WiFi Wireless Ethernet Adapter AirEZY-2411-BT (ASR-102/ACR-201) User Guide
AirEZY 2411 BT (ASR-102/ACR-201) Wireless Ethernet Adapter User’s Manual Copyright Information in this document is subject to change without notice. Complying with all applicable copyright laws is the responsibility of the user. No part of this document may be reproduced or transmitted in any form or by any means, electronic or mechanical, for any purpose, without the express written permission of the seller.
Table of Contents AirEZY-2411-BT (ASR-102/ACR-201) User’s Manual Chapter 1 INTRODUCTION Data Sheet 1 2 Chapter 2 INSTALLATION Installing the Hardware Power Ethernet connection Status LEDs Optional Hardware Installing the Utility Software System Requirement Installation 3 3 3 3 3 5 6 6 6 Chapter 3 UTILITY SOFTWARE Use the Utility Program Overview of the Tabs Configure AirEZY-2411-BT Configure AirEZY-2411-BT as an Access Point (ASR-102) Configure AirEZY-2411-BT as a Station (ACR-201) Set up the Encryption
Chapter 1 INTRODUCTION AirEZY-2411-BT is an 802.11b compliant, or WiFi, radio with a 10-BaseT interface. Two features separate AirEZY-2411-BT from many other 802.11b-compliant radios. Firstly, this 802.11b-compliant (WiFi) radio can be configured as either a Station (ACR-201) or an AP (ASR-102). Secondly, when configured as a Station, the 10-BaseT interface affords it a true plug-and-play feature that is unavailable from any other 802.
AirEZY-2411-BT (ASR-102/ACR-201) WiFi Radio Key Features Highest degree of security provided by Dynamic WEP encryption key distribution Configurable as either an Access Point or a Station Plug & Play as a Station— o No driver on the host device is required for radio operation o Radio operation is independent of the operating system on the host device (Windows 98/2000/ME, Linux, Unix, embedded, etc.
Chapter 2 INSTALLATION Installing the Hardware Power This radio is capable of pulling power from either an AC adapter (supplied with the standard purchase) that plugs into a wall outlet or from the USB or the PS2 port of a notebook computer through special adapter cables (call OTC to find out more about these optional cables), or through a battery pack.
LED Color Light Blinking Pattern ON RED Steady on RX GREEN Steady on TX RED on, when transmitting RF signal LINK YELLOW Flickering when communicating over the Ethernet port; steady-on when Ethernet connection is absent If the yellow LED stays on continuously, then the Ethernet connection to the host computer or device is not made. Check your UTP cable and make sure that a straight-through cable is used for connecting directly to a host. A cross-over UTP cable is needed if connecting to a hub.
Three installation examples are shown below.
Installing the Utility Software System Requirements To use the AirEZY-2411-BT Wireless Ethernet Adapter’s utilities software, your computer must meet the following minimum requirements: Windows® 95 (OSR2)/ 98 (SEC)/ME/2000/XP Ethernet capable computer with RJ-45 port (either built-in or add-on NIC) Installation To install the utility program, simply insert the CD-ROM provided and the installation process will finish with you clicking a few “OK”.
Chapter 3 UTILITY SOFTWARE Use the Utility Program Once the radio is properly turned on and connected either directly to the computer running the Utility program or to a port on the same subnet, the Utility is ready for use. To start the Utility program from your Microsoft Windows, click “Start”, then “Program”, move to locate the “AirEZY-2411-BT” group and click on the Utility program icon to launch the Utility program. Overview of the Tabs There are five tabs inside the Utility graphic interface.
Configure AirEZY-2411-BT as an Access Point (ASR-102) By checking the “Change Role to AP” (red-arrowed in screen-shot #3), most Screen-Shot #2 Screen-Shot #3 parameter fields become undimmed and modifiable, as seen in screen-shot #3 . With the exception of the “MAC” field, and sometimes the “Allowed Station List” field, each filed can be modified and uploaded into the radio by clicking the Apply button without exiting the program, or by clicking the OK button right before exiting the program.
Each field on this “Access Point” sub-tab is explained below. Device Name: Allows the user to enter a user- defined name for the radio. Up to 32 bytes can be used. MAC: Displays the MAC address of the radio when it is configured as an AP. This filed cannot be modified. SSID: Service Set Identity is used by a station radio when issuing Association/Re-association Requests to the Access Point. The Access Point uses the match of the SSID as one of the optional conditions for granting or refuting association.
exactly the same SSID as the SSID entered in this sub-tab. The tightest level of network access control is implemented in Level 3, [Hide SSID, Match SSID, Use Allowed List], add one additional criterion for a Station to gain access to the network associated with this AP—its MAC address must appear in the “Allowed Station List” (see below) shown in the lower-right corner of this sub-tab.
system” mode. When the “shared key” option is chosen, the “Encryption” tab of the Utility program must be properly filled out. Fragmentation Threshold: In the presence of hostile RF environment, such as interference, frames longer than this threshold numbers in bytes are divided prior to transmission into one or more fragments equal in length to the fragmentation threshold. The default value is set at 2436 bytes, the maximum 802.11 data frame size, such that no frames are ever fragmented.
Configure AirEZY-2411-BT as a Station (ACR-201) Click on the “Station” sub-tab to display the “Station” page if the “Access Point” page is on top after clicking the “Configuration” tab. Similar to the case of configuring the radio for AP, checking the “Change Role to Station” undims the page and makes most fields modifiable. Some of the fields on the Station sub-tab are identical to those on the “Access Point” sub-tab. Please refer to the “Access Point” section for explanation of these fields.
PS Mode: Power Saving can be enabled only when “Infrastructure” is selected for the “Network Type”. Channel: This field is modifiable only when the “Ad hoc” type is selected for “Network Type”. The Station automatically scans for the right channel to join when operated in the “Infrastructure” mode. In the “Ad hoc” mode, the Station also automatically scans for the right channel to join an existing “ad hoc” Service Set.
applied to other Wi-Fi radios, however, may result in very different keys. For this reason, clicking the Apply button after entering the pass-phrase will cause the 4 sets of keys being temporarily displayed under “Manual Entry” as if they were entered manually. (See screen-shots #9 and #10, the display in screen-shot #10 is dimmed and not modifiable.) These displayed keys can be copied down and manually entered for radios other than AirEZY-2411-BT to assure interoperability.
of the default keys for transmitting its data. When Use Dynamic WEP Key is checked, only 3 default keys are available for selection (Screen Shot #11). Note that once the Dynamic WEP Key is in force, the Transmission Key Selection (Screen Shot#12) made by the user is only used in the authentication process and is irrelevant in the encryption of transmitted data. WEP Key Factor: The number here determines how frequently a certain register for the encryption is changed.
transmitted data packets. “Signal Strength” directly measures the amount of RF energy received relative to a “maximum” expected for the best condition. The two measures are related, but could differ due to various reasons. In general, as a first step toward maximizing Link Quality, one should try to maximize the Signal Strength by moving the radio around. If the radio’s role is AP, the “Link Quality” and “Signal Strength” are not displayed (Screen Shot #14).
Notice also that in this manual mode throughputs in Bits/Sec are not calculated due the imprecise timing. Uninstall the Utility Software If you need to uninstall the Utility software for any reason, complete the following steps: 1. Close all programs that are currently running. 2. Click the Window Start button, point to Settings and then click the Control Panel. 2. Double click the Add/Remove Programs icon. 3. Click the AirEZY-2411-BT. This will uninstall the utility program from your computer.
Chapter 4 TROUBLESHOOTING Blank Pages Appear When Open the Utility Program This is either because the radio is extremely busy on the RF side or because the Ethernet connection is problematic. Try to hit the Refresh button a few times. If the blank-page condition persists, it is unlikely that the problem is caused by a busy radio. Check your Ethernet connection. Make sure you use at least a legitimate CAT-3 cable, but preferably a CAT-5.
• Make sure that the MAC address of the Station in question is properly entered into the “Allowed Station List” of the AP if enhanced security level 3, [Hide SSID, Match SSID, Use Allowed List], is chosen. • Make sure that the Station in question has exactly the same SSID as the AP if enhanced security level 2 or 3 is chosen. • Make sure that the Station in question has exactly the same WEP keys as the AP.
• Make sure that the radio is not surrounded by many strongly reflecting (metallic) surfaces. With multiple reflecting surfaces between the radio in question and the target radio, a severe “multi-path” problem may introduce high bit error rate despite a strong “Signal Strength”. • Make sure that there is not a condition of severe packet collision caused by a “hidden node” problem.
Appendix A: LIMITED WARRANTY Wireless LAN Hardware The seller warrants to the end user (“Customer”) that this hardware product will be free from defects in workmanship and materials, under normal use and service, for one (1) year from the date of purchase from the seller or its authorized reseller.
Appendix B: REGULATORY COMPLIANCE FCC Part 15 Declaration of Conformity (DoC) The following equipment: Product Name: Wireless Ethernet Adapter Model Number: AirEZY-2411-BT WLAN is herewith confirmed to comply with the requirements of FCC Part 15 rules. The 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.
GLOSSARY 10BaseT An IEEE standard (802.3) for operating 10 Mbps Ethernet networks (LANs) with twisted pair cabling and a wiring hub. Access Point An internetworking device that seamlessly connects wired and wireless networks. Access Points combined with a distributed system support the creation of multiple radio cells that enable roaming throughout a facility. Ad Hoc Network A network composed solely of stations within mutual communication range of each other (no Access Point connected).
Hidden Node The situation where two or more radios in a multiple-radio network fail to detect the RF signals from each other. For example, in a 3-radio network, radio 2 and 3 both have good link to radio 1. Radio 2 and 3, however, are isolated from each other by, say, a metal wall. Radio 2 therefore is a “hidden node” to radio 3, and vice versa. Since an 802.
PCMCIA Personal Computer Memory Card International Association. This Association develops standards for PC cards, formerly known as PCMCIA cards. These cards are available in three types, and are about the same length and width as credit cards. However, the different cards range in thickness from 3.3 mm (Type I) to 5.0 mm (Type II) to 10.5 mm (Type III). These cards can be used for various functions, including memory storage, landline modems, and wireless modems. PS Mode Power Save Mode.
