SENSTAR MPS-4100, Руководство по эксплуатации продукта

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Installation planning
MPS-4100 product guide • • • 2 - 3
Microwave signal considerations
Microwave signals can pass through common construction materials such as glass,
plaster and drywall. Microwave signals will reflect off of solid objects and metallic
surfaces.
Microwave signals will pass through standard chain link fences if the beam axis is
at a right angle to the fence. The more the fence deviates from a right angle to the
beam, the less signal penetration, and the more reflection.
Microwave signals that detect a moving or flexing fence, or other large metallic
objects, can generate nuisance alarms. A large metallic object can cause a small
amount of motion to appear as a large moving target.
Other potential nuisance alarm sources include moving machinery parts, as well
as the vibrations caused by machinery, large vehicles such as trucks, buses and
aircraft.
Physical protection
Install the Transmitter and Receiver in a location, which provides protection from
both accidental damage and tampering. If microwave units are being installed
near roadways, or where they are vulnerable to vehicle traffic, install protective
devices such as bumper posts or parking guards.
Optimum security
Choose a location that will provide optimum security, yet be free from nuisance
alarms. Always locate the MPS-4100 inside a fence or controlled access area to
prevent nuisance alarms due to random foot traffic, vehicles, or animals.
Units should be located away from parallel fences to avoid reflection of the
microwave signal off the surface of the fence, and to prevent the possibility of
jumping over the protection pattern. As a general rule, the clear area around a
microwave system should be at least two times the maximum beam width.
For maximum security it is necessary to overlap the ends of links so that the dead
spot below and immediately in front of the adjoining link is protected. A 4.5 m
(15 ft.) overlap is required at corners and a 9 m (30 ft.) overlap at intermediate
Figure 2-2 Level terrain
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DON'T