AOpen AOI-702U User Manual

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AOpen Wireless USB Adapter


User Guide

PN: 90.18A10.112

AOpen Wireless PC Adapter


Copyright 2002 AOpen. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written permission ofAOpen. AOpen makes no representations or warranties, either expressed or implied, with respect to the contents hereof and specifically disclaims any warranties, merchantability or fitness for any particular purpose. Any software described in this manual is sold or licensed "as is". Should the programs prove defective following their purchase, the buyer (and not AOpen, AOpen distributor, or AOpen dealer) assumes the entire cost of all necessary servicing, repair, and any incidental or consequential damages resulting from any defect in the software. Further, AOpen reserves the right to revise this publication and to make changes from time to time in the contents hereof without obligation to notify any person of such revision or changes. Please direct all the inquiries to:


Limited Warranty

AOpen guarantees that every wireless access point is free from physical defects in material and workmanship under normal use for one year from the date of purchase. If the product proves defective during this warranty period, please contact your local reseller.

All brand and product names mentioned in this manual are trademarks and/or registered trademarks of their respective holders.

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Federal Communication Commission Interference


This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

1.Reorient or relocate the receiving antenna.

2.Increase the separation between the equipment and receiver.

3.Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

4.Consult the dealer or an experienced radio/television technician for help.

Notice 1:The changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

Notice 2:Shielded interface cables, if any, must be used in order to comply with the emission limits.

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Wireless LAN (Local Area Network) systems offer a number of greater excellences over a traditional wired system. Wireless LANs (WLANs) are easier to setup and

manage, more flexible and often more cost effective than their wired equivalence.

By using radio frequency (RF) technology, the need for wired connections is minimized while WLANs transmit and receive data over the air. Therefore, WLANs combine data connectivity and user mobility through simplified configuration, enabling movable LANs.

AOpen AOI-701Uwireless LAN PC adapters allow notebook users to access shared information without looking for a place to plug in. It offers mobility and flexibility to the LAN users. In addition to the easy installation,AOI-701Uis compatible with Window 95, 98, ME, NT, 2000, and XP.


Maximum 11Mbps data throughputs Supports IEEE 802.11b standard

Uses Direct Sequence Spread Spectrum (DSSS) Radio Transmission to ensure connections

Easy installation

Supports 64/128bits WEP (Wired Equivalent Privacy) data encryption

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Compatible with Window 95, 98, ME, NT, 2000 and XP Integrated patch diversity antenna

Advanced Power Management conserve notebook battery life

Limited One year warranty

Package Contents

One Wireless LAN 802.11b

USB Adapter (AOI-702U)

One Driver and Utility CD

ROM including User


System Requirements

Window 95,98,ME, NT, 2000 or XP Operation System 500 Kbytes of free disk space for utility and driver installation

Pentium Based (above) IBM-compatiblePC system withCD-ROMdrive

One Available USB Connector

Order Information

Part Number: 90.18A10.112

Model Name: AOI-702U

UPC Number: 750519-05936-4

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Please follow these to establish your wireless network connection:

1.Install Access Point (AOI-706U)first, if the infrastructure network is required.

2.Install the Driver CD.

3.Install the USB Wireless LAN Adapter (AOI-702U).

4.Install the network protocol(S) which is required for networking communication on your network. (Most likely you will need the TCP/IP protocol.)

Installation for Window 95/98/2000/ME/NT



Installation Procedure:

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1.Power on your computer with WINDOWS 95(OSR2) /98/2000/ME/NT loaded

2.Make sure that there is no USB adapter inserted.

3.Insert the Installation CD. Go “USB” folder, and click on the SETUP.

4. Click “Next>” to proceed the installation.

5.Click NEXT to confirm the destination that you would like to save the files.

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6.Select a program folder that you would like to install the program. The default folder is AOpen Wireless LAN\AOI-702U.Once confirm, please click onNEXT.

7.Click NEXT to confirm all the default settings. The default Operation Mode is Infrastructure mode, and the default ESSID is aopen. You may change the default setting afterwards. Please refer to Chapter 3 for configurations.

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8.It takes a few seconds for copying the utility files. Click on FINISH, insert the USB adapter(AOI-702U)and restart the PC.

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Wireless LAN USB adapter(AOI-702U)comes with its own management software. This utilities application is provided and configured by you. After successful

installation of the adapter, a new icon, Wireless Configuration Utility, should appear in your system tray (as figure 1). GREEN means a good connection with strong signals. YELLOW means a fair connection. RED means a poor connection or no signals at all. Double clicking on thatConfiguration Utility icon, or go to START->PROGRAM->AOPENWIRELESS LAN->AOI-702U->CONFIGURATION UTILITY, you will enter theWireless Configuration Utility program. ( as figure 2).

Figure 1 Configuration Utilityicon

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Figure 2 Wireless Configuration Utilityprogram

The utility is divided into five tabs: STATUS, STATISTICS,


STATUS (see figure 2)

It shows the information of the linkage between this wireless pc adapter and the wireless access point.

Click the CHANGE button to change the set ups, and click theSUMIT button after the configuration has been changed.

Operation Mode

The Operation Mode setting determines the structure of your wireless network. The default isInfrastructure mode.

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Ad Hoc: TheAd-Hocmode is for a simplepeer-topeer network. ( with no Access Point needed)Infrastructure: The infrastructure mode allows wireless

users to be able to access to the wired (existed) network by using an Access Point. With Multiple access points, they provide roaming, which extend the coverage of the wireless network.


It specifies the channel used in wireless communication and should be set to the same channel with other wireless nodes in the same wireless network. The default channel is channel 6.

SSID (Service Set Identifier)

SSID is the unique name shared among all nodes in a wireless network. The SSID must be the same for all the nodes on the network, and is case sensitive. The default SSID is aopen.

TX Rate: This is the current transfer rate for the network card. It should set toFully Automatic to get the optimal performance


State is to display the current state of the linkage.

It shows the BSS ID of the associated Access Point which wireless connects to the adapter. The state is showing “Scanning” when the adapter is searching for an available access point. Sometimes it is because the adapter can not detect the SSID for an access point within the range. An error message may be displayed when the driver failed to initialize.

Signal Strength

It is active only when the node is in Infrastructure Mode. Here displays the signal strength of the connection.

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Link Quality

This is active only when it is in Infrastructure Mode. Here displays the quality of the linkage between the adapter and the Access Point.

Link Quality is a measurement of receiving and transmissions errors. It will start looking for a better Access Point when the Link Quality indication poor connection.

MAC Address

This unique 48-bitMedia Access Control address is known as the station identifier.


It shows the total amount of packets which have been received or transmitted by the adapter.

Figure 3 STATISTICS tab

Click the RESET button to reset the data.

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It shows all the Access Points nearby when the Infrastructure mode is chose, or all the nearby wireless adapters when it is in the Ad Hoc mode.

Figure 4 SITE SURVEY tab

Click on RE-SCAN to search more available wireless devices near by. You may double click on any Access Point(BSSID) to connect automatically.


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Figure 5 ENCRYPTION tab

An additional security measurement may be desired on protecting your wireless network. This can be achieved by applying WEP (Wired Equivalent Privacy) encryption. WEP uses a combination of 64bit and 128bit keys to encrypt every data transmission.

Encryption (WEP)

It can be set to Disable,64 Bit, and128 Bit. Once enable the WEP, you would create an encryption key.All the nodes in the same wireless network need to present the identical key for the communication.

Key 1 – Key 4

The Keys can be entered manually in these four fields and restored.

Default Tx Key

You may chose Key 1 to Key 4 as your default key.

Authentication Type

It is only used for WEP only. You may choose between Open System orShared Key.

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Shared Key is when both sender and receiver share a secret key.

Open System is when both sender and receiver do not share a secret key. It prevents the eavesdropping if the secret key is discovered.


Figure 6 ADVANCED tab

It allows you to set the Preamble Type, Fragmentation Threshold and RTS/CTS Threshold.

Preamble Type

It should be set to Long for a “noisy” network environment, orShort for a clear network environment.

Fragmentation Threshold

The lower value of the fragmentation threshold will increase the

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devotion to recovering packet errors, however at the same time, it will also decrease the network performance.

RTS/CTS Threshold

The higher value of RTS/CTS threshold will increase better traffic coordination of the wireless network.


It shows the versions of the driver, firmware, and application of AOI-702U.

Figure 7 VERSION tab

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This chapter provides the solutions to the common problem. If you can’t find an answer, please check on our web site

Q.My computer does not recognize the network PC card.

A.Make sure the USB adapter is properly inserted into the USB slot.

Q.The USB card does not work properly.


Reinsert the USB card, and a beep should be heard if the adapter is properly inserted.

Right click on My computer and select Properties. Select the Device Manager, and click on the Network Adapter. If you can’t fine AOpen AOI-702Adapter, it is installed unsuccessful. Please uninstall the drive and repeat the INSTALLATION procedure.

Q.I can not see other wireless users in the infrastructure configuration.

A.Please make sure your AOI-702Uis configured with the same channel, SSID, and WEP key as the other computers in the

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infrastructure mode.





Hardware compatibility

IBM-compatiblecomputer with a USB standard1.0 and 1.1 Type A connector

Driver support

Windows 95 OSR2

Windows 98

Windows 2000

Windows ME

Windows XP

Windows NT 4.0 and higher

Standards supported

IEEE 802.11 standard for Wireless LAN

All major networking standards (including TCP/IP, IPX)


Operating voltage:+5V, +3.3V DC ±5%

Nominal Temp Range: 17 dBm

Extended Temp Range: 14 dBm min