Enterasys Networks 9033348-02 manual Chapter Access Point Placement Configuration

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Chapter 2

Access Point Placement and

Configuration

This chapter is for the antenna installer and network manager to determine where to place the RoamAbout Access Point and Lightning Protector. This chapter also provides an overview of cabling and configuring the Access Point.

Determining the Location of the Access Point

The RoamAbout Access Point connects to a Lightning Protector with a 50 centimeter (19.5 inch) cable. The Lightning Protector connects to the outdoor antenna with a standard 6 meter (20 foot), 15 meter (50 foot), or 22 meter (75 foot) low-loss cable. A longer cable can decrease the distance achievable between antennas. The ideal location to install your RoamAbout Access Point and Lightning Protector must satisfy the following requirements:

The location must be indoors to protect the Access Point from extreme weather conditions, excessive heat and humidity, and to keep the unit free from vibration and dust.

The Lightning Protector and antenna mast must be connected to the same grounding system as the AC wall outlet ground (see “Verify Component Connector Polarity” section on page 3-2).

The location must provide a connection to the network backbone via an Ethernet LAN cable going to a hub, bridge, or directly into a patch panel.

The location must be close to where the low-loss antenna cable will enter the building. The low-loss cable connecting the antenna to the Lightning Protector should not exceed a 22 meter (75 foot) length.

The Lightning Protector must be accessible so that the Gas Discharge Tube can be replaced, as described in the “Routine Maintenance” section on page 3-16 .

Access Point Placement and Configuration 2-1

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Contents Outdoor Antenna Site Preparation and Installation Guide Page Page Regulatory Information Electrical Hazard Warnings Page Contents Antenna Installation Intended Audience PrefaceComponent Information Location Associated DocumentsAddress TechWriting@enterasys.com Getting HelpIcon Meaning Document ConventionsChapter Site Preparation Choosing a Wireless Network ConfigurationMaximum Distances Between Antennas Determining the Antenna LocationsDistances and Line of Sight Clearance FCC Line of Sight RoamAbout PC Card VariationsFresnel Zone and Line of Sight Clearance Potential Obstacles to Line of Sight not to scale Large Reflecting Surfaces Other Factors That Can Reduce Antenna RangeOther Requirements Installer is responsible for local building codesRoamAbout 5 dBi Vehicle-Mount Antenna Antenna OptionsKIT RoamAbout 14 dBi Directional AntennaExample Outdoor Yagi Antenna Configuration Antenna KIT RoamAbout 7 dBi Omni-Directional AntennaExample Omni-Directional Antenna Configuration Lightning Protection Contacting an Antenna Installation CompanyMounting Requirements Line of SightInstallation Requirements Page Determining the Location of the Access Point Chapter Access Point Placement ConfigurationAccess Point 2000 Installation Overview Overview of Connecting Cables to the Access PointOverview of Connecting Cables to the Access Point Settings from the RoamAbout Access Point Installation Menu Overview of the Access Point ConfigurationRoamAbout Access Point Manager Overview of the Access Point Configuration Chapter Antenna Installation Verify Component Connector Polarity Installation OverviewSelecting the Correct N-Type Connector Grounding System Lightning Protector InstallationLightning Protector Installation Mounting the Antenna Antenna Polarization Antenna Cables section on Mounting the Directional AntennaMounting the 14 dBi Antenna to a Mast Mounting the Omni-Directional Antenna Mounting the Omni-Directional Antenna to a Mast Mounting the Vehicle-Mount Antenna Mounting the Vehicle-Mount AntennaAntenna Cable Route Connecting the Antenna CablesConnecting the Cables Optimizing RoamAbout Outdoor Antenna Placement Routine Maintenance RoamAbout 14 dBi Directional Antenna Table A-1 14 dBi Directional Antenna SpecificationsRoamAbout 14 dBi Directional Antenna RoamAbout 7 dBi Omni-Directional Antenna Table A-2 7 dBi Omni-Directional Antenna SpecificationsVehicle-Mount Antenna Table A-3 Vehicle-Mount Antenna SpecificationsRoamAbout Pigtail Connection Table A-4 Pigtail Connection SpecificationsLow-Loss Antenna Cable Mechanical SpecificationsConnectors RoamAbout Lightning Protector Table A-8 Lightning Protector Specifications