Enterasys Networks 9033348-02 - Manuals

v Contents Preface Associated Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viiiGetting Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ixDocumen...

Table of Contents vi 3 Antenna Installation Installation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2Verify Component Connector Polarity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2...

vii Preface This guide describes the requirements that are needed for the successful installation of the RoamAbout outdoor antennas used in a RoamAbout wireless network. A RoamAbout wireless network consists of RoamAbout wireless products, such as the RoamAbout PC Card and RoamAbout Access Point, an...

Preface viii Associated Documents The documentation, drivers, and utilities can also be downloaded from the RoamAbout Wireless web site. Check the RoamAbout Wireless web site regularly for product upgrades. http://www.enterasys.com/wireless Component Information Location RoamAbout Access Point RoamA...

ix Preface Getting Help For additional support related to this device or document, contact Enterasys Networks using one of the following methods: Before calling Enterasys Networks, please have the following information ready: • Your Enterasys Networks service contract number • A description of the p...

Preface x Document Conventions The following icons are used in this document: Icon Meaning ELECTRICAL HAZARD: Warns against an action that could result in personal injury or death. WARNING: Warns against an action that could result in personal injury or death. CAUTION: Contains information essential...

Site Preparation 1-1 Chapter 1 Site Preparation This chapter describes the site requirements that are needed for the successful installation of the RoamAbout outdoor antennas. It is intended for sales engineers or site evaluators. If after reviewing this document you require additional technical inf...

Determining the Antenna Locations 1-2 Site Preparation Determining the Antenna Locations The locations where the antennas can be placed relative to one another and the distance between them are based on the following factors: • Type of antennas. The RoamAbout antennas are described in the “Antenna O...

Site Preparation 1-3 Determining the Antenna Locations Table 1-1: Distances and Line of Sight Clearance (FCC) Table 1-2: Distances and Line of Sight Clearance ETSI 1 The Yagi antenna must be connected to an Access Point configured with the Hi-Gain matched RoamAbout PC Card. Data RateMbit/s 14 dBi Ya...

Determining the Antenna Locations 1-4 Site Preparation RoamAbout PC Card Variations There are two variations of the RoamAbout PC Card: standard and Hi-Gain matched. The Hi-Gain matched variation of the RoamAbout PC Card is only used when connecting to a directional antenna in countries that adhere t...

Site Preparation 1-5 Determining the Antenna Locations Figure 1-1: Fresnel Zone and Line of Sight Clearance If a significant part of the Fresnel Zone is obstructed, a portion of radio energy is lost, resulting in reduced performance. For optimal performance, ensure that the antenna products you choo...

Site Preparation 1-7 Determining the Antenna Locations Other 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 (see Figure 1-3 ). Examples of reflecting surfaces are buildings with low-e...

Determining the Antenna Locations 1-8 Site Preparation Other Requirements The following describes other requirements to meet before installing the RoamAbout outdoor antennas. • Lightning Protection A lightning rod must be placed close to the antenna mast or wall bracket. This is required to protect ...

Site Preparation 1-9 Antenna Options Antenna Options The following sections describe the RoamAbout outdoor antennas. Appendix A contains the specifications for each antenna. RoamAbout 5 dBi Vehicle-Mount Antenna The RoamAbout vehicle-mount antenna ( Figure 1-4 ) is a broadband antenna for the 2.4 GH...

Antenna Options 1-10 Site Preparation RoamAbout 14 dBi Directional Antenna The directional antenna is a totally enclosed 16-element Yagi designed for point-to-point communications. The antenna is normally mounted on a mast and vertically polarized. The following table shows the components and part n...

Site Preparation 1-11 Antenna Options Figure 1-5: Example Outdoor Yagi Antenna Configuration Low-Loss Cable (2) Lightning Protector (6) Pigtail Connection (3) www .cabletron.com/wireless 1 2 MAC ADD SN TUV S2 S1 To Power Outlet Insert Ethernet Cable from Network Remote Power Adapter PC Card (5) INDO...

Antenna Options 1-12 Site Preparation RoamAbout 7 dBi Omni-Directional Antenna The RoamAbout omni-directional antenna is a broadband antenna for the 2.4 GHz frequency band featuring an omni-directional pattern with a nominal gain of 7 dBi. This antenna is encapsulated in a weatherproof protective co...

Contacting an Antenna Installation Company 1-14 Site Preparation Contacting an Antenna Installation Company Have an antenna installation professional install the outdoor antennas. The antenna installer provides the expertise to properly install, secure, and ground your antenna. The following describ...

Site Preparation 1-15 Contacting an Antenna Installation Company Installation Requirements √ Determine the best location for the Access Point. √ Determine the length of cable required from the antenna to the Access Point. √ Ensure the location has an accessible Ethernet connection. √ Determine the d...

Access Point Placement and Configuration 2-1 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 configur...

Overview of Connecting Cables to the Access Point 2-2 Access Point Placement and Configuration Overview of Connecting Cables to the Access Point Before cabling the Access Point, you should install the Access Point to a wall or ceiling. For detailed hardware installation procedures, see the RoamAbout...

Overview of the Access Point Configuration 2-4 Access Point Placement and Configuration Overview of the Access Point Configuration The following provides an overview of configuring the Access Point with the Access Point Manager. For detailed procedures, see the RoamAbout 802.11 Wireless Networking G...

Access Point Placement and Configuration 2-5 Overview of the Access Point Configuration Figure 2-2: RoamAbout Access Point Manager 10. If this is a Point-to-Multipoint configuration and the selected Access Point is the designated central Access Point, perform the following: a) Select LAN-to-LAN Mult...

Antenna Installation 3-1 Chapter 3 Antenna Installation This chapter provides the information necessary for a professional antenna installer to install the RoamAbout antennas. The RoamAbout outdoor antenna kits do NOT provide the following items, which may be necessary to install the antenna: • Mast...

Installation Overview 3-2 Antenna Installation Installation Overview The installation process is summarized in the following steps. The following sections in this chapter provide additional details. 1. Make sure the Access Points are mounted and configured as specified in Chapter 2 . 2. Check the ca...

Antenna Installation 3-3 Verify Component Connector Polarity Figure 3-1: Selecting the Correct N-Type Connector The term Male or Female does not refer to the connector thread, but to its center pin. If you purchase individual components, make sure you specify the correct N-Type connectors to match t...

Grounding System 3-4 Antenna Installation Grounding System Direct earth grounding of the antenna and the Lightning Protector is necessary to protect the installation from lightning and the build-up of static electricity. The grounding system must satisfy the following requirements: • The antenna mas...

Antenna Installation 3-5 Lightning Protector Installation To install the RoamAbout Lightning Protector, perform the following steps: 1. Determine a suitable location for the Lightning Protector as described in Chapter 2 . 2. As shown in Figure 3-2 , secure bracket (A) to the wall using two screws (F...

Mounting the Antenna 3-6 Antenna Installation Mounting the Antenna This section includes requirements and mounting guidelines for the RoamAbout outdoor antennas. Requirements for the Directional and 7 dBi Omni-Directional Antennas To minimize the influence of obstacles, signal interference or reflec...

Antenna Installation 3-7 Mounting the Antenna Antenna Polarization With RoamAbout outdoor antenna products, it does not matter what type of polarization you choose, as long as the antenna at one end of the communications link is mounted in the same plane as the antenna at the other end. Radio waves ...

Mounting the Antenna 3-8 Antenna Installation Mounting the Directional Antenna You can mount the RoamAbout 14 dBi directional antenna on a mast or a flat vertical surface such as a wall. In most cases, mounting the antenna on a mast allows more flexibility in adjusting the height and direction of th...

Antenna Installation 3-9 Mounting the Antenna Figure 3-3: Mounting the 14 dBi Antenna to a Mast Figure 3-4: Mounting the 14 dBi Antenna to a Wall Side View Top View ClampBacking PlateAntenna Mounting BaseFlatwasherAlways place flatwashers between nuts and the Antenna Mounting Base. Direction of Maxi...

Mounting the Antenna 3-10 Antenna Installation Mounting the Omni-Directional Antenna To avoid signal reflection, you should not install the antenna to the side of a building. The RoamAbout 7 dBi omni-directional antenna kit includes a metal backing plate, two hose clamps, and a nut and lockwasher. R...

Mounting the Antenna 3-12 Antenna Installation Mounting the Vehicle-Mount Antenna The vehicle-mount antenna is typically connected to a client in a wireless infrastructure network. The antenna is mounted to a moving vehicle, such as a fork-lift. 1. Drill a hole in the top of the vehicle so that the ...

Antenna Installation 3-13 Connecting the Antenna Cables Connecting the Antenna Cables To connect your RoamAbout Access Point to an outdoor antenna installation, you need the following components pictured on the right side of this page: A = RoamAbout Pigtail Connection (50 cm) B = RoamAbout Lightning...

Connecting the Antenna Cables 3-14 Antenna Installation Connecting the Cables Once the antenna is properly installed, you can connect the antenna to the RoamAbout Access Point via the RoamAbout Lightning Protector. 1. Verify that the low-loss antenna cable is properly connected to the antenna cable....

Antenna Installation 3-15 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...

Routine Maintenance 3-16 Antenna Installation Routine Maintenance Routine maintenance is required for each RoamAbout Lightning Protector in your outdoor antenna installation. Maintenance involves replacing the Gas Discharge Tube (GDT) at some interval depending on the lightning/transient discharge a...

Specifications A-1 Appendix A Specifications This appendix lists the specifications of the various RoamAbout outdoor antenna products. RoamAbout 14 dBi Directional Antenna The directional antenna is a totally enclosed 16-element Yagi designed for point-to-point communications. The antenna is normall...

Specifications A-2 RoamAbout 14 dBi Directional Antenna Electrical Continued • Vertical (E-plane °) 30.8 Degrees • Horizontal (H-plane °) 31.4 Degrees • Polarization Linear, Vertical or Horizontal Antenna Environment • Operating Temperature +60°C (140°F) - 40°C (-40°F) • Wind/survival (mph) At least...

Specifications A-4 Vehicle-Mount Antenna Vehicle-Mount Antenna The RoamAbout vehicle-mount antenna can be mounted on vehicles, such as fork-lift trucks, that need continuous access to networked data whether inside or outside of the building. The following table provides the specifications for the ve...

RoamAbout Pigtail Connection A-5 Specifications RoamAbout Pigtail Connection The RoamAbout Pigtail Connection is a proprietary cable used to connect the RoamAbout PC Card to a RoamAbout outdoor antenna system. One end of the cable has a proprietary connector which is connected to the RoamAbout PC Ca...

Specifications A-6 Low-Loss Antenna Cable Low-Loss Antenna Cable The RoamAbout low-loss cable is available in the following standard lengths: • 6 meters (20 feet) - see Table A-5 • 15 meters (50 feet) - see Table A-6 • 22 meters (75 feet) - see Table A-7 To ensure you order the right cable length, c...

Specifications A-8 RoamAbout Lightning Protector RoamAbout Lightning Protector The RoamAbout Lightning Protector is a surge arrestor that protects your sensitive RoamAbout equipment from high-voltage currents caused by discharge and transients at the antennas. Table A-8 lists the specifications for ...