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Alvarion BreezeNET DS.11 User Manual

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BreezeNET DS.11 Series
BU-DS.11
RB-DS.11
User's
Guide
September, 2000
Cat No. 213097
Rev A

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Summary of Contents for Alvarion BreezeNET DS.11

  • Page 1 BreezeNET DS.11 Series BU-DS.11 RB-DS.11 User's Guide September, 2000 Cat No. 213097 Rev A...
  • Page 2 Front Matter © 2000 by BreezeCOM Ltd. All rights reserved. No part of this publication may be reproduced in any material form without the written permission of the copyright owner. No part of this publication may be reproduced in any material form without the written permission of the copyright owner.

  • Page 3: Fcc Radiation Exposure Statement

    Electronic Emission Notices This device complies with Part 15 of the FCC rules, ETSI 300-328, UL, UL/C, TUV/GS, and CE. Operation is subject to the following two conditions: This device may not cause harmful interference. This device must accept any interference received, including interference that may cause undesired operation.

  • Page 4: Antenna Installation

    Front Matter Antenna Installation WARNING: It is the responsibility of the installer to insure that when using the outdoor antenna kits in the United States (or where FCC rules apply), only those antennas certified with the product are used. The use of any antenna other than those certified with the product is expressly forbidden in accordance to FCC rules CFR47 part 15.204.

  • Page 5: Table Of Contents

    TABLE OF CONTENTS 1. INTRODUCTION ...1-1 1.1 General...1-1 1.2 System Description ...1-1 1.2.1 BreezeNET DS.11 Compatibility and Standards...1-1 1.3 BreezeNET DS.11 Functional Description...1-2 1.4 How to Use This Guide ...1-4 2. INSTALLATION...2-1 2.1 Quick Start to Wireless Networking...2-1 2.2 Packing List ...2-2 2.3 Other Items Required for Installation ...2-2...
  • Page 6 Table of Contents 2.6.12 Precautions...2-12 2.6.13 Lightning Protection ...2-12 2.7 Installing the Outdoor Unit ...2-13 2.7.1 Connecting the Ground and Antenna Cables...2-15 2.7.2 Connecting the Indoor-to-Outdoor Cable ...2-16 2.8 Installing the Indoor Unit...2-17 2.8.1 Antenna Alignment ...2-19 2.8.2 Verifying Correct Operation of the Indoor Unit ...2-20 2.8.3 Verifying Correct Operation of the Outdoor Unit ...2-21 2.8.4 Resetting the SNMP Community Strings ...2-22 2.8.5 Reloading Factory Default Settings ...2-22...
  • Page 7 3.3.6 Station Control Tab...3-21 3.3.7 Security Tab ...3-22 3.3.8 Advanced Tab ...3-24 3.3.9 Trap Monitor Tab...3-25 3.3.10 Debug Info ...3-26 4. SYSTEM TROUBLESHOOTING...4-1 4.1 Troubleshooting Guide ...4-1 5. SOFTWARE DOWNLOAD PROCEDURE...5-1 6. INSTALLING ACCESSORIES ...6-1 6.1 RFS 122 Radio Frequency Splitter ...6-1 7.
  • Page 8 Table of Contents APPENDIX A. PREPARING THE INDOOR TO OUTDOOR CABLE ...A-1 APPENDIX B. RADIO SIGNAL PROPAGATION ...B-1 A.1 Radio Signal Propagation ... B-1 A.1.1 Introduction ... B-1 A.1.2 RF Terms and Definitions... B-2 APPENDIX C. DS.11 FAQ ...C-1 User's Guide viii BreezeNET BU-DS.11/RB-DS.11...
  • Page 9 TABLE OF FIGURES Figure 1-1. DS.11 Outdoor Application ...1-2 Figure 2-1. General Installation Scheme - Pole Mounting ...2-4 Figure 2-2. Holes/Grooves/Screw Holes ...2-13 Figure 2-3. Pole Mounting Installation Using the Supplied Brackets ...2-14 Figure 2-4. Outdoor Radio Unit Bottom Panel...2-15 Figure 2-5.
  • Page 10 Table of Contents Figure 3-17. Trap Monitor Tab...3-25 Figure 7-1. Ethernet Connector Pin Assignments...1 Figure A-1. A Typical Radio System...A-1 Figure A-2. Attenuation of an RF signal ...A-2 Figure A-3. Side View ...A-4 Figure A-4. Top View...A-5 Figure A-5. Radiation Pattern of Directional Antenna...A-5 Figure A-6.
  • Page 11 TABLE OF TABLES Table 2-1. Regulatory Domains Specifications ...2-5 Table 2-2. FCC Available Antennas (USA) ...2-11 Table 2-3. ETSI Available Antennas (Europe and Rest-of-World)...2-11 Table 2-4. Indoor Unit LEDs ...2-20 Table 2-5: Outdoor Unit LEDs ...2-21 Table 3-1. Frequency Selection List ...3-20 Table 4-1.

  • Page 13: Introduction

    DS (Direct Sequence) WLAN. 1.2 System Description The BreezeNET DS.11 Wireless Base Unit and Wireless Remote Bridge are designed to provide long range point-to-multipoint links for outdoor applications. The products use direct sequence, spread spectrum radio technology operating at a frequency of 2.4 –...

  • Page 14: Breezenet Ds.11 Functional Description

    Introduction 1.3 BreezeNET DS.11 Functional Description The BreezeNET BU-DS.11 and RB-DS.11 can be used as a high speed connection between two remote networks. BU-DS.11 Wireless Base Unit The BU-DS.11 is an IEEE 802.11b compliant base station bridge that is used to connect either a single remote site or multiple remote sites to a central server or Internet connection.
  • Page 15 RB-DS.11 Wireless Bridge The RB-DS.11 connects a remote Ethernet network to a BU-DS.11 Multipoint Base Unit bridge located at a central server or Internet site. It can handle up to 1024 MAC addresses from the LAN side. The maximum number of MAC addresses that the unit can handle at any specific time is 1024.

  • Page 16: How To Use This Guide

    Chapter 2: Installation - Describes how to install the units. Chapter 3: Using the DS.11 Configuration utility - Describes how to use the DS.11 Configuration utility to setup, configure, and manage BreezeNET DS.11 series units. Chapter 4: System Troubleshooting - Contains a troubleshooting guide for some of the more common problems which may occur when installing and using the BreezeNET DS.11 products.

  • Page 17: Installation

    If not, refer to Section 3.1.1 for further information on assigning IP addresses. 3. Use the BreezeNET DS.11 Configuration utility, described in Chapter 3 of this manual, to configure the network settings to reflect your configuration.

  • Page 18: Packing List

    Installation 2.2 Packing List When you first open the package, verify that the unit is complete with the following components: Indoor unit Outdoor unit (includes integrated antenna or antenna connectors for optional connection to external antennas) Sun cover with screws (with DS.11D units only) Pole mounting kit for the Outdoor unit (includes two brackets and four sets of screws, nuts and washers) 110/220 VAC Power Cord (may be open-ended, depending on destination...

  • Page 19: Installation Overview

    2.4 Installation Overview Note: Outdoor units and antennas should be installed ONLY by experienced installation professionals who are familiar with local building and safety codes and, wherever applicable, are licensed by the appropriate government regulatory authorities. Failure to do so may void the BreezeCOM product warranty and may expose the end user or the service provider to legal and financial liabilities.

  • Page 20: Figure 2-1. General Installation Scheme - Pole Mounting

    Installation A n te n n a Antenna (B U -D S 11 D (BU-DS.11D and a n d RB-DS.11D units only) R D -D S 11 D u n its o n ly ) O u td o o r U n it G ro u n d C a b le to G ro u n d in g P o in t Figure 2-1.

  • Page 21: Guidelines For Placement Of Bu-Ds.11 Units

    2.5 Guidelines for Placement of BU-DS.11 Units Each Wireless Base Unit in the network forms the center of a cell, or BSS. Neighboring BU-DS.11 units should preferably send and receive on different channels for maximum throughput. Creating a cell plan for your site can be complicated, and is usually done by experts equipped with special measuring equipment.

  • Page 22: Outdoor Installation Considerations

    Installation 2.6 Outdoor Installation Considerations This chapter describes various considerations to take into account when planning an outdoor installation including site selection, antenna alignment, antenna polarization, antenna seal, and cell size. Refer to Appendix B for further information. 2.6.1 Co-locating DS.11 Outdoor Units Up to 3 BU-DS.11 units (the exact number depends on the regulatory domain) can be co-located on the same building top or tower for best performance.
  • Page 23 Physical Obstacles Any physical object in the path between two bridges can cause signal attenuation. Common obstructions are buildings and trees. Any buildings or other physical structure such as trees, mountains or other natural geographic features higher than the antenna and situated in the path between the two sites can constitute obstructions.

  • Page 24: Rooftop Installation

    Fewer obstacles in path. Improved performance due to greater height. Reduced multipath problems. 2.6.4 Antennas for Outdoor Applications BreezeNET DS.11 series can be used in point-to-point or point-to-multipoint configurations. Point-to-Point The BU-DS.11/RB-DS.11 must be equipped with one or two directional antennas, depending on the application and the need to avoid multipath.

  • Page 25: Antenna Diversity

    2.6.5 Antenna Diversity In applications where no multipath propagation is expected, a single antenna is sufficient for good performance levels. However, in cases where multipath propagation exists BreezeCOM recommends using two antennas in order to utilize the space diversity feature. By using two antennas per unit, the system can select the best antenna on a per-packet basis (every several milliseconds).

  • Page 26: Link Distance

    Installation is up to 6 miles (10Km) where ETSI is the regulatory domain and 15 Miles (25 Km) where FCC is the regulatory domain. 2.6.9 Link Distance For open outdoor areas with an unobstructed line of sight between the BU-DS.11 and the RB-DS.11, the suggested maximum distance is: Up to 24Km (15 miles) in the USA Note:...

  • Page 27: Available Antennas

    2.6.11 Available Antennas Table 2-2 and Table 2-3 list several transmit/receive antennas that work well with BreezeNET DS.11 units. The cable length should be minimized in order to gain maximum link budget. Model OMNI-8 UNI-16P UNI-24 Table 2-3. ETSI Available Antennas (Europe and Rest-of-World) Model UNI-8 UNI-18...

  • Page 28: Precautions

    Installation 2.6.12 Precautions Note: Detached antennas, whether installed indoors or out, should be installed ONLY by experienced antenna installation professionals who are familiar with local building and safety codes and, wherever applicable, are licensed by the appropriate government regulatory authorities. Failure to do so may void the BreezeNET Product Warranty and may expose the end user to legal and financial liabilities.

  • Page 29: Installing The Outdoor Unit

    2.7 Installing the Outdoor Unit The outdoor unit can be secured to the pole using one of the following options: Special brackets sets (supplied with each unit). There are two pairs of screw holes on the units, allowing the use of the brackets with various pole widths. U-bolts - size A (inner installation holes, up to 2"...

  • Page 30: Figure 2-3. Pole Mounting Installation Using The Supplied Brackets

    Installation Figure 2-3. Pole Mounting Installation Using the Supplied Brackets Note: When inserting the open-ended screws, make sure to insert them with the grooves pointing outwards; these grooves are intended to allow fastening of the screws with a screwdriver. User's Guide 2-14 BreezeNET BU-DS.11/RB-DS.11...

  • Page 31: Connecting The Ground And Antenna Cables

    2.7.1 Connecting the Ground and Antenna Cables The Ground terminal (marked unit, shown in Figure 2-4. The Antenna RF connectors (marked respectively) are located on the top panel of the DS.11D Outdoor unit. 1. Connect one end of the grounding cable to the Ground terminal and connect the other end to a good ground connection.

  • Page 32: Connecting The Indoor-To-Outdoor Cable

    Installation 2.7.2 Connecting the Indoor-to-Outdoor Cable 1. Remove the two screws holding the waterproof seal assembly to the Outdoor unit and remove the waterproof seal. 2. Unscrew the top nut from the waterproof seal. Figure 2-5. Routing the Indoor-to-Outdoor Cable through the Waterproof Seal 3.

  • Page 33: Installing The Indoor Unit

    2.8 Installing the Indoor Unit According to the specific conditions of the installation, route the Indoor-to-Outdoor cable into the building so that it conveniently reaches the Indoor unit to ensure minimal interference, leaving some spare. The cable is supplied open ended, to allow for conveniently threading it into the building through a hole that is as small as possible.

  • Page 34: Figure 2-7. Indoor Unit Rear Panel

    Installation Note: If the power cord supplied with the unit is open ended, connect to it a power plug appropriate to the country in which the unit is being installed. The color codes of the cable are: The operating AC mains voltage of the Indoor unit is marked on the rear panel of the unit.

  • Page 35: Antenna Alignment

    5. Connect the 10-BaseT connector to the network. The cable connection should be straight Ethernet when connecting the Indoor unit to a Hub, and a crossed cable when connecting it directly to a PC Network Interface Card (NIC). Note: The length of the Ethernet cable connecting the Indoor unit to the user's equipment, together with the length of the Indoor-to-Outdoor cable, should not exceed 90 meters.

  • Page 36: Verifying Correct Operation Of The Indoor Unit

    Installation 2.8.2 Verifying Correct Operation of the Indoor Unit To verify proper operation, view the LED indicators located on the front panel of the outdoor unit as shown in Figure 2-8, and as described in Table 2-4. Name POWER Power indication LINK Self Test and Remote Ethernet Link...

  • Page 37: Verifying Correct Operation Of The Outdoor Unit

    2.8.3 Verifying Correct Operation of the Outdoor Unit To verify proper operation, view the LED indicators located on the bottom panel of the outdoor unit as shown in Figure 2-4. Table 2-5 lists the various LED states. Name WLAN Wireless Link Indicator Self Test and Power Power...

  • Page 38: Resetting The Snmp Community Strings

    Installation 2.8.4 Resetting the SNMP Community Strings The SNMP Read/Write Community strings are an SNMP security feature to restrict management access from unauthorized persons. Refer to Section 3.1.2 To reset the SNMP community strings, insert a paper clip or another suitable tool and press the Reset button while the unit is operating.

  • Page 39: Connecting The Unit To The Ethernet Port

    2.8.6 Connecting the Unit to the Ethernet Port Connect one end of a an Ethernet 10BaseT cable (not supplied) to the RJ-45 port on the front panel of the Indoor unit. Use a straight cable to connect to a Hub; use a crossed cable to connect to the PC’s Network Interface Card (NIC).

  • Page 41: The Ds.11 Configuration Utility

    The system administrator can use the DS.11 Configuration utility to control a large number of DS.11 units from a single location. The configuration utility can be used to manage all members of the BreezeNET DS.11 family including the WBS, WBC, AP-DS.11 and SA-DS.11. The description in this manual, however, is limited to management and configuration of outdoor bridges.

  • Page 42: Ds.11 Configuration Utility Main Window

    The DS.11 Configuration Utility 3.1 DS.11 Configuration Utility Main Window The Control Window section - In this section, you can perform the following: View the DS.11 units that have been discovered by their IP address Select the IP address of the unit you wish to manage Assign unit IP addresses Set the Configuration utility access rights Set the SNMP Community information...

  • Page 43: Selecting Units

    Click here to enlarge IP display area Figure 3-1. DS.11 Configuration Utility Main Window (Station Control Tab) 3.1.1 Selecting Units You can select a unit to manage in one of the following ways: Click the the selected community) are displayed in the list box underneath the button. Click on an address to select the corresponding unit for viewing and configuration.

  • Page 44: Setting The Snmp Community Information

    The DS.11 Configuration Utility 3.1.2 Setting the SNMP Community Information Type the known Read/Write Community string in the Community field (the default string is button to confirm. 3.1.3 Assigning and Editing IP Addresses Manually 1. Click the 2. Type the parameters in the appropriate fields and click OK; the MAC address is written on the bottom label of the Indoor unit and on the Outdoor unit.

  • Page 45: Application Control Buttons

    Notes: In order to see the unit after assigning the IP address, the PC with the Configuration utility should be on the same IP subnet as the assigned IP address. Units receive and auto IP address if there is no DHCP server and the unit is configured to work in the Smart mode as described in Section 3.3.2.

  • Page 46: Configuration Utility Modes

    The DS.11 Configuration Utility 3.2 Configuration Utility Modes There are several DS.11 Configuration utility modes of operation; these options are chosen via the Options menu in the configuration utility main window (shown below). The selected option(s) is indicated by a check mark next to the option in the menu.

  • Page 47: Firmware Upgrade

    3.2.1 Firmware Upgrade This mode of operation allows upgrading the embedded software in managed units. When you select this mode from the mode menu, the following dialog box is displayed. Note: The Configuration utility does not resolve the topology of the cell. Therefore, firmware upgrades should be made from the central point where the BUs are located.

  • Page 48: Figure 3-4. Advanced Tftp Setup

    The DS.11 Configuration Utility 4. Click download. The Advanced TFTP Setup window enables you to tune the TFTP session parameters for a efficient firmware upgrade, depending on your actual deployment. Packet timeout - defines the time (in seconds) for a timeout to be determined of a specific packet that is sent.

  • Page 49: Figure 3-5. Firmware Upgrade Process

    The DS.11 Configuration Utility 5. Click to initiate the firmware upgrade; progress bars are displayed indicating the progress of the operation. If both types of BU-DS.11 and RB-DS.11 devices are selected, the program will upgrade RB-DS.11 units first. At the end of the upgrade session, the following window is displayed indicating that the operation was successful.

  • Page 50: Multiple Unit Configuration

    The DS.11 Configuration Utility 3.2.2 Multiple Unit Configuration This feature allows downloading configuration parameters to multiple unit simultaneously. When you select this option in the Options menu, all configuration windows become write-only (with some of the parameters grayed out if not relevant).

  • Page 51: Utility Configuration Windows

    3.3 Utility Configuration Windows 3.3.1 Station Status Tab The Station Status tab displays general information regarding the unit's firmware and hardware versions, and general unit address information. System Name - The name of the selected unit. Location - A user-defined 28 ASCII characters description of the location of the selected unit (optional).

  • Page 52: Ip Parameters Tab

    The DS.11 Configuration Utility 3.3.2 IP Parameters Tab The IP parameters tab allows you to define or edit the IP parameters of units. IP Address - The IP address of the selected unit. Subnet mask -The Subnet mask of the selected unit. Default gateway - The default gateway of the selected unit.

  • Page 53: Snmp Parameters Tab

    3.3.3 SNMP Parameters Tab The SNMP parameters tab allows you to define or edit the SNMP community strings and the SNMP-related parameters. Read - The read only community string of the unit. Default is public. Read/Write - The read/write community string of the unit. Default is private.

  • Page 54: Counters Tab

    The DS.11 Configuration Utility 3.3.4 Counters Tab User's Guide Figure 3-10. Counters Tab (BU Units) Figure 3-11. Counters Tab (RB Units) 3-14 BreezeNET BU-DS.11/RB-DS.11...
  • Page 55 Using the Counters windows, you can view a wide range of performance data at both sides of the link. For RB units, you can monitor the received signal strength through the RSSI (Received Signal Strength Indication) bar indicator at the bottom of the window.

  • Page 56: Resetting Counters

    The DS.11 Configuration Utility 3.3.4.1 Resetting Counters You can reset the counters displayed in the Counters tab by clicking the button. All displayed values are reset to display zero. Note that this action does not reset the counters stored in the actual unit, but just resets the values displayed in the screen (an exception to this are the link-specific counters described in the next section).

  • Page 57: Wlan Parameters Tab

    3.3.5 WLAN Parameters Tab The WLAN parameters tab allows you to define or edit parameters related to the Wireless LAN environment in which the selected unit is operating. The window displayed varies depending on the type of unit selected. BreezeNET BU-DS.11/RB-DS.11 Figure 3-12.

  • Page 58: Figure 3-13. Wlan Parameters Tab (Rb Units)

    The DS.11 Configuration Utility Regulatory Domain - This read only field displays the regulatory authorities in the relevant country of use (e.g., Canada, ETSI, FCC, Japan). Power - This read only field displays the current output power level at the antenna port configured.
  • Page 59 The DS.11 Configuration Utility Range - Select the operative range of your WLAN or Wireless Link in the drop down list. This parameter affects the acknowledge delay time which needs to be increased in long links. The default value is up to 5 KM. Channel - The method of channel selection varies, depending on the type of unit.

  • Page 60: Table 3-1. Frequency Selection List

    The DS.11 Configuration Utility Note: The frequencies listed in the table are at the center of the channel. Each channel occupies 22MHz, therefore each channel occupies -11MHz to +11 MHz from the frequency specified. User's Guide Table 3-1. Frequency Selection List Channel Frequency Selection...

  • Page 61: Station Control Tab

    3.3.6 Station Control Tab Station Control- This option reverts system parameters back to original factory default settings. Click the Reset Unit - Click the made to the system parameters. Export - Click the unit to a file. A popup window is displayed prompting you to specify the name of the file.

  • Page 62: Security Tab

    Wired Equivalent Privacy (WEP) is an authentication algorithm which protects authorized Wireless LAN users against eavesdropping, and is implemented in BreezeNET DS.11 units. The definition of WEP is defined in the IEEE 802.11b standard. The encryption is applicable for both authentication and data.
  • Page 63 The DS.11 Configuration Utility If you selected the Shared Key algorithm, proceed to set the following parameters: Default Key ID – Sets the default key for encryption in the Authentication process. This is the encryption key that will be used for transmissions between the RB-DS.11 and the BU-DS.11.

  • Page 64: Advanced Tab

    The DS.11 Configuration Utility 3.3.8 Advanced Tab The Advanced tab provides additional performance information. CW Min/Max - Select the contention window size. The contention window backoff algorithm is a well known method used to resolve contention between different stations wanting to access the medium. More information on the considerations for setting this parameter can be found in the DS.11 FAQ in Appendix B.

  • Page 65: Trap Monitor Tab

    Long Retry Limit - This attribute indicates the maximum number of transmission attempts of a frame, the length of which is greater than RTS Threshold, that shall be made before a failure condition is indicated. The default value is 4. Basic Rate - –...

  • Page 66: Debug Info

    The DS.11 Configuration Utility When an event occurs, a trap is sent to the defined host address (the setting is made in the SNMP Parameters tab described in Section 3.3.3). This window displays the recorded traps. Click the 3.3.10 Debug Info This option allows you to create a log file named BreezeLog.log.

  • Page 67: System Troubleshooting

    The following troubleshooting guide provides answers to some of the more common problems which may occur when installing and using the BreezeNET DS.11. If problems not mentioned in this guide should arise, checking the Ethernet and WLAN counters may help (see Section 3.3.4). If the problem persists, please feel free to contact your local distributor or the BreezeCOM Technical Support Department.
  • Page 68 System Troubleshooting Problem and Indication Failure to establish 1. Power supply to units wireless link (“D” may be faulty. models/external 2. Cables may be antennas) improperly connected 3. There may be some problem with antenna installation. Wireless link 1. Ethernet hub port or established, but there is UTP cable is faulty.

  • Page 69: Software Download Procedure

    5. SOFTWARE DOWNLOAD PROCEDURE 1. Set the unit's IP address, using the DS.11 Configuration utility, and verify that the PC's IP address belongs to the same Subnet Mask as the unit. 2. Ping the unit's IP address. Make sure that the Ping replies are being received. 3.

  • Page 71: Installing Accessories

    These signals are then sent to two different and independent antennas. The RFS 122 enables radio transmission using two directional antennas connected to the same port of the BreezeNET DS.11 unit. Similarly, the splitter is used to combine two receiving antennas to one antenna connector.

  • Page 73: Technical Specifications

    7. TECHNICAL SPECIFICATIONS 7.1 Supported Standards Compliant with ETS 300 328 and ETS 300 826 (CE marked) IEEE 802.11b HR (high rate) standard for Wireless LAN at 11 and 5.5 Mbps IEEE 802.11b standard for 1 and 2 Mbps Most of the major networking protocols (including IP, IPX) 7.2 Power Specifications Power Supply Input (via Indoor unit)

  • Page 74: Radio Specifications

    Technical Specifications 7.4 Radio Specifications Type Range Transmit power Frequency range Number of channels 7.5 Sensitivity @ 1Mbps @ 2Mbps @ 5.5Mbps @ 11Mbps 7.6 Configuration and Management Configuration and setup Site survey LED indicators SNMP management User's Guide Direct sequence spread spectrum Europe/ETSI: 10Km USA/FCC: 24Km (15 miles)

  • Page 75: Specific Features

    7.7 Specific Features Data rate Utility Software 7.8 Size Dimensions 7.9 Environmental Operating temperature (ambient) Storage temperature Operating humidity Storage humidity BreezeNET BU-DS.11/RB-DS.11 11 Mbps 5.5 Mbps 2 Mbps 1Mbps BreezeNET Configuration utility, runs on Windows 95, 98, 2000 and Windows NT DS.11 outdoor unit : 30cm x 30cm x 7.2cm (incl.

  • Page 76: Flat Panel Directional Antenna

    Technical Specifications 7.10 Flat Panel Directional Antenna 7.10.1 Electrical Frequency Gain VSWR 3 dB Beamwidth Polarization Power Input Impedance Front-to-Back 7.10.2 Mechanical Dimensions Weight Connector Radome Baseplate User's Guide 2.4 – 2.48 GHz 15.5 dBi minimum 1.5 to 1 maximum 20°...

  • Page 77: Environmental

    7.10.3 Environmental Operating Temperature Vibration Shock Wind load Humidity Salt fog Ice loading Solar radiation Service life Lightning protection BreezeNET BU-DS.11/RB-DS.11 Technical Specifications -40 ° C to + 71 ° C including solar radiation ETS 300 019-1-4 (Feb.92),class 4.1 Sweep rate =0.1 octave/min; 10 cycles ETS 300 019-2-2,Table 7 EN 302-085,Table A.1,Table A.2 (heavy duty) ETS 300 019-1-4 EN 302 085 (Annex A.1.1)

  • Page 79: Appendix A. Preparing The Indoor To Outdoor Cable

    APPENDIX A. PREPARING THE INDOOR TO OUTDOOR CABLE The Indoor-to-Outdoor cable provides pin-to-pin connection on both sides. It is supplied open-ended at both sides, to allow the installer to conveniently route the cable into the waterproof seal off the Outdoor unit and through holes in walls. Figure 7-1 shows the wire pair connections required for the Indoor-to-Outdoor cable.

  • Page 81: Appendix B. Radio Signal Propagation

    APPENDIX B. RADIO SIGNAL PROPAGATION B.1 Radio Signal Propagation B.1.1 Introduction This section explains and simplifies many of the terms relating to antennas and RF (Radio Frequency) used when dealing with an RF installation system. The following diagram depicts a typical radio system: A radio system transmits information to the transmitter.

  • Page 82: Rf Terms And Definitions

    Appendix B. Radio Signal Propagation B.1.2 RF Terms and Definitions The dB convention is an abbreviation for decibels. It shows the relationship between two values. RF Power Level RF power level at either the transmitter output or the receiver input is expressed in Watts.
  • Page 83 For example: If, due to attenuation, half the power is lost (P attenuation in dB is -10 x Log (1/2) = 3 Path Loss Loss of power of an RF signal traveling (propagating) through space. It is expressed in dB. Path loss depends on: The distance between transmitting and receiving antennas Line of sight clearance between the receiving and transmitting antennas Antenna height...
  • Page 84 Appendix B. Radio Signal Propagation Antenna Characteristics Isotropic Antenna A hypothetical antenna having equal radiation intensity in all directions. Used as a zero dB gain reference in directivity calculation (gain). Antenna Gain A measure of directivity. It is defined as the ratio of the radiation intensity in a given direction to the radiation intensity that would be obtained if the power accepted by the antenna was radiated equally in all directions (isotropically).
  • Page 85 Appendix B. Radio Signal Propagation Figure A-4. Top View Directional Antenna Radiates and receives most of the signal power in one direction. The following diagram shows the radiation pattern of a directional antenna with its side lobes in polar form: Figure A-5.
  • Page 86 Appendix B. Radio Signal Propagation System Characteristics Receiver Sensitivity The minimum RF signal power level required at the input of a receiver for certain performance (e.g. BER). EIRP (Effective Isotropic Radiated Power) The antenna transmitted power. Equal to the transmitted output power minus cable loss plus the transmitting antenna gain.
  • Page 87 Appendix B. Radio Signal Propagation Example: Link Parameters: Frequency: 2.4 GHz = 4 dBm (2.5 mW) Tx and Rx cable length (Ct and Cr) = 10 m. cable type RG214 (0.6 dB/meter) Tx and Rx antenna gain (Gt and Gr) = 18 dBi Distance between sites = 3 Km Receiver sensitivity (Ps) = -84 dBm Link Budget Calculation...
  • Page 88 Appendix B. Radio Signal Propagation Bad Line of Sight An optical line of sight exists if an imaginary straight line can connect the antennas on either side of the link. Radio wave clear line of sight exists if a certain area around the optical line of sight (Fresnel zone) is clear of obstacles.
  • Page 89 Appendix B. Radio Signal Propagation The Line of Sight Concept An optical line of sight exists if an imaginary straight line can be drawn connecting the antennas on either side of the link. Clear Line of Sight A clear line of sight exists when no physical objects obstruct viewing one antenna from the location of the other antenna.
  • Page 90 Appendix B. Radio Signal Propagation When at least 80% of the first Fresnel Zone is clear of obstacles, propagation loss is equivalent to that of free space. User's Guide Figure A-8. Fresnel Zone Clear of Obstacles A-10 BreezeNET BU-DS.11/RB-DS.11...

  • Page 91: Appendix C. Ds.11 Faq

    APPENDIX C. DS.11 FAQ How many BU-DS.11 or RB-DS.11 units can be co-located on the same building top or tower? You can co-locate up to 3 BU-DS.11 or RB-DS.11 units on the same structure. Each unit is assigned to one of the non-overlapping channels, 1, 6, or 11. What is the antenna separation requirement for co-locating same building top or tower? The antennas should be mounted at least 2 feet apart when using UNI-16’s, 15 feet...
  • Page 92 Appendix C. DS.11 FAQ Why are there 11 channels and only 3 usable? The IEEE802.11b specification calls out 11 selectable channels (USA) between 2414MHz and 2462MHz. Because of the transmission bandwidth of the DS modulation, only 3 channels are non-overlapping. Those are channels 1, 6, and 11, therefore, only 3 systems may be co-located.
  • Page 93 Can I downgrade my DS.11 firmware? Yes, an earlier version of firmware can overwrite a newer version. Can I keep the previous version of firmware? No and yes. The previous version of firmware can not be kept on the DS.11 itself, but can be stored on your PC and loaded if needed.
  • Page 94 Appendix C. DS.11 FAQ What is the maximum number of networked PCs the BU-DS.11/RB-DS.11 can learn? 1024 network MAC addresses can be learned by the BU-DS.11/RB-DS.11 from the LAN side. Can the BU-DS.11/RB-DS.11 be used for multi-point as well as point to point links? Yes.
  • Page 95 Can I use the same accessories on my DS.11 as on my PRO.11? No, not all accessories are compatible with the DS.11 For example, the TPA (Transmit Power Amplifier), LNA (Low Noise Receive Amplifier) and BDS (Bi- Directional Amplifier) which are all compatible with the PRO.11 can not be used with the DS.11.
  • Page 96 Appendix C. DS.11 FAQ What is the normal PER (packet error rate) for the BU-DS.11/RB-DS.11? The error rate will be about 4%-6% (transmitted fragments vs. retry count). This is typical when operating in a non-interference environment at maximum range for bi-directional traffic loads.
  • Page 97 What is the best value for the CW win parameter on the DS.11? Setting the CW win parameter to 31 for heavy bi-directional traffic loads will minimize the PER. Setting the CW win to 15 will improve performance for more uni-directional traffic loads.

This manual is also suitable for:

Breezenet rb-ds.11Breezenet bu-ds.11

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