I88G470802.11g Wireless Ethernet Adapter

G-470 802.11g Wireless Ethernet Adapter User’s Guide Version 1.00 Edition 1 8/2006 G-470 User’s Guide Copyright3 Copyright Copyright © 2006 by ZyXEL Communications Corporation. The contents of this publication may not be reproduced in any part or as a whole, transcribed, stored in a retrieval system, translated into any language, or transmitted in any form or by any means, electronic, mechanical, magnetic, optical, chemical, photocopying, manual, or otherwise, without the prior written permission of ZyXEL Communications Corporation. Published by ZyXEL Communications Corporation. All rights reserved. Disclaimer ZyXEL does not assume any liability arising out of the application or use of any products, or software described herein. Neither does it convey any license under its patent rights nor the patent rights of others. ZyXEL further reserves the right to make changes in any products described herein without notice. This publication is subject to change without notice. Trademarks ZyNOS (ZyXEL Network Operating System) is a registered trademark of ZyXEL Communications, Inc. Other trademarks mentioned in this publication are used for identification purposes only and may be properties of their respective owners. G-470 User’s Guide 4Certifications Certifications Federal Communications Commission (FCC) Interference Statement The device complies with Part 15 of FCC rules. Operation is subject to the following two conditions: • This device may not cause harmful interference. • This device must accept any interference received, including interference that may cause undesired operations. 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 commercial environment. 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. If this equipment does cause harmful interference to radio/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 or more of the following measures: 1Reorient or relocate the receiving antenna. 2Increase the separation between the equipment and the receiver. 3Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. 4Consult the dealer or an experienced radio/TV technician for help. Caution 1The equipment complies with FCC RF radiation exposure limits set forth for an uncontrolled environment, under 47 CFR 2.1091 paragraph (d)(2). 2To comply with FCC RF exposure compliance requirements, a separation distance of at least 20 cm must be maintained between the antenna of this device and all persons. 3This Transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. Notice 1 Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. This product has been designed for the WLAN 2.4 GHz network throughout the EC region and Switzerland, with restrictions in France. This Class B digital apparatus complies with Canadian ICES-003. G-470 User’s Guide Certifications5 Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada. 注意 ! 依據 低功率電波輻射性電機管理辦法 第十二條 經型式認證合格之低功率射頻電機，非經許可，公司、商號或使用 者均不得擅自變更頻率、加大功率或變更原設計之特性及功能。 第十四條 低功率射頻電機之使用不得影響飛航安全及干擾合法通信；經發現 有干擾現象時，應立即停用，並改善至無干擾時方得繼續使用。 前項合法通信，指依電信規定作業之無線電信。低功率射頻電機須忍 受合法通信或工業、科學及醫療用電波輻射性電機設備之干擾。 Viewing Certifications 1Go to http://www.zyxel.com. 2Select your product from the drop-down list box on the ZyXEL home page to go to that product's page. 3Select the certification you wish to view from this page. ZyXEL declares that US model of G-470 (FCC ID: 188G470) is limited in CH1 - CH11 for 2.4G band by specific firmware controlled by the manufacturer and is not user changeable. G-470 User’s Guide 6ZyXEL Limited Warranty ZyXEL Limited Warranty ZyXEL warrants to the original end user (purchaser) that this product is free from any defects in materials or workmanship for a period of up to two (2) years from the date of purchase. During the warranty period, and upon proof of purchase, should the product have indications of failure due to faulty workmanship and/or materials, ZyXEL will, at its discretion, repair or replace the defective products or components without charge for either parts or labor, and to whatever extent it shall deem necessary to restore the product or components to proper operating condition. Any replacement will consist of a new or re-manufactured functionally equivalent product of equal or higher value, and will be solely at the discretion of ZyXEL. This warranty shall not apply if the product has been modified, misused, tampered with, damaged by an act of God, or subjected to abnormal working conditions. Note Repair or replacement, as provided under this warranty, is the exclusive remedy of the purchaser. This warranty is in lieu of all other warranties, express or implied, including any implied warranty of merchantability or fitness for a particular use or purpose. ZyXEL shall in no event be held liable for indirect or consequential damages of any kind to the purchaser. To obtain the services of this warranty, contact ZyXEL's Service Center for your Return Material Authorization number (RMA). Products must be returned Postage Prepaid. It is recommended that the unit be insured when shipped. Any returned products without proof of purchase or those with an out-dated warranty will be repaired or replaced (at the discretion of ZyXEL) and the customer will be billed for parts and labor. All repaired or replaced products will be shipped by ZyXEL to the corresponding return address, Postage Paid. This warranty gives you specific legal rights, and you may also…

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G-470 User’s Guide Chapter 6 Wireless Screens55 CHAPTER6 Wireless Screens This chapter discusses how to configure wireless settings and wireless security on your ZyXEL Device. 6.1 Wireless LAN Overview This section introduces the wireless LAN (WLAN) and some basic scenarios. 6.1.1 BSS (Infrastructure) A Basic Service Set (BSS), also called an Infrastructure network, exists when all communications between wireless stations or between a wireless station and a wired network client go through one access point (AP). Intra-BSS traffic is traffic between wireless stations in the BSS. When Intra-BSS is enabled, wireless station A and B can access the wired network and communicate with each other. When Intra-BSS is disabled, wireless station A and B can still access the wired network but cannot communicate with each other. Figure 26 Basic Service set G-470 User’s Guide 56Chapter 6 Wireless Screens 6.1.2 ESS An Extended Service Set (ESS) consists of a series of overlapping BSSs, each containing an access point, with each access point connected together by a wired network. This wired connection between APs is called a Distribution System (DS). An ESSID (ESS IDentification) uniquely identifies each ESS. All access points and their associated wireless stations within the same ESS must have the same ESSID in order to communicate. Figure 27 Extended Service Set 6.2 Wireless LAN Basics This section describes the wireless LAN network terms. 6.2.1 Channel A channel is the radio frequency or frequencies used by IEEE 802.11b wireless devices. Channels available depend on your geographical area. You may have a choice of channels (for your region) so you should use a different channel from an adjacent AP (access point) to reduce interference. Interference occurs when radio signals from different access points overlap, causing signal disruption and degrading performance. Adjacent channels partially overlap, however. To avoid interference due to overlap, your AP should be on a channel at least five channels away from a channel that an adjacent AP is using. For example, if your region has 11 channels and an adjacent AP is using channel 1, then you need to select a channel between 6 or 11. G-470 User’s Guide Chapter 6 Wireless Screens57 6.2.2 SSID The SSID (Service Set Identity) is a unique name shared among all wireless devices in a wireless network. Wireless devices must have the same SSID to communicate with each other. 6.2.3 RTS/CTS A hidden node occurs when two stations are within range of the same access point, but are not within range of each other. The following figure illustrates a hidden node. Both stations are within range of the access point (AP) or wireless gateway, but out of range of each other, so they cannot “hear” each other; that is they do not know if the channel is currently being used. Therefore, they are considered hidden from each other. Figure 28 RTS/CTS When station A sends data to the AP, it might not know that the station B is already using the channel. If these two stations send data at the same time, collisions may occur when both sets of data arrive at the AP at the same time, resulting in a loss of messages for both stations. RTS/CTS is designed to prevent collisions due to hidden nodes. An RTS/CTS defines the biggest size data frame you can send before an RTS (Request To Send)/CTS (Clear to Send) handshake is invoked. When a data frame exceeds the RTS/CTS value you set (between 0 to 2432 bytes), the station that wants to transmit this frame must first send an RTS (Request To Send) message to the AP for permission to send it. The AP then responds with a CTS (Clear to Send) message to all other stations within its range to notify them to defer their transmission. It also reserves and confirms with the requesting station the time frame for the requested transmission. Stations can send frames smaller than the specified RTS/CTS directly to the AP without the RTS (Request To Send)/CTS (Clear to Send) handshake. You should only configure RTS/CTS if the possibility of hidden nodes exists on your network and the “cost” of resending large frames is more than the extra network overhead involved in the RTS (Request To Send)/CTS (Clear to Send) handshake. G-470 User’s Guide 58Chapter 6 Wireless Screens If the RTS/CTS value is greater than the Fragmentation Threshold value (see next), then the RTS (Request To Send)/CTS (Clear to Send) handshake will never occur as data frames will be fragmented before they reach RTS/CTS size. Note: Enabling the RTS Threshold causes redundant network overhead that could negatively affect the throughput performance instead of providing a remedy. 6.2.4 Fragmentation Threshold A Fragmentation Threshold is the maximum data fragment size (between 256 and 2432 bytes) that can be sent in the wireless network before the ZyXEL Device will fragment the packet into smaller data frames. A large Fragmentation Threshold is recommended for networks not prone to interference while you should set a smaller threshold for busy networks or networks that are prone to interference. If the Fragmentation Threshold value is smaller than the RTS/CTS value (see previously) you set then the RTS (Request To Send)/CTS (Clear to Send) handshake will never occur as data frames will be fragmented before they reach RTS/CTS size. 6.3 Configuring Wireless Click Wireless to display the Wireless Settings screen. Figure 29 Wireless: Wireless Settings G-470 User’s Guide Chapter 6 Wireless Screens59 The following table describes the labels in this screen. Table 7 Wireless: Wireless Settings LABELDESCRIPTION SSIDYour ZyXEL Device must have the same SSID as the AP you want to connect to. Enter a descriptive name (up to 32 printable characters) for the wireless LAN. Spaces are allowed. Note: If you are configuring the device from a computer connected to the wireless LAN and you change the device's SSID, channel or security settings, you will lose your wireless connection when you press Apply to confirm. Y…

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FCC ID: I88G470 Date: June 20, 2006 Federal Communications Commission Authorization and Evaluation Division Confidentiality Request Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, the Applicant hereby requests confidential treatment of information accompanying this Application as outlined below: Schematics Block Diagram The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these matters might be harmful to the Applicant and provide unjustified benefits to its competitors. The Applicant understands that pursuant to Rule 0.457, disclosure of this Application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely yours, __ Yi Wang Section Manager EMC/Safety Engineering Section

Letter of Agency FCC ID: I88G470 Date: June 20, 2006 To whom it may concern, I, an officer of ZyXEL Communications Corporation, hereby authorize Advance Data Technology Corporation (ADT) of Taiwan to act on our behalf in front of the Federal Communications Commission with respect to all matters relating to certification of the equipment, ZyXEL G-470, required in the FCC Part 15C approval until further notice. Sincerely yours, Yi Wang Section Manager EMC/Safety Engineering Section

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FCC ID: I88G470 Report No.: RF950607L13 Technical Description This device is an 802.11g Wireless Ethernet Adapter, which operates in the 2.4GHz frequency spectrum with throughput of up to 54Mbps which OFDM technique will be applied. If the signal to noise radio is too poor which could not support 54Mbps, the 11Mbps data rate with DSSS technique will be applied. The transmitter of the EUT is powered by AC adapter or POE. The antenna used in this product is Dipole antenna with R-SMA connector ad Print PCB antenna without connector. The other instruction, please have a look at the users manual.

FCC ID: I88G470 Report No: SA950607L13 1 RF EXPOSURE REPORT REPORT NO.: SA950607L13 MODEL NO.: G-470 ACCORDING: FCC Guidelines for Human Exposure IEEE C95.1 APPLICANT: ZyXEL Communications Corporation ADDRESS: No. 6, Innovation Road II, Science Park, Hsinchu 300 Taiwan, R.O.C. ISSUED BY: Advance Data Technology Corporation LAB ADDRESS: No. 47, 14 th Ling, Chia Pau Tsuen, Lin Kou Hsiang 244, Taipei Hsien, Taiwan, R.O.C. TEST LOCATION: No. 19, Hwa Ya 2 nd Rd., Wen Hwa Tsuen, Kwei Shan Hsiang, Taoyuan Hsien 333, Taiwan, R.O.C. FCC ID: I88G470 Report No: SA950607L13 2 RF Exposure Measurement (Mobile Device) 1. Introduction 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 FCC ID: I88G470 Report No: SA950607L13 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 If we know the maximum Gain of the antenna and the total power input to the antenna, through the calculation, we will know the MPE value at distance 20cm. 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. Classification The antenna of the product, under normal use condition, is at least 20cm away from the body of the user. Warning statement for keeping 20cm-separation distance and the prohibition of operating next to a person has been printed on the user’s manual. So, this product is classified as the Mobile Device. FCC ID: I88G470 Report No: SA950607L13 4 6 Test Results 6.1 Antenna Gain The maximum Gain measured in Fully Anechoic Chamber is 4dBi or 2.511886 (numeric). 6.2 Output Power Into Antenna & RF Exposure value at distance 20cm: For 802.11b DSSS MODULATION: Channel Channel Frequency (MHz) Output Power to Antenna (mW) Power Density (mW/cm 2 ) Limit of Power Density (mW/cm 2 ) 12412180.3020.0901.0 62437334.1950.1671.0 112462152.7570.0761.0 For 802.11g OFDM MODULATION: Channel Channel Frequency (MHz) Output Power to Antenna (mW) Power Density (mW/cm 2 ) Limit of Power Density (mW/cm 2 ) 12412229.6150.1151.0 62437615.1770.3071.0 112462205.1160.1031.0

Report No.: RF950607L131Report Format Version 2.0.4 FCC TEST REPORT REPORT NO.: RF950607L13 MODEL NO.: G-470 RECEIVED: Jun. 07, 2006 TESTED: Jun. 13 ~ Jun. 29, 2006 ISSUED: Jul. 03, 2006 APPLICANT: ZyXEL Communications Corporation ADDRESS: No. 6, Innovation Road II, Science Park, Hsinchu 300 Taiwan, R.O.C. ISSUED BY:Advance Data Technology Corporation LAB ADDRESS:47 14 th Lin, Chiapau Tsun, Linko, Taipei, Taiwan, R.O.C. TEST LOCATION:No. 19, Hwa Ya 2 nd Rd., Kueishan, Taoyuan, Taiwan, R.O.C. This test report consists of 77 pages 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, A2LA or any government agencies. The test results in the report only apply to the tested sample. No. 2177-01 Report No.: RF950607L132Report Format Version 2.0.4 Table of Contents 1CERTIFICATION ....................................................................................................................... 4 2SUMMARY OF TEST RESULTS............................................................................................... 5 2.1MEASUREMENT UNCERTAINTY............................................................................................ 5 3GENERAL INFORMATION ....................................................................................................... 6 3.1GENERAL DESCRIPTION OF EUT ......................................................................................... 6 3.2DESCRIPTION OF TEST MODES ........................................................................................... 7 3.2.1CONFIGURATION OF SYSTEM UNDER TEST....................................................................... 7 3.2.2TEST MODE APPLICABILITY AND TESTED CHANNEL DETAIL ........................................... 8 3.3GENERAL DESCRIPTION OF APPLIED STANDARDS ........................................................ 10 3.4DESCRIPTION OF SUPPORT UNITS.................................................................................... 10 4TEST TYPES AND RESULTS ..................................................................................................11 4.1CONDUCTED EMISSION MEASUREMENT.......................................................................... 11 4.1.1LIMITS OF CONDUCTED EMISSION MEASUREMENT ........................................................11 4.1.2TEST INSTRUMENTS .............................................................................................................11 4.1.3TEST PROCEDURES ............................................................................................................. 12 4.1.4DEVIATION FROM TEST STANDARD ................................................................................... 12 4.1.5TEST SETUP .......................................................................................................................... 13 4.1.6EUT OPERATING CONDITIONS............................................................................................ 13 4.1.7TEST RESULTS ...................................................................................................................... 14 4.2RADIATED EMISSION MEASUREMENT............................................................................... 26 4.2.1LIMITS OF RADIATED EMISSION MEASUREMENT ............................................................ 26 4.2.2TEST INSTRUMENTS ............................................................................................................ 27 4.2.3TEST PROCEDURES ............................................................................................................. 28 4.2.4DEVIATION FROM TEST STANDARD ................................................................................... 28 4.2.5TEST SETUP .......................................................................................................................... 29 4.2.6EUT OPERATING CONDITIONS............................................................................................ 29 4.2.7TEST RESULTS ...................................................................................................................... 30 4.36dB BANDWIDTH MEASUREMENT ...................................................................................... 39 4.3.1LIMITS OF 6dB BANDWIDTH MEASUREMENT ................................................................... 39 4.3.2TEST INSTRUMENTS ............................................................................................................ 39 4.3.3TEST PROCEDURE ............................................................................................................... 40 4.3.4DEVIATION FROM TEST STANDARD ................................................................................... 40 4.3.5TEST SETUP .......................................................................................................................... 40 4.3.6EUT OPERATING CONDITIONS............................................................................................ 40 4.3.7TEST RESULTS ...................................................................................................................... 41 4.4MAXIMUM PEAK OUTPUT POWER ...................................................................................... 47 4.4.1LIMITS OF MAXIMUM PEAK OUTPUT POWER MEASUREMENT ...................................... 47 4.4.2TEST INSTRUMENTS ............................................................................................................ 47 4.4.3TEST PROCEDURES ............................................................................................................. 48 Report No.: RF950607L133Report Format Version 2.0.4 4.4.4DEVIATION FROM TEST STANDARD ................................................................................... 48 4.4.5T…

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1 PHOTOGRAPHS OF THE TEST CONFIGURATION CONDUCTED EMISSION TEST _ TEST MODE A 2 CONDUCTED EMISSION TEST _ TEST MODE B 3 RADIATED EMISSION TEST _ TEST MODE A 4 RADIATED EMISSION TEST _ TEST MODE B