D Link DI-624 Wireless 2.4GHz mini-PCI Mobile Module User Manual Manual

D Link Corporation Wireless 2.4GHz mini-PCI Mobile Module Manual

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DI 624 User Manual

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GL2454MP-0I MiniPCI Wireless AdapterDate of Issue: Jan. 16th, 2002

Technical SupportThe firmware version of the GL2454MP-0I MiniPCI Wireless Adapter is displayed on theutility About window. Users could download and upgrade the most recent softwareversion from the supplier’s web site or refer to the selling contact for the latest softwareinformation. If you have difficulty resolving the problem while installing or using theGL2454MP-0I MiniPCI Wireless Adapter, please contact the supplier for support.About This ManualGL2454MP-0I MiniPCI Wireless Adapter User’s Manual is first published on January,2003. The manual includes procedures for the setup of the GL2454MP-0I MiniPCIWireless Adapter under Windows XP, Windows 2000, Windows NT, Windows 98SE orWindows ME. Take a moment to read through this manual and familiarize yourself withwireless technology.

Table of ContentsChapter 1 About MiniPCI Wireless Adapter ......................................11-1 Features and Benefits................................................................................... 11-2 Applications.................................................................................................. 21-3 Product Kit ................................................................................................... 31-4 About MiniPCI Wireless Adapter LED Indicators ...................................... 3Chpater 2 Getting Started .....................................................................32-1 Before Installation........................................................................................ 42-2 Insert the GL2454MP-0I MiniPCI Wireless Adapter .................................. 4Chapter 3 Install Driver for Windows .................................................53-1 Set up MiniPCI Wireless Adapter for Windows XP..................................... 53-2 Set up MiniPCI Wireless Adapter for Windows 2000................................ 103-3 Set up MiniPCI Wireless Adapter for Windows NT錯誤! 尚未定義書籤。3-4 Set up MiniPCI Wireless Adapter for Windows 98SE/ ME ....................... 13Chpater 4 Configure the MiniPCI Wireless Adapter .......................194-1 Install the WLAN Utility............................................................................. 194-2 Use the WLAN Utility ................................................................................. 21Limited Warranty ................................................................................31

-1-About MiniPCI Wireless Adapter 1The 802.11g MiniPCI Wireless Adapter is a standard PCI Card that fits into any standard PCIslot in a desktop computer. Moreover, the GL2454MP-0I MiniPCI Wireless Adapter provides asolution to connect the desktop computer to a wireless network for the desktop user. Its 54Mbpsdata rate gives equivalent Ethernet speed to access corporate network or the Internet in awireless environment. In addition, a detachable antenna version is specifically designed forsystem integrator application. When installed, GL2454MP-0I MiniPCI Wireless Adapter isable to communicate with any 802.11g compliant products.1-1 Features and Benefits1. Supports 1, 2, 5.5, 11, 6, 9, 12, 18, 24, 36, 48 and 54 Mbps data rate.2. Working range up to 800 ft. in an open environment.3. Seamless connectivity to wired Ethernet and PC network LAN’s augments existingnetworks quickly and easily.4. Greater flexibility to locate or move networked PCs.5. Wireless connection without the cost of cabling.6. Easy to install and user friendly, just Plug and Play.7. Supports a variety of operating systems (Win98SE/ME/2000/XP)8. 64-bit and 128-bits WEP encryption capable.9. Provides Window-based Diagnostic Tools, most notably, Site Survey, Link Quality Testand Access Point Browser.

-2-1-2 ApplicationsGL2454MP-0I MiniPCI Wireless Adapter offers a fast, reliable, cost-effective solution forwireless client access to the network in applications like these:1. Remote access to corporate network informationE-mail, file transfer and terminal emulation.2. Difficult-to-wire environmentsHistorical or old buildings, asbestos installations, and open area where wiring is difficultto deploy.3. Frequently changing environmentsRetailers, manufacturers and those who frequently rearrange the workplace and changelocation.4. Temporary LANs for special projects or peak time- Trade shows, exhibitions and construction sites where a temporary network will bepractical.- Retailers, airline and shipping companies need additional workstations during peakperiod.- Auditors requiring workgroups at customer sites.5. Access to database for mobile workersDoctors, nurses, retailers, accessing their database while being mobile in the hospital,retail store or office campus.6. SOHO (Small Office and Home Office) usersSOHO users need easy and quick installation of a small computer network.7. High security connectionThe secure wireless network can be installed quickly and provide flexibility.

-3-1-3 Product KitGL2454MP-0I MiniPCI Wireless Adapter comes with the following items. Please go througheach item below. If any of listed items appears to be damaged or missing, please contact yourlocal dealer. GL2454MP-0I MiniPCI Wireless Adapterz GL2454MP-0I MiniPCI Wireless Adapter…..………….…………………….….….. x1z 11Mbps PCI Card Software and Product CD.…………………………..…... x 1z GL2454MP-0I MiniPCI Wireless Adapter User Manual…...…..…………………..… x11-4 About Wireless LAN PC Card LED IndicatorsThe GL2454MP-0I MiniPCI Wireless Adapter has a LED indicator. The behavior of theindicators is described as below:Link LED Solid Green – Associated with the Access Point or Ad-Hoc wireless workstation. Blinking Green – Not connecting to the Access Point or Ad-Hoc wireless workstation.LINK

-4-Getting Started 2This chapter describes the instructions that guide you through the proper installation of yourGL2454MP-0I MiniPCI Wireless Adapter for the Windows XP/2000/98SE/ME operatingsystems.The complete installation of the GL2454MP-0I MiniPCI Wireless Adapter consists of thefollowing steps:STEP 1: Insert the PCI adapter into the PCI slotSTEP 2: Install the corresponding driver and utility.STEP 3: Set basic settings.STEP 4: Finish Installation.2-1 Before InstallationIn addition to the items shipped with the client adapter, you will also need the following in orderto install the adapter:1. A computer equipped with a PCI slot.2. Windows XP/2000/98SE/ME (with a Windows installation CD-ROM for use duringinstallation)3. Minimum 5 Mbytes free disk space for installing driver and utility program.2-2 Insert the GL2454MP-0I MiniPCI Wireless AdapterTo install the GL2454MP-0I MiniPCI Wireless Adapter, please do the following:1. Find an available PCI slot on your computer.2. Insert the PCI Adapter into the PCI slot.

-5-Install Driver for Windows 3This section describes the installation of the GL2454MP-0I MiniPCI Wireless Adapter driverfor the Windows 98SE/ME/2000 and Windows XP operating systems. The installationprocedures for Windows XP refer to 3-1 Set up MiniPCI Wireless Adapter for Windows XP;for Windows 2000 please see 3-2 Set up MiniPCI Wireless Adapter for Windows 2000; forWindows 98SE/ME refer to 3-3 Set up MiniPCI Wireless Adapter for Windows 98SE/ME.Note: Before you start the installation, you are advised to keep the Windows CD-ROM in case you might need certain system files.3-1 Set up MiniPCI Wireless Adapter for Windows XPStep 1: Insert the GL2454MP-0I MiniPCI Wireless Adapter into the PCI slot on your desktopand start Windows. Windows will auto-detect the MiniPCI Wireless Adapter and a “FoundNew Hardware Wizard” window will show up. Select “Install from a list or specific location(Advanced)” to install the driver.

-6-Step 2: Insert the Product CD-ROM into the CD-ROM drive. Specify the location where thedriver is placed. Click on Next to install the driver.Step 3: The windows will find “MiniPCI Wireless Adapter” and start copyingcorresponding files into the system. Click on Next to continue.

-7-Step 4: Click Finish to complete the installation.Step 5: Right click “My Computer” from Start, select Properties, go to the Hardware taband click the Device Manager button to see if any error icon appears next to the Networkadapters/MiniPCI Wireless Adapter. If no, your MiniPCI Wireless Adapter is working well.Check if there is any erroricon next to the MiniPCIWireless Adapter

-8-After installing the MiniPCI Wireless Adapter, the Windows XP will display a “WirelessNetwork Connection # ” message.Click on the message and the “Automatic Wireless Network Configuration” will then appearautomatically and allow users to connect to an available wireless infrastructure network (AccessPoint), shown as follows. You may click the Advanced button to make advanced configurationfor the MiniPCI Wireless Adapter, shown as below.

-9-For more information on using the automatic wireless network configuration please refer toWindows XP Help file.However, the WLAN Utility, which comes with the MiniPCI Wireless Adapter, provides youmore tools to configure the MiniPCI Wireless Adapter and monitor the wireless connection.For more information on installing and using the WLAN Utility, please refer to the followingsections “Install the WLAN Utility” and “Use the WLAN Utility”.Note: To use the WLAN utility under Windows XP, you need to disable theAutomatic Wireless Network Configuration first. Steps are described asfollows: Right click the Network Connections icon. Select Properties. Go to the Wireless Networks tab. Uncheck the “Use Windows to configure my wireless network settings”check box and click the OK button (see the above picture).If you desire to use our WLANUtility, you need to disable theWindows XP AutomaticWireless Network Configurationfirst by un-checking this check

-10-3-2 Set up MiniPCI Wireless Adapter for Windows 2000Step 1: Insert the GL2454MP-0I MiniPCI Wireless Adapter into the PCI slot on your desktopand start Windows. Windows will auto-detect the MiniPCI Wireless Adapter.Step 2: A “Found New Hardware Wizard” window shows up. Click Next to proceed.

-11-Step 3: Select “Search for a suitable driver for my device (recommended)”.Step 4: Insert the Product CD-ROM into the CD-ROM drive. Specify the location where thedriver is placed. Click on Next to install the driver.

-12-Step 5: The windows will find “Network Controller”. Click on Next to continue.Step 6: Click Finish to complete the installation.

-13-Step 7: Open Control Panel/System/Device Manager, and check Network Adapters to seeif any error icon appears. If no, your GL2454MP-0I MiniPCI Wireless Adapter is workingwell. 3-3 Set up Wireless LAN PC Card for Windows 98SE/ MEStep 1: Insert the GL2454MP-0I MiniPCI Wireless Adapter into the PCI slot on your desktopand start Windows. Windows will auto-detect new hardware and will display an “Add NewHardware Wizard” window. Click Next to continue.Check if there is anyerror icon next to theMiniPCI Wireless Adapter

-14-Step 2: Select “Search for the best driver for your device (Recommended)” and clickNext.Step 3: Insert the Product CD-ROM into the CD-ROM drive. Select the “CD-ROM drive”check box and click on Next to install the driver.

-15-Step 4: The Windows will find “MiniPCI Wireless Adapter”. Click Next to continue.Step 5: Once the [Please insert the disk labeled ‘Windows 98 Second Edition CD-ROM/MECD-ROM”, and then click OK] window appears, inset enter the path corresponding to theappropriate drives and click OK. Usually these files can be found at C:Windows or

$-16-C:Windows\system.$

-17-Step 6: Click Finish to complete the software installation.Step 7: Restart the computer.

-18-Step 8: Open Control Panel/System/Device Manager, and check Network Adapters to seeif any error icon appears next to the MiniPCI Wireless Adapter. If no, your GL2454MP-0IMiniPCI Wireless Adapter is working well.Check if there is any erroricon next to the MiniPCIWireless Adapter

-19-Configure the Wireless LAN PC Card 4This chapter gives you assistance with detailed configuration for the GL2454MP-0I MiniPCIWireless Adapter under Windows XP/2000/NT/98SE/ME.4-1 Install the WLAN UtilityTo install the WLAN Utility, follow these steps:Step 1: Insert the Product CD-ROM or floppy disk again.Step 2: Go to the utility folder and run setup.exe.Step 3: The InstallShield Wizard will show up and guide you through the rest of the setupprocess.Run the SetupUtility Choose DestinationLocation and clickNext to continue

-20-Select a programfolder and clickNextYou may add ashortcut in thestartup folder asdesiredUpon completion, go to Program Files and run the WLAN Utility and its icon will appear inthe System Tray in the bottom right corner of your task bar. Clicking on the icon will openthe configuration window. When you minimize the window, the system tray icon will beloaded in the System Tray again.The color behind the system tray icon indicates the link status:Blue indicates a good or excellent link.Yellow indicates a usable but weak link.Red indicates no or very poor link quality. When you minimize the window, the systemtray icon will be loaded in the System Tray again.

-23-ESSIDThe ESS ID is the unique ID used by Access Points and stations to identify a wireless LAN.Wireless clients associating to any Access Point must have the same ESSID. The defaultsetting is ANY, which allows your MiniPCI Wireless Adapter to automatically associate to anyAccess Point (Infrastructure mode) in the vicinity of your wireless adapter. Alternatively, youmay check the ESS ID check box to specify the ESS ID. It will then attempt to associate withAccess Points or stations with the same ESS ID. The ESS ID can be set up to 32 charactersand is case sensitive.Check here before entering the ESS IDIf there two Access Points with the same ESSID, you may check the BSS ID check box andenter the MAC address of the Access Point you desire to connect to.Check here before entering the BSS IDTransmit RateThe GL2454MP-0I MiniPCI Wireless Adapter provides various data rate options for you toselect. Data rates options include Fully Auto, 2 Mbps, 1 or 2 Mbps, 5.5 Mbps, and 11 Mbps.In most networking scenarios, you will see that the factory-set default “Fully Auto” will provethe most efficient. This setting will allow your GL2454MP-0I MiniPCI Wireless Adapter tooperate at the maximum data rate. When the communications quality drops below a certainlevel, the PCI Card will automatically switch to a lower data rate. Transmission at lower dataspeeds are usually more reliable. However, when the communications quality improves again,the GL2454MP-0I MiniPCI Wireless Adapter will gradually increase the data rate again, until ithas reached the highest available transmit rate.

-24-WEPTo prevent unauthorized wireless stations from accessing data transmitted over the network, theWLAN Utility offers highly secure data encryption, known as WEP, making your datatransmission over air more secure. To activate the WEP Encryption, check the WEP Enabledcheck box. An Encryption window will then appear. The instructions are as follows:¾ Pull down the Encryption (WEP) menu and select either 64bit or 128bit encryptionmethod.¾ Specify the encryption keys. There are two methods to set the WEP keys, as describedbelow:Create Encryption Keys by Using a PassphraseTo create encryption keys by using a passphrase, click the Create Key with Passphrasecheck box and type a character string in the Passphrase field. As you type, the utility usesan algorithm to generate 4 keys automatically. Select either the 64bit or 128bit encryptionfirst, and type a string in the Create Key with Passphrase field. Select one key from the 4WEP keys and click OK. Then click the Apply button on the Configuration tab to makethe setting take effect.Create Encryption Keys Using a Passphrase (128bit)

-25-Create Encryption Keys ManuallyYou can also create encryption keys manually by clicking the Create Keys Manuallycheck box.For 64bit encryption you may choose: Alphanumeric: 5 characters (case sensitive) ranging from “a-z”, “A-Z” and “0-9” (e.g.MyKey) Hexadecimal: 10 hexadecimal digits in the range of “A-F”, “a-f” and “0-9” (e.g.11AA22BB33)For 128bit encryption you may choose: Alphanumeric: 13 characters (case sensitive) ranging from “a-z”, “A-Z” and “0-9”(e.g. MyKey12345678) Hexadecimal: 26 hexadecimal digits in the range of “A-F”, “a-f” and “0-9” (e.g.00112233445566778899AABBCC).After entering the WEP keys in the key field, select one key as active key, click the OKbutton and then click the Apply button on the Configuration tab to make the setting takeeffect.Create Encryption Keys Manually (64bit)Note: The WEP key must be set up exactly the same on the Wireless LANstations as they are on the wireless Access Points. If you set “MyKey” for theWireless LAN PC Card, the same WEP Key “MyKey” must be assigned to theAccess Point or other stations.

-26-AdvancedThe WLAN Utility also offers the advanced configuration for user to set the GL2454MP-0IMiniPCI Wireless Adapter under certain network environment. These advanced optionsinclude Power Management, RTS/CTS and Fragmentation Threshold. To enable the advancedconfiguration, go to the Configuration tab and click the Advance button.Power ManagementThe Power Save option is designed to conserve battery life of you computer. When PowerSave is enabled, your GL2454MP-0I MiniPCI Wireless Adapter will go into sleep mode tominimize power consumption.Note: When power saving mode is enabled, the Access Points you use need tosupport power saving as well so that the communication can be established.RTS ThresholdRTS Threshold is a mechanism implemented to prevent the “Hidden Node” problem. “HiddenNode” is a situation in which two stations are within range of the same Access Point, but are notwithin range of each other. The following figure illustrates an example of the “Hidden Node”problem. Both stations (STA) are within range of the Access Point, however, they cannot heareach other. Therefore, they are hidden nodes for each other. When a station starts datatransmission with the Access Point, it might not notice that the other station is already using thewireless medium. When these two stations send data at the same time, they might collidewhen arriving simultaneously at the Access Point. The collision will most certainly result in aloss of messages for both stations.

-27-Thus, the RTS Threshold mechanism provides a solution to prevent data collisions. When youenable RTS Threshold on a suspect “hidden station”, this station and its Access Point will use aRequest to Send/Clear to Send protocol (RTS/CTS). The station will send an RTS to theAccess Point, informing that it is going to transmit the data. Upon receipt, the Access Pointwill respond with a CTS message to all station within its range to notify all other stations todefer transmission. It will also confirm the requestor station that the Access Point has reservedit for the time-frame of the requested transmission.If the “Hidden Node” problem is an issue, please specify the packet size. The RTS mechanismwill be activated if the data size exceeds the value you set. It is highly recommended that youset the value ranging from 0 to 1500. The default value is Disable.Note: Enabling RTS Threshold would cause redundant network overhead thatcould negatively affect the throughput performance instead of providing a remedy.Frag. ThresholdFragmentation mechanism is used for improving the efficiency when high traffic flows alongin the wireless network. If your GL2454MP-0I MiniPCI Wireless Adapter often transmitlarge files in wireless network, you can enable the Fragmentation Threshold by clicking theEnable button and the mechanism will split the packet. The value can be set from 256 to1500. The default value is Disable.IRQ NO./IO AddressTo avoid device conflict, you may modify the IRQ No. and IO Address for your device (Onlyavailable under Windows NT).

-28-Status:The Status field on the Configuration menu provides the following information.State: When operating in Infrastructure mode, this field shows the MAC address of the AccessPoint with which the MiniPCI Wireless Adapter is communicating. When operating in Ad-Hoc mode, it shows the virtual MAC address used by computers participating in the Ad-Hocnetwork.Current Channel: Shows the channel on which the connection is made.Current Tx Rate: Shows the highest transmit rate of the current association.Throughput: Shows the short term transmit and receive throughput in bytes/second, and iscontinuously updated.Link Quality: Based on the quality of the received signal of the Access Point beacon. Thereare 5 states of link quality:100%~80%: Excellent link.80%~60%: Good link quality.60%~40%: Fair link quality.Under 40%: Poor or no connection.Signal Strength: Based on the received signal strength measurement of the baseband processorof the Beacon signal. Same as link quality, there are 5 states of signal strength:100%~80%: Excellent signal strength.80%~60%: Good signal strength.60%~40%: Fair signal strength.Under 40%: Poor or no signal strength.You can click the Rescan button to force the radio to rescan all available channels. If yourlink quality or signal strength is poor, rescanning can be used to push the radio off a weakAccess Point and search for a better link with another Access Point.

-29-Link Test:The Link Test tool helps you examine data transmission quality between your GL2454MP-0IMiniPCI Wireless Adapter and any workstation on the network. By entering IP address of 2remote station, setting ping interval and packet size, you may know whether communication hasbeen made successfully or not. Additionally, you may run the loopback test by clicking theLook back button to verify the communication quality between your wireless station andAccess Point. The Refresh button is used for setting the counters back to 0.AP Browser:By clicking the Rescan button, the AP Browser can display Access Points around the workingenvironment. Besides showing the ESSID of each Access Point, it also displays BSSID,Channel, Signal, Quality and Supported Rates. To join any of the displayed Access Points,highlight the Access Point you desire to connect and then click the Join BSS (when there aremore than 2 Access Points with the same ESSID), or Join ESS button to join the group.

-30-Site Survey:When the Site Survey screen is displayed, the channel quality of all 14 radio channels will bedisplayed. These channel quality measurements are shown on each gauge for the 14 radiochannels. The blue bar indicated the channel quality is clear and good. The higher the bluebar is, the better quality you have (i.e., less interference). The yellow bar indicates thechannel quality is fair and the red bar indicates the channel is busy or having severeinterference.About:The About item shows the versions of the Wireless LAN Utility, driver, firmware of theGL2454MP-0I MiniPCI Wireless Adapter. Also, the MAC address and frequency domain aredisplayed.

-31-Limited WarrantyThis Warranty constitutes the sole and exclusive remedy of any buyer or reseller’s equipmentand the sole and exclusive liability of the supplier in connection with the products and is in lieuof all other warranties, express, implied or statutory, including, but not limited to, any impliedwarranty of merchantability of fitness for a particular use and all other obligations or liabilitiesof the supplier.In no even will the supplier or any other party or person be liable to your or anyone else for anydamages, including lost profits, lost savings or other incidental or consequential damages, orinability to use the software provided on the software media even if the supplier or the otherparty person has been advised of the possibility of such damages.The following are special terms applicable to your hardware warranty as well as services youmay use during part of the warranty period. Your formal Warranty Statement, including thewarranty applicable to our Wireless LAN products, appears in the Quick Installation Guidewhich accompanies your products.Duration of Hardware Warranty: One YearReplacement, Repair or Refund Procedure for Hardware:If your unit needs a repair or replacement, return it to your dealer/distributor in its originalpackaging. When returning a defective product for Warranty, always include the followingdocuments: The Warranty Repair Card A copy of the invoice/proof of purchase, and The RMA Report Form (To receive a Return Materials Authorization form (RMA), pleasecontact the party from whom you purchased the product).Upon proof-of-purchase we shall, at its option, repair or replace the defective item at no cost tothe buyer.This warranty is contingent upon proper use in the application for which the products areintended and does not cover products which have been modified without the reseller’s approvalor which have been subjected to unusual physical or electrical demands or damaged in any way.

-32-Please complete the information below and include it along with your products.Name:Title:Company:Telephone:Fax:Email:City/State/Zipcode:Country:Product Name:Serial Number:MAC Address:Invoice Date:Product Description:If you have any further questions, please contact your local authorized reseller for support.

-33-Federal Communication CommissionInterference Statement This equipment has been tested and found to comply with the limits for a Class Bdigital device, pursuant to Part 15 of the FCC Rules. These limits are designedto provide reasonable protection against harmful interference in a residentialinstallation. This equipment generates, uses and can radiate radio frequencyenergy and, if not installed and used in accordance with the instructions, maycause harmful interference to radio communications. However, there is noguarantee that interference will not occur in a particular installation. If thisequipment does cause harmful interference to radio or television reception, whichcan be determined by turning the equipment off and on, the user is encouraged totry 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: Any changes or modifications not expressly approved by the partyresponsible for compliance could void the user's authority to operate thisequipment. This device complies with Part 15 of the FCC Rules. Operation is subject to thefollowing two conditions: (1) This device may not cause harmful interference, and(2) this device must accept any interference received, including interference thatmay cause undesired operation. IMPORTANT NOTE: FCC Radiation Exposure Statement:This equipment complies with FCC radiation exposure limits set forth for an uncontrolledenvironment. This equipment should be installed and operated with minimumdistance 20cm between the radiator & your body. This transmitter must not be co-located or operating in conjunction with any otherantenna or transmitter.

-34-This device is intended only for OEM integrators under the following conditions:1) The antenna must be installed such that 20 cm is maintained between the antennaand users, and2) 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 responsible for testing their end-product for anyadditional 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 examplecertain laptop configurations or co-location with another transmitter), then the FCCauthorization is no longer considered valid and the FCC ID can not be used on the finalproduct. In these circumstances, the OEM integrator will be responsible for re-evaluatingthe end product (including the transmitter) and obtaining a separate FCC authorization.End Product LabelingThis transmitter module is authorized only for use in device where the antenna may beinstalled such that 20 cm may be maintained between the antenna and users (forexample: Router, Access Point). The final end product must be labeled in a visible areawith the following: “Contains TX FCC ID: KA2DI-624”.Manual Information That Must be IncludedThe users manual for OEM integrators must include the following information in aprominent location “ IMPORTANT NOTE: To comply with FCC RF exposurecompliance requirements, the antenna used for this transmitter must be installed toprovide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter.