cias MANTA - Page 36

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CIAS Elettronica S.r.l. Ed. 1.5
Installation Handbook Page 35 of 57 MANTA 50 – 80
2.6 Length of the Dead Zones near the equipment
The length of the Dead Zones near the equipment is based on the distance of the equipment
from ground, on the sensitivity set on the receiver and on the type of antenna used.
With regard to the considerations stated above, and based on site requirements, the equipment
must be installed at a certain height from ground. In a typical site the height should be 90 cm.
(from the ground and the centre of the antenna). With medium sensitivity setting, the
suggested crossing overlap is 3.5 m .
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Antenna
centre height
from ground [cm]
Dead Zone
lenght [m]
Maximum
sensitivity
Minimum
sensitivity
Figure 5 MANTA/50-80: Dead zone length near the equipment versus installation height.
5 M
8
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8
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m
Figure 6 MANTA/50-80: Dead zone length near the equipment versus installation height.
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Figure 7 - Overlapping of two beams in a cross