Tecnoalarm EXPLORER II Instructions For Use Manual page 6

3.3 ALIGNMENT BY TECNOTESTER
Proceed as follows:
+ Position the switch of the TECNOTESTER on "OFF".
+ Insert the jumper J2 (fig. 7) to exclude the automatic gain control.
+ Connect the TECNOTESTER cable to the jumper CN2. Keep an eye
on the correct sense!
+ Align the barrier so as to obtain the maximum signal. The number of
LEDs lit indicates the quantity of signals received. The indication "+1"
stands for the minimum of signals acceptable.
+ Once the alignment has been finished, remove the jumper J2 (fig. 7)
and position the switch of the TECNOTESTER on "ON". In case of
intrusion, a buzzer signal is activated.
V ATTENTION W
If there are no movements at all, TECNOTESTER must not indicate a
value inferior to +1.
4. NOISE LEVEL CONTROL
The oscilloscope measures the level of electrical noise on the receiver.
Proceed as follows:
+ Disconnect the transmitter opposite to the receiver tested from mains.
+ Put the oscilloscope probe on the test point TP3 (fig. 7).
+ Set the oscilloscope at 50mV/div.
+ Read the amplitude of the signal.
Best functionality is given with an amplitude lower than 300mVpp. In case
the noise level exceeds 500mVpp, the power supply (AC) has to be
disconnected and the electronic board has to be powered merely by
battery or power supply (13.8V DC).
Should the noise level return to its regular level, the problem lies with line
voltage (e.g. voltage filter). In this case check the relative device.
If, however, after disconnecting the power supply the noise level remains
superior to 500mVpp, call for technical assistance.
As soon as adjustment has been completed, connect the automatic gain
control by removing the jumper J2 (fig. 7).
After approximately 10 seconds the barrier is ready for integration and
sensivity adjustment.
6 Outdoor Microwave Barrier - EXPLORER II
5. INTEGRATION AND SENSIVITY ADJUSTMENT
The intervention of the detector can be set with the help of the trimmers PT3
(sensivity) and PT6 (integration). In the beginning set the trimmer PT3 at
minimum sensitivity (turn anticlockwise) and the trimmer PT6 at maximum
integration (anticlockwise).
Simulate an intrusion and verify that the alarm contact is activated even in the
most critical zones. Should the contact not be activated, increase sensivity
turning PT3 clockwise.
We recommend minimum integration of PT6 in order to avoid unwanted
alarms caused by incidental movements.
Functioning of the trimmers
PT3 = Sensivity
The trimmer PT3 is to be turned clockwise to increase the diameter of the
microwave field. Turn anticlockwise to reduce the diameter of the microwave
field. The lower is the sensitivity the more the system is protected against false
alarms.
PT6 = Integration
The trimmer PT6 is to be turned clockwise to get faster detection. Turn
anticlockwise to reduce integration. Small delay permits to detect very quick
intrusions. Longer delay allows to avoid false alarms generated by small
animals like birds (fig.10).
V ATTENTION W
Do not change the position of the trimmers varnished.
Fig. 10
EXPLORER II - Outdoor Microwave Barrier
7