Component Description - Enterasys RoamAbout RBT-4102 Installation Manual

Introduction

Component Description

Antennas
The access point includes integrated diversity antennas for wireless
communications. A diversity antenna system uses two identical antennas to receive
and transmit signals, helping to avoid multipath fading effects. When receiving, the
access point checks both antennas and selects the one with the strongest signal.
When transmitting, it will continue to use the antenna previously selected for
receiving. The access point never transmits from both antennas at the same time.
The antennas transmit the outgoing signal as a toroidal sphere (doughnut shaped),
with the coverage extending most in a direction perpendicular to the antenna. The
antenna should be adjusted to an angle that provides the appropriate coverage for
the service area. For further information, refer to "Position the Antennas" on
page 2-3.
External Antenna Connectors
The access point supports external antenna connections for both the 2.4 GHz and
5 GHz radios. These antennas offer a variety of options for extending the radio
range and shaping the coverage area. For a list of external antennas, their model
type and gain refer to
For information on the external antennas available, refer to the RoamAbout
RBT-4102 / RBT-1602 Wireless Access Point Antenna Site Preparation and
Installation Guide. This document is available for download from
http://www.enterasys.com/products/wireless.
LED Indicators
The access point includes four status LED
indicators, as described in the following
figure and table.
LED Status
Power On Green
Flashing Green
On Amber
Flashing Amber
(Prolonged)
1-4
"External Antennas"
Description
Indicates that the system is working normally.
Indicates:
• running a self-test.
• loading software program.
Indicates a CPU or system failure.
Indicates system errors.
on page C-8.
Power
Ethernet
Link/Activity
802.11a 802.11b/g
Wireless Wireless
Link/Activity Link/Activity