Enterasys Networks 9033348-02 manual Optimizing RoamAbout Outdoor Antenna Placement

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Optimizing RoamAbout Outdoor Antenna Placement

Optimizing RoamAbout Outdoor Antenna Placement

If an Access Point is connected to an outdoor directional antenna, the antenna must be pointed directly at the antenna for the other Access Point. A misaligned antenna can decrease the signal level or prevent communications. Aligning an omni-directional antenna is less critical due to its wide radiation pattern. For optimal performance, make sure the antennas are properly aligned:

Use a pair of binoculars to point the antennas at each other.

Analyze the quality of the radio link using the RoamAbout Access Point Manager.

The RoamAbout Access Point Manager provides a Link Test diagnostic tool that can help you adjust the directional antenna to optimize the signal between Access Points. To test the link between two Access Points that both use directional antennas, you may need one person at each antenna and a method to communicate with those people. For details on installing and using the Access Point Manager, refer to the RoamAbout 802.11 Wireless Networking Guide.

To run the Link Test tool, perform the following steps:

1.There are two ways to access the Link Test window:

a)Highlight the Access Point client from the Managed List field in the AP Manager main window and click on the Clients button.

b)Click on the Integrity pull-down menu in the AP Manager main window and select Link Test. Select a client from the drop-down list.

2.Click on the Start Sampling button to start the Link Test.

3.To improve the signal strength, watch the SNR indicator and slowly move the antenna in the direction that improves SNR. You may need have a person at the remote location move the antenna while monitoring the SNR.

4.To stop the test, click the Stop Sampling button.

Antenna Installation 3-15

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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