Cisco Linksys WCB54G Wireless-G CardBus Module User Manual 54M WLAN

Cisco-Linksys, LLC Wireless-G CardBus Module 54M WLAN

Manual

Wireless-G CardBus Module User Manual Rev 0.9
Federal Communication Commission Interference Statement 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 interfer-ence 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 en-couraged to try to correct the interference by one 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. FCC Caution: To assure continued compliance, (example - use only shielded interface cables when connecting to computer or peripheral devices). Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to op-erate this equipment. This device complies with Part 15 of the FCC 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. IMPORTANT NOTE: FCC Radiation Exposure Statement: This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body. This transmitter must not be co-located or operating in conjunc-
54M Wireless CardBus Module ii tion with any other antenna or transmitter. This device is intended only for OEM integrators under the fol-lowing conditions: 1) The antenna must be installed such that 20 cm is maintained between the antenna and users, and 2) The transmitter module may not be co-located with any other transmitter or antenna. As long as 2 conditions above are met, further transmitter test will not be required. However, the OEM integrator is still respon-sible for testing their end-product for any additional compliance requirements required with this module installed (for example, digital device emissions, PC peripheral requirements, etc.). IMPORTANT NOTE: In the event that these conditions can not be met (for example certain laptop configurations or co-location with another transmitter), then the FCC authorization is no longer considered valid and the FCC ID can not be used on the final product. In these circumstances, the OEM integrator will be re-sponsible for re-evaluating the end product (including the transmitter) and obtaining a separate FCC authorization. End Product Labeling This transmitter module is authorized only for use in device where the antenna may be installed such that 20 cm may be maintained between the antenna and users (for example access points, routers, wireless ADSL modems, and similar equipment). The final end product must be labeled in a visible area with the following: “Contains TX FCC ID: PKW-WCB54G ”. Manual Information That Must be Included The users manual for end users must include the following in-formation in a prominent location “ IMPORTANT NOTE: To comply with FCC RF exposure compliance requirements, the an-
Preface iii tenna used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other an-tenna or transmitter.
54M Wireless CardBus Module iv Table of contents CHAPTER 1 ....................................................................................................1 Introduction 1 Features ............................................................................................... 1 What is Wireless LAN? ........................................................................ 2 LAN Modes .......................................................................................... 3 Notes on wireless LAN configuration .................................................. 4 CHAPTER 2 ....................................................................................................5 Hardware installation 5 Hardware description.......................................................................... 5 Product Outlook................................................................................. 5 CHAPTER 3 ....................................................................................................7 Using the Wireless Utility 7 Configuration Utility............................................................................ 7 APPENDIX A ................................................................................................ 10 Specifications..................................................................................... 10
1 Chapter 1 Introduction Thank you for using the Wireless LAN Module. This high-speed 54Mbps Wireless Module provides you with an innovative wireless networking solution for your embedded system. The module is easy to set up and use. With this innovative wireless technology, you can share files and printers on the network—without inconvenient wires! Now you can carry the LAN in your pocket! This module is designed for 1. Wireless LAN Printer Server 2. Wireless LAN Ethernet Adapter 3. Wireless LAN Access Point 4. Wireless LAN Router / Gateway / Cable Modem 5. Wireless LAN Broadband Router 6. Wireless LAN Presentation Gateway Features • Wire-free access to networked resources from anywhere beyond the desktop • Low interference & high susceptibility guarantee reliable per-formance
54M Wireless CardBus Module 2 • Delivers data rate up to 54 Mbps • Dynamically shifts between 11G (draft) & 11B network speed, based on signal strength, for maximum availability and reliability of connection • Uses 2.4GHz frequency band, which complies with worldwide requirement • Used on embedded operating systems • Ensures great security by providing the Wired Equivalent Pri-vacy (WEP) defined in the IEEE 802.11 standard What is Wireless LAN? Wireless Local Area Network (WLAN) systems offer a great num-ber of advantages over traditional wired systems. WLANs are flexible and easy to setup and manage. They are also more eco-nomical than wired LAN systems. Using radio frequency (RF) technology, WLANs transmit and re-ceive data through the air. WLANs combine data connectivity with user mobility. For example, users can roam from a conference room to their office without being disconnected from the LAN. Using WLANs, users can conveniently access shared information, and network administrators can configure and augment networks without installing or moving network cables. WLAN technology provides users with many convenient and cost saving features: • Mobility: WLANs provide LAN users with access to real-time information anywhere in their organization, providing service opportunities that are impossible with wired net-works.
—Introduction 3 • Ease of Installation: Installing is easy for novice and ex-pert users alike, eliminating the need to install network cables in walls and ceilings. • Scalability: WLANs can be configured in a variety of to-pologies to adapt to specific applications and installations. Configurations are easily changed and range from peer-to-peer networks suitable for a small number of users to full infrastructure networks of thousands of users roaming over a broad area. LAN Modes Wireless LANs can be configured in one of two ways: Ad-hoc Networking Also known as a peer-to-peer network, an ad-hoc net-work is one that allows all workstations and computers in the network to act as servers to all other users on the network. Users on the network can share files, print to a shared printer, and access the Internet with a shared modem. However, with ad-hoc networking, users can only communicate with other wireless LAN computers that are in the wireless LAN workgroup, and are within range. Infrastructure Networking Infrastructure networking differs from ad-hoc network-ing in that it includes an access point. Unlike the ad-hoc structure where users on the LAN contend the shared bandwidth, on an infrastructure network the access point can manage the bandwidth to maximize bandwidth utilization. Additionally, the access point enables users on a wire-less LAN to access an existing wired network, allowing wireless users to take advantage of the wired networks resources, such as Internet, email, file transfer, and printer sharing. Infrastructure networking has the following advantages over ad-hoc networking: • Extended range: each wireless LAN computer
54M Wireless CardBus Module 4 within the range of the access point can commu-nicate with other wireless LAN computers within range of the access point. • Roaming: the access point enables a wireless LAN computer to move through a building and still be connected to the LAN. • Wired to wireless LAN connectivity: the access point bridges the gap between wireless LANs and their wired counterparts. Notes on wireless LAN configuration When configuring a wireless LAN (WLAN), be sure to note the following points: • Optimize the performance of the WLAN by ensuring that the distance between access points is not too far. In most buildings, WLAN cards operate within a range of 100 ~ 300 feet, depending on the thickness and structure of the walls. • Radio waves can pass through walls and glass but not metal. If there is interference in transmitting through a wall, it may be that the wall has reinforcing metal in its structure. Install another access point to circumvent this problem. • Floors usually have metal girders and metal reinforcing struts that interfere with WLAN transmission.
5 Chapter 2 Hardware installation This chapter covers how to installing the Wireless Module in your embedded system. Hardware description The Wireless Module has a standard interface for attaching to the connector on embedded system. And this module has MMCX connector to connect to external an-tenna. Outlook Following is the module outlook
54M Wireless CardBus Module 6
Chapter 3 Using the Wireless Utility This module also come with a wireless utility, following describe how to use the utility. Configuration Utility The following table describes the configuration utility: State: displays the connection status. Current Channel: displays the chan-nel. Current Tx Rate: displays the wire-less bandwidth in megabits per second. Throughput: displays the transfer and receive rates in bytes per second. Link Quality: when connected to the wired LAN, displays the connection integrity. Signal Strength: when connected to the wired LAN, displays the signal strength. Note: Link quality and signal strength are not available when using a peer-to-peer connection. 7
54M Wireless CardBus Module Mode: displays the current LAN mode, either AdHoc or Infrastructure. SSID: displays a list of Service Set Identifications. Ethernet Conversion: displays a list of Ethernet conversion protocols. Tx Rate: displays a list of transfer rates. WEP: allows you to enable or disable Wired Equivalency Privacy (WEP) for encryption, with either 64- or 128-bit encryption. PS Mode: allows you to enable or disable power saving mode. Channel: enables you to select a transmission channel. The Encryption window enables you to create an encryption scheme for Wire-less LAN transmissions. Enter a passphrase and press Generate to automatically generate a 64- or 128-bit key (selected from the WEP drop-down menu in the Configuration screen). You can also manually enter a set of values for each key. Note: 128-bit encryption requires more system resources than 64-bit encryption. Use 64-bit encryption for better performance. 8
Appendix B Error Messages of Enabler Program This screen displays the version num-ber of the Wireless LAN card and the Configuration Utility. 9
10 Appendix A Specifications Standards Compliance: IEEE802.11b WLAN Standard, IEEE802.11g Draft Standard Type: CardBus Type Data Rate: 802.11b: 11, 5.5, 2, 1 Mbps 802.11g: 54, 48, 36, 24, 18, 12, 9, 6 Mbps Frequency: 2.412 to 2.497GHz External Antenna: Dipole Antenna Roaming: 802.11 compliant Network Architectures: Infrastructure and Ad Hoc Modulation Technique: 802.11b: CCK (11 Mbps, 5.5 Mbps), DQPSK (2 Mbps), DBPSK (1 Mbps) 802.11g: OFDM Coverage Area: 802.11g: 54Mbps up to 50m LOS, 20m indoors Power: Tx: 550mA @ 3.3V max. Rx: 350mA @ 3.3V max. Output Power: 15dBm (typical) Receiver Sensitivity: -82dBm Operating Environment: Temperature: 0o to 55oC Humidity: 10% to 90%

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