Alvarion BU-DS.11, RB-DS.11 System Characteristics

BreezeNET DS.11 Series User Manual

C-4

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 C-5: Radiation Pattern of Directional Antenna

Antenna Beamwidth

The directiveness of a directional antenna. Defined as the angle between two half-

power (-3 dB) points on either side of the main lobe of radiation.

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.

Pout - Output power transmitted in dBm

Ct - Transmitter cable attenuation in dB

Gt - Transmitting antenna gain in dBi

Gr - Receiving antenna gain in dBi

Pl - Path loss in dB

Cr - Receiver cable attenuation in dB

Si - Received power level at receiver input in dBm

Ps - Receiver sensitivity in dBm

Si = Pout - Ct + Gt - Pl + Gr - Cr

EIRP = Pout - Ct + Gt

Contents

Main Page iii Trade Names Statement of Conditions Warranties; Disclaimers Exclusive Warranty iv Disclaimer v Limitation of Liability Electronic Emission Notices FCC Radio Frequency Interference Statement vi FCC Radiation Exposure Statement Antenna Installation vii Important Notice viii Contacting Alvarion Technical Support www.alvarion.com/support.htm User Manual Table of Contents Introduction 1-1 Installation 2-1 The DS.11 Configuration Utility 3-1 Configuration Guidelines 4-1 System Troubleshooting 5-1 Technical Specifications 6-1 DS.11 FAQ A-1 Preparing the Indoor to Outdoor Cable 1 Radio Signal Propagation 1 Table of Figures Table of Tables 1-1 Chapter 1 1-2 Scope of the Manual 1-3 System Description Functional Description BU-DS.11 Wireless Base Unit 1-4 RB-DS.11 Wireless Bridge BreezeNET DS.11 Compatibility and Standards 2-1 Chapter 2 2-2 Packing List Additional Installation Requirements Installation Overview 2-4 2-5 Outdoor Installation Considerations Collocating DS.11 Outdoor Units Site Selection Factors Path of Clearest Propagation Physical Obstacles Rooftop Installation Antennas for Outdoor Applications The Point-to-Point Point-to-Multipoint Antenna Seal Cell Size/Link Distance Using Outdoor Range Tables Available Antennas Precautions Compliance with Radio Regulations 2-9 Installing the Outdoor Unit 2-10 2-11 Connecting the Ground and Antenna Cables 1. 2. Connecting the Indoor-to-Outdoor Cable Page 2-13 Installing the Indoor Unit 1. 2. 3. 4. Configuring Parameters Antenna Alignment 1. 2. 2-15 Verifying Correct Operation Verifying Correct Operation of the Indoor Unit Table 2-2: Indoor Unit LEDs Verifying Correct Operation of the Outdoor Unit 2-16 What to do if the Self Test Fails 3-1 Chapter 3 3-2 Installing and Accessing the Configuration Utility 1. 2. 3. 4. Configuration Utility Modes Unit Configuration Mode Control Window Tabs Section 3-4 Control Window Selecting Units Setting the SNMP Community String Assigning and Editing IP Addresses Manually (based on MAC addresses) 1. Application Control Buttons Configuration Utility Tabs Station Status Tab 3-6 Networking Parameters Tab Networking Parameters-General Tab IP Parameters 3-7 DHCP VLAN Support 3-8 3-9 Networking Parameters-CPE Table Tab (BU only) 3-10 3-11 SNMP Parameters Tab 3-12 Counters Tab 3-13 3-14 WLAN Parameters Tab 3-15 3-16 Table 3-1: Regulatory Domains Specifications Table 3-2: Frequency List 3-17 Station Control Tab 3-18 Security Tab Encryption Tab 3-19 3-20 ACL Table Tab (BU only) 3-21 Advanced Tab 3-22 3-23 General Parameters Tab 3-24 3-25 3-26 Auto-Config Tab 3-27 Trap Monitor Tab 3-28 Firmware Upgrade Mode 1. 2. 3. Advanced TFTP Settings 3-30 Multiple Unit Configuration Mode 3-31 Resetting the SNMP Community Strings Reloading Factory Default Settings 1. 2. Page 4-1 Chapter 4 4-2 Configuring Critical Parameters One-Click Configuration Short Preamble CW Minimum 4-3 RTS Threshold Basic Rate Range Page 5-1 Chapter 5 5-2 Troubleshooting Guide 6-1 Chapter 6 Supported Standards Configuration and Management 6-2 Radio Range Security Page Page A-1 Appendix A A-2 General A-3 A-4 Collocation and Interference A-5 Firmware A-6 Configuration A-7 Accessories A-8 Management B-1 Appendix B 1. 2. Page C-1 Appendix C RF Terms and Definitions dB RF Power Level C-2 Attenuation P For example: If, due to attenuation, half the power is lost (P Path Loss Free Space Loss Antenna Characteristics C-4 Directional Antenna Antenna Beamwidth System Characteristics Receiver Sensitivity EIRP (Effective Isotropic Radiated Power) Si = P C-5 Link Parameters Link Budget Calculation Signal Fading C-6 The Line of Sight Concept Clear Line of Sight Fresnel Zone R = :