Spurious Radio Frequency Emissions; Lightning Protection; Rain Proofing - Black Box LW0050A Manual

PRO 11 SERIES WIRELESS ETHERNET
5.4.2 S R F E
PURIOUS ADIO REQUENCY MISSIONS
The regulations referred to in the previous section also specify maximum "out-of-
band" radio frequency emissions. Install a filter as close as possible to the Pro 11
unit's connector.
5.4.3 L P
IGHTNING ROTECTION
Lightning protection is designed to protect people, property, and equipment by
providing a path to ground for the lightning's energy. The lightning arrestor
diverts the strike energy to ground through a deliberate and controlled path
instead of allowing it to choose a random path. Lightning protection for a building
is more forgiving than protection of electronic devices. A building can withstand
up to 100,000 volts, but electronic equipment may be damaged by just a few volts.
Lightning protection entails connecting an antenna discharge unit (also called an
arrestor) to each cable as close as possible to the point where it enters the building.
It also entails proper grounding of the arrestors and of the antenna mast (if the
antenna is connected to one).
The lightning arrestor (LW014) should be installed and grounded at the point
where the cable enters the building. The arrestor is connected to the unit at one
end and to the antenna at the other end.
The professional installer you choose must be knowledgeable about lightning
protection. The installer must install the lightning protector in a way that
maximizes lightning protection.
5.4.4 R P
AIN ROOFING
12-, 18-, and 24-dBi antennas must be sealed against rain at the point where the
cable enters the pole before they are suitable for external use.
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