Obtain the best alignment (maximum signal) and lock the horizontal movement of the
transmitter and receiver.
h. Release the vertical movement of the receiver head and orientate it upwards. Press push
button S1 and wait until the intermittent buzzer has stabilised. Rotate the head slowly
downwards looking for the maximum signal as described in “e”.
Installation Manual
Page
45
of
56
PYTHAGORAS
