BroMax Communications WM250 WLAN Module User Manual Manual

BroMax Communications Inc WLAN Module Manual

Manual

11Mbps Wireless LANModuleQuick GuideRev 0.9
Regulatory ComplianceFCC Interference StatementThis equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a resi-dential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed andused in accordance with the instructions, may cause harmful interference to radio communications. However, there isno guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interfer-ence to radio or television reception, which can be determined by turning the equipment off and on, the user isencouraged 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 compliancecould void your authority to operate the equipment.Statements Needed to be Shown on End ProductSince this module is installed inside the end product, the end product should be affixed a label on visible area show-ing that this product contain a RF module, and also its FCC ID.FCC Radiation Exposure StatementThis 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.
Wireless LAN module quick guideiiTable of contentsCHAPTER 1IntroductionFeaturesWhat is Wireless LAN?LAN ModesNotes on wireless LAN configurationCHAPTER 2Hardware installationHardware descriptionStatus LEDsCHAPTER 3Using the Wireless UtilityInstallation & descriptionAPPENDIX ATroubleshootingQ&AAPPENDIX BSpecifications
1Chapter 1Chapter 1Chapter 1Chapter 1IntroductionThank you for using the Wireless LAN module. This high-speed Wireless LAN module provides you with an inno-vative wireless networking solution. 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 yourpocket!Features• Wire-free access to networked resources from anywhere beyond the desktop• Low interference & high susceptibility guarantee reliable performance• Delivers data rate up to 11 Mbps• Dynamically shifts between 11, 5.5, 2, and 1 Mbps network speed, based on signal strength, for maximum avail-ability and reliability of connection• Support two external antennas with LEDs indicating Power and Link• Uses 2.4GHz frequency band, which complies with worldwide requirement• Used on embedded operating systems• Ensures great security by providing the Wired Equivalent Privacy (WEP) defined in the IEEE 802.11 standard
Wireless LAN module quick guide2What is Wireless LAN?Wireless Local Area Network (WLAN) systems offer a great number of advantages over traditional wired sys-tems. WLANs are flexible and easy to setup and manage. They are also more economical than wired LANsystems.Using radio frequency (RF) technology, WLANs transmit and receive data through the air. WLANs combinedata connectivity with user mobility. For example, users can roam from a conference room to their officewithout being disconnected from the LAN.Using WLANs, users can conveniently access shared information, and network administrators can configureand 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 organiza-tion, providing service opportunities that are impossible with wired networks.• Ease of Installation: Installing is easy for novice and expert users alike, eliminating the need to installnetwork cables in walls and ceilings.• Scalability: WLANs can be configured in a variety of topologies to adapt to specific applications andinstallations. Configurations are easily changed and range from peer-to-peer networks suitable for asmall number of users to full infrastructure networks of thousands of users roaming over a broad area.LAN ModesWireless LANs can be configured in one of two ways:Ad-hocNetworking Also known as a peer-to-peer network, an ad-hoc net-work is one that allows all workstations and computersin the network to act as servers to all other users onthe network. Users on the network can share files,print to a shared printer, and access the Internet with ashared modem. However, with ad-hoc networking,users can only communicate with other wireless LANcomputers that are in the wireless LAN workgroup, andare within range.InfrastructureNetworking 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 theshared bandwidth, on an infrastructure network theaccess point can manage the bandwidth to maximizebandwidth utilization.Additionally, the access point enables users on awireless LAN to access an existing wired network, al-lowing wireless users to take advantage of the wirednetworks resources, such as Internet, email, filetransfer, and printer sharing.Infrastructure networking has the following advantagesover ad-hoc networking:• Extended range: each wireless LAN computerwithin the range of the access point can commu-nicate with other wireless LAN computers withinrange of the access point.• Roaming: the access point enables a wirelessLAN computer to move through a building andstill be connected to the LAN.• Wired to wireless LAN connectivity: the accesspoint bridges the gap between wireless LANs andtheir wired counterparts.
—Introduction3Notes on wireless LAN configurationWhen 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 toofar. In most buildings, WLAN cards operate within a range of 100 ~ 300 feet, depending on the thick-ness and structure of the walls.• Radio waves can pass through walls and glass but not metal. If there is interference in transmittingthrough a wall, it may be that the wall has reinforcing metal in its structure. Install another access pointto circumvent this problem.• Floors usually have metal girders and metal reinforcing struts that interfere with WLAN transmission.
4Chapter 2Chapter 2Chapter 2Chapter 2Hardware installationThis chapter covers how to installing the wireless LAN module in your embedded system.Hardware descriptionThe Wireless LAN Module has a 50-pin connector for attaching to the 50-pin port of embedded system. Andplease refer to the following table for these 50-pin definition.Wireless Module 50-PIN DefinitionPIN# DEF PIN# DEF PIN# DEF1 GND 21 D0 41 RESET2 D322D1 42WAIT3 D4 23 D2 43 INPACK/4 D5 24 IOIS16/ 44 REG/5 D6 25 CD2/ 45 SPKR6 D7 26 CD1/ 46 STSCHG7 CE1/ 27 D11 47 D88 A10 28 D12 48 D99 OE/ 29 D13 49 D1010 A9 30 D14 50 GND11 A8 31 D1512 A7 32 CE2/13 VCC 33 VS1/14 A6 34 IORD/15 A5 35 IOWR/16 A4 36 WE/17 A3 37 IREQ/18 A2 38 VCC19 A1 39 NC20 A0 40 VS2/
—Hardware installation5And also please refer to the following for the module’s dimension.
Wireless LAN module quick guide6 Status LEDsThe following table describes the meaning of the LEDs of the module.LED MEANINGPWR Indicates that the Card is powered on.LINK Indicates link status. It is normally blinking. When blink-ing, indicates that the card is scanning the channels, andthe link is not active. When lit, indicates that the card islocked to a channel, and the link is active.
—Using the Wireless Utility7Chapter 3Chapter 3Chapter 3Chapter 3Using the Wireless UtilityThe following sections cover the Wireless utility installation and usage.Installation & descriptionAfter you have installed the wireless LAN module on the system, you can install wireless utility on the clientside to check wireless status. Please follow the steps below.1. Run SETUP.EXE, the following screen appears:2. Click Next. The following screen appears:3. Read the End User License Agreement and click Yes. The following screen appears:4. Type in a System ID name for your wireless LAN. This system ID identifies all computers in the wire-less LAN. Then click Next. The following screen appears:
Wireless LAN module quick guide85. Choose the Network Mode for your wireless node.6. Click Next. The following screen appears:7. Select the default path for the wireless utility or browse to an alternate path. Then click Next. The fol-lowing screen appears:8. Type in a Program Folder name or select the default name and click Next. Setup installs the softwareand the following screen appears:9. Click Finish to finish the utility installation.
—Using the Wireless Utility9After you have installed the utility, you will see the wireless utility icon in the Windows taskbar:FreePort utility iconDouble-click the icon to open the wireless utility.
Wireless LAN module quick guide10The following table describes the wireless utility:State: displays the connection status.Current Channel: displays the chan-nel.Current Tx Rate: displays the wire-less bandwidth in megabits persecond.Throughput: displays the transferand receive rates in bytes per second.Link Quality: when connected to thewired LAN, displays the connectionintegrity.Signal Strength: when connected tothe wired LAN, displays the signalstrength.Note: Link quality and signal strengthare not available when using a peer-to-peer connection.Mode: displays the current LANmode, either AdHoc or Infrastructure.SSID: displays a list of Service SetIdentifications.Ethernet Conversion: displays a listof Ethernet conversion protocols.Tx Rate: displays a list of transferrates.WEP: allows you to enable or disableWired Equivalency Privacy (WEP) forencryption, with either 64- or 128-bitencryption.PS Mode: allows you to enable or
—Using the Wireless Utility11disable power saving mode.Channel: enables you to select atransmission channel.The Encryption window enables youto create an encryption scheme forWireless LAN transmissions. Enter apassphrase and press Generate toautomatically generate a 64- or 128-bit key (selected from the WEP drop-down menu in the Configurationscreen).You can also manually enter a set ofvalues for each key.Note: 128-bit encryption requires mo-re system resources than 64-bitencryption. Use 64-bit encryption forbetter performance.This screen displays the versionnumber of the Wireless LAN card andthe Configuration Utility.
12Appendix AAppendix AAppendix AAppendix ATroubleshootingQ&AThese guidelines give you tips to deal with some problems you may encounter while using the Wireless LANcard.Question: The Wireless Utility icon on system tray is always red.Answer: Please make sure that all clients have the same SSID. The SSID is case sensitive. And setall clients to the same wireless channel and make sure you are within range of an Access Point orclient.Question: Can not connect to one of the clients in the network.Answer: First of all, make sure that all clients are up and running with a green Wireless Utility icon.And please check your TCP/IP setup is correct for your network.
13Appendix BAppendix BAppendix BAppendix BSpecificationsPHYSICAL SPECIFICATIONSProduct Name 11Mbps Wireless LAN ModuleType ModuleStandards IEEE802.11b WLAN StandardAntenna Support two Dipole antennasPowerRequirementDC +3.3V +/- 0.3V 320mA / 3.3V (Max.)Weight (g) 44gRADIO SPECIFICATIONSMedia Access Protocol IEEE802.11Bit Error Rate 1E-5 @ -83dBmFrequency 2.42.4835GHz ( Industrial Scientific Medical Band )Channels 11Channels (USA)Data Rate 11Mbps / 5.5Mbps / 2Mbps / 1MbpsModulation Technique Direct Sequence Spread Spectrum , BPSK / QPSK / CCKOutput Power 15dBm (typical)Receiver Sensitivity –80dBm Min.Coverage Area Closed Space : 25m @11Mbps , 100m @5.5Mbps or lowerFree Space : 50m @ 11Mbps , 115m @ 5.5Mbps or lowerENVIRONMENTALTemperature 0 to 40Relative humidity 10% to 90%

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