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DESCRIPTION
MINIEXPLORER
is a microwave barrier for outdoor mounting with a maximum range of
30 meters.
It si mounted inside weatherproof ABS casings.
It can be fixed to the wall (using the mounting bracket) or on the ground (using the
mounting post).
The barrier is equipped with an electronic board able to distinguish atmospheric
disturbances or the rapid passage of a bird from an attempt at intrusion.
It offers complete immunity against fog.
INSTALLATION
The surface which the barrier is to be installed on must be as even as possible. The best
results have been obtained on concrete, asphalt, a solid ground or any other
homogeneous surface. Good results are obtained on lawn on condition that it is regularly
mowed and never exceeds 10cm.
ATTENTION
Trees and bushes moved by the wind can release false alarms.
PERIMETER PROTECTION - 4 SIDES
Every side of the perimeter must be protected by a receiver (RX) and a transmitter (TX).
For a square perimeter (fig. 1), the barriers must be installed in a way that there are two
transmitters (TX) or two receivers (RX) in every corner.
This is to avoid interferences between different devices.
PERIMETER PROTECTION - 3 SIDES
For installations on triangle perimeters using three couples of MINIEXPLORER,
inevitable in one corner a receiver (RX) and a transmitter (TX) are to be installed next to
eachother (fig. 2).
In this case, the following precautions have to be taken:
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RX1 must be installed at least 6m behind the point of intersection of the beams
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TX3 must be installed 4m behind the point of intersection of the beams
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The angle formed by RX1 and TX3 must not be larger than 60°.
MOUNTING
To guarantee that the two beams crossed offer total coverage, the point of intersection
and the axe of the posts must be exactly on top of eachother (fig.3).
The two detectors must be mounted at minimum 2m distance and 50 to 70cm from the
ground.
ATTENTION
The installation at more than 70cm height could compromise correct functioning.
PROTECTION OF DISTANCES SUPERIOR TO THE RANGE
If the side to be protected is longer than the range of the barrier (30m), it is necessary to
put several barriers next to eachother as shown in figure 5.
The distance between the barriers must not be larger than 50cm to avoid an intruder to
be able to pass by the corridors (marked with
A
in figure 5) without being detected.
The distance between RX1 and TX2 or RX2 and TX3 must be approximately 4 meters.
ALIGNMENT
Alignment with digital voltmeter (true RMS)
After installing the barriers according to the instructions, they have to be aligned:
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Exclude the automatic gain control by turning the dip-switch 3 of the receiver ON
(fig. 7).
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Verify that the channel selectors of the transmitter and receiver (SW1 dip 1-2 in
figure 6 and SW1 dip 1 in figure 7) are set to the same frequency (F1 or F2).
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Verify that the green LED DL2 (F1/F2 OK - channel LED) are lit and indicate that the
receiver has captured the signal of the transmitter.
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Use a digital voltmeter (true RMS) in AC to measure the voltage on the test points
P1 (test) and P2 (earth). Search the maximum value (approx. 1,8V..1,9V).
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Activate the automatic gain control by turning the dip-switch 3 of the receiver OFF
(fig. 7).
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Verify that the voltmeter measures a voltage of at least 850...900mVrms. If voltage is
inferior, the yellow alignment LED DL3 is lit. In this case, the barrier has not been
aligned or there are too many obstacles between the transmitter and the receiver.
Find a better position or for the transmitter or the receiver.
ENGLISH
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If voltage is correct (850..900mVrms or superior) alignment has been completed
correctly. The yellow alignment LED DL3 is switched off.
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Tighten the bolts on the transmitter and receiver.
Alignment with oscilloscope
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Connect the probe of the oscilloscope to the test points (fig. 7) P1 (test) and P2 (earth).
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Program the time base of the instrument according to the channel selected.
» Channel F1 = 50ms/division
» Channel F2 = 20ms/division
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Turning the selector V/Div to 1VAC, a modulated voltage with the following period is
viewed:
» Channel F1 = 180ms
» Channel F2 = 127ms
The minimum amplitude necessary for functioning of the microwave is 2.5Vpp. The signal is
saturated at approx. 4Vpp. The aim of alignment is to obtain the greatest possible amplitude.
The curbe of the signal must be clear and without overmodulations. In this case, look for the
reason of the interferences (e.g. interference with other microwaves, radio towers, large
underground water pipes, high-tension lines etc.). If the interferences are caused by radio
frequencies, it is recommended to mount the barrier at approx. 50cm from the ground.
Alignment with TECNOTESTER
Procede as follows:
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Turn the switch of the TECNOTESTER OFF
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Exclude the automatic gain control by turning the dip-switch 3 of the receiver ON (fig. 7).
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Connect the TECNOTESTER to the test connector (fig. 7) by the cable included paying
attention to the sense of introduction.
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Align the barriers trying ot obtain the best signal. The number of LED lit indicates the
quantity of signal received, where the indication
-1
stands for the minimum quantity.
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Enable the automatic gain control by turning the dip-switch 3 of the receiver OFF (fig. 7) and
the switch of the TECNOTESTER ON.
If the barrier detects an intrusion, the buzzer is activated. In this way, it is possible to control
the width of the protected zone.
ATTENTION
If there are no mouvements, the TECNOTESTER must signal values superior to -1.
FUNCTIONING TEST
The electronic board of MINIEXPLORER is equipped with a section that detects faults and
checks the correct functioning.
It contains two fault terminals which correspond to the contacts of a normally closed relay (open
= fault) and two alarm terminals which correspond to the contacts of a normally closed relay
(open = alarm).
FAULT OUTPUT
» Correct functioning
= contact closed
» Board defect
= contact open
ALARM OUTPUT
Stand-by
The receiver (fig. 7) is equipped with a stand-by terminal (positive or negative according ot
programming, dip 2 - ON = positive stand-by/OFF = negative stand-by).
To enable the stand-by, connect the stand-by terminal of the barrier to the corresponding
terminal of the control panel.
If the control panel is in stand-by, on the stand-by terminal there is negative or positive voltage
(depending on the control panel). In stand-by, the alarm output of the barrier is always closed.
Control panel armed
If the control panel is armed, the alarm output works according to the following logic:
» Detector in stand-by
= contact closed
» Detector in alarm
= contact open
POWER SUPPLY (13.8V DC)
For power supply of the barrier use a 13.8V DC power supply unit. To guarantee power supply in
case of power failure (AC), connect a battery with adequate capacity inside the power supply
casing.
For example, for 4 couples of barriers, use a 13.8V/3A power supply unit and a battery of at
least 12V/17Ah.
