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Summary of Contents for BreezeNET DS.11
- Page 1 BreezeNET DS.11 Series WBS-DS.11 WBC-DS.11 User's Manual May, 1999 Cat xxxxxxxx Rev A...
- Page 2 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 trade names of BreezeCOM Ltd. Other brand and product names are registered trademarks or trademarks of their respective companies.
- Page 3 - BreezeCOM Ltd., for products located outside the USA. This BreezeNET product is warranted against defects in material and workmanship for a period of one year. During this warranty period the Company will, at its option, either repair or replace products that prove to be defective.
- Page 4 FCC Radio Frequency Interference Statement This equipment has been tested and found to comply with the limits for a class A digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
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Page 5: Table Of Contents
TABLE OF CONTENTS Introduction......................1-1 1.1 How to Use This Guide....................1-1 1.2 BreezeNET DS.11 Features ..................1-2 1.3 BreezNET DS.11 Compatibility and Standards............1-3 1.4 BreezeNET DS.11 Functional Description..............1-3 1.4.1..................Quick Review of Ethernet 1-3 1.4.2................WBS-DS.11 Wireless Base Station 1-3 1.4.3................WBC-DS.11 Wireless Bridge Client 1-4 1.5 Where to Use DSSS ....................1-4... - Page 6 Table of Contents System Troubleshooting ..................3-1 3.1 Troubleshooting Guide ....................3-1 BreezeNET Management Utility................4-3 4.1 BreezeNET Management Utility Main Window ............4-3 4.1.1................Selecting IP Addresses of Units 4-4 4.1.2....................The IP/SNMP Tab 4-5 4.1.3....................The General Info Tab 4-7 4.1.4..................The WLAN Parameters Tab 4-8 4.1.5......................
- Page 8 Table of Figures TABLE OF FIGURES Figure 1-1. A Typical DS.11 Wireless Bridging Combined with FHSS WLAN Segments1-5 Figure 2-1. DS.11 LEDs ....................2-6 Figure 2-2. DS.11 Rear Panel ....................2-7 Figure 4-1. BreezeCOM Manager Main Window (IP/SNMP Tab)........4-4 Figure 4-2. IP/SNMP Tab ....................4-5 Figure 4-3.
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Page 9: Introduction
⇒ 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. -
Page 10: Breezenet Ds.11 Features
MIB support - The DS.11 series supports all major SNMP management software: HP/OpenView, SUN NetManager, SNMPc. • Transmit Diversity - The DS.11 series supports a single or dual antennas diversity. • Bridge Client Support - Remote bridge clients support is up to 15 miles away. -
Page 11: Breeznet Ds.11 Compatibility And Standards
Introduction 1.3 BreezNET DS.11 Compatibility and Standards • IEEE 802.11 TGb Compliant – All BreezeNET DS.11 series units are fully compliant with the final IEEE 802.11 specification for wireless LANs, and thus support interoperability with other 802.11 compliant vendors. •... -
Page 12: Wbc-Ds.11 Wireless Bridge Client
Backbone links - Our DS.11 Bridge has low latency, which makes it ideal for backbone links of the WLAN. Data rates - The DS.11 is ideal for clients that need high sustained data rates or high burst rates. Long links - The DS.11 remote bridging capabilities enables it to support clients up to 15 mile away. - Page 13 Introduction WBS-DS.11 AP-10 FHSS SA-40 DSSS FHSS WBC-DS.11 AP-10 SA-10 SA-10 Figure 1-1. A Typical DS.11 Wireless Bridging Combined with FHSS WLAN Segments BreezeNET PRO.11 Series User’s Guide...
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Page 14: Figure 2-1. Ds.11 Leds
Installation 2. INSTALLATION 1. Mount the antenna (see BreezeNET User's Manual) and locate the WBS/C 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 Station. -
Page 15: Figure 2-2. Ds.11 Rear Panel
Installation The following table lists the DS.11 LEDs and their diagnostics: Color Explanation Green The server sends beacons immediately (10/s). Association/Radio Traffic while the station is scanning; the LED blinks Backbone Traffic irregularly until it is synchronized Power & Firmware Status Power &... -
Page 16: Outdoor Installation Considerations
If the antenna is positioned outdoors, 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. User's Manual BreezeNET DS.11... -
Page 17: Rooftop Installation
Such installations should be performed by professional antenna installers only! Rooftop installations offer several advantages: • Increased antenna range. • Less obstacles in path. • Improved performance due to greater height. • Reduced multipath problems. BreezeNET PRO.11 Series User’s Guide... -
Page 18: Antennas For Outdoor Applications
A point-to-point link is based on the use of one Access Point with external antennas (WBS-DS.11) and one adapter. The DS.11 and the WBC-DS.11 must be equipped with one or two directional antennas. The necessary antenna gain depends on the required range and performance. - Page 19 Antenna polarization must be the same at either end of the link. In most applications, the preferred orientation is vertical polarization. Above-ground propagation of the signal is better when it is polarized vertically. To verify antenna polarization, refer to the assembly instructions supplied with the antenna set. BreezeNET PRO.11 Series User’s Guide 2-11...
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Page 20: Antenna Seal
700m (2000 ft.) 2.3.6 Link Distance Link distance is the maximum distance between the WBS-DS.11 and the station adapter, usually related to point-to-point installations using external antennas. For open outdoor areas with an unobstructed line of sight between the WBS and the wireless bridge, the suggested maximum distance is 15 miles. -
Page 21: Using Outdoor Range Tables
United States (or where FCC rules apply), only these antenna configurations shown in the table above are used. The use of any antenna other than those listed is expressly forbidden in accordance to FCC rules CFR47 part 15.204. BreezeNET PRO.11 Series User’s Guide 2-13... -
Page 22: Precautions
Failure to do so may void the BreezeNET Product Warranty and may expose the end user to legal and financial liabilities. BreezeCOM and its resellers or distributors are not liable for injury, damage or violation of government regulations associated with the installation of detached antennas. -
Page 23: Rain Proofing
The installer must install the lightning protector in a way that maximizes lightning protection. BreezeCOM offers the following high-quality lightning arrestor assembly: BreezeNET AL 1 Lightning Arrestor - Part No. 872905 5 ft (1.5m), N Male to N Female. 2.4.3 Rain Proofing 12, 18, and 24 dBi antennas must be sealed against rain at the point the cable enters the pole before they are suitable for external use. -
Page 25: System Troubleshooting
3. SYSTEM TROUBLESHOOTING The following troubleshooting guide provides answers to some of the more common problems which may occur when installing and using BreezeNET PRO.11 Series products. If problems not mentioned in this guide should arise, checking the Ethernet and WLAN counters may help (see Section Error! Reference source not found.). - Page 26 Ethernet UTP cable is faulty. solid at the hub port. If this is not the case, activity (WBS-DS.11 and the port is inactive. Try another port on the 2. Ethernet port in unit is WBC-DS.11 units).
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Page 27: Breezenet Management Utility
BreezeNET Management Utility 4. BREEZENET MANAGEMENT UTILITY The BreezeNET DS.11 is an SNMP-based (Simple Network Management Protocol) management utility that provides a consistent view of the wireless network. The systems administrator can use the management utility to control a large number of DS.11 Access Points from a single location. -
Page 28: Selecting Ip Addresses Of Units
Signal Quality bar - This bar appears only if the selected IP address is a WBC-DS.11 unit, and displays the signal quality between the selected Bridge unit and the WBS-DS.11 unit connected to it. If the selected IP address is a WBC-DS.11 you can view its signal quality in the RSSI tab. User's Manual... -
Page 29: The Ip/Snmp Tab
BreezeNET Management Utility Note: If you select an IP address of a WBS-DS.11 unit, the signal quality is displayed in the Signal Quality tab. This tab displays a table that lists all the MAC addresses, connected to that AP, and their signal quality. -
Page 30: Figure 4-3. The Set Ip Dialog Box
BreezeNET Management Utility 4.1.2.1 Assigning and Editing IP Parameters Using the Network Autodiscovery 1. Type the known Read/Write Community string in the Community field (the default string is Private). 2. Select a unit address as describe in Section 4.1.1. The unit's Read-Read/Write... -
Page 31: The General Info Tab
BreezeNET Management Utility 2. Type the parameters in the appropriate fields and click OK. A message box is displayed notifying you when the changes to take affect. 4.1.3 The General Info Tab The General Info tab displays general information regarding the unit's firmware and hardware versions, and general unit address information. -
Page 32: The Wlan Parameters Tab
4. Set the desired bit rate. For maximum bit rate support, check both 5.5 Mbps and 11 Mbps. Note: The 1 Mbps and 2 Mbps bit rates are checked by default. In case of interference, the BreezeNET Management utility automatically falls back to the lower bit rate. User's Manual BreezeNET DS.11... -
Page 33: The Rssi Tab
BreezeNET Management Utility 4.1.5 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 all the stations associated with the selected unit and their signal quality. -
Page 34: The Counters Tab
BreezeNET Management Utility 4.1.6 The Counters Tab Figure 4-6. Counters Tab Select a counter and drag it to the graph icon to view the graph. • Transmit Fragment - The total number of transmitted frames. The count includes data, control and management frames and also the number of retransmissions of data frames (for example, if the same data frame is retransmitted ten times then the count will increase ten times). -
Page 35: The Station Control Tab
BreezeNET Management Utility 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 export a complete set of configuration parameters to an external file. -
Page 36: The Log Tab
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 utility. -
Page 37: Debug Info
1. Physically connect the Access Points to the Ethernet LAN. Make sure they are switched on. The DS.11 wireless network will be up and running immediately. If you are content with the default settings of the Access Points, you can stop right here. -
Page 38: More About Cells
BreezeNET Management Utility 4.3 More about Cells Each Access Point in the network forms the center of a cell, or BSS. The Cells should overlap slightly to guarantee seamless wireless connectivity everywhere. Neighboring Access Points should preferably send and receive on different channels for maximum throughput. -
Page 39: Software Download Procedure
Download will be completed within 1 minute, and a message of successful file transfer will show on the screen. 4. Click OK; the unit resets itself. 5. Check the diagnostics LEDs, and use the BreezeNET Management utility to make sure that the version number is correct. Note: Do not disconnect any cables or try to stop the process before downloading is completed. -
Page 40: Technical Specifications
10% to 90% (non-condensing) Storage humidity 5% to 95% (non-condensing) 6.3 Power specifications DC power supply In 230 VAC 50 Hz 150 mA Out 9 VDC 1.3 A WBS-DS.11 Access Point In 9 VDC 1 A User's Manual 6-16 BreezeNET DS.11... -
Page 41: Radio Specifications
6.5 Specific features Supported bit rates • 11 Mbps • 5.5 Mbps • 2 Mbps • 1Mbps Utility Software DS11 BreezeNET Management utility 6.6 Physical Dimensions Size 180 x 220 x 40 mm Weight BreezeNET PRO.11 Series User’s Guide 6-17... -
Page 43: Appendix A. Radio Signal Propagation
The electromagnetic wave is intercepted by the receiving antenna which converts it back to an RF signal. Ideally, this RF signal is the same as that originally generated by the transmitter. The original information is then demodulated back to its original form. BreezeNET PRO.11 Series User’s Guide... -
Page 44: Rf Terms And Definitions
Figure A-2. Attenuation of an RF signal is the incident power level at the attenuated input is the output power level at the attenuated output Attenuation is expressed in dB as follows: = -10 x Log (P User's Manual BreezeNET DS.11... - Page 45 (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 BreezeNET PRO.11 Series User’s Guide...
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Page 46: Figure A-3. Side View
Omni-directional Antenna Radiates and receives equally in all directions in azimuth. The following diagram shows the radiation pattern of an omni-directional antenna with its side lobes in polar form. Figure A-3. Side View Figure A-4. Top View User's Manual BreezeNET DS.11... -
Page 47: Figure A-5. Radiation Pattern Of Directional Antenna
EIRP (Effective Isotropic Radiated Power) The antenna transmitted power. Equal to the transmitted output power minus cable loss plus the transmitting antenna gain. Output power of transmitted in dBm CtTransmitter cable attenuation in dB GtTransmitting antenna gain in dBi BreezeNET PRO.11 Series User’s Guide... - Page 48 The problem is that there is only a 2 dB difference between received signal power and sensitivity. Normally, a higher margin is desirable due to fluctuation in received power as a result of signal fading. User's Manual BreezeNET DS.11...
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Page 49: Figure A-6. Multipath Reception
Weather conditions (Rain, wind, etc.) At high rain intensity (150 mm/hr), the fading of an RF signal at 2.4 GHz may reach a maximum of 0.02 dB/Km Wind may cause fading due to antenna motion • Interference BreezeNET PRO.11 Series User’s Guide... -
Page 50: Figure A-7. Fresnel Zone
The Fresnel zone is the area of a circle around the line of sight. The Fresnel Zone is defined as follows: Figure A-7. Fresnel Zone √ (λxD) = ½ R: radius of the first Fresnel zone λ: wavelength User's Manual BreezeNET DS.11... -
Page 51: Figure A-8. Fresnel Zone Clear Of Obstacles
Appendix A. Radio Signal Propagation D: distance between sites Figure A-8. Fresnel Zone Clear of Obstacles When at least 80% of the first Fresnel Zone is clear of obstacles, propagation loss is equivalent to that of free space. BreezeNET PRO.11 Series User’s Guide...
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