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®
RoamAbout
Wireless Networking
RBT-4102 / RBT-1602 Wireless Access Point
Antenna Site Preparation and Installation Guide
P/N 9034254
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Electrical Hazard: Only qualified personnel should perform installation procedures. Riesgo Electrico: Solamente personal calificado debe realizar procedimientos de instalacion. Elektrischer Gefahrenhinweis: Installationen sollten nur durch ausgebildetes und qualifiziertes Personal vorgenommen werden. Notice EnterasysNetworks reserves the right to make changes in specifications and other information contained in this document and its web site without prior notice. The reader should in all cases
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ii
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Contents About This Guide Intended Audience ............................................................................................................................................vii Related Documents ......................................................................................................................................... viii Getting Help ..........................................................................................................................................
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Mounting the RoamAbout 5.3 and 5.8 GHz Omni-Directional Antennas ...............................................3-19 Mounting On a Mast .........................................................................................................................3-20 Mounting On a Wall ..........................................................................................................................3-21 Mounting the RoamAbout 5.8 GHz Panel Antenna ...............................................
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3-14 Attaching the 5.8 GHz Panel Antenna Bracket to the Antenna ........................................................ 3-27 3-15 Mounting RoamAbout 4.9 to 5.9 GHz Sector Panel Antenna — Wide Mast .................................... 3-29 3-16 Mounting RoamAbout 4.9 to 5.9 GHz Sector Panel Antenna—Narrow Mast................................... 3-30 3-17 Installing External Flaps for 4.9 to 5.9 GHz Sector Panel Antenna .................................................. 3-31 3-18 Mounting the 802
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A-14 802.11a/b/g Range Extender Omni-Directional Antenna Specifications ..........................................A-16 A-15 Pigtail Connection Specification .......................................................................................................A-17 A-16 RBTES-L200 Cable Specification.....................................................................................................A-18 A-17 RBTES-L400 Cable Specifications..........................................................
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About This Guide This guide describes the requirements for the successful installation of the RoamAbout indoor and outdoor antennas used in a RoamAbout wireless network. A RoamAbout wireless network consists of RoamAbout wireless products that use an 802.11 a/b/g compliant radio. Electrical Hazard: Only qualified personnel should perform installation procedures. Riesgo Eléctrico: Solamente personal calificado debe realizar procedimientos de instalacion. Elektrischer Gefahrenhinweis: Installati
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Related Documents Related Documents The documentation, drivers, and utilities can also be downloaded from the RoamAbout Wireless web site. Check the RoamAbout Wireless web site regularly for product upgrades. http://www.enterasys.com/products/wireless/ Getting Help For additional support related to the antennas, or this document, contact EnterasysNetworks using one of the following methods: World Wide Web http://www.enterasys.com/services/support/ Phone 1-800-872-8440 (toll-free in U.S. and Ca
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Conventions Used in This Guide Conventions Used in This Guide The following conventions are used in this guide. Note: Calls the reader’s attention to any item of information that may be of special importance. Caution: Contains information essential to avoid damage to the equipment. Precaución: Contiene información esencial para prevenir dañar el equipo. Achtung: Verweißt auf wichtige Informationen zum Schutz gegen Beschädigungen. Electrical Hazard: Warns against an action that could result in pe
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Conventions Used in This Guide x About This Guide
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1 Site Preparation This chapter describes the site requirements for the successful installation of RoamAbout antennas. It also includes brief descriptions of the RoamAbout indoor and outdoor antenna options. This information is intended for sales engineers or site evaluators. The antennas listed in this document are only for use with the RoamAbout Wireless Access Point RBT‐4102 and the Wireless Access Point RBT‐1602. Not all antennas listed in this document can be used by both wireless acce
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Choosing Antennas for Wireless Network Configurations Choosing Antennas for Wireless Network Configurations The type and number of antennas that you need depend on the configuration of your wireless network. Table 1‐1 lists the general type of antenna to use for various wireless network configurations. Table 1-1 Antennas for Wireless Network Configurations Wireless Network Description Antenna Type Configuration LAN-to-LAN Point-to-Point This is a wireless link between Directional antennas, typ
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Determining the Antenna Locations Determining the Antenna Locations The following factors determine the locations where you can place the antennas relative to one another and the distances between them: •Type of antennas. The RoamAbout antennas are described in Antenna Models on page1‐9. •Length of cable connecting the antenna to the AP. • Data rate required. •In a LAN‐to‐LAN network, the distance between the buildings. • Obstructions in the signal path. •In a wireless infrastructure network,
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Determining the Antenna Locations Table 1-2 Outdoor Distance Matrix Between Antennas (RBT-4102 LAN to LAN/MultiPoint) Signaling GHz Antenna Cables used Rate Throughput Miles 5.7 - 5.8 RBTES-AH-P23M/M0M Pigtail and the 54 Mbit/s 21 Mbit/s 0.75 LMR-600-C25F at (23 dBI to 10 dBI) 36 Mbit/s 18 Mbit/s 1.5 each end For use in North America 24 Mbit/s 13 Mbit/s 2.5 only. 6 Mbit/s 4.4 Mbit/s 4 Pigtail and the 54 Mbit/s 21 Mbit/s 0.5 LMR-600-C50F at 36 Mbit/s 18 Mbit/s 1 each end 24 Mbit/s 13 Mbit/s 1
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Determining the Antenna Locations Line of Sight The shape of the radio beam, defined as the Fresnel Zone, is widest in the middle. The Fresnel Zone is shown as the gray area between the antennas in Figure1‐1. The exact shape and width of the Fresnel Zone is determined by the distance between the antenna and frequency of the radio signal. The radius of the radio beam, shown as the lower half of the Fresnel Zone, is the distance from the center of the beam outward in any direction. The length
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Determining the Antenna Locations Figure 1-2 Potential Obstacles to Line of Sight (not to scale) 1-6 Site Preparation
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Determining the Antenna Locations Other Factors That Can Reduce Antenna Range Large reflecting surfaces that are parallel or partly perpendicular to the radio signal cause reflections of the radio signal (see Figure1‐3). Examples of reflecting surfaces are buildings with low‐emissivity (low‐e) glass, crowded parking lots, water, moist earth, moist vegetation, and above‐ground power or telephone lines. Because surrounding objects, such as trees, power lines, and other antennas, seriously reduc
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Determining the Antenna Locations Additional Location Requirements This section describes other requirements to meet before installing the RoamAbout outdoor antennas. • Lightning Protection A lightning rod must be placed close to the antenna mast or wall bracket. This is required to protect the antenna from direct lightning strikes. •Grounding System Direct earth grounding of the antenna and the Lightning Protector is necessary to protect the installation from lightning and the build‐up of s
