ZyXEL Access Point G1000 v2 91-005-124001B ユーザーズマニュアル

ZyXEL G-1000 v2 User’s Guide

188

There are two types of antennas used for wireless LAN applications.

• Omni-directional antennas send the RF signal out in all directions on a horizontal plane. 

The coverage area is torus-shaped (like a donut) which makes these antennas ideal for a 
room environment. With a wide coverage area, it is possible to make circular overlapping 
coverage areas with multiple access points. 

• Directional antennas concentrate the RF signal in a beam, like a flashlight. The angle of 

the beam width determines the direction of the coverage pattern; typically ranges from 20 
degrees (less directional) to 90 degrees (very directional). The directional antennas are 
ideal for hallways and outdoor point-to-point applications.

In general, antennas should be mounted as high as practically possible and free of 
obstructions. In point-to –point application, position both transmitting and receiving antenna 
at the same height and in a direct line of sight to each other to attend the best performance. 

For omni-directional antennas mounted on a table, desk, and so on, point the antenna up. For 
omni-directional antennas mounted on a wall or ceiling, point the antenna down. For a single 
AP application, place omni-directional antennas as close to the center of the coverage area as 
possible.

For directional antennas, point the antenna in the direction of the desired coverage area.

The G-1000 v2 is equipped with a reverse polarity SMA jack, so it will work with any 2.4GHz 
wireless antenna with a reverse polarity SMA plug.