Cabletron Systems 802.11 - Manuals

Page 3 - Notice

iii Notice Notice Cabletron Systems reserves the right to make changes in specifications and other information contained in this document without prior notice. The reader should in all cases consult Cabletron Systems to determine whether any such changes have been made. The hardware, firmware, or so...

Page 5 - Table of Contents

Table of Contents v Contents Overview .............................................................................................................. 1 Requirements ....................................................................................................... 2 Lightning protection ............

Page 7 - Site Preparation Guide; Overview

1 Site Preparation Guide Overview This guide describes the site requirements that are needed for the successful installation of RoamAbout Outdoor Antennas. It is intended for sales engineers or site evaluators. The outdoor antenna uses RF antenna technology, which lets you extend your LAN from build...

Page 8 - Requirements; Lightning protection

Site Preparation Guide 2 Requirements 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 arrestor is necessary t...

Page 11 - Factors that can reduce antenna range

Site Preparation Guide 5 Figure 3: Large Reflecting Surfaces 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. Examples of reflecting surfaces are buildings with low-emissivity (low-e) ...

Page 12 - Required Data for Antenna Installation Company; The Fresnel Zone

Site Preparation Guide 6 Required Data for Antenna Installation Company The Fresnel Zone You need a clear line-of-sight between antennas to set up an outdoor installation that meets your requirements in terms of range and throughput performance. The shape of the radio beam, also defined as the Fresn...

Page 14 - Other Considerations

Site Preparation Guide 8 Other Considerations The strength of each transmitted signal must be considered when planning your antenna installation. Two parameters are usually listed to indicate transmitted signal strength: output power of the radio transmitter, and gain of the antenna system. • Output...

Page 15 - Antenna Options; RoamAbout 14-dBi Directional Antenna

Site Preparation Guide 9 Antenna Options RoamAbout 14-dBi Directional Antenna The RoamAbout 14-dBi Directional Antenna is a high-gain antenna for the 2.4 GHz frequency band. The antenna is a totally enclosed 16-element Yagi designed for point-to-point communications. It has a typical VSWR of 1.5:1 a...

Page 18 - Component

Site Preparation Guide 12 The following lists components and part numbers typically used in an outdoor antenna configuration. Refer to the RoamAbout web site listed on page iii for the latest information. *European Telecommunications Standards Institute **20’ and 75’ Low-Loss cables are also availab...

Page 21 - Verify Component Connector Polarity; Reverse Polarity-N Female

Site Preparation Guide 15 Verify Component Connector Polarity The components supplied with your Outdoor Antenna Kit are configured with either Standard-N connectors or Reverse Polarity-N connectors, subject to the country where the kit was purchased. Refer to the following table to verify that the p...

Page 22 - Reviewing the Site Preparation Checklist

Site Preparation Guide 16 Reviewing the Site Preparation Checklist Lightning protection √ Determine the mounting location for the lightning rod (positioned near the antenna). √ Ensure an earth ground location for the antenna structure and lightning arrestor. Mounting requirements √ Determine the typ...

Page 23 - For Additional Assistance

Site Preparation Guide 17 For Additional Assistance If you are purchasing your system through a Channel Partner, contact that Channel Partner for assistance. If you are purchasing your system from Cabletron, contact Cabletron using one of the following methods: World Wide Web http://www.cabletron.co...