Nortel WLAN Security Switch 2361 Installationsanleitung PDF herunterladen (Seite 47)

WLAN Series 2332 Outdoor Solution with Indoor Mounted AP 47

Avaya WLAN 2332 Series Outdoor Solution Guide

Figure 3. Surge suppressor

Installation

For best results, install the surge suppressor in close proximity to a low-resistance ground at a point where the

coaxial cable enters the building. In most cases, one 8-foot rod driven into moist soil or multiple rods bonded

together will provide adequate grounding. (see National Electrical Code guidelines).

Install the surge suppressor in an accessible location that allows for periodic inspection and possible

replacement of the gas cartridge. Provide drip loops in the cables to prevent water from entering the building,

see (Figure 6 on page 49).

The life expectancy of the replaceable gas tube depends on the frequency and severity of electrostatic activity

at the site. Low-level conduction resulting from near-by storm activity has very little impact on the life of the

cartridge, but powerful surges induced by on-site strikes will eventually result in degraded performance or

failure. Degraded performance indicators include reduced receiver sensitivity, above normal VSWR readings,

and RF heating of the surge suppressor body during transmit mode. Should the discharge tube fail totally, it

becomes a permanently conductive protective shunt to ground. Periodic SWR checks provide a good indicator

of deteriorating performance, and routine replacement may be indicated following especially severe weather

events where multiple on-site strikes were known to have happened.

Warning! A properly rated surge suppressor is required for any

cable/antenna combination exiting the building. The required components must

be rated and approved for use in the intended application.

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Nortel WLAN Security Switch 2361 Installationsanleitung Seite 47