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MWA60R/T
5.0 DESCRIPTION OF OPERATION
Both units (Transmitter: TX and Receiver: RX) shall be positioned facing each other at the two extreme points of the
length to be protected.
In any case, you shall consider that both the nature of the underlying ground and
particular weather conditions may vary the actual range.
5.1 Operation
The Transmitter generates a modulated
microwave signal in the 'X' band (10,525
GHz), which is intercepted by the
Receiver and compared, with regard to
the amplitude, with the programmed
alarm threshold.
When an intruder walks across the
microwave field, the signal intensity falls
below the set minimum level. Then the
receiver will notify the alarm state, by
causing a red LED indicator to come on
and opening the alarm relay contact.
If the Transmitter signal is not received
during more than 30 seconds, the alarm
relay rest condition may be resumed and
the negative will not be provided to
terminal 'D' (Disqualification) until the
signal is restored. For this reason,
it is
recommended that the connection
described in the “Disqualification”
chapter shall be made.
The figures illustrate the natural blind area in close proximity to both units. The blind area will, in case of a typical
installation set at 1.0-1.2 meters off the ground, extend over about 3 meters.
The
“sensitive area” illustrated in the figures shall
be taken into account, since a target (in any case,
a large one) crossing over this area may cause
the same disturbances as the ones caused by a
small target passing across the alarm
NOTE: The charts relative to the lobes illustrated in the figures are provided purely as an indication and
should be used as a guidance for installation purposes. They do not represent the real antenna radiation
charts since they might be subjected to changes due to the ambient context.
Summary of Contents for MWA60R/T
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