Alvarion Technologies PC-DS11 PCMCIA WLAN User Manual 43510

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Document ID	43510
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Date Submitted	1999-06-22 00:00:00
Date Available	1999-10-07 00:00:00
Creation Date	2001-06-18 09:42:36
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Document Title	Microsoft Word - 43510
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Document Author:	jsoscia

BreezeNET DS.11 Series
PC-DS.11
User's
Manual
May, 1999
Cat xxxxxxxx
Rev A
© 1999 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.
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.
Statement of Conditions
The information contained in this manual is subject to change without notice. BreezeCOM Ltd. shall not
be liable for errors contained herein or for incidental or consequential damages in connection with the
furnishing, performance, or use of this manual or equipment supplied with it.
Warranty
In the following warranty text, “the Company” shall mean:
- BreezeCOM Inc., for products located in the USA.
- 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.
For warranty service or repair, the product must be returned to a service facility designated by the
Company. Authorization to return products must be obtained prior to shipment. The buyer shall pay all
shipping charges to the Company and the 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 properly installed on the unit. The Company does not warrant that the operation of the
unit or firmware will be uninterrupted or error-free.
Limitation of Warranty
The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by
the buyer, buyer supplied interfacing, unauthorized modification or misuse, operation outside of the
environmental specifications for the product, or improper site preparation or maintenance. No other
warranty is expressed or implied. The Company specifically disclaims the implied warranties of
merchantability and fitness for any particular purpose.
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:
1.
This device may not cause harmful interference.
2.
This device must accept any interference received, including interference that may cause undesired
operation.
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. This equipment generates,
uses, and can radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications. Operation of this equipment
in a residential area is likely to cause harmful interference in which case the user will be required to
correct the interference at his own expense.
FCC Radiation Exposure Statement
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.
This equipment should be installed an operated with the minimum distance between your body and the
antenna as shown in the table below:
Integrated PCMCIA antenna
1.8cm (0.7 inches)
Optional PC Card 2dBi antenna
1.8cm (0.7 inches)
Professional Installer (Antennas)
The indoor PC Card antennas use a unique connector and do not require professional installation.
Information to User
Any changes or modifications of equipment not expressly approved by the manufacturer could void the
user’s authority to operate the equipment and the company’s warranty.
Contacting BreezeCOM Technical Support
Should you need assistance beyond the scope of this guide, please contact your local BreezeCOM reseller
or distributor. If they cannot solve your problem, feel free to contact the BreezeCOM Technical Support
Department. The support representatives can assist you in solving any problems that cannot be solved by
your reseller. When requesting support, please have the following items available:
•
Configuration of the system, including models of the BreezeCOM equipment used.
•
Distance between devices.
•
Configuration, statistic counters, and error messages.
•
Description of problems encountered.
To contact BreezeCOM Technical Support, refer to the Technical Support page of the BreezeCOM web
site: www.breezecom.com
Table of Contents
TABLE OF CONTENTS
1.
Introduction............................................................................................................ 1
1.1 How to Use This Guide..................................................................................................1
1.2 BreezeNET DS.11 Features ...........................................................................................2
1.3 BreezNET DS.11 Compatibility and Standards.............................................................3
1.4 BreezeNET DS.11 Functional Description....................................................................3
1.4.1........................................................................................ Quick Review of Ethernet 3
1.4.2.............................................................................AP-DS.11 Wireless Access Point 3
1.5 Where to Use DSSS .......................................................................................................3
2.
Installation ............................................................................................................. 5
2.1 Installation for Windows 95B........................................................................................5
2.2 Installation for Windows 98...........................................................................................6
2.3 Installation for Windows NT .........................................................................................6
1.1. Indoor Installation considerations..................................................................................9
1.1.1...............................................................................................Site Selection Factors 9
1.1.2............................................................................................. Construction Materials 11
1.1.3................................................................................................................... Cell Size 12
3.
System Troubleshooting ...................................................................................... 14
3.1 Quick Start to Wireless Networking ............................................................................14
3.2 More about Cells..........................................................................................................15
4.
Technical specifications ....................................................................................... 17
4.1 Supported Standards ....................................................................................................17
4.2 Environmental ..............................................................................................................17
4.3 Power specifications ....................................................................................................17
4.4 Radio specifications .....................................................................................................18
BreezeNET DS.11
User's Manual
Table of Contents
4.5 Drivers..........................................................................................................................18
4.6 Specific features...........................................................................................................18
4.7 Physical Dimensions ....................................................................................................18
User's Manual
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BreezeNET DS.11
Appendix A. Radio Signal Propagation
1. INTRODUCTION
This chapter describes the main features of the BreezeNET PC-DS.11 Wireless
LAN Card.
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 5 Downloading Software Upgrades – Explains how to perform
future upgrades for BreezeNET DS.11 series units using a TFTP application.
⇒ Chapter 6 Technical Specifications - Lists the technical specifications for the
BreezeNET DS.11 series units.
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Appendix A. Radio Signal Propagation
1.2 BreezeNET DS.11 Features
The following are the main features of the BreezeNET DS.11 series:
•
Rate - 11 Mbps with 5.5, 2, and 1 Mbps auto fallback rates.
•
Future-proof Investment – All “infrastructure” items in the DS.11 series line
offer Flash updates.
•
Easy Installation - The DS.11 series supports a true plug-and-play.
•
Transmit Diversity - The DS.11 series supports a single or dual antennas
diversity.
•
Power Management – The PC-DS.11 can operate in stand-by mode between
transmissions to reduce batter consumption
•
Drivers to support - Windows 95/98/NT and Linux
•
PC-DS.11 Card Utility – Allows the user to control network conntections and
measure signal quality.
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Appendix A. Radio Signal Propagation
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.
•
Completely inter-operable with other 802.11 and 802.11 TGb products
•
Uses the 2.4 Ghz ISM unlicensed band
1.4 BreezeNET DS.11 Functional Description
BreezeNET DS.11 units add wireless functionality to existing Ethernet LANs.
1.4.1 Quick Review of Ethernet
Standard Ethernet LAN stations 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 the
station with the proper address processes the message.
1.4.2 AP-DS.11 Wireless Access Point
The AP-DS.11 enables 802.11 access to 802.3 (Ethernet) and guarantees interstation communication. The Access Point is required for the PC-DS.11 card to
communication to other PC-DS.11 cards or to the wired Ethernet LAN.
1.5 Where to Use DSSS
DSSS technology (Direct Sequence Spread Spectrum) spreads a signal power over
22MHz bandwidth; the same frequency is used for each transmission. This provides
the DS.11 with a fast bit rate and long range links, ideal for outdoor bridging.
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Appendix A. Radio Signal Propagation
WBS-DS.11
AP-DS.11
DSSS
SA-DS.11
DSSS
DSSS
WBC-DS.11
SA-DS.11
AP-DS.11
SA-DS.11
Figure 1-1. A Typical DS.11 installation with indoor and outdoor systems
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Appendix A. Radio Signal Propagation
2. INSTALLATION
2.1 Installation for Windows 95B
⇒
To install on Windows 95B, do the following:
1. Insert the PC-DS.11 slot in the PCMCIA slot on your computer. Windows 95 detects the
unit, briefly displays the New Hardware Found window, and then displays the Update
Device Driver Wizard window.
2. Insert the BreezeCOM drivers diskette and press Next. When Windows 95 notifies it has
found the driver, press Finish.
3. If the Windows 95 CAB files are not found automatically, the message Please insert disk
labeled Windows 95 CD-ROM appears. Press OK.
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Appendix A. Radio Signal Propagation
4. If no other windows appear, the installation is complete. If the Please insert disk labeled
Windows 95 CD-ROM appears, press OK, enter the path of the Windows 95 CAB files, and
press OK. Installation is now complete.
5. Restart the computer.
2.2 Installation for Windows 98
⇒
To install on Windows 98, do the following:
1. Insert the PC-DS.11 slot in the PCMCIA slot on your computer. Windows detects the unit
and displays the New Hardware Found window.
2. When the Add New Hardware Wizard window appears, press Next.
3. Select the Search for best driver option and press Next.
4. Insert the BreezeCOM drivers diskette, select the Floppy disk drives option, and press Next.
5. The installation wizard notifies you that the driver for the BreezeCOM PCMCIA Wireless
LAN Adapter has been located. Press Next.
6. A window appears notifying you that the driver for the BreezeCOM Wireless LAN Adapter
has been installed. Press Finish.
7. Restart the computer.
2.3 Installation for Windows NT
⇒
To install on Windows NT, do the following:
1. Press the Windows Start button, select Settings, and then select Control Panel. Doubleclick on the Network icon.
2. If the message The Windows NT Networking is not installed. Do you want to install it now?,
continue with step 2a. If this message does not appear, continue with step 2b.
a.
User's Manual
Press Yes and choose Wired to the network. When a list of supported
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BreezeNET DS.11
Appendix A. Radio Signal Propagation
network adapters appears, press Have Disk.
b.
Go to the Adapters tab, press Add, and then press Have Disk.
3. Insert the BreezeCOM drivers diskette, enter the location of the diskette (such as a:\) and
press OK.
4. From the list choose BreezeNET Wireless LAN PC Card and press OK. The PC-DS.11
LAN Adapter Properties window appears.
Figure 4.1: PC-DS.11 LAN Adapter Properties Window
5. The default settings are memory range D0000h to D3FFFh, IRQ 11. In the following steps
we will verify that these default settings are acceptable for your machine.
Note: If the PC-DS.11 Configuration application is already installed, you can access it
directly by pressing Advanced.
6. Press the Windows Start button and select Run. Type WINMSD and press OK. The
Windows NT Diagnostics window appears.
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Appendix A. Radio Signal Propagation
User's Manual
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BreezeNET DS.11
Appendix A. Radio Signal Propagation
1.1. Indoor Installation considerations
This chapter describes various considerations to take into account when planning
an indoor installation including site selection, antenna diversity, antenna
polarization, construction materials, and cell size.
Figure 0.2: BreezeNET LAN in a typical office environment
1.1.1.
Site Selection Factors
BreezeNET DS.11 wireless LAN products are robust, trouble-free units, designed
to operate efficiently under a wide range of conditions. The following guidelines
are provided to help you position the units to ensure optimum coverage and
operation of the wireless LAN.
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User’s Guide
Appendix A. Radio Signal Propagation
Metal Furniture
Position the units clear of metal furniture and away from moving objects such as
metal fans or doors.
Microwave Ovens
For best performance, position the units clear of radiation sources that emit in the
2.4 GHz frequency band, such as microwave ovens.
Antennas
Make sure the antennas are extended upward vertically in relation to the floor. For
models with external antennas, connect 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 Points, take into account the following additional
considerations.
Height
Install the Access Point at least 1.5m above the floor, clear of any high office
partitions or tall pieces of furniture in the coverage area. The Access Point can be
placed on a high shelf, or can be attached to the ceiling or a wall using a mounting
bracket.
Central Location
Install the Access Point in a central location in the intended coverage area. Good
positions are:
•
User's Manual
In the center of a large room.
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BreezeNET DS.11
Appendix A. Radio Signal Propagation
•
In the center of a corridor.
•
At the intersection of two corridors.
Many modern buildings have partitions constructed of metal or containing metal
components. We recommend that you install the Access Points on the corridor
ceilings. The radio waves propagated by the BreezeNET DS.11 LAN are reflected
along the metal partitions and enter the offices through the doors or glass sections.
1.1.2.
Construction Materials
A cell’s coverage area is affected by the construction materials of the walls,
partitions, ceilings, floors and the furnishings of the cell. Due to their intrinsic
nature, these materials may cause radio signal loss:
•
Metal objects reflect radio signals. They do not let the signals pass through.
•
Wood, glass, plastic and brick reflect part of the radio signals and allow part
of the radio signals to pass through.
•
Water and objects with a high moisture content absorb a large part of the radio
signals.
Use the following table as a guidline to predict the effects of different materials.
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Appendix A. Radio Signal Propagation
Table 0.1: Signal Loss Chart
Obstruction
Additional Loss
(dB)
Effective
Range
Approx. Range
Open Space
0dB
100%
1000ft. (300m)
Window (non-metallic tint)
3dB
70%
700ft. (215m)
Window (metallic tint)
5-8dB
50%
500ft. (150m)
Light Wall (dry wall)
5-8dB
50%
500ft. (150m)
Medium Wall (wood)
10dB
30%
300ft. (100m)
Heavy Wall (solid core 6”)
15-20dB
15%
150ft. (50m)
Very Heavy Wall (solid core
12”)
20-25dB
10%
100ft. (30m)
Floor/Ceiling (solid 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 loss associated with these obstructions,
however they do have an effect on the signal.
1.1.3.
Cell Size
Cell size is determined by the maximum possible distance between the Access
Point and the Station Adapter. This distance varies according to the building floor
plan and the nature of that environment. There are several general categories:
Open Indoor Areas
Open office areas with no partitioning and no obstacles between the Access Point
and the BreezeNET workstation.
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Appendix A. Radio Signal Propagation
The suggested maximum distance between Access Point and workstation:
Standard AP-DS.11 DS.11: ...........................200m (600 ft.)
Semi-Open Indoor Areas
Open-plan offices partitioned into individual workspaces, factory floor areas,
warehouses, etc.
The suggested maximum distance between Access Point and workstation:
Standard AP-DS.11 ......................................100m (300 ft.)
Closed Indoor Areas
A floor divided into individual offices by concrete, masonry or sheet-rock walls. A
house is also a closed indoor area.
The suggested maximum distance between Access Point and workstation:
Standard AP-DS.11 ......................................50m (150 ft.)
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Appendix A. Radio Signal Propagation
3. SYSTEM TROUBLESHOOTING
The following troubleshooting guide provides answers to some of the more
common problems which may occur when installing and using BreezeNET DS.11
Series products. If problems not mentioned in this guide should arise, checking the
Ethernet and WLAN counters may. If the problem persists, please feel free to
contact your local distributor or the BreezeCOM Technical Support Department.
To run the PC-DS.11 Card Utility do the following:
1. Double click on the PC-DS.11 connection icon on the task bar.
2. Click on the Session Tab.
3. Click on Diagnostics. The PC card utility will give a message indicating the
problem as it steps through the tests.
4. Click on the Signal Quality tab to see what the signal quality is for your
connection. A signal quality above 80% is considered a good link.
If the signal quality is lower than 80%, move closer to the Access point to see if it
improves. If moving closer does not improve the signal quality much, the relocate
the Access Point, then re-measure the signal quality. Use the AP-DS.11
management utility to measure the RSSI to other PC-DS.11’s on the network at the
same time to get a better picture of what your changes are doing with the other
stations.
3.1 Quick Start to Wireless Networking
Perform the following steps to configure a WLAN for the first time:
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. It is more likely however, that you want to assign different radio
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Appendix A. Radio Signal Propagation
frequencies to each Access Point, or impose some restrictions on the use of
your wireless network.
2. To be able to manage the Access Points via SNMP, every Access Point needs a
unique IP address. If you provide a DHCP or BOOTP service on your LAN
(and have sufficient free IP addresses available) this will be taken care of
automatically. If not, refer to Section Error! Reference source not found. for
further information on assigning IP addresses.
3. Use the BreezeNET Management utility to configure the Network Settings to
reflect your situation.
4. Select the radio channels of the Access Points according to your cell plan. See
Section Error! Reference source not found. for further information. Add
descriptive information about each Access Point for later reference.
3.2 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.
Creating 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-Cards you are deploying, as well as the regulations in your area.
The following table provides specifications for the main regulatory domains:
Regulatory
Domain
4.8.1.1 Area
BreezeNET DS.11 Series
Permissible
Channels
A-15
Predefined channels
User’s Guide
Appendix A. Radio Signal Propagation
FCC
United States
1 – 11
1, 6, 11
DOC
Canada
1 – 11
1, 6, 11
ETSI
Europe except
Spain and
France
1 – 13
1, 7, 13
SPAIN
Spain
10
10
FRANCE
France
10
10
MKK
Japan
14
14
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Appendix A. Radio Signal Propagation
4. TECHNICAL SPECIFICATIONS
4.1 Supported Standards
•
Compliant with ETS 300 328 and ETS 300 826 (CE marked)
•
IEEE 802.11 standard for Wireless LAN
•
All major networking standards (including IP, IPX)
4.2 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 humidity
10% to 90% (non-condensing)
Storage humidity
5% to 95% (non-condensing)
4.3 Power specifications
DC power supply
BreezeNET DS.11 Series
RX: 250mA; TX: 400mA
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Appendix A. Radio Signal Propagation
4.4 Radio specifications
Range
outdoors up to 15 miles
Transmit power
+18 dBm
+2 dBm (Low power for 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)
4.5 Drivers
Windows
95/98/ NT 4.0
Linux
TBD
4.6 Specific features
Supported bit rates
Utility Software
•
11 Mbps
•
5.5 Mbps
•
2 Mbps
•
1Mbps
PC-DS11 BreezeNET Card Utility
4.7 Physical Dimensions
Size
User's Manual
PCMCIA Type II
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Appendix A. Radio Signal Propagation
BreezeNET DS.11 Series
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