Table of Contents
Advertisement
The AP has connections for the wired network and power supply. The AP
attaches to a wall or ceiling depending on installation-site requirements.
1.1.1
New Features
•
•
•
•
•
1.2
Radio Basics
Spectrum24 devices use electromagnetic waves to transmit and receive
electric signals without wires. Users communicate with the network by
establishing radio links between MUs and APs.
Spectrum24 products use DSSS (direct sequence spread spectrum) to transmit
digital data from one device to another. Using FM, a radio signal begins with
a carrier signal that provides the base or center frequency. The digital data
signal is encoded onto the carriers using a DSSS "chipping algorithm". The
radio signal propagates into the air as electromagnetic waves. A receiving
antenna in the path of the waves absorbs the waves as electrical signals. The
receiving device demodulates the signal by reapplying the direct sequence
chipping code. This demodulation results in the original digital data.
Spectrum24 uses the environment (the air and certain objects) as the
transmission medium. Spectrum24 radio devices transmit in the
2.4 to 2.5-GHz frequency range, a license-free range throughout most of
the world. The actual range is country-dependent.
AP-4100 Series Access Point Product Reference Guide
10/100Base-T Ethernet
Tx Power Control
Kerberos Security
Auto Channel Select
Antenna diversity
Introduction
3
Advertisement
Table of Contents
