Cabletron Systems 9033073 manual Antenna Mast/Wall Bracket, Tripod Mount

Page 33

Installation Guidelines

Overview of the Outdoor Installation

Environments with large reflective surfaces include:

Buildings with mirrored-glass or low emissivity (low-e) glass

Crowded parking lots

Water or moist earth and moist vegetation

Above ground power/telephone lines

Seasonal factors that could have an effect on signal propagation may occur in the following situations:

If there are lots of trees in the signal path, marginal communications during times of low foliage could fail at other times when foliage is high.

In subfreezing conditions, the communications link could fail if an antenna is exposed to ice buildup or covered with snow.

In these cases, consult your antenna installation contractor, or take other appropriate steps to maintain/optimize wireless performance.

Antenna Mast/Wall Bracket

Two examples of mounting an antenna include:

Tripod Mount

Wall (Side) Mount

Tripod Mount

The tripod mount is used primarily on peaked and flat roofs. The antenna mast must be secured to the roof using 3 or 4 guy wires that are 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 meter (10 ft) section of the mast.

Outdoor Antenna Installation Guide

2-13

Image 33
Contents RoamAbout 802.11 Outdoor Antenna Installation Guide Page RoamAbout 802.11 Outdoor Antenna Installation Guide Page Canada Regulatory InformationOutdoor Antenna Installation Guide Your email address Getting HelpPage Table of Contents Determining Range & Clearance RoamAbout 14-dBi Directional Antenna Page Introduction About This GuideWho Should Use This Guide Installing the Antenna Installation GuidelinesOrganization of this Guide Introduction This ChapterAppendix D Calculating Range & Clearance Appendix C The Antenna Cabling SystemRoamAbout Outdoor Kit Introduction Configuration and Management Installing a RoamAbout Access PointHardware Specifications Finding Additional InformationOther Sources of Information Additional files on your diskettesPage Site Prerequisites Installation GuidelinesOverview of the Indoor Installation Pre-Installation ChecklistSelecting the Right RoamAbout PC Card Indoor Installation OverviewRoamAbout PC Card Identification Installation Guidelines Placement of the RoamAbout Access Point Installation Guidelines Antenna Cable Route Placement of the Lightning ProtectorInstallation Guidelines Antenna Mast/Wall Bracket not included in kit Overview of the Outdoor InstallationAntenna Placement Potential Obstacles for a Directional Antenna Tripod Mount Antenna Mast/Wall BracketAntenna Mast Requirements Wall Side MountRoamAbout Antennas Grounding SystemAntenna Polarization Antenna Alignment AP Manager Point-to-Point Diagnostics ScreenAntenna Cable Routing Before Climbing the Roof Page Fresnel Zone Determining Range ClearanceDetermining Range & Clearance Other Considerations Page Planning the Antenna Installation Installing the AntennaElectrical Hazard Warnings Safety PrecautionsElectrical Hazard Warnings Installation Overview Mounting the Antenna Mounting the Directional AntennaMounting on a Mast Prevent damage to the plastic antenna mounting base Mounting on a Flat Surface Mounting the 14-dBi Antenna to a Wall Mounting the Omni-directional AntennaMounting the Omni-Directional Antenna to a Mast Connecting the Antenna Cable Installing the Antenna Sealing the Cable Connectors Contents of the Antenna Box RoamAbout 14-dBi Directional AntennaGeneral Description RoamAbout 14-dBi Directional Antenna Table A-1 Specifications 14-dBi Directional AntennaRoamAbout 7-dBi Omni Directional Antenna RoamAbout 7-dBi Omni-Directional Antenna Selecting the Correct Connector Type Antenna Cabling SystemOutdoor Cabling Components Antenna Cabling System Table C-1 Selecting the Correct N-Type ConnectorOutdoor Cabling Components Table C-2 Cable Assembly Specifications RoamAbout Cable AssemblyRoamAbout Lightning Protector Table C-3 Lightning Protector SpecificationsFigure C-1 Lightning Protector Installation InstallationRoutine Maintenance Low-Loss Antenna Cable Table C-4 Cable Specifications for the 6m 20 ft AntennaTable C-6 Cable Specifications for the 22m 75 ft Antenna Table C-5 Cable Specifications for the 15m 50 ft AntennaPage Introduction Calculating Range ClearanceDynamic Range Budget MBit/s Omni-Directional 7-dBi Table D-1 Dynamic Range FCCTable D-2 Dynamic Range ETSI. France & Japan Determine Line-of-Sight Clearance Link speed versus RangeDynamic Range Minimum Clearance Maximum Range Table D-3 Minimum Clearance for Maximum RangeCalculating Range & Clearance Determine Typical Range Table D-4 Actual Clearance and Typical Range Which Antenna do You Need