Soutwest Microwave MicroWave 330, Руководство по установке

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DO DONT
Figure 11 – Clear Area
4.1.2 Terrain
Since the operation of Link requires transmission of energy from Transmitter to Receiver, it is important to
maintain a clear line of sight between the units. Therefore, the ground must be flat across the protected area.
Any bumps, hills or ditches in the area will shadow the beam and may provide crawl space for an intruder.
Bumps or hills must be leveled, and ditches filled so that the area is flat to within six (6) inches (15cm) as shown
in Figure 12.
DO DONT
Figure 12 – Terrain
The protected area can be any stable, reasonably smooth material such as concrete, asphalt, tilled earth or gravel.
If there is grass or vegetation in the protected area it must be kept cut to a maximum of three (3) inches (8cm) in
height.
Snow accumulation should not exceed three (3) inches (8cm) in height.
MicroWave 330 should
not be operated over open water.
4.1.2.1 Terrain in High Security Applications
For maximum-security applications where detection of prone “commando style” crawl is required, the terrain
flatness should be no more than plus three inches or minus three inches deviation from a plane drawn between
the transmitter and receiver. The zone length (Transmitter to Receiver) should not exceed 400 feet (122m).