Wi Lan Inc EB02 Benutzerhandbuch

Glossary

158

  AWE 120-58   Installation & Configuration Guide

The central control unit of the wireless network. A base station polls remote units and 
controls how traffic is routed to remotes. The base usually connects to a major access 
point of main wired network.

The beamwidth of an antenna describes how a signal spreads out from the antenna as 
well as the range of the reception area. Beamwidth is measured between the points on 
the beam pattern at which the power density is half of the maximum power. This is often 
referred to as the -3 dB points. A high gain antenna has a very narrow beamwidth and 
may be more difficult to align.

Bit Error Rate. A percentage of bits per million, showing the number of bits in error 
compared to the data bits actually sent.

Blocking is an operating mode where the radio receives only. Unblocked is the normal 
operating mode.

The signal loss experienced as it passes through the coax cable. Expressed in dB.

The part of the spectrum band occupied by a radio signal, usually measured in 
kilohertz (kHz).

A system where remotes cannot communicate directly with each other. They can only 
communicate with each other via a base station.

A type of wire where the inner conductor is surrounded by an outer conductor. The 
outer conductor serves as an electrical shield.

Refers to placing base stations or units in the same location. In this situation, base 
stations or units can interfer with each other unless steps are taken to isolate the 
systems from one another (such as aligning antennas or using different channels).

The situation that exists when two users try to send a signal over the same medium at 
the same time and the signal uses the same frequencies.

Menus that allow the viewing and setting of unit parameters.