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Appendix A. Radio Signal Propagation

BreezeNET DS.11 Series

A-1

User’s Guide

1. INTRODUCTION

This chapter describes the main features of the BreezeNET DS.11 Wireless LAN,
which includes the following products:

 

AP-DS.11 - Wireless Base Station

 

SA-DS.11 - Wireless Bridge Client

Also in this chapter: relevant standards, compatibility issues, product functionality
and use of the DS (Direct Sequence) WLAN.

1.1  How to Use This Guide

This User's Manual contains instructions for overall planning and setting up your
wireless LAN, and provides details of how to install each unit, and how to install
antennas and accessories.

This manual contains the following chapters:

 

Chapter 1 Introduction 

– Explains how to use this manual and presents the

BreezeNET DS.11 series.

 

Chapter 2 Installation

 – Describes how to install the BreezeNET DS.11 series

units.

 

Chapter 3 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.

 

Chapter 4 Using the BreezeNET Management Utility

 – Describes how to

use the BreezeNET Management utility to setup, configure, and manage
BreezeNET DS.11 series units.

 

Chapter 5 Downloading Software Upgrades 

– Explains how to perform

future upgrades for BreezeNET DS.11 series units using a TFTP application.

Summary of Contents for AP-DS.11

Page 1: ...BreezeNET DS 11 Series AP DS 11 SA DS 11 User s Manual May 1999 Cat xxxxxxxx Rev A...

Page 2: ...en 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 Trade Names BreezeNET and BreezeLINK are t...

Page 3: ...Company shall pay shipping charges to return the product to the buyer The Company warrants that the firmware designed by it for use with the unit will execute its programming instructions when properl...

Page 4: ...n outdoor antennas 6dBi 30cm 12 inches Professional Installer Antennas WARNING It is the responsibility of the installer to ensure that when using the outdoor antenna kits in the United States or wher...

Page 5: ...es and buildings Distance between devices Configuration statistic counters and error messages as seen on the monitor Description of problems encountered To contact BreezeCOM Technical Support refer to...

Page 6: ......

Page 7: ...11 Wireless Bridge Client 3 1 5 Where to Use DSSS 4 2 Installation 6 2 1 Checking The LED Indicators 6 2 2 The Rear Panel 7 1 1 Indoor Installation considerations 8 1 1 1 Site Selection Factors 8 1 1...

Page 8: ...ation Control Tab 24 4 1 8 The Log Tab 25 4 1 9 Debug Info 26 4 2 Quick Start to Wireless Networking 26 4 3 More about Cells 27 5 Software DownLoad Procedure 28 6 Technical specifications 29 6 1 Suppo...

Page 9: ......

Page 10: ...ure 4 6 Counters Tab 23 Figure 4 7 The Station Control Tab 24 Figure 4 8 Log Tab 25 Figure A 1 A Typical Radio System A Error Bookmark not defined Figure A 2 Attenuation of an RF signal A Error Bookma...

Page 11: ...l each unit and how to install antennas and accessories This manual contains the following chapters Chapter 1 Introduction Explains how to use this manual and presents the BreezeNET DS 11 series Chapt...

Page 12: ...via TFTP Future proof Investment All infrastructure items in the DS 11 series line offer Flash updates Management utility This user friendly application helps you quickly setup and manage your WLAN Y...

Page 13: ...are wired to a common bus When one of the stations sends a message it assigns a destination address to the message and sends the message on the bus All stations on the bus hear the message but only th...

Page 14: ...or each transmission This provides the DS 11 with a fast bit rate and long range links ideal for outdoor bridging By using a directional antennas spatial separation and cross polarized discrimination...

Page 15: ...io Signal Propagation BreezeNET DS 11 Series A 5 User s Guide DSSS WBS DS 11 WBC DS 11 AP DS 11 AP DS 11 DSSS DSSS SA DS 11 SA DS 11 SA DS 11 Figure 1 1 A Typical DS 11 installation with indoor and ou...

Page 16: ...e AP SA accordingly 2 Make sure the antennas are in a vertical position if not rotate over 90 degrees 3 Insert the power connector 4 Attach the Unshielded Twisted Pair UTP cable to the Wireless Base S...

Page 17: ...ronized Power Firmware Status Red Firmware did not start Power fault or wrong firmware Backbone Traffic Red No network connection detected Check that the right cable is connected properly crossed or n...

Page 18: ...ection antenna diversity antenna polarization construction materials and cell size Figure 0 1 BreezeNET LAN in a typical office environment 1 1 1 Site Selection Factors BreezeNET DS 11 wireless LAN pr...

Page 19: ...the external antennas and RF cable Heat Sources Keep the units well away from sources of heat such as radiators air conditioners etc 1 1 1 1 Site Selection for Access Points When positioning Access P...

Page 20: ...le In the USA FCC regulated and in non regulated countries the omni 6 comes with a shorter antenna cable extending the coverage area The Uni 8 5 is also useful in indoor applications It is very small...

Page 21: ...ion of the signal is better when it is polarized vertically To verify antenna polarization refer to the assembly instructions supplied with the antenna set 1 1 3 Construction Materials A cell s covera...

Page 22: ...core 15 20dB 15 150ft 50m Floor Ceiling heavy solid core 20 25dB 10 100ft 30m Note Take stairwells and elevator shafts into consideration when positioning Access Points There is no way to quantify the...

Page 23: ...s partitioned into individual workspaces factory floor areas warehouses etc The suggested maximum distance between Access Point and workstation Standard AP DS 11 DS 11 100m 300 ft Closed Indoor Areas...

Page 24: ...ed 2 Power supply is defective 1 Verify power cord is properly connected to the BreezeNET unit and to the power outlet 2 If this is not the cause replace the power supply Failure to establish wireless...

Page 25: ...ame at both ends Verify that the range matches specifications Verify line of sight antenna alignment antenna height Wireless link established but there is no Ethernet activity AP DS 11 and SA DS 11 un...

Page 26: ...m an Access Point with a specified IP address Set the SNMP Write Community strings Verify the status of all Access Points in the network Perform a site survey Antenna selection Configuration of parame...

Page 27: ...d in the list box below Double click on an address to select it For stations which are located behind a router type the unit s address in the Locate unit field and click to display its parameters Sign...

Page 28: ...ddresses connected to that AP and their signal quality When the community is Read the parameters are grayed out disabled 4 1 2 The IP SNMP Tab All BreezeNET DS 11 units contain IP Host software This s...

Page 29: ...appear in the SNMP Communities area of the window and the unit s parameters appear in the IP Parameters area of the window Read The read only community string of the unit Read Write The read write com...

Page 30: ...firmware and hardware versions and general unit address information Figure 4 4 General Info Tab Firmware the current firmware version Hardware the current hardware version System Name the name of the...

Page 31: ...he ESS ID of the WLAN 2 Select a channel 3 Set Antenna diversity to Antenna No 1 No 2 or both 4 Set the desired bit rate For maximum bit rate support check both 5 5 Mbps and 11 Mbps Note The 1 Mbps an...

Page 32: ...5 The RSSI tab This tab allows you to view signal quality of WBC units and the associated stations Select an IP address as explained previously in Section 4 1 1 In the Associated Stations you can see...

Page 33: ...example if the same data frame is retransmitted ten times then the count will increase ten times In a point to point application this counter should relatively correspond to the number of bad fragmen...

Page 34: ...S 11 4 1 7 The Station Control Tab Figure 4 7 The Station Control Tab Station Control Click the button to revert back to the factory default settings Configuration Click Import Export to import or exp...

Page 35: ...o which the traps are sent A list of the last traps is displayed in the event log area below the Local IP field The default host address is the IP address of the PC running the BreezeNET Management ut...

Page 36: ...rk will be up and running immediately If you are content with the default settings of the Access Points you can stop right here It is more likely however that you want to assign different radio freque...

Page 37: ...g a cell plan for your site can be complicated and is usually done by experts employing special measuring equipment Furthermore the radio channels you may use depend on both the capabilities of the PC...

Page 38: ...ing received 3 Use the TFTP utility on the PC a Syntax TFTP i destination host PUT source file password b Example TFTP i 199 203 141 30 put ap1100 arm private Download will be completed within 1 minut...

Page 39: ...ndard for Wireless LAN All major networking standards including IP IPX 6 2 Environmental Operating temperature ambient 0 C to 55 C 32 F to 131 F Storage temperature 5 C to 70 C 23 F to 158 F Operating...

Page 40: ...r use with high gain antenna Frequency range 2 4 2 4835 Ghz direct sequence spread spectrum Number of Channels Europe 13 3 non overlapping US 11 3 non overlapping France 4 1 non overlapping 6 5 Specif...

Page 41: ...Appendix A Radio Signal Propagation BreezeNET DS 11 Series A 31 User s Guide...

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