User's Manual

Altai A3-Ei Dual-band 3x3 802.11ac Wi-Fi Access Point

Installation Guide

is very important that using shielded outdoor rated Ethernet cable

together with shielded RJ45 jack for outdoor deployment at the time.

The differentiation between unshielded twisted pair (UTP) Ethernet

cable and foiled twisted pair (FTP) cable is that the latter has a small

wire under the foil. This wire (preferably 2 cm longer than other wires),

also known as the drain wire, should be wrapped around the outside of

the shield when installing the shielded RJ45 plug. It is very important to

have direct contact between the foil and the shield of the RJ45

connector.

Figure 15 shows a shielded, metal-enclosed RJ45 connector. First the

boot is slid onto the cable, then the cable shield and drain wire are

folded back, next the load bar is loaded with the eight inner cable

conductors, then the load bar/cable assembly is inserted into the

connector housing and crimped. Finally, the boot is slid over the

assembly for additional strain relief.

Figure 15 - Shielded, metal-enclosed RJ45 connector

Here are some more tips to improve the effectiveness of your surge

protection scheme for fighting against lightning and power surges:

 Keep cable runs as straight as possible.

 Always run outdoor PoE cable inside of the mounting pole if

possible. The mounting pole will as insulation and help passing

surges to ground.

 Use PoE cable and RJ45 plug that is shielded and is rated for

outdoor or direct burial;

 Test the conductivity of the grounding system to ensure the

installation is solid and electrically capable of grounding any

ambient surge or static.