Aironet Wireless Communications 102038 Direct Sequence Spread Spectrum Data Transceiver User Manual

Aironet Wireless Communications Inc Direct Sequence Spread Spectrum Data Transceiver

manual

Aironet Wireless Communications, Inc. • 3875 Embassy Parkway

Akron, Ohio 44333-8357

www.aironet.com

Technical User’s Guide

4800 Series

Aironet Wireless LAN Adapter

PC4800

DOC-710-00520-A0

Aironet Wireless Communications, Inc.

No part of this document may be reproduced or transmitted in any means, elec-

tronic or mechanical, for any purpose, without the written permission of Aironet.

Information in this document is subject to change without notice. Aironet makes

no representation or warranties with respect to the contents of this manual and

specifically disclaims any express or implied warranties of merchantability or

fitness for any particular purpose.

LM4500TM, AP4500TM, PC4500TM, LM4800TM, AP4800TM, PC4800TM, and AironetTM

are trademarks of Aironet Wireless Communications, Inc.

Other trademarks used are properties of their respective owners.

Printed in USA

DOC-710-00520-A0

Table of Contents

About the Technical User’s Guide ............................... vii

Typographical Conventions ................................. viii

Section 1

Installing the Wireless LAN Adapter ..............................9

Before You Start ...................................................10

Installing the Wireless LAN Adapter .....................11

Section 2

Drivers for Special Installations ...................................25

Driver Overview ....................................................25

Windows for Workgroups NDIS2

Installation ............................................................28

DOS NDIS2 Installation ........................................29

DOS Packet Driver Installation .............................31

ODI Driver Installation ..........................................33

General Information .............................................34

Driver Keywords and Settings ..............................36

Section 3

Using the WinDGS Utilities ..........................................49

WinDGS Commands Menu .........................................49

Select Card ..........................................................49

Load New Firmware .............................................49

Edit Properties ......................................................51

Statistics ...............................................................51

Status ...................................................................51

Link Test ...............................................................52

Site Survey ...........................................................54

Radio Off/On ........................................................56

Exit .......................................................................56

Options Menu ..............................................................56

Preferences ..........................................................56

Core Dump ...........................................................57

NDIS Driver Core Dump .......................................57

Using Edit Properties ...................................................57

System Parameters ..............................................58

Network Parameters ............................................60

RF Network Parameters .......................................60

Advanced (Infrastructure) .....................................62

Advanced (Ad Hoc/IBSS) .....................................64

Using the Site Survey Active Mode Feature ................65

Destination MAC Address ....................................65

Continuous Link Test ...........................................66

Destination is Another Aironet Device ..................66

Number of Packets ...............................................66

Packet Size ..........................................................66

Table of Contents

Data Retries .........................................................66

Data Rates ...........................................................66

Delay Between Packets .......................................67

Packet Tx Type ....................................................67

Packet Success Threshold ...................................67

Using the Linkscope Utility ..........................................68

Section 4

Error Messages and Troubleshooting .........................69

Indicator LEDs ......................................................69

If Your Radio Fails to Establish Contact ...............71

Appendix A

Aironet Wireless LAN Adapter Overview .....................73

Safety Information ................................................74

Radio Characteristics ...........................................76

Direct Sequence Radio Technology .....................76

Data Transparency and Protocols ........................76

Protocols Supported .............................................77

Radio Ranges ......................................................77

Radio Antenna .....................................................78

Security Features .................................................79

Terminology .........................................................79

System Configurations .........................................81

Coverage Options ................................................85

Appendix B

PC Card Specifications ...............................................89

LAN Drivers Supported ........................................89

Radio Specifications .............................................90

Power Requirements ............................................91

Physical Specifications .........................................91

Mechanical Description ........................................92

Appendix C

Channels .....................................................................93

Appendix D

Declarations of Conformity ..........................................95

Appendix E

Technical Support .....................................................101

About the Technical User’s Guide

iii

About the Technical User’s

Guide

This guide covers the installation, configuration, control,

and maintenance of your Aironet 4800 Series PC Card

Wireless LAN Adapter. The Guide is arranged as follows:

Section 1 – Installation – describes installation of the PC

Card.

Section 2 – Drivers for Special Installations – describes

installation and configuration of the various network drivers.

Section 3 – Utilities – provides detailed procedures for

using the utilities to load new firmware versions, as well as

how to perform link tests and site surveys.

Section 4 – Error Messages and Troubleshooting –

provides detailed descriptions of the LED messages and

error codes, as well as general procedures for correcting

common problems.

Appendix A – Aironet Wireless LAN Adapter Overview –

provides a general introduction to the 4800 Series PC Card,

direct sequence radio technology, and the various configu-

rations you can use when operating the 4800 Series PC

Card in your infrastructure.

Appendix B – Specifications – provides radio and physical

specifications.

Appendix C – Channels – provides channel identifiers and

channel center frequencies for various area regulatory

agencies.

Appendix D – Declarations of Conformity – provides

conformity information about the 4800 Series Wireless LAN

Adapter.

Appendix E – Technical Support – provides contact

information for Aironet.

About the Technical User’s Guide

Typographical Conventions

When reading the User’s Guide and Technical Reference

Manual, it is important to understand the symbol and

formatting conventions used in the documentation. The

following symbols are used in the guide.

Convention Type of Information

Indicates a note which contains important

information.

Indicates procedures which, if not observed,

could result in loss of data or damage to the

equipment.

Bold type An action you must perform, such as typing a

character or making a selection with your

mouse.

Section 1: Installing the Wireless LAN Adapter

Section 1

Installing the Wireless LAN

Adapter

This section describes the procedures for installing the

Wireless LAN Adapter.

Here’s what you’ll find in this section:

• Before You Start

• Installing the Wireless LAN Adapter

Section 1: Installing the Wireless LAN Adapter

Before You Start

For the PC Card to be used with a computing device (desk-

top personal computer, notebook, laptop computer, portable

or hand-held device), the device must be equipped with an

internal or external PC Card Type II or Type III slot. All driv-

ers and supporting software (card and socket services) for

the PC Card slot must be loaded and configured.

After unpacking the PC Card, make sure the following items

are present and in good condition:

•PC4800 Wireless LAN Adapter

•Software Driver Diskette

•Utilities Diskette

If any item is damaged or missing, contact your Aironet sup-

plier. Save all shipping and packing material to repack the

unit should service be required.

NOTE: Any remote antenna and its associated wiring are

ordered and packed separately.

Section 1: Installing the Wireless LAN Adapter

Installing the Wireless LAN Adapter

This section provides instructions for installing an Aironet

client card on a computer using Windows 95 or 98, and on a

computer using Windows NT. The instructions for Windows

95 and 98 show screens typical in Windows 98, and the

instructions for Windows NT show screens typical in NT

4.0. If your computer uses Windows 95 or Windows NT

3.51, your screens will differ slightly.

If you are installing your client card on a computer using

Windows for Workgroups, DOS, Novell Netware, or any

other ODI-compliant DOS environment, see Section 2 —

Drivers for Special Installations.

Before you begin, examine the PC Card. One end is a dual-

row, 68-pin PC Card connector. This side will be inserted

into the PC Card slot with the Aironet logo on the PC Card

facing up. The card is keyed so it can be inserted only one

way into the PC Card slot.

CAUTION: The following procedures and physical

connections apply generally to normal and conventional

PC Card slots. In the cases of custom or non-

conventional equipment, be alert to possible differences

in PC Card slot configurations.

The PC Card can be connected to a PC Card Type II slot.

This includes slots that support both Type II and Type III

cards.

CAUTION: Do not force the PC Card into the PC Card

slot. Forcing it will damage both the PC Card and the slot.

If the PC Card does not go in easily, remove the card and

re-insert it.

Section 1: Installing the Wireless LAN Adapter

If the operating system on your computer is Windows

95 or 98, follow these steps:

1. While your computer is up and running, hold the PC

Card so the Aironet logo is facing up, and slide the

PC Card into the slot until its connector is firmly

seated and the slot’s eject button pops out. The

New Hardware Found window appears briefly, fol-

lowed by the Add New Hardware window:

Section 1: Installing the Wireless LAN Adapter

Note: Steps 8, 9, 10, and 11 allow you to name your client

card and specify the name of the access point your card will

“talk to.” Your client card will work fine if you skip these steps,

however. For the simplest setup of your client card, click OK

and skip to step 13 of these instructions.

Section 1: Installing the Wireless LAN Adapter

If the operating system on your computer is Windows

NT, follow these steps:

1. Turn your computer off, plug the card into the PCM-

CIA slot, and turn the computer back on.

2. On your Windows Control Panel (click

the Start button, then select Settings,

then Control Panel), select the Network

icon. The Network window appears.

Section 1: Installing the Wireless LAN Adapter

Note: Steps 9, 10, 11, and 12 allow you to name your client

card and specify the name of the access point your card will

“talk to.” Your client card will work fine if you skip these

steps, however. For the simplest setup of your client card,

click OK and skip to step 14 of these instructions.

Section 1: Installing the Wireless LAN Adapter

Drivers for Special Installations

Section 2

Drivers for Special Installa-

tions

The PC Card is supplied with PACKET, NDIS2, NDIS3 and

ODI drivers allowing operation under DOS, Windows 3.x,

Windows for Workgroups, Windows 95, Windows 98, Win-

dows NT, and Novell Netware. The PC Card is fully IEEE

802.11 compliant.

Driver Overview

The PC Card is shipped with two diskettes:

• WinDGS diagnostics diskette

• Aironet driver diskette

This section covers the drivers. The utilities are discussed

in Section 3 – Utilities.

To use the DOS, Windows 3.x and Windows for Work-

groups based drivers, you must create or edit a configura-

tion file created with an ASCII text editor. Installation of

each driver is discussed in the following tables.

Drivers for Special Installations

The driver disk shipped with the Wireless LAN Adapter is

organized as follows:

Table 2.1 - Driver Disk Structure

README.TXT Contains latest information about the disk

contents

DIAG Directory containing utilities

FLSH3545.COM PC card flash firmware

45C???.BIN Latest firmware release

NDIS2 Directory containing NDIS2 driver files

AWC2N45C.DOS NDIS2 driver

OEMSETUP.INF NDIS2 compatible install file for MicroSoft

Windows for Workgroups

PROTOCOL.INI The required configuration file for the NDIS2

driver. The PROTOCOL.INI file on the diskette

provides sample entries for operation in

Infrastructure Mode.

PROTOCOL.AHC Sample PROTOCOL.INI file with entries for

Ad Hoc Mode

PKT Directory containing DOS packet driver files

AWCP45C.COM DOS based packet driver

AWCPKT.INI The required configuration file for the Packet

driver. The AWCPKT.INI file on the diskette

has sample entries for operation in

Infrastructure Mode.

AWCPKT.AHC Sample AWCPKT.INI file with entries for

Ad Hoc Mode.

Drivers for Special Installations

NDIS3 (PC4500) Directory containing NDIS3 driver files

PC4500.INF WIN95/98 install file

PC4500.SYS NDIS3 driver

PC4500.DLL NDIS3 library

VXD4500.VXD Virtual device driver for Aironet WinDGS utility

OEMSETUP.INF WIN NT install file

ODI Directory containing ODI driver files

AWCO45C.COM PC4500 DOS based ODI driver

NET.CFG The required configuration file for ODI. The

NET.CFG file on the drive diskette contains

sample entries for operation in Infrastructure

Mode.

NDIS3 (PC4800) Directory containing NDIS3 driver files

PC4800.INF WIN95 install file

PC4800.SYS NDIS3 driver

PC4800.DLL NDIS3 library

VXD4800.VXD Virtual device driver for Aironet WinDGS utility

OEMSETUP.INF WIN NT install file

ODI Directory containing ODI driver files

AWCO45C.COM PC4800 DOS based ODI driver

NET.CFG The required configuration file for ODI. The

NET.CFG file on the drive diskette contains

sample entries for operation in Infrastructure

Mode.

Drivers for Special Installations

Windows for Workgroups NDIS2

Installation

1. Turn on your computer and start Windows for Work-

groups.

2. Go to the Network program group and click on Network

Set-Up.

3. Under Network Setup, choose Networks.....

4. Under Networks, choose Install Microsoft Windows

Network. Select OK.

5. Under Network Setup, choose Drivers....

6. Under Network Drivers, choose Add Adapters.

7. If the drivers were already copied to the hard disk, they

will be displayed in the list.

8. Under Add Adapter, choose the appropriate Aironet

Adapter. If it is not on the menu list, choose Unlisted or

Updated Network Driver. The Install Driver pop up

window will ask you for the Aironet driver disk.

9. Place the driver disk in drive A.

10. Type A:\NDIS2\ at the prompt and press Enter.

11. Choose the correct Aironet Adapter and click OK.

12. If the chosen adapter is displayed in the Network

Drivers, click on Setup.

13. Select the appropriate parameters, such as Infrastruc-

ture Mode, SSID, Channel, and Bitrate.

14. Exit Windows for Workgroups.

15. To modify the PC Card system parameters, edit the

PROTOCOL.INI file in the Windows directory.

16. Reboot your computer.

Drivers for Special Installations

DOS NDIS2 Installation

The Aironet Wireless LAN Adapter can be installed in a

NetBIOS compliant DOS environment such as MicroSoft

LAN Manager or PC LAN.

The installation of this driver includes creating or editing a

configuration file (PROTOCOL.INI).

PROTOCOL.INI must contain the following lines:

Table 2.2 - Minimum PROTOCOL.INI Driver Settings

Additional variables defined in the following section may

also be used.

1. Power on your computer.

2. Copy the \NDIS2\AWC2N45C.DOS from the Aironet

Device Driver diskette to the directory containing the

network files.

3. Copy the PROTOCOL.INI file to the network directory

or merge statements from the Aironet supplied file into

your existing PROTOCOL.INI file.

4. Modify the CONFIG.SYS file. After the line containing:

Device=PROTMAN.DOS, add Device=[drive:] [path]

AWC2N45C.DOS.

Infrastructure Mode Ad Hoc Mode

[AW2N45C] [AW2N45C]

DRIVERNAME=AWC2N45C$ DRIVERNAME=AWC2N45C$

If INFRASTRUCTURE is omitted

the default will be “ON”INFRASTRUCTURE = “NO”

SSID = “your_SSID_here”SSID = “your_SSID_here”

CHANNEL = <channel>

Drivers for Special Installations

5. To modify the PC Card system parameters, edit the

PROTOCOL.INI file in the network directory. For a list

of parameters which can be modified, see Table 2.2.

6. Reboot your computer.

Drivers for Special Installations

DOS Packet Driver Installation

The installation of this driver includes creating or editing a

configuration file (AWCPKT.INI). This file must contain the

following lines:

Table 2.3 - Minimum AWCPKT.INI Driver Settings

Additional variables defined in the following section may

also be used.

The Wireless LAN Adapter can be installed in a DOS

environment using DOS IP stack products such as FTP

software.

1. Power on your computer.

2. Copy the \PKT\AWCP45C.COM file from the Aironet

Device Driver diskette to the directory containing the

network files.

3. Copy the AWCPKT.INI file from the Aironet Device

Driver diskette to the directory containing the Packet

driver.

4. If you would like to modify the PC Card system parame-

ters, edit the AWCPKT.INI file. For a list of parameters

which can be modified, see Table 3.3.

Infrastructure Mode Ad Hoc Mode

[AWCPKT] [AWCPKT]

If INFRASTRUCTURE is omit-

ted the default will be “ON”INFRASTRUCTURE = “NO”

SSID = “your_SSID_here”SSID = “your_SSID_here”

CHANNEL = <channel>

Drivers for Special Installations

5. Load the driver by typing AWCP45C [-cinuw]

<int_number> at the DOS prompt (i.e. AWCP45C

0x65) and press Enter.

NOTE: To unload the driver, type AWCP45C

–u <int_number> (i.e. AWCP45C –u 0x65).

6. Load the DOS IP stack.

Drivers for Special Installations

ODI Driver Installation

The PC Card can be installed in an ODI compliant DOS

environment such as Novell NetWare.

Table 2.4 - Minimum NET.CFG Driver Settings

1. Power on your computer.

2. Copy the \ODI\AWCO45C.COM driver from the Aironet

Driver diskette to the directory containing the network

files.

3. Copy the \ODI\NET.CFG file from the Aironet Driver dis-

kette or merge the Aironet supplied NET.CFG file into

your existing NET.CFG file in the network directory.

4. Modify the PC Card system parameters by editing the

NET.CFG file. For a list of parameters which can be

modified, see Table 3.4.

5. Run the batch files created by the NetWare installation

disks or manually load the driver from AUTOEXEC.BAT

or the command line. This can be done by running LSL,

followed by AWCO45C, IPXODI, and NETX or VLM.

Infrastructure Mode

Link Driver AWCO45C

If INFRASTRUCTURE is omitted the default will be “ON”

SSID = “your_SSID_here”

CHANNEL = <channel> (only required in ad hoc mode)

Drivers for Special Installations

General Information

•AWCPKT.INI file must have a section header of

[AWCPKT].

•PROTOCOL.INI file can have any section header, but

the section must contain the keyword and parameter

DRIVERNAME=ìAWC2N45C$î.

•NET.CFG file must have a section header of

[Link Driver AWCO45C].

NOTE: These lines may appear anywhere within a

section. Only the sections that contain these lines will be

parsed.

•Multiple sections are supported.

•Blank lines are supported.

•Comments begin with semi-colon and may appear any-

where on a line.

•Keywords can be upper or lower case and may be sur-

rounded by white space if desired.

•Any parameter that begins with “0x” will be assumed to

be hexadecimal. Any parameter that begins with a digit

(excluding the “0x” case) will be assumed to be deci-

mal. Any parameter that begins with quotes will be

assumed to be a quoted string parameter. Any other

parameter will be assumed to be an unquoted string

parameter.

•For PROTOCOL.INI string parameters, double quotes

are required around the string if the string contains any

special characters.

NOTE: PROTOCOL.INI does not support some of the

white space characters in a quoted string. If a string

begins with an alphabetic character and contains no

special characters, the quotes may be omitted.

Drivers for Special Installations

•For Packet string parameters, the string can be

enclosed with double quotes or single quotes. If a string

is quoted, any character except a “null” and the quote

delimiter itself can occur between the quotes.

NOTE: If double quotes are used for a delimiter, a single

quote may appear in the string, and vise versa. If the

string begins with an alphabetic character and contains

no special characters, the quotes may be omitted.

•For numeric parameters, the value can be hexadecimal

or decimal. Hexadecimal numbers must be preceded

with the characters “0x” but all characters can be upper

or lower case.

•Mac address parameters are parsed as string parame-

ters, therefore, the addresses must be enclosed in sin-

gle or double quotes.

NOTE: The MAC address cannot be a multicast address.

Drivers for Special Installations

Driver Keywords and Settings

The default PC Card configuration is set to:

•Constant Awake Mode

•Infrastructure Mode – This allows association with any

Aironet Access Point matching the SSID supplied by

the user

•The factory supplied network address

•Receive directed packets to this address as well as

multicasts and broadcasts

•Retry data packets up to 16 times before discarding the

frame

•Retry RTS sequence up to 16 times before discarding

the frame

•RTS exchange on all frames greater than 300 bytes

•Fragment frames longer than 700 bytes

•Kill fragmented transmit packets if not delivered in

5 seconds

•Kill fragmented receive frames if not complete after

10 seconds

•Active scanning with 3 Kµsec energy detect time and

20 Kµsec probe response wait timeout

•Re-scan if eight beacons are consecutively missed

•Send an Access Point keep-alive message every

10 seconds

Drivers for Special Installations

The following tables contain keywords and parameter set-

tings common to both the NDIS2 PROTOCOL.INI, ODI

NET.CFG, and the PKT AWCPKT.INI configuration files.

Basic system operation can be adjusted with the following

parameters.

Table 2.5 - General Network Keywords

Keywords Value Description

INFRASTRUCTURE ON, YES

OFF, NO Optional – specifies whether system

operation uses an infrastructure or

peer-to-peer/ad hoc network

(default is ON, YES).

SSID 1 to 32 character

string This parameter must match the

SSID of the system for proper

operation.

NODENAME 1 to 16 character

string Optional – specifies a readable

name for the station.

NETADDRESS Any IEEE MAC

address except

broadcast and

multicast

Optional – this setting allows for

locally administered MAC

addresses by overriding the unique

MAC ID on the PC Card.

NODE ADDRESS Same as NETADDRESS (keyword

only valid in NET.CFG file).

RXMODE NORMAL,

UNICAST,

NOMULTICAST

Optional – this setting determines

what frames are delivered to the

driver from the PC Card (default is

NORMAL). NORMAL indicates

unicast, multicast and broadcast

frames are received.

DATARATE1 0-255 Optional – specified in increasing

speed to identify the network

configuration to associate to

(default is 1_2 [4500] or

1_11 [4800]).

DATARATE2 0-255 Optional – specified in increasing

speed to identify the network

configuration to associate to.

Drivers for Special Installations

Network performance can be optimized with the following

variables.

Table 2.6 - Advanced Network Keywords

Keywords Value Description

LONGRETRYLIMIT 0 – 255 Optional – specifies the number of

times an unfragmented packet will

be retried before the packet is

dropped and a transmit error is

reported to driver (default is 16).

SHORTRETRYLIMIT 0 – 255 Optional – specifies the number of

times that a fragmented packet will

be retried to gain access before a

packet is dropped and a transmit

error is reported to the driver

(default is 16).

RTSTHRESHOLD 0 – 2312 Optional – specifies the minimum

frame size, in bytes, for which RTS/

CTS delivery will be used. Packets

longer than this value will be deliv-

ered using RTS/CTS handshaking

(default is 300).

TXMSDULIFETIME 0 – 0xFFFF Optional – specifies the maximum

time to attempt packet delivery

(default is 5,000 Kµsec

[5 seconds]).

RXMSDULIFETIME 0 – 0xFFFF Optional – specifies the maximum

time for receiving a fragmented

packet (default is 10,000 Kµsec

[10 seconds]).

TXPOWERLEVEL 0 – 100 Optional – selects the next highest

programmed power level for trans-

mit in mW.

RXDIVERSITY DEFAULT, ON,

RIGHT, LEFT Optional – specifies the receive

diversity method to be used by the

PC Card (default is on).

TXDIVERSITY DEFAULT, ON,

RIGHT, LEFT Optional – specifies the transmit

diversity method to be used by the

PC Card (default is on).

Drivers for Special Installations

Additional system performance adjustments can be made

with the following group of variables.

Table 2.7 - Fragmentation Keywords

Keywords Value Description

FRAGTHRESHOLD 256 – 2312 (must

be even) Optional – specifies the fragmenta-

tion size in bytes. Frames longer

than this value will be transmitted

using multiple packets (default is

700).

Drivers for Special Installations

The Wireless LAN Adapter power management can be

adjusted with the following group of variables.

Table 2.8 - Power Management Keywords

Keywords Value Description

POWERSAVEMODE CAM, PSP,

FASTPSP Optional – specifies a particular

operational mode (default is CAM).

CAM = Constant Awake Mode

PSP = Power Save Mode

FASTPSP = Fast Power Save Mode

Note: In Ad Hoc Mode, ATIMDU-

RATION must also be set.

ATIMDURATION Between 0 and

less than the

beacon interval.

Optional – ad hoc/IBSS only – spec-

ifies the length of time in Kµsec for

ATIMs following a beacon (this

value must be non-zero for PSP ad

hoc operation. 0 is Constant Awake

Mode (default is 5).

This value is only used when start-

ing a new network. When joining a

network, the value currently in use

will be adopted.

SLEEPFORDTIM ON, OFF Optional – infrastructure with PSP

or Fast PSP Modes only – if ON, the

node is allowed to sleep through

DTIMs for extra power saving.

Broadcast and multicast traffic may

be missed (default is OFF).

LISTENTIME 0 – 0xFFFF Optional – infrastructure with PSP

or Fast PSP Modes only – deter-

mines how often to awaken for bea-

cons. Note that the PC Card will

always awaken to receive DTIMs

when in PSP Mode, unless sleep for

DTIMs is set (default is 200 Kµsec

[200 ms]).

Drivers for Special Installations

Table 2.8 - Power Management Keywords (Continued)

Keywords Value Description

FASTLISTENTIME 0 – 0xFFFF Determines how often to awaken for

beacons. Note that the PC Card will

always awaken to receive DTIMs

when in Fastpsp Mode (default is

100 Kµsec).

LISTENDECAY 0 – 0xFFFF Optional – infrastructure with PSP

or Fast PSP Modes only – rate at

which the listen interval grows. The

number of times to use the current

listen interval before doubling it.

Listen interval will begin at

FASTLINSTENTIME and eventu-

ally decay to LISTENTIME (default

is 2).

FASTLISTENDELAY 0 – 0xFFFF Optional – infrastructure with PSP

or Fast PSP Modes only – time to

delay immediately after a transmis-

sion before beginning at

FASTLISTENTIME (default is 200

Kµsec).

Drivers for Special Installations

Additional system performance adjustments can be made

with the following group of variables.

Table 2.9 - Scanning Keywords

Keywords Value Description

SCANMODE ACTIVE,

PASSIVE,

ADVANCED

Optional – parameter to determine

the current scanning mode to be

used by the PC Card (default is

ACTIVE).

BEACONLISTENTO 0 – 0xFFFF Optional – for passive scanning

mode, determines the amount of

time (Kµsec) to listen for a beacon

on each channel (default is 40

Kµsec).

PROBEENERGYTO 0 – 0xFFFF Optional – for active scanning mode,

determines the amount of time to lis-

ten for RF energy following a probe

(default is 3 Kµsec).

PROBERESPON-

SETO 0 – 0xFFFF Optional – for active scanning mode,

determines the amount of time to

wait for a probe response after

energy is detected on a channel

(default is 20 Kµsec).

STATIONARY ON, OFF,

YES, NO Optional – indicates whether or not

the station is mobile (default is

OFF).

PROBEDELAY 0 – 0xFFFF Optional – indicates how long to wait

on a frequency before sending a

probe request (default is 3 Kµsec).

OFFSCANINTERVAL 0 – 0xFFFF Optional – how often to attempt to

use the “off line” scanning method to

search for new Access Points

(default is 0 which disables off line

scanning).

OFFSCANDURATION 0 – 0xFFFF Optional – how long to use the “off

line” scanning method during each

attempt (default is 0 which disables

off line scanning).

Drivers for Special Installations

Additional system performance adjustments can be made

with the following parameters.

Table 2.10 - Infrastructure Keywords

Keywords Value Description

SSID 1 to 32 charac-

ter string This parameter must match the

SSID of the system for proper infra-

structure operation.

BEACONLOSTTIME 0 – 0xFFFF Optional – determines the interval of

consecutively missed beacons

which will cause a re-scan (default is

500 Kµsec).

REFRESHINTERVAL 0 – 0xFFFF Optional – determines the amount of

time in seconds between refresh

packets to the Access Point. Use

0xFFFF to disable (default is 10,000

Kµsec [10 sec]).

SPECIFIEDAP Any IEEE MAC

address except

broadcast and

multicast

Optional – forces association to the

specified Access Point.

SPECIFIEDAP2 Any IEEE MAC

address except

broadcast and

multicast

Optional – forces association to one

of the specified Access Points.

SPECIFIEDAP3 Any IEEE MAC

address except

broadcast and

multicast

Optional – forces association to one

of the specified Access Points.

SPECIFIEDAP4 Any IEEE MAC

address except

broadcast and

multicast

Optional – forces association to one

of the specified Access Points.

Drivers for Special Installations

Table 2.10 - Infrastructure Keywords (Continued)

Keywords Value Description

SPECIFIEDAPTO 0 – 0xFFFF Optional – time in Kµsec to attempt

to associate to a specified Access

Point before searching for any avail-

able Access Points (with matching

SSID) (default is 10,000 Kµsec [10

sec]).

AUTHTIMEOUT 0 – 0xFFFF Optional – time to attempt to authen-

ticate to an Access Point (default is

2,000 Kµsec [2 sec]).

AUTHTYPE OFF, OPEN,

HAREDKEY,

ENCRYPTONLY

Optional – determines the level of

security of the wireless network

(default is OPEN).

ASSOCIATIONTO 0 – 0xFFFF Optional – indicates the maximum

amount of time the client will wait for

a response to an association

request from the Access Point

(default is 2,000 Kµsec [2 sec]).

Drivers for Special Installations

Ad hoc system operation is accomplished with the following

group of variables.

Table 2.11 - Ad Hoc Keywords

Keywords Value Description

JOINNETTO 0 – 0xFFFF Optional – determines the amount of

time that an ad hoc station will scan

before starting its own network

(default is 10,000 Kµsec [10 sec]).

BEACONPERIOD 0 – 0xFFFF Optional – specifies the beaconing

interval in Kµsec. (default is 100

Kµsec).

DSCHANNEL 0-14 Optional – this parameter is valid

only for a node that starts a network.

This is the channel identifier specify-

ing the frequency to communicate

on. For all other nodes, the radio will

scan for the proper frequency.

Default is 0, which will cause the

radio to pick a default channel

appropriate for its programmed

carrier set. Any other value (1-14)

will be validated against the

programmed carrier set and rejected

if invalid.

ATIMDURATION Between 0 and

less than the

beacon interval

Ad hoc only – specifies the length of

time for ATIMs following a beacon

(this value must be non-zero for

PSP ad hoc operation) (default is 5).

This value is only used when start-

ing a new network. When joining a

network, the value currently in use

will be adopted.

Drivers for Special Installations

The following is a list of keywords that will control the host

system hardware resources the Aironet 4000 Series Wire-

less LAN Adapter requires.

NOTE: At a minimum, the PC Card requires 64

consecutive 16-bit I/O ports, one non-sharable Interrupt

and one PC Card type II slot.

If you are using card services, these resources will be

assigned for you. However, you may override the card ser-

vices resource assignments by including the PortBase and/

or INT/IRQ keywords in the appropriate configuration file.

If you are not using card services, your host system must

have an Intel 82365 or compatible PC Card controller chip.

The 4000 Series driver will then configure the PC Card

controller chip directly and each of the following parameters

should be specified in your configuration file.

Drivers for Special Installations

Table 2.12 - PC Card Keywords

Keywords Value Description

PORTBASE 0 – 0xFFFF Optional – specifies the starting

address for a block of 64 consecu-

tive 16-bit I/O ports. Make sure the

block of I/O addresses does not

overlap the address of another

device in the machine. This can be

used to override a card service

assignment. If card services are not

used, this will default to 0x140.

PORT Only valid in NET.CFG file (same as

PORTBASE).

INT 2-15 Optional – specifies the hardware

interrupt the PC Card will use. The

Interrupt must be unique (i.e. not

used by another device in the

machine). This can be used to over-

ride a card service assignment. If

card services are not used, this will

default to 11.

IRQ Same as INT.

SOCKET 0-7 Optional – If card services are used,

this keyword is ignored. If card ser-

vices are not used, this is the PC

Card socket the PC Card is inserted

into (default is 0).

MEMORY 0xC000 –

0xDF00 Optional – If card services are used,

this keyword is ignored. If card ser-

vices are not used, this is a block of

memory the driver will use to view

the PC Card CIS (default is

0xD000). In the NET.CFG file the

parameter is D0000, not 0xD000.

MEM Same as MEMORY.

Drivers for Special Installations

Section 3: Using the WinDGS Utilities

Section 3

Using the WinDGS Utilities

WinDGS is used to perform user level diagnostics on your

Aironet Wireless LAN Adapter Card in the Windows 95, 98,

or Windows NT operating system environment.

WinDGS Commands Menu

The Commands Menu includes:

•Select Card

• Load New Firmware

• Edit Properties

•Statistics

•Status

•Link Test

• Site Survey

• Radio Off/On

•Exit

Select Card

This allows another installed Aironet Wireless LAN Adapter

Card to be chosen. The property screens will change to

reflect the parameters specific to each card type.

Load New Firmware

The firmware is contained in the card’s flash memory. Flash

memory allows for easy updating of the firmware as neces-

sary.

Section 3: Using the WinDGS Utilities

Upgrading Firmware for Windows 95

or Windows 98

The WinDGS program is used to load new firmware.

To load new firmware:

1. Make sure the PC Card is up and running.

2. Select Commands.

3. Select Load New Firmware.

4. Select Look In....Use the drop down button to select

the appropriate path and image file.

5. Select Open. This will flash the card with the selected

image.

Upgrading Firmware for Windows 3.11 and DOS

The FLSH3545.COM program is used to load new firmware

to systems operating under DOS and Windows 3.11.

To load new firmware:

1. Before upgrading the firmware, uninstall the driver or

reboot the computer and do not load the driver during

the boot process.

2. Type FLSH3545 at the DOS prompt.

3. Enter the option (see Table below).

NOTE: If using card and socket services, no options

should be required.

Section 3: Using the WinDGS Utilities

4. Type the filename of the new firmware.

5. Press Enter.

Edit Properties

WinDGS allows you to change the configuration parame-

ters of your currently installed Aironet 4000 Series Wireless

LAN Adapter. See “Using Edit Properties” on page 3-49 for

details on this command.

Statistics

The Statistics screen shows the current statistics from the

PC Card. Statistics are updated at the rate specified by the

Screen Update Timer. Clear the current statistics by clicking

on Reset. Exit the Statistics screen by clicking on OK, or by

clicking on the X in the upper right hand corner of the dialog

box.

Status

The Status screen shows the current status from the PC

Card. Status is updated at the rate specified by the Screen

Update Timer. Exit the Status screen by clicking on OK, or

Utility Description

-p Specifies the starting address for a block of 64 consecutive

16-bit I/O ports. Make sure the block of I/O addresses does

not overlap the address of another device in the machine.

This can be used to override a card service assignment. If

card services are not used, this will default to 0x140.

-s Optional – If card services are used, this parameter is

ignored. If card services are not used, this is the PC Card

socket the PC Card is inserted into (default is 0).

-m If card services are used, this parameter is ignored. If card

services are not used, this is a block of memory the driver will

use to view the PC Card CIS (default is 0xD000).

-q Quiet Mode, no messages will appear while flash upgrade is

in progress.

Section 3: Using the WinDGS Utilities

by clicking on the X in the upper right hand corner of the

dialog box.

Link Test

You can use WinDGS to assess the performance of RF

links. TCP/IP protocol must be installed on your system to

run this link test. See the Windows 95/98/NT Help section

for more information on installing and setting up TCP/IP. An

IP address must also be configured for the Access Point.

1. From the link test command menu, enter the following

parameters:

• IP address of Aironet Access Point:

This parameter specifies the IP address of the

Access Point with which you want to test the RF link.

Set this value before running the link test.

•Number of Packets:

This parameter specifies the number of packets the

link test will attempt to send. The display will show

the number of packets of the specified size that are

successfully transmitted and received. This parame-

ter is ignored if Continuous Link Test is selected.

•Packet Size:

This parameter specifies the size of the data packet

to be sent to the Aironet Access Point. Be aware that

the TCP/IP stack that comes with Windows 95 will

fragment packets greater than 512 bytes. Therefore,

the number of packets transmitted will not match the

number of packets received (even if none are lost) if

the packet size is greater than 512 bytes.

•Continuous Link Test:

Selecting this item causes the link test to run contin-

uously until Stop, OK, or Cancel is selected. The

Number of Packets parameter is ignored if Continu-

ous Link Test is selected.

2. Once the parameters have been entered, click on the

Start button at the bottom of the dialog box to start the

Section 3: Using the WinDGS Utilities

link test. When the link test is running, necessary statis-

tics will be displayed and updated periodically.

3. To stop the link test, click on Stop, OK, or Cancel at the

bottom of the dialog box. Once the link test has sent the

number of packets specified, the Stop button will toggle

back to a Start button.

Using Windows 3.11 or DOS to Perform a Link Test

Using Telnet

To perform the link test using a telnet session:

1. Install the drivers.

2. Configure the drivers for network operation.

3. Ensure unique IP assignments of mobile/portable

PC Card devices and Aironet Access Point.

4. Set up an Aironet Access Point for the intended

operation (set fragmentation thresholds, RTS

thresholds, etc.)

5. Start the operating system on the mobile station.

6. Configure the adapter.

7. Make sure the mobile station is associated to the

Aironet Access Point.

8. Start a telnet session on the mobile station to the

Aironet Access Point. Depending on the system in

use, the telnet application may have logging and

note taking capability. If so, enable these modes.

9. Navigate through the Aironet Access Point menu to

the link test option. See the appropriate Access

Point Technical Reference Manual for more infor-

mation.

10. Set up the test options to accurately model the

system.

11. Set the test for continuous operation with a

1 second delay.

12. Begin traversing the area around the Aironet

Access Point to determine its coverage. If logging

Section 3: Using the WinDGS Utilities

and notes are not possible with the telnet applica-

tion, maintain a manual log.

The telnet session packets are interspersed with test

packets which may increase the round-trip time for some

frames. The link test will show progress changes as the test

is being conducted.

The first-time delivery success rate for the packet may not

be important for transaction-based systems, and can result

in a slightly larger range. Using longer packets can provide

some degree of safety margin in the range estimate.

NOTE: Roundtrip time will be effected by the telnet

session maintenance.

Using Windows 95 or Windows 98 to Perform

a Link Test

You may use either:

•Telnet

•The link test or site survey commands in WinDGS

•Linkscope

Site Survey

To perform a meaningful site survey, you need to conduct a

test that will accurately model the intended use of the sys-

tem. It is important to perform a site survey using equipment

which is similar to the equipment that will be implemented.

Common survey items include:

•Transmit power

•Antenna type(s)

•Antenna location(s)

•Packet (fragment) size

•Interference

You should always conduct a site survey with all variables

Section 3: Using the WinDGS Utilities

set to the operational values. You should also try to perform

the survey during the time the RF link will generally be func-

tioning with all other systems and noise sources opera-

tional. For efficiency, you should execute the site survey

application entirely from the mobile station.

The link test tool helps determine the RF network coverage.

The results of the link test will help eliminate low RF signal

level areas that can result in loss of connection between the

PC Card and the Aironet Access Point.

It is important to remember the information being displayed

is from the Aironet Access Point’s viewpoint. Therefore,

packets sent are from the Aironet Access Point to the PC

Card client. Packets received are from the PC Card to the

Aironet Access Point. Signal quality is an estimate of the

signal strength recorded at the time of packet reception by

the radio.

Note: If your Wireless LAN Adapter contains new firmware,

you can use WinDGS’s Active Mode Survey. See “Using the

Site Survey Active Mode Feature” on page 3-57 for details.

The Overall Link Quality rating on the Site Survey window

indicates the ability of the Aironet Wireless LAN Adapter to

successfully communicate with an Access Point. Ratings

are Excellent, Good, Fair, and Poor. The rating is derived

from the Current Signal Strength (PC4500/PC4800) and

Current Signal Quality.

•Excellent: Both values are greater than 75%

•Good: Both values are greater than 40%, but one or

both are less than 75%

•Fair: Both values are greater than 20% but one or both

are less than 40%

•Poor: One or both values are less than 20%

Section 3: Using the WinDGS Utilities

Radio Off/On

Radio Off/On allows you to selectively turn off or on the

power to the radio. Turning the radio off prevents all RF

energy from being transmitted by the PC Card.

Exit

Closes all windows and exits WinDGS.

Options Menu

The Options Menu includes:

•Preferences

•Core Dump

•NDIS Driver Core Dump

Preferences

The WinDGS Preferences allow you to customize various

parameters that control the operation of WinDGS. For

example, you can set the rate at which the values are

updated in the status and statistics screens via the Screen

Update Timer. You can also set the Save Properties

Options, which controls what is done with changes to the

current settings.

Screen Update Timer

The Screen Update Timer controls how often the statistics

and status screens are updated. The screen can be

updated in one second increments, from once a second to

once every 60 seconds. The default is once every five sec-

onds. You can use either the edit box or the slider to change

this value.

Section 3: Using the WinDGS Utilities

Status Bar Options

Use the Status Bar Options to include seconds on the clock

display on the WinDGS main screen.

Core Dump

Core Dump allows you to perform a core dump of the Wire-

less LAN Adapter’s firmware. Enter file names for core

dumps 1 and 2, or accept the defaults (C:\Aironet\Win-

DGS4_07\Core4800.1 and Core4800.2). Click the Do Core

Dump button to perform the dump.

NDIS Driver Core Dump

NDIS Driver Core Dump allows you to perform a core dump

of the Wireless LAN Adapter’s drivers. Enter a file name for

the core dump, or accept the default (C:\Aironet\Win-

DGS4_07\Core4800.cor). Click the Do Core Dump button

to perform the dump.

Using Edit Properties

The Edit Proper-

ties screen, which

you access from

the Commands

menu, includes

four “pages,”

which you select

by clicking the

tabs at the top of

the window:

•System

Parameters

• Network

Parameters

Section 3: Using the WinDGS Utilities

•RF Network Parameters

•Advanced (Infrastructure or Ad Hoc)

Each sub-screen is described below.

System Parameters

System parameters include:

•Name

•SSID

•Network Type (Infrastructure or Ad Hoc)

•Constant Awake Mode (CAM)

•Power Save Mode

•Fast Power Save Mode

•Maximum Power Save Mode

Name

The station name is displayed in the table of connected

devices on the Access Point. It provides a logical name

to determine which machines are connected without

having to memorize every MAC address. The name

can be up to 16 characters.

SSID

The Service Set Identifier (SSID) controls access to a

given wireless network. This value MUST match the

SSID of any/all Access Points that you want to commu-

nicate with. If the value does not match, access to the

system is not granted. The SSID can be up to 32 char-

acters (case sensitive).

Network type (Infrastructure Mode)

This mode is used to set up a connection to a wired

network, such as Ethernet or Token Ring. This mode

requires an Access Point to gain access to the wired

network.

Section 3: Using the WinDGS Utilities

Network type (Ad Hoc Mode)

This mode is used to set up a small, temporary network

between two or more computers. For example, you

might set up an ad hoc network between computers in

a conference room so users can share information in a

meeting.

Constant Awake Mode (CAM)

Constant Awake Mode is the normal mode for desktop

machines or other machines where power consumption

is not an issue. It keeps the radio powered up continu-

ously so there is little latency for responding to

messages. This mode is recommended for devices

where high availability is desired.

Power Save Mode

Power Save Mode is recommended for devices where

power consumption is a major concern, such as small

battery powered devices. If the client node is powered

from an AC line, PSP should not be used. Power Save

Mode causes the Access Point to buffer incoming mes-

sages. The Aironet 4000 Series Wireless LAN Adapter

must wake up periodically and poll the Access Point to

see if there are any buffered messages waiting. The PC

Card can request each message and then go back to

sleep.

Fast Power Save Mode

Fast Power Save Mode (Fast PSP Mode) switches

between PSP and CAM based on network traffic. When

retrieving a high number of packets, Fast PSP Mode

will switch to CAM to retrieve the packets. Once the

packets are retrieved, it switches back to PSP.

Maximum Power Save Mode

Maximum Power Save Mode (Max PSP Mode) can only

be used in conjunction with PS or Fast PSP Modes.This

mode allows the Aironet 4000 Series Wireless LAN

Section 3: Using the WinDGS Utilities

Adapter to conserve the most power while still main-

taining an infrastructure connection. Using Max PSP

Mode conserves power but will reduce throughput.

Network Parameters

User modifiable parameters are limited to the choice of

MAC Address:

•Factory MAC Address: This is the default MAC

address which is guaranteed to be unique. Unless you

have a very good reason to define your own MAC

address, it is STRONGLY RECOMMENDED that you

use the factory MAC address.

•User Defined MAC Address: If you must define your

own MAC address, you can enter it here. If you do not

use a unique value, you may not be able to communi-

cate to your wired network or you may disrupt other net-

work devices. For this reason, it is STRONGLY

RECOMMENDED that you use the factory MAC

address. The MAC address is 12 hexadecimal digits.

You do not need to use delimiters, but you can use

spaces or the colon character.

RF Network Parameters

RF Network Parameters include:

•Fragment Threshold: This parameter defines a thresh-

old above which the RF packet will be split up or frag-

mented. If a packet is fragmented or transmission of

part of it is interfered with, only the portion that was

unsuccessful would need to be re-sent. The throughput

will generally be lower for fragmented packets since the

fixed packet overhead consumes a higher portion of the

RF bandwidth.

•Data Retries: This parameter defines the number of

times a packet will be re-sent if the initial transmission is

unsuccessful. If the network protocol automatically re-

tries itself, set this to a small value. A “bad” packet sta-

Section 3: Using the WinDGS Utilities

tus will be sent up the protocol stack more quickly so

the application can re-transmit the packet.

•Basic Data Rate: This parameter determines the data

rate used to transfer all management frames by the cli-

ent device when associated within a given Basic Ser-

vice Set (BSS). When operating in Infrastructure Mode,

this parameter should be set to correspond to the

Access Point setting. When operating in Ad Hoc Mode,

all stations should have the same setting.

•Authentication type: This parameter controls the vali-

dation of the WEP Key. Shared Key Authentication vali-

dates that the client is using the same WEP Key as the

Access Point. The Access Point sends a known, un-

encrypted “challenge packet” to the client. The client

then encrypts the challenge packet and sends it back to

the Access Point. The Access Point then attempts to

decrypt the encrypted challenge packet, and sends an

Authentication response packet indicating the success

or failure of the decryption back to the client. Open

Authentication does not check for a matching WEP

Key. The Shared Key selection is not available if the cli-

ent’s WEP Key is not set.

•Modulation: This parameter determines the type of

radio modulation that the Wireles LAN Adapter uses at

the 5.5 Mbps and 11 Mbps data rates. Older versions of

firmware use MOK modulation, while newer firmware

versions use the IEEE 802.11 Standard CCK modula-

tion. The modulation that the PC4800 uses must match

the modulation of the Access Point (in an Infrastructure

Mode configuration) or other Wireless LAN Adapters (in

an Ad Hoc Mode configuration). Otherwise, the radio

will not communicate with the other devices.

Model Allowable Selections

4500 1 Mbps or 2 Mbps

4800 1 Mbps, 2 Mbps, 5.5 Mbps, or 11 Mbps

Section 3: Using the WinDGS Utilities

•Supported Data Rates: This parameter specifies the

data rates that will be supported by a given radio device

in the BSS.

Advanced (Infrastructure)

The following parameters are contained in both the Infra-

structure and Ad Hoc Modes:

•Antenna Mode

•Specified Access Point

•RTS Threshold

•RTS Retry Limit

Antenna Mode

Three options are available for the type of antenna you

have connected to the Aironet 4000 Series Wireless

LAN Adapter:

•Antenna Diversity: This allows the PC Card to use

the stronger signal from the two antenna ports.

Diversity can help the radio maintain the RF

connection in areas of interference. Due to the

nature of how RF signals are affected by the

surroundings, one antenna may be in an RF “null”

where the signal is very weak, but the other

antenna (even though it is only a small distance

away) may have a stronger signal strength. The PC

Card would automatically select the antenna that

has the highest signal strength. Antenna Diversity

is the recommended setting for the standard

Snap-On antenna.

Model Allowable Selections

4500 1 Mbps, 1_2 Mbps, or 2 Mbps

4800 1 Mbps, 1_2 Mbps, 1_5.5 Mbps, 1_11 Mbps

2 Mbps, 2_5.5 Mbps, 2_11 Mbps,

5.5 Mbps, 5.5_11 Mbps, or 11 Mbps

Section 3: Using the WinDGS Utilities

•Right Antenna Only (J1): Choose this option if the

antenna you are using is connected to the right

hand antenna port and you are not using the

standard Snap-On antenna. The PC Card will not

attempt to communicate using the left hand

antenna port since no antenna is connected to it.

•Left Antenna Only (J2): Choose this option if the

antenna you are using is connected to the left hand

antenna port and you are not using the standard

Snap-On antenna. This tells the PC Card not to

attempt to communicate using the right hand

antenna port since no antenna is connected to it.

Specified Access Point

This parameter is the MAC address of the preferred

Access Point you want to associate with. It is important

to note that if you specify the Access Point, you MAY

associate to another Access Point if the Specified

Access Point is not found. If you roam out of range, you

will probably associate with another Access Point.

Setting a Specified Access Point will slow down the

roaming process. Thus, for normal operation for the

majority of users, leave this field blank.

RTS Threshold

This parameter controls what size data packet the low

level RF protocol issues to an RTS packet. There are

several trade-offs to consider when setting this

parameter. Setting this parameter to a small value

causes RTS packets to be sent more often, consuming

more of the available bandwidth, therefore reducing the

apparent throughput of other network packets. How-

ever, the more often RTS packets are sent, the quicker

the system can recover from interference or collisions.

Refer to the IEEE 802.11 Standard for more information

on the RTS/CTS mechanism.

Section 3: Using the WinDGS Utilities

RTS Retry Limit

This parameter controls the number of times the PC

Card will re-send the RTS packet if it does not receive a

CTS from the previously sent RTS packet. Setting this

to a large value will decrease the available bandwidth

whenever interference is encountered, but will make

the system more immune to interference and collisions.

Refer to the IEEE 802.11 Standard for more information

on the RTS/CTS mechanism.

Advanced (Ad Hoc/IBSS)

In Ad Hoc Mode, you can also modify the following

parameters:

•Channel

•Beacon Period

•Wake Duration

Channel

This parameter specifies the channel identifier the unit

will use if it must start its own network. For all other situ-

ations, the radio will scan for the proper frequency. See

Appendix C for channel identifier parameters.

Beacon Period

This parameter specifies the duration between beacon

packets that are used by IEEE 802.11 systems to

synchronize the “hops” (change to another frequency).

The beacon packet contains timing information and hop

pattern information that is broadcast over the airwaves.

Any station that can hear the beacon packet can then

synchronize their internal timer so that it can hop at the

correct time. The default beacon period is one-half of

the dwell period so two beacons are transmitted per

hop dwell period (default is 100 Kµsec). Refer to the

IEEE 802.11 Standard for more information on the

timing and scanning mechanism.

Section 3: Using the WinDGS Utilities

Wake Duration

This parameter specifies the amount of time per Hop

Dwell Period that the adapter stays awake listening for

data packets. This is only used in Power Save Mode.

Using the Site Survey Active

Mode Feature

If your PC4800 Wireless LAN Adapter contains the latest

firmware, and if you have the latest drivers on your system,

you can use the Site Survey Active Mode feature to set up a

customized link test.

When you select

Site Survey from

the Commands

menu and click

the Setup but-

ton at the bot-

tom of the

window, the

Setup window

appears. Each

setting is

described

below.

Destina-

tion MAC

Address

This parameter specifies the Access Point that will be

involved in the test. The default is the MAC address of the

AP the Aironet Wireless LAN Adapter is currently associ-

ated with.

Section 3: Using the WinDGS Utilities

Continuous Link Test

If you click this check box, the Active Mode test will run

repeatedly until you press the OK or Stop buttons on the

Site Survey page. (The test will loop repeatedly for the num-

ber of packets you specify on the Number of Packets set-

ting.)

Destination is Another Aironet Device

Click this check box if the Access Point you named in the

Destination MAC Address field is an Aironet Access Point.

Number of Packets

This parameter sets the quantity of packets that will be sent

during the test.

Packet Size

This parameter sets the size of the packets that will be sent

during the test. You should use a packet size that will be

typical during normal use of the system.

Data Retries

This parameter sets the number of times a transmission will

be retried if an ACK is not returned by the destination

device. Click None for no retries, or Default Retries for the

firmware’s default value for retries.

Data Rates

This parameter sets the bit rate at which packets will be

transmitted. No rate shifting will occur during the test.

Section 3: Using the WinDGS Utilities

Delay Between Packets

This parameter sets the delay (in milliseconds) between

successive transmissions.

Packet Tx Type

This parameter sets the packet type that will be used during

the test. If you select Unicast, the system will expect an

ACK back from the destination, and retries can occur. If you

select Multicast, no packet retries will occur during the test.

Packet Success Threshold

This parameter controls the red line on the “Percent Suc-

cessful” histogram. Percentages greater than or equal to

this value will show up as green bars, while percentages

below this value will show up as yellow bars on the Percent

Successful histogram.

Section 3: Using the WinDGS Utilities

Using the Linkscope Utility

The Linkscope utility provides a graphical display of:

•Signal Quality

•Signal Strength

Linkscope determines

the performance of the

RF link between a PC

Card and an Aironet

Access Point. Any Win-

dows 95, Windows 98,

or Windows NT unit

associated to an Airo-

net Access Point can

run the linkscope test.

Signal strength is dis-

played along the verti-

cal axis of the graphical

display. Signal quality is displayed along the horizontal

axis. The combined result is represented by a diagonal

line. The Aironet Access Point associating with the PC

Card is indicated along the bottom of the display as well

as its MAC address. For more information on the Airo-

net Access Point testing procedures, see the appropri-

ate Access Point Technical Reference Manual.

Error Messages and Troubleshooting

Section 4

Error Messages and Trouble-

shooting

The Wireless LAN Adapter provides LED messages and

error codes. This section provides the general procedures

for correcting common problems encountered when

installing the PC Card system.

Indicator LEDs

The PC Card has two indicator LEDs (green and amber) on

the face of the card.

The green indicator is the Link Integrity/Power LED. It lights

when the card is receiving power and flashes slowly when

the PC Card is linked with the network.

The amber indicator is the Link Activity LED. It flashes when

the PC Card is receiving or transmitting data or in a pattern

to indicate an error condition.

See Tables 4.1 and 4.2 for an explanation of the LED

Messages.

Error Messages and Troubleshooting

Table 4.1 – Green LED Operating Messages

Table 4.2 – Amber LED Operating Messages

Green LED Condition

Off No power or error

Flashing Quickly Power on, self-test OK, scanning for network

Flashing Slowly Associated with an infrastructure network

Amber LED Green LED Condition

Flashing Continuously on or

flashing slowly PC Card is transmitting or

receiving data while

associated with an Access

Point

Flashing in a Pattern Continuously on Indicates an error

condition

Error Messages and Troubleshooting

If Your Radio Fails to Establish Contact

• Change your location or the location of the antenna by

a few feet and try again.

• Make sure the antenna is securely attached.

• Make sure the PC Card is securely inserted in the PC

Card slot.

• Make sure the receiving equipment is turned on and

operating.

• Make sure the receiving equipment is properly con-

nected to the host computer.

• Check that all parameters are set properly for both the

PC Card and the Aironet Access Point.

If the radio fails to establish contact, contact Aironet Techni-

cal Support for additional assistance:

Phone - (330) 664-7903

Fax - (330) 664-7990

e-mail - techsupp@aironet.com

http://www. aironet.com

Error Messages and Troubleshooting

Appendix A: Aironet Wireless LAN Adapter Overview

Appendix A

Aironet Wireless LAN Adapter

Overview

The Aironet 4800 Series Wireless LAN Adapter is a PC

Card radio module that provides transparent wireless data

communications between fixed, portable, or mobile devices

and other wireless devices or a wired network infrastructure

(Ethernet or Token Ring). Host devices can be any device

equipped with a PC Card Type II or Type III slot. These

devices include:

• Desktop systems

• Portable laptops

• Notebook computers

• Personal digital assistants

• Pen based computers

• Other data collection devices

The PC Card is fully compatible when used in a device

supporting Plug-and-Play technology.

The PC Card can also be built into peripheral devices such

as printers to provide a transparent wireless connection to a

wired network.

Appendix A: Aironet Wireless LAN Adapter Overview

Safety Information

The FCC with its action in ET Docket 96-8 has adopted a

safety standard for human exposure to radio frequency

(RF) electromagnetic energy emitted by FCC certified

equipment. The Aironet products meet the uncontrolled

environmental limits found in OET-65 and ANSI C95.1,

1991. Proper operation of this radio according to the

instructions found in this manual will result in exposure

substantially below the FCC’s recommended limits.

•Do not touch or move antenna(s) while the unit is

transmitting or receiving.

•Do not hold any component containing the radio so that

the antenna is very close or touching any exposed parts

of the body, especially the face or eyes, while transmit-

ting.

•Do not operate a portable transmitter near unshielded

blasting caps or in an explosive environment unless it

is a type especially qualified for such use.

•Do not operate radio or attempt to transmit data unless

the antenna is connected; if the antenna is not con-

nected, the radio may be damaged.

Snap-On Antenna

Always orient the antenna so that it is at least 5 cm (2

inches) away from your body.

Appendix A: Aironet Wireless LAN Adapter Overview

Dipole Antenna

Always orient the antenna so that it is at least 15 cm

(six inches) away from your body.

High Gain Antennas

High gain wall mount or mast mount antennas are

designed to be professionally installed and should be

located at a minimum distance of 30 cm (12 inches) or

more from your body. Please contact your professional

installer, VAR, or antenna manufacturer for proper

installation requirements.

Warning for Laptop User

To comply with the FCC RF exposure limits, it is recom-

mended when using a laptop with the snap-on antenna,

that the antenna should not be positioned closer than 5

cm (two inches) from your body or nearby persons for

extended periods of time while it is transmitting (or

operating). If the antenna is positioned less than 5 cm

(two inches) from the user, it is recommended that the

user limit exposure time.

Other Devices in the Wireless Network

Refer to the User’s Guide and Technical Reference

manual for the Access Point, Universal Client, or Bridge

for additional information.

Appendix A: Aironet Wireless LAN Adapter Overview

Radio Characteristics

The PC Card operates in the 2.4 GHz license-free Industrial

Scientific and Medical (ISM) band. Data is transmitted over

a half-duplex radio channel operating up to 2 Megabits per

second (Mbps) for the PC4500 or up to 11 Mbps for the

PC4800.

Direct Sequence Radio Technology

The Aironet 4800 Series Wireless LAN Adapter uses Direct

Sequence Spread Spectrum (DSSS) transmission originally

developed for military “anti-jamming” and “low probability of

intercept” radio systems. The signal is transmitted over a

wide frequency range, using multiple frequencies simulta-

neously. This protects the data transmission from interfer-

ence.

If a particular frequency encounters a level of noise and/or

interference, there is enough redundancy built into the sig-

nal on other frequencies that the Aironet 4800 Series Wire-

less LAN Adapter will usually still be successful in its

transmission.

Data Transparency and Protocols

The Aironet 4800 Series Wireless LAN Adapter transports

data packets transparently as they move through the wire-

less infrastructure. The PC Card operates similarly to a

standard network product except the wire is replaced with a

radio connection. No special wireless networking functions

are required. All existing applications, which operate over a

network, will operate using the Aironet 4800 Series Wire-

less LAN Adapter.

Appendix A: Aironet Wireless LAN Adapter Overview

Protocols Supported

The Aironet 4800 Series Wireless LAN Adapter can be

used in a variety of infrastructure configurations. Aironet

Access Points (AP4500 and AP4800) provide connections

to Ethernet or Token Ring Networks. When using the Airo-

net standard device drivers, the PC Card is fully compliant

with the following protocols and wired networks:

Radio Ranges

This section provides general guidelines on factors that

influence network performance (see Section 4 - Site

Survey and Link Test).

Site Survey

Because of differences in component configuration,

placement and physical environment, every network

application is a unique installation. Before installing the

system, users should perform a site survey to deter-

mine the optimum utilization of networking components

and to maximize range, coverage and network perfor-

mance.

Here are some operating and environmental conditions you

should consider:

•Data Rates. Sensitivity and range are inversely propor-

tional to data bit rates. The maximum radio range is

achieved at the lowest workable data rate. There will be

Drivers Operating System

ODI DOS based driver for Novell NetWare

NDIS2 MS DOS, Windows 3.xx

NDIS3 Windows 95, Windows 98, Windows NT

Packet MS DOS, Windows 3.xx

Appendix A: Aironet Wireless LAN Adapter Overview

a decrease in receiver threshold sensitivity as the radio

data rate increases.

•Antenna Type and Placement. Proper antenna config-

uration is a critical factor in maximizing radio range. As

a general guide, range increases in proportion to

antenna height.

For a detailed explanation of antenna types and config-

urations along with guidelines on selecting antennas for

specific environments, see the Aironet Antenna Guide,

document number 710-003725.

•Physical Environments. Clear or open areas provide

better radio range than closed or filled areas. Also, the

less cluttered the work environment, the greater the

range.

•Obstructions. A physical obstruction such as metal

shelving or a steel pillar can hinder the performance of

the PC Card, particularly when using the small Snap-

On antenna. Avoid locating the computing device and

antenna in a location where there is a metal barrier

between the sending and receiving antennas.

•Building Materials. Radio penetration is greatly influ-

enced by the building material used in construction. For

example, drywall construction allows greater range

than concrete blocks. Metal or steel construction is a

barrier to radio signals.

Link Test

The link test tool is used to determine RF coverage.

The test results help the installer eliminate low RF sig-

nal level area that can result in loss of connection.

Radio Antenna

The Snap-On Diversity antenna comes standard with the

PC Card and provides omni-directional coverage.

Appendix A: Aironet Wireless LAN Adapter Overview

A benefit of the diversity antenna system is improved cover-

age. At the edges of the RF coverage or fringe areas, there

are very often multiple signals reaching the receiver, all

from the same transmitter. These signals travel in different

paths (multipath) and are caused by reflection and shadows

of the RF signals. When the signals combine, the receiver

may have trouble decoding the data. The Aironet radio’s

ability to switch and sample between these antennas allows

it to select the optimum antenna for receiving the packet.

Optional antennas are offered for the PC Card. Consult the

Aironet Antenna Guide (document number 710-003725) for

more information.

Security Features

The Aironet 4800 Series Wireless LAN Adapter employs

Direct Sequence Spread Spectrum Technology, previously

developed for military “anti-jamming” and “low probability of

intercept” radio systems.

The Aironet Access Point must be set to the same Service

Set Identifier (SSID) as all other Aironet devices on the

wireless infrastructure. Units with a different SSID will not

be able to directly communicate with each other.

Terminology

When configuring your system, and when reading this man-

ual, keep in mind the following terminology:

Association – Each root unit or repeater in the infrastruc-

ture contains an association table that controls the routing

of packets between the Access Point and the wireless infra-

structure. The association table maintains entries for all the

nodes situated below the Access Point on the infrastructure

including repeaters and client nodes.

End Node – A client node that is located at the end of the

Network Tree.

Appendix A: Aironet Wireless LAN Adapter Overview

Infrastructure – The wireless infrastructure is the commu-

nications system that combines Access Points, mobile

nodes and fixed nodes. Access Points within the infrastruc-

ture can be either root units, which are physically wired to

the LAN backbone, or can act as wireless repeaters. Other

RF enabled devices serve as fixed nodes or mobile client

nodes.

Parent/Child Node – Refers to the relationships between

nodes in the wireless infrastructure. The complete set of

relationships is sometimes described as a Network Tree.

For example, the Access Point (at the top of the tree) would

be the parent of the end nodes. Conversely, the end nodes

would be the children of the Access Point.

Power Saving Protocol (PSP) and Non-Power Saving

Protocol – The Power Saving Protocol allows computers

(usually portable computers) to power up only part of the

time to conserve energy. If a client node is using the Power

Saving Protocol to communicate with the network, the Airo-

net Access Point must be aware of this mode and imple-

ment additional features such as message store and

forward. If the client node is powered from an AC line, PSP

should not be used.

Repeater – A repeater is an Access Point that extends the

radio range of the infrastructure. A repeater is not physically

attached to the wired LAN, but communicates via radio to

another Access Point, which is either a root unit or another

repeater.

Root Unit – The root unit is an Access Point that is located

at the top, or starting point, of a wireless infrastructure. A

root unit provides the physical connection to the wired LAN

(such as Ethernet or Token Ring) and contains configura-

tion information in its association table that covers all nodes

that access the wired network (backbone). All Access

Points directly attached to the wired LAN backbone are root

units.

Appendix A: Aironet Wireless LAN Adapter Overview

System Configurations

The Aironet 4800 Series Wireless LAN Adapter can be

used in a variety of network system configurations. Aironet

Access Points (AP4500 or AP4800) provide connections to

your Ethernet or Token Ring networks or act as repeaters

increasing wireless communication range. The maximum

communication range is based on how you configure your

wireless infrastructure.

Examples of some common system configurations are

shown on the pages that follow, along with a description of

each.

Figure 1.1 - Ad Hoc Wireless LAN

An ad hoc wireless LAN is the simplest wireless LAN con-

figuration. In a wireless LAN, using an ad hoc network oper-

ating system (such as Windows for Workgroups or

Windows 95), all devices equipped with the PC Card can be

linked together and communicate directly with each other.

Appendix A: Aironet Wireless LAN Adapter Overview

Figure 1.2 - Wireless Infrastructure

In a wireless infrastructure, an Aironet Access Point is used

as a stand-alone root unit. The root unit is not attached to

any wired LAN (such as an Ethernet or Token Ring LAN),

but functions as a hub linking all stations together. This

configuration is similar to the ad hoc network, except the

Aironet Access Point serves as the focal point for communi-

cations. This increases the effective communication range

over the ad hoc LAN since both stations are not required to

be in direct communication range of each other.

Workstation Workstation

Access Point

(Root Unit)

Appendix A: Aironet Wireless LAN Adapter Overview

Figure 1.3 - Wireless Infrastructure with Workstations

Accessing a Wired LAN

A Micro-Cellular Network can be created by placing two or

more Aironet Access Points on a LAN.

The Aironet roaming protocols allow remote workstations to

move from one microcell domain to another. The process is

seamless and transparent. The connection to the file server

or host is maintained without disruption. This configuration

is useful with portable or mobile stations allowing them to

be directly connected to the wired network, even while mov-

ing about (roaming). When an infrastructure is configured

using multiple Aironet Access Points and/or repeaters, a

mobile station is automatically associated and re-associ-

ated to the Aironet Access Point which provides the best

performance. This is referred to as seamless roaming.

File Server

Wired LAN

Workstation Workstation Workstation

Aironet

Access Point

(Root Unit)

Aironet

Access Point

(Root Unit)

Appendix A: Aironet Wireless LAN Adapter Overview

Figure 1.4 - Extended Infrastructure Using Repeaters

An Aironet Access Point can be configured as a stand-

alone repeater to extend the range of your infrastructure, or

to overcome an RF blocking obstacle. The repeater for-

wards traffic between the Aironet 4800 Series Wireless LAN

Adapter equipped workstations and devices and the wired

LAN by sending packets to either another repeater or to

another Aironet Access Point attached to the wired LAN.

The data is sent through whichever route provides the

greatest performance for the client. Multiple repeater hops

can be supported in the path to the wired LAN.

File Server

Wired LAN

Workstation

Aironet

Access Point

(Root Unit)

Aironet

Access Point

(Repeater)

Workstation

Appendix A: Aironet Wireless LAN Adapter Overview

Coverage Options

The system architecture options of the wireless station and

Access Points provide for a variety of coverage alternatives

and flexibility. The system can be designed to provide a

wide coverage area with minimal overlap (Figure 1.5) or

coverage with heavy overlap (Figure 1.6). The latter

improves system performance and protection against

downtime in the event of a component failure.

Figure 1.5 - Minimal Overlap Coverage Option

By arranging the Access Points so the overlap in coverage

area is minimized, a large area can be covered with minimal

system cost. The total bandwidth available to each mobile

station will depend on the amount of data each mobile sta-

tion desires to transfer and the number of stations located in

each cell. Seamless roaming is supported as a mobile sta-

tion moves in and out of range of each Access Point,

thereby maintaining a constant connection to the wired

LAN. Each Access Point (and PC Card) must be configured

with the same Service Set Identifier (SSID) in order to pro-

vide the roaming capability.

Wired LAN

Appendix A: Aironet Wireless LAN Adapter Overview

Figure 1.6 - Heavy Overlap Coverage Option

By arranging the Access Points so the overlap in coverage

area is nearly maximized, a large number of mobile stations

can be supported in the same wireless infrastructure. How-

ever, units in overlapping coverage areas on the same fre-

quency will detect adjacent cell traffic and delay

transmissions that would cause collisions. This reduces the

aggregate radio system throughput. Heavy cell overlap is

not recommended for maximum system throughput. Due to

the redundancy in coverage overlap, system access is not

lost in the event of an Access Point failure. Upon failure of

the Access Point, the station will automatically roam to an

operational Access Point. With this architecture, all Access

Points and PC Card units must be configured with the same

Service Set Identifier (SSID).

Wired LAN

Appendix A: Aironet Wireless LAN Adapter Overview

Figure 1.7 - Multiple Overlapping Systems Coverage

Option

Multiple systems can operate in the same vicinity. The

architecture provides multiple channels, which can exist in

the same area with virtually no interference to each other. In

this mode, each system must be configured with different

Service Set Identifiers (SSID) and different channels, which

prevent clients from roaming to Access Points of a different

wireless system.

Wired LAN 1

Wired LAN 2

Appendix A: Aironet Wireless LAN Adapter Overview

Appendix B: PC Card Specifications

Appendix B

PC Card Specifications

LAN Drivers Supported

Table B.1 – Supported Drivers

Protocol Operating System

ODI DOS based driver for Novell Netware

NDIS 2 MS DOS, Windows 3.xx

NDIS 3 Windows 95, Windows 98, Windows NT

Packet MS DOS, Windows 3.xx

AppenBspecs.fm Page 81 Monday, October 18, 1999 1:54 PM

Appendix B: PC Card Specifications

Radio Specifications

Table B.2 – Radio Specifications

Item Specification Description

Radio Type Direct Sequence 2.4 GHz ISM Band

Operating

Frequency 2400-2497 MHz North American, ETSI, and

Japan channel coverage,

factory configurable

FCC ID LOZ102036 FCC approval

Channeling 1 MHz increments Programmable for IEEE 802.11

Type of Modulation BPSK 1 Mbit/s

QPSK 2 Mbit/s

CCK 5.5 and 11 Mbits/s

Nominal 10 MHz BW (-6 db)

Power Output

(North American

Configuration)

30 mW Meets FCC Part 15.247

requirements

Antenna Type Diversity Integrated antenna

Antenna Connec-

tors 2 Amphenol MicroMate

female Unique connector per FCC Part

15.203. Snap-On with 1.5-2.5

lb retension force

Mating Cable

Connectors Huber & Suhner:

Amphenol: MMCX-50 Series

MicroMate Series PCMCIA Connector Card Connector Per PC Card

(Nov 95) Physical

Specification 4.1

AppenBspecs.fm Page 82 Monday, October 18, 1999 1:54 PM

Appendix B: PC Card Specifications

Power Requirements

Table B.3 – Power Requirements

Physical Specifications

Table B.4 – Physical Characteristics

Specification Value

Operational Voltage 5.0V ±0.25 Volts

Receive Mode Current 260 mA (220 mA typically)

High Power Transmit Mode

Current (30 mW) 490 mA (350 mA typically)

Sleep Mode Current 10 mA

Item Description

Size 3.37" L x 2.13" W x .20" H

(8.56 cm L x 5.41 cm W x .51 cm H)

Enclosure PC Card Type II

Weight 1.3 oz.

Operating Temperature 0° C to 70° C minimum (-22° F to 158° F)

Storage Temperature -40° C to +85° C (-40° F to 185° F)

Humidity, Shock, Drop,

Vibration, Thermal Shock per PC Card version 2.01, section 13.6.2

specifications

ESD 15kV (human body model)

Connectors 68-pin PC Card

Status Indicators Green and Amber LEDs – link association/activity

AppenBspecs.fm Page 83 Monday, October 18, 1999 1:54 PM

Appendix B: PC Card Specifications

Mechanical Description

Figure B.1 – Mechanical Outline

AppenBspecs.fm Page 84 Monday, October 18, 1999 1:54 PM

Appendix C: Channels

Appendix C

Channels

The channel identifiers and the channel center frequencies

of each 22 MHz wide channel are shown in the table below,

as appropriate for the various areas or regulatory agencies.

Regulatory Domains

Channel

Identifier Center

Frequency North

America ETSI Spain France Japan

1 2412 MHz X X - - -

2 2417 Mhz X X - - -

3 2422 MHz X X - - -

4 2427 Mhz X X - - -

5 2432 Mhz X X - - -

6 2437 Mhz X X - - -

7 2442 MHz X X - - -

8 2447 MHz X X - - -

9 2452 MHz X X - - -

10 2457 MHz X X X X -

11 2462 MHz X X X X -

12 2467 MHz - X - X -

13 2472 MHz - X - X -

14 2484 MHz - - - - X

Appendix C: Channels

Appendix D: Declarations of Conformity

Tested To Comply

With FCC Standards

FOR HOME OR OFFICE USE

Appendix D

Declarations of Conformity

Manufacturers Federal Communica-

tion Commission Declaration of

Conformity Statement

Models: PC4500, PC4800

Manufacturer:

Aironet Wireless Communications, Inc.

3875 Embassy Parkway

Akron, OH 44333-8357

330-664-7900

This device complies with Part 15 rules. Operation is sub-

ject to the following two conditions:

1) this device may not cause harmful interference, and 2)

this device must accept any interference received, including

interference that may cause undesired operation.

This equipment has been tested and found to comply with

the limits of a Class B digital device, pursuant to Part 15 of

the FCC Rules. These limits are designed to provide rea-

sonable protection against harmful interference when the

equipment is operated in a residential environment. This

equipment generates, uses, and radiates radio frequency

energy, and if not installed and used in accordance with the

instructions, may cause harmful interference. However,

there is no guarantee that interference will not occur. If this

equipment does cause interference to radio or television

reception, which can be determined by turning the equip-

ment off and on, the user is encouraged to correct the inter-

ference by one of the following measures:

• Reorient or relocate the receiving antenna.

Appendix D: Declarations of Conformity

•Increase separation between the equipment and

receiver.

•Connect the equipment into an outlet on a circuit differ-

ent from which the receiver is connected.

•Consult the dealer or an experienced radio\TV techni-

cian.

User Warning

The Part 15 radio device operates on a non-interference

basis with other devices operating at this frequency. Any

Appendix D: Declarations of Conformity

Department of Communications—Canada

Canadian Compliance Statement

This Class B Digital apparatus meets all the requirements of

the Canadian Interference - Causing Equipment Regula-

tions.

Cet appareil numerique de la classe B respecte les exi-

gences du Reglement sur le material broilleur du Canada.

This device complies with RSS-210 of Industry of Canada.

Operation is subject to the following two conditions: 1) this

device may not cause harmful interference, and 2) this

device must accept any interference received, including

interference that may cause undesired operation.

The device is certified to the requirements of RSS-139-1 for

2.4 GHz spread spectrum devices. The use of this device in

a system operating either partially or completely outdoors

may require the user to obtain a license for the system

according to the Canadian regulations. For further informa-

tion, contact your local Industry Canada office.

Appendix D: Declarations of Conformity

European Telecommunication Standards Institute

Statement of Compliance

Information to User

This equipment has been tested and found to comply with

the European Telecommunications Standard ETS 300.328.

This standard covers Wideband Data Transmission Sys-

tems referred in CEPT recommendation T/R 10.01.

This type accepted equipment is designed to provide rea-

sonable protection against harmful interference when the

equipment is operated in a commercial environment. This

equipment generates, uses, and can radiate radio fre-

quency energy, and if not installed and used in accordance

with the instruction manual, may cause harmful interference

to radio communications.

Appendix D: Declarations of Conformity

Appendix E: Technical Support

Appendix E

Technical Support

Communications

Use the following information to contact the Aironet

Technical Support group:

Telephone: (330) 664-7903

Fax: (330) 664-7990

e-mail: techsupp@aironet.com

Web Site

For additional product information and technical sup-

port, including the capability to download new firmware

and drivers, use the Aironet web site at:

http://www.aironet.com

Appendix E: Technical Support

Aironet Wireless Communications 102038 Direct Sequence Spread Spectrum Data Transceiver User Manual

Aironet Wireless Communications Inc Direct Sequence Spread Spectrum Data Transceiver

Contents

manual

Navigation menu

Namespaces

Views

Navigation