Enterasys RoamAbout Site Preparation And Installation Manual
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Summary of Contents for Enterasys RoamAbout
- Page 1 ™ E N J O Y T H E F R E E D O M O F W I R E L E S S N E T W O R K I N G Outdoor Antenna Site Preparation and Installation Guide E N T E R A S Y S .
- Page 3 Notice Enterasys Networks 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 Enterasys Networks to determine whether any such changes have been made. The hardware, firmware, or software described in this manual is subject to change without notice.
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Page 4: Regulatory Information
• This device must accept any interference that may cause undesired operation. Europe - EU Declaration of Conformity Enterasys Networks declares that the RoamAbout products included in the RoamAbout Outdoor Kit conform to the specifications listed below, following the provisions of the EMC Directive 89/336/EEC: •... - Page 5 Notice • Enterasys Networks is not responsible for any radio or television interference caused by unauthorized modification of the devices included with the RoamAbout Outdoor Kit, or the substitution or attachment of connecting cables and equipment other than that specified by Enterasys Networks.
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Page 7: Table Of Contents
Contents Preface Associated Documents ............viii Getting Help . - Page 8 Table of Contents 3 Antenna Installation Installation Overview ............3-2 Verify Component Connector Polarity .
- Page 9 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, and other wireless products that use an 802.11 Direct Sequence (DS) compliant radio.
- Page 10 Preface 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 RoamAbout Access Point 2000 Hardware Installation Guide RoamAbout Access Point 2000 Hardware Installation Quick Start...
- Page 11 A description of the problem A description of any action(s) already taken to resolve the problem The serial and revision numbers of all involved Enterasys Networks products in the network A description of your network environment (for example, layout, cable type)
- Page 12 Preface 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 WARNING personal injury or death. CAUTION: Contains information essential to avoid damage to the equipment.
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Page 13: Choosing A Wireless Network Configuration
RoamAbout outdoor antennas. It is intended for sales engineers or site evaluators. If after reviewing this document you require additional technical information or support prior to ordering product, contact your authorized Enterasys Networks Sales Representative or see the RoamAbout web site: http://www.enterasys.com/wireless... -
Page 14: Determining The Antenna Locations
Determining the Antenna Locations 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 Options”... - Page 15 Determining the Antenna Locations Table 1-1: Distances and Line of Sight Clearance (FCC) Data 14 dBi Yagi to 14 dBi Yagi 14 dBi Yagi to 7 dBi Omni 7 dBi Omni to Rate Vehicle-Mount Mbit/s Distance Line of Distance Line of Distance Line of Sight...
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Page 16: Roamabout Pc Card Variations
Determining the Antenna Locations 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 to the European Telecommunications Standards Institute (ETSI) standards. - Page 17 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 choose, in combination with the height of the antenna installation above ground, provide sufficient clearance to allow your antenna installation to cover the distance between the two sites.
- Page 18 Determining the Antenna Locations Figure 1-2: Potential Obstacles to Line of Sight (not to scale) Building blocking line of sight Power lines blocking line of sight 100_02 Trees blocking line of sight 1-6 Site Preparation...
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Page 19: Other Factors That Can Reduce Antenna Range
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-emissivity (low-e) glass, crowded parking lots, water, moist earth, moist vegetation, and above-ground power or telephone lines. -
Page 20: Other Requirements
Determining the Antenna Locations 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 the antenna from direct lightning strikes. 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. -
Page 21: Antenna Options
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 GHz frequency band featuring an omni-directional pattern with a nominal gain of 5 dBi. The vehicle-mount antenna can be mounted on vehicles, such as fork-lift trucks, that need continuous access to network data whether inside or outside of the building. -
Page 22: Roamabout 14 Dbi Directional Antenna
Antenna Options 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 numbers in the RoamAbout directional antenna kit. - Page 23 Antenna Options Figure 1-5: Example Outdoor Yagi Antenna Configuration Site Preparation 1-11...
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Page 24: Roamabout 7 Dbi Omni-Directional Antenna
Antenna Options 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 covering. With the hardware provided, this vertically-polarized antenna can be mounted on an antenna mast with an outside diameter of up to 51mm (2 in). - Page 25 Antenna Options Figure 1-6: Example Omni-Directional Antenna Configuration Site Preparation 1-13...
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Page 26: Contacting An Antenna Installation Company
Contacting an Antenna Installation Company 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 describes tasks that the installer may need to perform. The antenna installation professional should be licensed or certified in NOTE accordance with local regulations. - Page 27 WARNING national codes, local electrical codes, and with other regulations governing this type of installation. Enterasys Networks, its channel partners, resellers, and distributors assume no liability for personal injury, property damage, or violation of government regulations that may arise from failing to comply with the instructions in this guide.
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Page 29: Determining The Location Of The Access Point
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. -
Page 30: Overview Of Connecting Cables To The Access Point
Overview of Connecting Cables to the Access Point 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 Access Point 2000 Hardware Installation Guide. - Page 31 Overview of Connecting Cables to the Access Point Remove the plastic cap from the PC Card and connect the pigtail cable. After the Lightning Protector has been installed and grounded, connect the other end of the pigtail cable to the Lightning Protector. If using the remote power option, connect the Ethernet cable from the Access Point to the Access Point connector on the remote power adapter.
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Page 32: Overview Of The Access Point Configuration
Overview of the Access Point 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 Guide or click the Help button in the Access Point Manager. Before you begin, you need the following: A valid unused IP address for each Access Point from the network administrator. - Page 33 Select LAN-to-LAN Multipoint in the Bridge Mode field. You must purchase a license with a valid activation key to enable Multipoint NOTE Bridge Mode. Contact your Enterasys Networks Representative. b) Enter the Multipoint activation key. c) Click on the LAN-to-LAN Multipoint Properties button in the Wireless Parameters dialog box.
- Page 34 Overview of the Access Point Configuration d) Enter the wireless MAC addresses of the other Access Points. Click OK when done. Then click OK in the Wireless Parameters dialog box. 11. For all other Access Points, select LAN-to-LAN Endpoint in the Bridge Mode field. In the Wireless MAC Address field, enter the wireless MAC address of the remote Access Point (Point-to-Point) or central Access Point (Point-to-Multipoint).When done, click OK in the Wireless Parameters dialog box.
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Page 35: Antenna Installation
Chapter 3 Antenna Installation This chapter provides the information necessary for a professional antenna installer to install the RoamAbout antennas. WARNING: Antennas should only be installed by a qualified antenna installer. The antenna installation professional should be licensed or WARNING certified in accordance with local regulations. -
Page 36: Installation Overview
Installation Overview Installation Overview The installation process is summarized in the following steps. The following sections in this chapter provide additional details. Make sure the Access Points are mounted and configured as specified in Chapter Check the cable connectors to verify that they are the correct polarity for your installation. - Page 37 Verify Component Connector Polarity Figure 3-1: Selecting the Correct N-Type Connector ETSI Countries: France, Spain, and FCC Countries. Japan. Asia Pacific FCC and ETSI. 1 - PC Card connector 1 - PC Card connector 2 - Standard-N Male 2 - Reverse Polarity-N Female Standard-N Female on both ends Reverse Polarity-N Male on both ends Standard-N Male on both ends...
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Page 38: Grounding System
Grounding System 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 mast, RoamAbout Access Point, and RoamAbout Lightning Protector must be connected to the same ground. - Page 39 Lightning Protector Installation To install the RoamAbout Lightning Protector, perform the following steps: Determine a suitable location for the Lightning Protector as described in Chapter As shown in Figure 3-2, secure bracket (A) to the wall using two screws (F). Use a ring-terminal to connect ground-wire (C) to bolt (B).
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Page 40: Mounting The Antenna
Mounting the Antenna 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 reflections, install the antenna at least 2 meters (6 feet) away from all other antennas. If you need to mount multiple antennas on a single mast, alternate the mounting of directional antennas for vertical and horizontal polarization In subfreezing conditions, the communications link could fail if an antenna is exposed to... -
Page 41: Antenna Polarization
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 emitting from a Yagi directional antenna are linear, leaving the antenna in the same plane as the antenna elements. -
Page 42: Mounting The Directional Antenna
Mounting the Antenna 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 the antenna in order to better aim it at the opposite end of the wireless link. - Page 43 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 Direction of Maximum Signal Backing Plate Antenna Mounting Base Flatwasher Always place Flatwashers between nuts or bolts and Antenna Mounting Base! Intermediate Plate (not included).
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Page 44: Mounting The Omni-Directional Antenna
Mounting the Antenna 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. Refer to Figure 3-5 and perform the following: Insert the threaded portion of the antenna mounting base (A) through the top of the... - Page 45 Mounting the Antenna Figure 3-5: Mounting the Omni-Directional Antenna to a Mast Antenna Installation 3-11...
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Page 46: Roamabout Pigtail Connection
Mounting the Antenna 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. Drill a hole in the top of the vehicle so that the antenna connector (at the bottom of the antenna as shown in Figure 3-6) but not the base fits through the hole. -
Page 47: Connecting The Antenna Cables
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 Protector C = Low-Loss Antenna Cable D = Outdoor Antenna Cable The Pigtail Connection (A) connects the PC Card to the Lightning Protector... -
Page 48: Connecting The Cables
Connecting the Antenna Cables Connecting the Cables Once the antenna is properly installed, you can connect the antenna to the RoamAbout Access Point via the RoamAbout Lightning Protector. Verify that the low-loss antenna cable is properly connected to the antenna cable. Secure the low-loss cable to the mast such that the cable connectors do not support the full weight of the cable. -
Page 49: Optimizing Roamabout Outdoor Antenna Placement
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. -
Page 50: Routine Maintenance
Routine Maintenance 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 activity in your area. Contact a local antenna installation company to determine the maintenance NOTE schedule for each RoamAbout Lightning Protector in your outdoor antenna installation. -
Page 51: Specifications
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 normally mounted on a mast and vertically polarized. Table A-1: 14 dBi Directional Antenna Specifications Mechanical •... -
Page 52: Roamabout 14 Dbi Directional Antenna
RoamAbout 14 dBi Directional Antenna Electrical Continued • 30.8 Degrees Vertical (E-plane °) • 31.4 Degrees Horizontal (H-plane °) • Polarization Linear, Vertical or Horizontal Antenna Environment • +60°C (140°F) - 40°C (-40°F) Operating Temperature • At least 128 km/h (80 mph) Wind/survival (mph) •... -
Page 53: Roamabout 7 Dbi Omni-Directional Antenna
RoamAbout 7 dBi Omni-Directional Antenna 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 covering. With the hardware provided, this vertically-polarized antenna can be mounted on an antenna mast with an outside diameter of up to 51 mm (2 in). -
Page 54: Vehicle-Mount Antenna
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 vehicle-mount antenna. Table A-3: Vehicle-Mount Antenna Specifications Mechanical Cable Size... -
Page 55: Roamabout Pigtail Connection
RoamAbout Pigtail Connection 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 Card. -
Page 56: Low-Loss Antenna Cable
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, carefully determine the distance between the locations where you intend to mount the RoamAbout Access Point and outdoor antenna. - Page 57 Low-Loss Antenna Cable Table A-6: Cable Specifications for the 15 Meter (50 Foot) Antenna Mechanical Specifications Length 15 meter (50 ft) Diameter 10 mm (0.4 in) Weight 101.2 gram/meter (0.068 lbs/ft) Bend Radius 25 mm (1 in) Connectors • FCC Countries Reverse Polarity-N (Female on both ends) •...
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Page 58: Roamabout Lightning Protector
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 the RoamAbout Lightning Protector. Table A-8: Lightning Protector Specifications Mechanical Size...