User Manual

SPEEDLAN 9000 Series Installation and Operation User Guide Version 3.03

Glossary-13

Multi-path fading

The condition in which the “true” signal from an antenna reflects off an object (usually the ground) and, as a

result, the reflected signal causes destructive interference at the receiving antenna. Multi-path fading affects

linearly polarized signals more than circularly polarized signals.

NAT

NAT helps to ensure network security and allows an entire company to share a single global IP address for

communication on the Internet. This enables companies to communicate with other devices on the Internet.

Network

A set of connections that allow them to exchange data with each other, which enables multiple users to share

to communicate data through the accepted path(s). Two or more locations tied together with equipment and

communications channels.

Node

This is a point on the network such as a computer, server, peripheral (printer, scanner, etc).

Noise

Any unwanted signal or disturbance that degrades the quality of a transmitted signal.

Obstruction

Any man-made or natural object that blocks, diffracts, or reflects a transmitted signal.

Octet

There are four octets in an IP address. Each octet contains 8 bits, which are equivalent to 1 byte. Each octet

is separated by a period (.).

Outside diameter of pipe for mounting an antenna.

Outdoor Unit

The Outdoor Unit (ODU) provides the baseband and RF signal processing required to convert the 100Base-

T signal from the CPI to an RF frequency at 23, 26, 29, or 38 GHz. The ODU mounts to an antenna through

an integral “Quick-Fit” connection that does not require any external waveguide. The ODU housing is

ruggedized to protect the RF and modem electronics contained inside. It is capable of simultaneously

transmitting and receiving 100 Mb/s of data traffic over the air.