NDC comm NWH4020 Bedienungsanleitung

User’s Guide

Version A1

January 2003

National Datacomm Corporation

4th Fl., No. 24-2, Industry E. Rd. IV

Science-based Industrial Park

Hsinchu, Taiwan, R.O.C.

Technical Support

E-mail: techsupt@ndc.com.tw

NDC World Wide Web

http://www.ndclan.com/

11-Mbps USB

Wireless LAN Ada

ter

NWH4020

ii InstantWave 11-Mbps USB Wireless LAN Adapter

TRADEMARKS

NDC and InstantWave are trademarks of National Datacomm Corporation. All other names

mentioned in this document are trademarks/registered trademarks of their respective owners.

NDC provides this document “as is,” without warranty of any kind, either expressed or

implied, including, but not limited to, warranty of merchantability or fitness for a particular

purpose. NDC may make improvements and/or changes in this manual or in the product(s)

and/or the program(s) described in this manual at any time. This document might include

technical inaccuracies or typographical errors.

FCC WARNING

This equipment has been tested and found to comply with the limits for a Class B Digital

device, pursuant to part 15 of the 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:

!" Reorient or relocate the receiving antenna

!" Increase the separation between the equipment and receiver

!" Connect the equipment into an outlet on a circuit different from that to which the

receiver is connected

!" Consult the dealer or an experienced radio/TV technician for help

You are cautioned that changes or modifications not expressly approved by the party

responsible for compliance could void your authority to operate the equipment.

This device complies with part 15 of the FCC Rules. 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

FCC RF Radiation Exposure Statement

This equipment complies with FCC RF radiation exposure limits set forth for an

uncontrolled environment. This equipment should be installed and operated with a minimum

distance of 20 centimeters between the radiator and your body.

InstantWave 11-Mbps USB Wireless LAN Adapter iii

Packing List

The adapter package should contain the following items:

#" One InstantWave 11-Mbps USB wireless LAN adapter

#" One USB cable

#" One USB Adapter Driver disk

#" Two InstantWave Utility disks

#" One quick setup guide

If the optional USB coupler was ordered, make sure it is in the package as well.

iv InstantWave 11-Mbps USB Wireless LAN Adapter

Table of Contents

INTRODUCTION..................................................................................................1

SYSTEM REQUIREMENTS.......................................................................................1

Hardware .........................................................................................................1

Software............................................................................................................1

TERMINOLOGY USED IN THIS GUIDE.....................................................................2

THE PARTS OF THE ADAPTER ................................................................................4

ADAPTER INSTALLATION...............................................................................5

CONNECTING THE ADAPTER FOR THE FIRST TIME.................................................5

INSTALLING THE DRIVER ......................................................................................5

Windows 98......................................................................................................6

Windows ME ....................................................................................................6

Windows 2000..................................................................................................7

Windows XP .....................................................................................................8

INSTALLING THE INSTANTWAVE UTILITY.............................................................8

UNINSTALLING THE DRIVER AND UTILITY..........................................................11

THE INSTANTWAVE UTILITY.......................................................................13

USING THE INSTANTWAVE UTILITY....................................................................13

Adapter Properties.........................................................................................15

Site Survey......................................................................................................21

Radio Link Quality Indicator..........................................................................22

Station Traffic Monitor...................................................................................22

DRIVER/UTILITY UPGRADE PROCEDURE ...............................................24

TROUBLESHOOTING.......................................................................................25

TECHNICAL SUPPORT....................................................................................27

NDC LIMITED WARRANTY............................................................................28

SPECIFICATIONS..............................................................................................30

APPENDIX...........................................................................................................33

InstantWave 11-Mbps USB Wireless LAN Adapter v

INDEX...................................................................................................................34

vi InstantWave 11-Mbps USB Wireless LAN Adapter

List of Figures

FIGURE 1. AD-HOC NETWORK ..................................................................................2

FIGURE 2. INFRASTRUCTURE NETWORK...................................................................2

FIGURE 3. ROAMABLE MULTI-AP INFRASTRUCTURE NETWORK...............................3

FIGURE 4. PARTS OF THE ADAPTER ..........................................................................4

FIGURE 5. SETUP PROGRAM WELCOME SCREEN.......................................................9

FIGURE 6. CHOOSE DESTINATION LOCATION WINDOW............................................9

FIGURE 7. SELECT PROGRAM FOLDER WINDOW.....................................................10

FIGURE 8. UTILITY INSTALLATION PROGRESS METER.............................................10

FIGURE 9. PROMPT FOR DISK 2 ..............................................................................11

FIGURE 10. COMPLETION MESSAGE .......................................................................11

FIGURE 11. INSTANTWAVE HIGHRATE UTILITY.....................................................13

FIGURE 12. INSTANTWAVE UTILITY TOOLBAR ......................................................14

FIGURE 13. PREFERENCES DIALOG BOX ..................................................................14

FIGURE 14. TASKBAR ICON ....................................................................................15

FIGURE 15. ADAPTER PROPERTIES WINDOW — CONFIGURATION PANEL...............16

FIGURE 16. ADAPTER PROPERTIES WINDOW — ADVANCED INFORMATION PANEL.17

FIGURE 17. ADAPTER PROPERTIES WINDOW — LINK INFO PANEL..........................18

FIGURE 18. ADAPTER PROPERTIES WINDOW — ENCRYPTION PANEL......................19

FIGURE 19. ADAPTER PROPERTIES WINDOW — TROUBLESHOOTING PANEL..........21

FIGURE 20. SITE SURVEY.......................................................................................22

FIGURE 21. RADIO LINK QUALITY INDICATOR.......................................................22

FIGURE 22. STATION TRAFFIC MONITOR ...............................................................23

InstantWave 11-Mbps USB Wireless LAN Adapter 1

Introduction

Thank you for choosing an InstantWave 11-Mbps wireless networking product.

This guide gives complete instructions on installing and using the InstantWave

NWH4020 11-Mbps USB wireless LAN adapter, and also explains how to install

and use the InstantWave utility program included with the adapter.

The NWH4020 is part of a family of easy-to-use high-performance wireless

communication products. This family of products includes:

• InstantWave 11-Mbps Wireless Access Point (NWH650)

• InstantWave 11-Mbps Wireless Access Point (NWH660)

• InstantWave 11-Mbps Wireless Workgroup Bridge (NWH6210)

• InstantWave 11-Mbps Wireless Building-to-Building Bridge (NWH6110)

• InstantWave 11-Mbps Wireless Ethernet Clients (NWH2210, NWH2610)

• InstantWave 11-Mbps Wireless Secure Router (NWH8010)

• InstantWave 11-Mbps Wireless PC Card (NWH1010)

• InstantWave 11-Mbps Wireless PCI Card (NWH630)

System Requirements

Hardware

The host machine must be an IBM-type x86-based microcomputer with a USB

(Universal Serial Bus) interface. A 3.5-inch floppy-disk drive is required for

installation of the adapter driver and utility. Other resources must be sufficient to

run one of the environments for which the driver and utility were designed (see

next).

Software

The driver and utility included with the adapter will run in Microsoft®Windows 98,

ME, 2000, or XP.

2 InstantWave 11-Mbps USB Wireless LAN Adapter

Terminology Used in This Guide

Ad-hoc Network

An ad-hoc network is a wireless local-area network (WLAN) made up of stations

communicating directly with each other through their wireless interfaces. There is

no central relay point, and normally no connection to a wired network. Ad-hoc

mode is sometimes referred to as peer-to-peer, computer-to-computer, or

Independent Basic Service Set (IBSS) mode. Figure 1 shows a typical ad-hoc

network.

Figure 1. Ad-hoc network

Infrastructure Network

An infrastructure network is a WLAN made up of wireless stations and at least one

wireless relay point, known as a base station or access point (AP). The AP usually

has a connection to a wired network, allowing wireless stations to use resources on

that network. The AP also relays all communications between wireless stations in

its coverage area; these stations never communicate directly with each other.

Infrastructure mode is sometimes referred to as managed or Basic Service Set (BSS)

mode. Figure 2 shows a typical infrastructure network..

Figure 2. Infrastructure network

InstantWave 11-Mbps USB Wireless LAN Adapter 3

BSSID, MAC Address

A Basic Service Set (BSS) is two or more wireless devices that are in

communication with each other. Like every wired Ethernet device, every wireless

device has a fixed, unique “media access control” (MAC) address. When wireless

devices establish communication, they automatically select the MAC address of

one BSS member as an identifier for the group; this is the BSSID.

It has become customary to refer to a wireless device’s MAC address as its BSSID

even when the address is not being used to identify an active BSS.

A BSS that includes an access point is often referred to as a cell.

SSID, Domain Identifier

A Service Set Identifier (SSID) is a shared name, usually assigned by a network

administrator, that identifies wireless devices that are allowed to communicate with

each other. This is one way of providing basic security on a wireless network. An

SSID can be up to 32 characters long, and can include letters and numbers.

Giving multiple access points the same SSID and encryption settings allows

mobile stations that also share those settings to “roam” from one AP to another.

When at least one AP is among the devices sharing an SSID, the name may be

referred to as an Extended Service Set Identifier (ESSID).

An SSID is sometimes called a “domain name,” but it is unrelated to the domain

names used to identify machines and networks on the Internet. Other terms for

SSID are domain ID, net ID, network name, extended network ID, and wireless

network name. The set of devices that an SSID identifies is sometimes called a

communication domain or wireless domain.

Figure 3 shows a common wireless network setup. If the APs share SSID and

encryption settings, mobile devices that also share those settings can roam among

them.

Figure 3. Roamable multi-AP infrastructure network

4 InstantWave 11-Mbps USB Wireless LAN Adapter

Roaming

When APs covering adjacent areas have the same SSID and encryption settings, a

mobile device that also shares those settings can communicate through the APs

continuously while moving from one coverage area to another. This is known as

roaming. When one AP’s signal begins to weaken, the mobile device automatically

searches for another AP that it is authorized to “associate with” (that is, connect to);

when the second AP’s signal quality is better than that of the first, the station

automatically switches over.

The Parts of the Adapter

While highly sophisticated on the inside, the adapter is extremely simple on the

outside. There are only two parts to take note of: the Type B USB jack on the back,

and the power/activity LED (light-emitting diode) indicator on the top:

Figure 4. Parts of the adapter

The USB jack will accept the Type B USB plug on the supplied USB cable or the

optional USB coupler. The plugs are clearly marked as Type B.

The power/activity indicator is a red LED. It shines steadily when the adapter is

powered up but idle, and it blinks off and on when the adapter is receiving or

transmitting through its wireless interface.

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