Description of working
The two units (transmitter: TX and receiver: RX) must be positioned facing each other at the two
ends of the distance to protect. Be aware that the nature of the ground underneath, or special
weather conditions might affect the real range.
Working
The transmitter emits a modulated microwave signal (10,525 GHz), which is received by the
receiver and whose amplitude is compared with the programmed alarm threshold.
When an intruder crosses the microwave area, it causes a signal-intensity decrease under a
minimum level fixed; the receiver shows the alarm condition, lighting up a red Led indicator and
opening the contat of the alarm relay.
If the signal of the transmitter is not received for over 30 seconds, the alarm relay could go back
to quiet condition and the negative to terminal D (disqualification) fails until signal restoring.
For this reason, in the hard-wired system, it is suggested to make the connection described
in
the
chapter
disqualification.
The drawings identify the
natural shadow areas in
the
immediate
E
sorroundings of the
two units, which extend
N
for about 3 meters, in a
typical installation at 1 - 1,2 m
G
Note: the diagrams of the patterns shown in the drawings are an indication and a guide
during installation. They do not represent the real radiation diagram of the antennas as
they may be subject to variations due to environmental context.
Sensitive zone
concerning
3 meters
sensitive
zone
alarme
zone
sensitive
zone
BM60HP
6,5 meters
BM60HP
BM120HP
BM200HP
height.
BM60HP :
BM120HP :
BM200HP :
The sensitive zone shown in the drawings is to
be taken into consideration, as a big target.
Overpassing this area might cause the
same perturbations as a small body
passing the alarm area, that's to say might
cause false alarms.
BM120HP
10 meters
Alarm zone
1,2 meters
3 meters
4 meters
- 38 -
3 meters
max 60 meters
max 120 meters
max 200 meters
BM200HP
16 meters
Sensitive zone