CIAS Elettronica S.r.l.
Ed. 1.3
Installation Manual
Page
64
of
78
PYTHAGORAS 3
It is possible to set values from 0 to F. The higher the value set the greater the sensitivity. If
lower sensitivity is required set a lower value. If higher sensitivity is required set a higher
value.
NB.
Setting the value
“0” for the masking is the equivalent in practice of disabling the
function. An excessive increase in the sensitivity can lead to an increase in the number of
unwanted alarms from the MW barrier, while a significant decrease in the sensitivity can
lead to a reduction in the capabilities of the barrier to detect genuine intrusions.
Walk-Test:
The barrier operates with the parameters already set up and each variation in
the microwave signal (sensitive area) generates an activation of the buzzer located on the
receiver board. The sound from the buzzer is intermittent and the frequency of the
intermittence depends on the intensity of the disturbance: if the frequency rises, it is
indicating that the disturbance is increasing (therefore indicating that there is a major
penetration of the detection field). If the disturbance is large enough to cause an alarm
condition the buzzer will sound continuously. In this mode it is possible to evaluate the
actual size of the sensitive area and to find any sources of potential interference (for
example loose fences) affecting the protection.
4
Position function switch
SW1 on position 4
and it is possible to read and/or modify the
sensitivity and make a
Walk-Test
on the
Doppler sensor in the RX column.
Reading
the sensitivity value of the
RX column Doppler sensor
:
Rotate SW5 (SENS) until the second green led (D5) is on.
The value read on this switch represents the actual value in use by the sensor.
The
default
value for
Doppler sensitivity
is
“
7
”
Modification
of the actual sensitivity of the RX Doppler sensor:
Rotate SW5 (SENS) to the desired value.
Push S1 to memorise the new parameter. Led D5 will come on)
It is possible to set values from 0 to F. The higher the value set the greater the sensitivity. If
lower sensitivity is required set a lower value. If higher sensitivity is required set a higher
value.
.
Walk-Test:
The sensor operates with the parameters already set up using SW5 and each
variation in the sensitive area generates an activation of the buzzer located on the receiver
board. The sound from the buzzer is intermittent and the frequency of the intermittence
depends on the persistence of the disturbance: if the frequency rises, it is indicating that the
disturbance is in the field for a longer period (therefore indicating that there is a major
penetration of the detection field). If the disturbance is long enough to cause an alarm
condition the buzzer will sound continuously.
5
Position the function switch
SW1 on position 5
and it is possible to read and/or modify the
sensitivity and make a
Walk-Test
on the
Doppler sensor in the TX column
The operation and parameter settings are as described in point 4.
Summary of Contents for PYTHAGORAS3
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