Cisco Cisco Aironet 1310 Access Point Bridge Guía De Instalación

In outdoor antenna installations, your antenna and bridge system can be damaged by surges that develop 
on the antenna and cable from close lightning strikes. You can use a lightning arrestor (such as 
AIR-ACC-3354) to help protect your bridge system from static electricity and lightning-induced surges; 
however, an arrestor will not prevent damage from a direct lightning hit.

A lightning arrestor is a 50-ohm transmission line with a gas discharge tube positioned between the 
center conductor and ground. This gas discharge tube changes from an open circuit to a short circuit 
almost instantly (100 nanoseconds) in the presence of voltage and energy surges, providing a path to 
ground for the energy surge.

A lightning arrestor should be installed between your outdoor antenna and the bridge. You should 
connect a 6 AWG copper wire from the arrestor to a good earth ground. 

This section describes how to mount the bridge and position the antenna and contains the following 
topics:

Personnel installing the bridge must understand wireless bridging techniques, antenna alignment and 
adjustment, and grounding methods. 

To meet regulatory restrictions, the external antenna bridge unit and the external antenna must be 
professionally installed. The network administration or other IT professional responsible for installing and 
configuring the unit is a suitable professional installer. Following installation, access to the unit should be 
password protected by the network administrator to maintain regulatory compliance.

These procedures focus on general mounting and cable-routing topics. For information about assembling 
the mounting hardware, see the 

.