Installation Manual

© CIAS Elettronica S.r.l. Ed. 2.0
Installation Manual Page 42 of 49 MICRORAY
c) Turn the function switch SW1 to position 1. This operation activates the barrier installation
phase.
d) Press the S3 button. This operation will activate the system of rapid adjustment of the
received signal. After a few seconds, the rapid signal adjustment system stops, and the
Buzzer BZ1 will emit an intermittent sound (1 Hz), indicating that the signal has reached
the correct working level.
e) Loosen the fixing screw located on the upper side of the joint, adjust the horizontal
orientation of the receiving antenna (Rx), so as to search for the maximum signal value.
f) If during orientation, the intermittent sound frequency increases, it means that the received
signal has increased compared to the previous situation.
Press the S3 button and when the intermittent sound frequency returns to the 1 Hz
frequency (due to the signal recovery), proceed with the next antenna orientation
operations.
If during the orientation, instead of increasing, the frequency of the intermittent sound
decreases, it means that the signal received after the antenna movement has decreased,
and it is therefore necessary to rotate the head in the opposite direction and search for a
possible new maximum value, indicated by the increase of the frequency of intermittent
sound. If no other better positions are found, it means that the current orientation provides
the maximum signal.
g) Loosen the fixing screw located on the upper side of the transmitting antenna joint (Tx), to
orient it in the horizontal plane and repeat the pointing operations.
Instead of using the button S3 (Rx side), for the operation of acquiring the new signal level
received, it is possible to temporarily obscure the MW beam (for example by passing a
hand in front of the Tx head). Thanks to this feature, it is possible to command the
acquisition of the new signal without going to the receiver and press the S3 button.
h) Once the best pointing has been achieved (therefore the maximum signal available), block
the horizontal movement on both the Rx and the Tx.
i) Unlock the vertical movement of the receiving antenna (Rx) by loosening the side screw
and orienting it upwards. Slowly rotate downwards searching for the maximum signal
repeating the pointing operations.
j) Unlock the vertical movement of the transmitting antenna (Tx) by loosening the side screw
and orienting it upwards. Slowly rotate downwards searching for the maximum signal
repeating the pointing operations.
k) After obtaining the best pointing, block the vertical movement both on the Receiver and on
the Transmitter.
l) Slowly raising and/or lowering the ray, search the maximum signal as described in the
previous steps (*)
m) Bring the function switch SW1 to position 2, making sure that there are no obstacles
during this operation.
In this phase, the barrier acquires both the value of the modulation channel and the present
field value, an alteration of the field at this time would therefore lead to an incorrect
acquisition.
The acquisition of these parameters by the receiver takes place a few seconds after the
button S3 has been pressed.
The simultaneous switching on of the 2 red LEDs D8 and D9 indicates that the acquisition
of the channel, of the signal value and the measurement of the quality of the alignment
have started, after a few seconds if the channel and the signal value have been acquired
correctly, the 2 leds turn off and the buzzer is activated emitting a number of sounds
(BEEP) inversely proportional to the quality of the alignment according to the following
table: