PKW-BEFW11S4V3WLAN Router

Instant Wireless™ Series Wireless Access Point Router with 4-Port Switch Use this Guide to install:BEFW11S4 ver. 3 User Guide BEFW11S4 VER 3 USER GUIDE_2nd.qxd 10/15/02 10:33 AM Page 1 BEFW11S4 VER 3 USER GUIDE_2nd.qxd 10/15/02 10:33 AM Page 2 COPYRIGHT & TRADEMARKS Copyright © 2002 Linksys, All Rights Reserved. Instant Wireless is a trademark of Linksys. Linksys and the Linksys logo are registered trademarks of Linksys Group, Inc. Microsoft, Windows, and the Windows logo are registered trademarks of Microsoft Corporation. All other trademarks and brand names are the property of their respective proprietors. LIMITED WARRANTY Linksys guarantees that every Instant Wireless™ Wireless Access Point Router with 4- Port Switch is free from physical defects in material and workmanship for one year from the date of purchase, when used within the limits set forth in the Specifications section of this User Guide. If the product proves defective during this warranty period, call Linksys Technical Support in order to obtain a Return Authorization number. BE SURE TO HAVE YOUR PROOF OF PURCHASE ON HAND WHEN CALLING. When returning a product, mark the Return Authorization number clearly on the outside of the package and include a copy of your original proof of purchase. RETURN REQUESTS CANNOT BE PROCESSED WITHOUT PROOF OF PURCHASE. All customers located outside of the United States of America and Canada shall be held responsible for shipping and han- dling charges. IN NO EVENT SHALL LINKSYS’ LIABILITY EXCEED THE PRICE PAID FOR THE PROD- UCT FROM DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAM- AGES RESULTING FROM THE USE OF THE PRODUCT, ITS ACCOMPANYING SOFT- WARE, OR ITS DOCUMENTATION. LINKSYS OFFERS NO REFUNDS FOR ITS PROD- UCTS. Linksys makes no warranty or representation, expressed, implied, or statutory, with respect to its products or the contents or use of this documentation and all accom- panying software, and specifically disclaims its quality, performance, merchantability, or fitness for any particular purpose. Linksys reserves the right to revise or update its prod- ucts, software, or documentation without obligation to notify any individual or entity. Please direct all inquiries to: Linksys P.O. Box 18558, Irvine, CA 92623. FCC STATEMENT The Instant Wireless™ Wireless Access Point Router with 4-Port Switch has been tested and complies 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 inter- ference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used according to 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 harm- ful interference to radio or television reception, which is found 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 or devices • Connect the equipment to an outlet other than the receiver’s • Consult a dealer or an experienced radio/TV technician for assistance UG-BEFW11S4 ver. 3-100302NC JL BEFW11S4 VER 3 USER GUIDE_2nd.qxd 10/15/02 10:33 AM Page 3 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 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 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 party responsible for compliance could void the user's authority to operate this 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. 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 conjunction with any other antenna or transmitter. Instant Wireless TM Series Table of Contents Chapter 1: Introduction1 The Linksys Wireless Access Point Router with 4-Port Switch1 Features1 Minimum Requirements2 An Introduction to LANs and WANs2 IP Addresses3 The Wireless Access Point Router’s Ports5 The Wireless Access Point Router’s LEDs6 Chapter 2: Connecting the Router8 Before You Start8 Connecting Your Hardware Together & Booting Up8 Chapter 3: Configuring the PCs11 Overview11 Configuring Windows 95, 98, and Millennium PCs11 Configuring Windows 2000 PCs13 Configuring Windows XP PCs15 Chapter 4: Configuring the Router17 Chapter 5: Using the Router’s Web-Based Utility 2…

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American Telecommunications Certification Body Inc. 6731 Whittier Ave, McLean, VA 22101 October 19, 2002 RE: THE LINKSYS GROUP, INC. FCC ID: PKWBEFW11S4V3 After a review of the submitted information, I have a few comments on the above referenced Application. 1) The block diagram should show the frequency of all oscillators in the RF portion of the device (CFR 2.1033(a)(5)). 2) Please supply a higher resolution photograph of the top of the board. Also, please add an additional photograph of the RF portion of the circuitry. Timothy R. Johnson Examining Engineer Direct Phone: 404-414-8071 mailto: [email protected] The items indicated above must be submitted before processing can continue on the above referenced application. Failure to provide the requested information may result in application termination. Correspondence should be considered part of the permanent submission and may be viewed from the Internet after a Grant of Equipment Authorization is issued. Please do not respond to this correspondence using the email reply button. In order for your response to be processed expeditiously, you must submit your documents through the AmericanTCB.com website. Also, please note that partial responses increase processing time and should not be submitted. Any questions about the content of this correspondence should be directed to the sender.

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FCC ID: PKW-BEFW11S4V3 ADT No.910927R03 Operational Description The transmitter of the EUT (WLAN Router) is powered by 5V power adapter. The antenna used in this product is Dipole Antenna with Reversed TNC Type connector. Under normal use condition, the user has to keep at least 20cm separation distance between radiator and the body of the user. The other instruction, please look at the users manual. DSSS Information This device is Direct Sequence Spread Spectrum, the data is mixed by pseudorandom code which is an orthogonal code. The mixed data is digital modulated by BPSK and QPSK technique depends on the data rates. The CCK coding is applied for increasing the data rate, and also the processing gain will be increased. The bit rates are 1,2,5.5,11Mbps, the symbol rates are 1,1,1.375,1.375Mbps, the chip rates are always 11Mbps. So, the Chip/symbol is 11,11,8 and 8 respectively. Although is higher bit rate, the processing gain is lower than 10, but the CCK coding used in higher bit rate will provide 2.2dB coding gain.

ADT No: 910927R03 1 FCC TEST REPORT REPORT NO.: RF910927R03 MODEL NO.: BEFW11S4 ACCORDING: FCC Guidelines for Human Exposure IEEE C95.1 APPLICANT:The Linksys Group, INC. ADDRESS:17401 Armstrong Ave. Irvine, CA 92614 ISSUED BY:Advance Data Technology Corporation LAB LOCATION:47 14th Lin, Chiapau Tsun, Linko, Taipei, Taiwan, R.O.C. 0528 ILAC MRA Lab Code: 200102-0 ADT No: 910927R03 2 RF Exposure Measurement 1. Introduction 2.4 GHz frequency band is regarded specially as a dangerous band for its heating harmfulness to the human body. That’s why microwave oven is operating in this frequency band. The manufacturer whose product is working in this frequency band is obligatory to prove the harmfulness of his product. In this document, we try to prove the safety of radiation harmfulness to the human body for our product. The limit for Maximum Permissible Exposure (MPE) specified in FCC 1.1310 is followed. The Gain of the antenna used in this product is measured in a Fully Anechoic Chamber (FAC) calibrated for antenna measurement in ADT, and also the maximum total power input to the antenna is measured. Through the Friis transmission formula and the maximum gain of the antenna, we can calculate the distance, away from the product, where the limit of MPE is reached. Although the Friis transmission formula is a far field assumption, the calculated result of that is an over-prediction for near field power density. We will take that as the worst case to specify the safety range. 2. RF Exposure Limit According to FCC 1.1310: The criteria listed in the following table shall be used to evaluate the environmental impact of human exposure to radio-frequency (RF) radiation as specified in 1.1307(b) LIMITS FOR MAXIMUM PERMISSIBLE EXPOSURE (MPE) Frequency Range (MHz) Electric Field Strength (V/m) Magnetic Field Strength (A/m) Power Density (mW/cm 2 ) Average Time (minutes) (A)Limits For Occupational / Control Exposures 300-1500......F/3006 1500-100,000......56 (B)Limits For General Population / Uncontrolled Exposure 300-1500......F/15006 1500-100,000......1.030 F = Frequency in MHz ADT No: 910927R03 3 3. Friis Formula Friis transmission formula : Pd = (Pout*G) / (4*pi*r 2 ) where Pd = power density in mW/cm 2 Pout = output power to antenna in mW G = gain of antenna in linear scale Pi = 3.1416 R = distance between observation point and center of the radiator in cm Pd is the limit of MPE, 1 mW/cm 2 . If we know the maximum Gain of the antenna and the total power input to the antenna, through the calculation, we will know the distance r where the MPE limit is reached. Ref. : David K. Cheng, Field and Wave Electromagnetics, Second Edition, Page 640, Eq. (11-133). 4 EUT Operating condition The software provided by Manufacturer enabled the EUT to transmit and receive data at lowest, middle and highest channel individually. 5 Climate Condition The temperature and related humidity: 25 deg. C and 55 % RH 6. Classification This device is not fixed inside the host equipment, it is connected with host through wire. So it is easy to be re-located in the place where at least 20 cm far away from the body of the user. Warning statement to the user for keeping at least 20cm or more separation distance with the antenna should be included in users manual. So, this device is classified as Mobile Device. ADT No: 910927R03 4 7 Test Results 7.1 Antenna Gain The maximum Gain measured in Fully Anechoic Chamber is 1dBi or 1.26 (numeric). 7.2 Output Power Into Antenna & RF Exposure Distance : CHANNEL CHANNEL FREQUENCY (MHz) OUTPUT POWER TO ANTENNA (mW) MINIMUM ALLOWABLE DISTANCE ( r ) FROM SKIN (Centi-Meter) 1241283.952.90 6243778.342.80 11246272.782.70 The minimum allowable distance is very close to the enclosure of the antenna. So, the user has no need to worry about the harmfulness of radiation. But it is recommended to always keep, at least, 20cm separation distance with the antenna.

FCC ID: PKW-BEFW11S4V3 Report No.: RF910927R031Issued: Oct. 15, 2002 FCC TEST REPORT REPORT NO.: RF910927R03 MODEL NO.: BEFW11S4 RECEIVED: Sep 27, 2002 TESTED: Aug.1 ~ Oct. 7, 2002 APPLICANT:The Linksys Group, INC. ADDRESS:17401 Armstrong Ave. Irvine, CA 92614 ISSUED BY:Advance Data Technology Corporation LAB LOCATION:47 14 th Lin, Chiapau Tsun, Linko, Taipei, Taiwan, R.O.C. This test report consists of 51pages in total. It may be duplicated completely for legal use with the approval of the applicant. It should not be reproduced except in full, without the written approval of our laboratory. The client should not use it to claim product endorsement by CNLA, NVLAP or any government agencies. The test results in the report only apply to the tested sample. 0528 ILAC MRA Lab Code: 200102-0 FCC ID: PKW-BEFW11S4V3 Report No.: RF910927R032Issued: Oct. 15, 2002 Table of Contents 1CERTIFICATION...........................................................................................4 2SUMMARY OF TEST RESULTS...................................................................5 3GENERAL INFORMATION...........................................................................6 3.1GENERAL DESCRIPTION OF EUT..............................................................6 3.2DESCRIPTION OF TEST MODES................................................................7 3.3GENERAL DESCRIPTION OF APPLIED STANDARDS...............................7 3.4DESCRIPTION OF SUPPORT UNITS..........................................................8 4TEST TYPES AND RESULTS.......................................................................9 4.1CONDUCTED EMISSION MEASUREMENT................................................9 4.1.1LIMITS OF CONDUCTED EMISSION MEASUREMENT........................................9 4.1.2TEST INSTRUMENTS..........................................................................................10 4.1.3TEST PROCEDURES..........................................................................................11 4.1.4DEVIATION FROM TEST STANDARD.................................................................11 4.1.5TEST SETUP.......................................................................................................12 4.1.6EUT OPERATING CONDITIONS.........................................................................13 4.1.7TEST RESULTS...................................................................................................14 4.2RADIATED EMISSION MEASUREMENT...................................................20 4.2.1LIMITS OF RADIATED EMISSION MEASUREMENT...........................................20 4.2.2TEST INSTRUMENTS..........................................................................................21 4.2.3TEST PROCEDURES..........................................................................................22 4.2.4DEVIATION FROM TEST STANDARD.................................................................22 4.2.5TEST SETUP.......................................................................................................23 4.2.6EUT OPERATING CONDITIONS.........................................................................23 4.2.7TEST RESULTS...................................................................................................24 4.36dB BANDWIDTH MEASUREMENT..........................................................29 4.3.1LIMITS OF 6dB BANDWIDTH MEASUREMENT..................................................29 4.3.2TEST INSTRUMENTS..........................................................................................29 4.3.3TEST PROCEDURE.............................................................................................30 4.3.4DEVIATION FROM TEST STANDARD.................................................................30 4.3.5TEST SETUP.......................................................................................................30 4.3.6EUT OPERATING CONDITIONS.........................................................................30 4.3.7TEST RESULTS...................................................................................................31 4.4MAXIMUM PEAK OUTPUT POWER..........................................................35 4.4.1LIMITS OF MAXIMUM PEAK OUTPUT POWER MEASUREMENT.....................35 4.4.2INSTRUMENTS....................................................................................................35 4.4.3TEST PROCEDURES..........................................................................................36 4.4.4DEVIATION FROM TEST STANDARD.................................................................36 FCC ID: PKW-BEFW11S4V3 Report No.: RF910927R033Issued: Oct. 15, 2002 4.4.5TEST SETUP.......................................................................................................36 4.4.6EUT OPERATING CONDITIONS.........................................................................36 4.4.7TEST RESULTS...................................................................................................37 4.4.8LIMITS OF POWER SPECTRAL DENSITY MEASUREMENT.............................38 4.4.9TEST INSTRUMENTS..........................................................................................38 4.4.10TEST PROCEDURE.............................................................................................39 4.4.11DEVIATION FROM TEST STANDARD.................................................................39 4.4.12TEST SETUP.......................................................................................................39 4.4.13EUT OPERATING CONDITION............................................................................39 4.4.14TEST RESULTS...................................................................................................40 4.5BAND EDGES MEASUREMENT................................................................44 4.5.1LIMITS OF BAND EDGES MEASUREMENT................…

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FCC ID: PKW-BEFW11S4V3 Report No.: RF910927R0349Issued: Oct. 15, 2002 5 PHOTOGRAPHS OF THE TEST CONFIGURATION CONDUCTED EMISSION TEST FCC ID: PKW-BEFW11S4V3 Report No.: RF910927R0350Issued: Oct. 15, 2002 RADIATED EMISSION TEST