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Tsunami MP.11a
Antenna Installation Guide
CPN 65756B
Issue Date: August 2003
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Tsunami MP.11a Antenna Installation Guide COPYRIGHT ©2003 Proxim Corporation, Sunnyvale, CA. All rights reserved. Covered by one or more of the following U.S. patents: 5,231,634; 5,875,179; 6,006,090; 5,809,060; 6,075,812; 5,077,753. This manual and the software described herein are copyrighted with all rights reserved. No part of this publications may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form by any means withou
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Tsunami MP.11a Antenna Installation Guide Contents Copyright ...............................................................................................................................................................2 Trademarks............................................................................................................................................................2 Regulatory Information....................................................................................
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Tsunami MP.11a Antenna Installation Guide General Description......................................................................................................................................44 Mounting Instructions....................................................................................................................................44 Specifications ................................................................................................................................
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Tsunami MP.11a Antenna Installation Guide About This Book This Tsunami MP.11a Antenna Installation Guide explains how to install and set up an outdoor antenna with the Tsunami MP.11a hardware. This guide does not explain how to erect antenna masts, nor how to install a safety grounding system. These prerequisites must be in place before installing the directional antenna. WHO SHOULD USE THIS GUIDE The installation of outdoor wireless links requires technical expertise. At the very least,
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Tsunami MP.11a Antenna Installation Guide Additional Files on Your Software CD-ROM All software CD-ROMs that come with your Tsunami products, include a readme.txt file. This file contains information about the software version and drivers. You are advised to print and read the readme.txt file prior to installing your Tsunami products, as it may contain additional information that was not available when this document was printed. Other Sources of Information All documentation listed abo
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Tsunami MP.11a Antenna Installation Guide The point-to-point link function lets you set up a connection between two locations as an alternative to: ▪ Leased lines in building-to-building connections ▪ Wired Ethernet backbones between wireless access points in hard-to-wire environments Point-to-Multipoint Network To connect more than two buildings, you can choose to: ▪ Set up multiple point-to-point links, using multiple pairs of Base Station and Subscriber Units ▪ Set up a single point-to
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Tsunami MP.11a Antenna Installation Guide Chapter 1. Preparing for Installation SITE PREREQUISITES Review all requirements outlined within the following sections before starting the installation procedure: ▪ Overview of the Indoor Installation ▪ Overview of the Outdoor Installation ▪ Climbing the Roof Prior to climbing on the roof or any other area where you intend to install the outdoor antenna, you are advised to: ▪ Verify that you have arranged all safety measures for outdoor or roo
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Tsunami MP.11a Antenna Installation Guide connect to N-type male connector pigtail extending from MP.11a unit Figure 3. Cable Setup for Indoor Installation On each end of the wireless link you will require the following items: ▪ A Tsunami MP.11a Base Station or Subscriber Unit ▪ A low-loss antenna cable to connect the indoor installation to the surge arrestor (optional) ▪ Female-female converter connector (optional) ▪ A surge arrestor to protect your sensitive Tsunami MP.11a equi
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Tsunami MP.11a Antenna Installation Guide ▪ The location provides a connection to the network backbone (an Ethernet LAN cable that is connected to a hub, bridge, or directly into a patch panel) ▪ The location is as close as possible to the point where the antenna cable will enter the building (see “Placement of the Surge Arrestor” below). ▪ The ideal location has a temperature of 0-55 degrees Celsius and a maximum relative humidity (non- condensing) of 95%. CAUTION! The Tsunami MP.11a har
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Tsunami MP.11a Antenna Installation Guide ▪ The location allows for easy disconnection of the surge arrestor from the cable connected to the unit. ▪ The location provides a connection to the same grounding system as the Tsunami MP.11a hardware and the outdoor antenna mast (as described in “Grounding System” on page 16). Antenna Cable Route The antenna cable must be connected from the antenna through the surge arrestor to the pigtail connector of the MP.11a unit. To plan the route of the
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Tsunami MP.11a Antenna Installation Guide OVERVIEW OF THE OUTDOOR INSTALLATION The outdoor installation of the link (point-to-point or point-to-multipoint) requires the following: ▪ An antenna ▪ A low-loss antenna cable (available in three lengths) ▪ Antenna mast or wall bracket for the antenna ▪ An adequate grounding system that meets the requirements described in “Grounding System.” ▪ Waterproofing of all connections Note: All outdoor cable connectors must be sealed with weatherproofi
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Tsunami MP.11a Antenna Installation Guide If any significant part of this zone is obstructed, a portion of the radio energy will be lost, resulting in reduced performance. Reduced performance can also occur when obstacles close to the antenna beam cause signal reflections or noise that interfere with the radio signal. The following figure shows some typical examples of obstacles that you must avoid for the directional antenna to operate effectively: ▪ Neighboring buildings ▪ Trees or oth
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Tsunami MP.11a Antenna Installation Guide To minimize the influence of obstacles, signal interference, or reflections, note the following guidelines: ▪ Mount the antenna as high as possible above the “ground” to allow maximum clearance: º In open areas, “ground” is the actual surface of the earth. º In dense urban areas, “ground” is to be interpreted as the height of the highest obstacle in the signal path between the two antenna sites. ▪ Avoid trees in the signal path to avoid signal abso
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Tsunami MP.11a Antenna Installation Guide Antenna Mounting There are two ways to erect an antenna mast: Tripod Mount and Wall (Side) Mount. Tripod Mount The tripod mount is primarily used on peaked and flat roofs. The antenna mast must be secured to the roof using 3 or 4 guy wires equally spaced around the mast. When the height of the antenna mast is more than 3 meters (10 ft), you are advised to use at least three guy wires for each 3 meters (10 ft) section of the mast. Wall (Side) Mou
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Tsunami MP.11a Antenna Installation Guide Chapter 2. Determining Range and Clearance When you read about wireless outdoor products, you often encounter the terms output power of the radio and gain of the antenna equipment as measures for the strength of the transmitted signal. ▪ Output power of radio equipment often depends on maximum limits as defined by local radio regulations; consequently, output power is, by definition, not the way to enhance wireless performance. ▪ High gain antenna
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Tsunami MP.11a Antenna Installation Guide Maximum Range The maximum range of your Tsunami MP.11a system is based upon: ▪ The Type of Outdoor Antenna Equipment ▪ The Data Speed of the Wireless Link ▪ The clearance of the signal path (see “Clearance Factor” on page 18). The values in this section are based on calculations that assume optimal radio conditions. They do not represent a guarantee that the same maximum distance can be achieved at your location. Differences in performance figur
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Tsunami MP.11a Antenna Installation Guide Note: The allowed antenna cables depend upon local radio regulations, the frequency, and the antenna gain used as listed in Table 5 on page 24 “Minimum Antenna Cable Loss in 5 GHz Bands.” Clearance Factor For optimal performance of your outdoor wireless link, the signal path between the Base Station Unit and Subscriber Unit must provide sufficient clearance. Note: A outdoor wireless link that lacks sufficient clearance will suffer from poor perform
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Tsunami MP.11a Antenna Installation Guide In Figure 5, you see two variables that determine the shape of the antenna beam, also referred to as Fresnel Zone: ▪ The distance between the antennas (a) ▪ The clearance required for optimal performance (b), where clearance should be interpreted as: º Vertical clearance above the ground and the highest buildings or objects in the signal path º Horizontal clearance from neighboring buildings and objects in the signal path. For optimal range and th
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Tsunami MP.11a Antenna Installation Guide Figure 6. Clearance Factor Diagram CALCULATIONS Availability of the microwave path is a prediction of the percent of time that the link operates without producing an excessive bit error rate (BER) due to multipath fading. In the absence of direct interference, availability is affected by the following: ▪ Path length ▪ Fade margin ▪ Frequency ▪ Terrain (smooth, average, mountainous) ▪ Climate (dry, temperate, humid) Depending upon the type
