RF Exposure calculation

FCC ID: I88N611

RF Exposure Info

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FCCID_1001052

RF Exposure Evaluation Declaration Product Name ： 802.11n Wireless LAN Module Model No. ： N611 FCC ID ： I88N611 Applicant ： ZyXEL Communication Corporation Address ： No.6, Innovation Rd II, Science-Based Industrial Park, Hsin-Chu, Taiwan Date of Receipt ： 2008/08/12 Issued Date ： 2008/09/08 Report No. ： 088S063-RF-US The test results relate only to the samples tested. The test results shown in the test report are traceable to the national/international standard through the calibration of the equipment and evaluated measurement uncertainty herein. This report must not be used to claim product endorsement by CNLA, NVLAP, NIST or any agency of the Government. The test report shall not be reproduced except in full without the written approval of QuieTek Corporation.

Report No： 088S063-RF-US Test Report Certification Issued Date : 2008/09/08 Report No. : 088S063-RF-US Product Name : 802.11n Wireless LAN Module Applicant : ZyXEL Communication Corporation Address : No.6, Innovation Rd II, Science-Based Industrial Park, Hsin-Chu, Taiwan Applicant : ZyXEL Communication (Wuxi) Corp. Address : Wuxi New District 60#-E Jiangsu PRC Model No. : N611 FCC ID : I88N611 EUT Voltage : DC 3.3V Trade Name : ZyXEL Applicable Standard : FCC OET 65 Test Result : Complied Performed Location : SuZhou EMC laboratory No.99 Hongye Rd., Suzhou Industrial Park Loufeng Hi-Tech Development Zone., SuZhou, China TEL: +86-512-6251-5088 / FAX: +86-512-6251-5098 FCC Registration Number: 800392 Documented By : ( Any Liu ) Reviewed By : ( Marlin Chen ) Approved By : ( Gene Chang ) Page: 2 of 7

Report No： 088S063-RF-US Laboratory Information We , QuieTek Corporation, are an independent EMC and safety consultancy that was established the whole facility in our laboratories. The test facility has been accredited by the following accreditation Bodies in compliance with ISO 17025, EN 45001 and Guide 25: Taiwan R.O.C. : BSMI, DGT, CNLA Germany : TUV Rheinland Norway : Nemko, DNV USA : FCC, NVLAP Japan : VCCI The related certificate for our laboratories about the test site and management system can be downloaded from QuieTek Corporation’s Web Site : http://tw.quietek.com/modules/myalbum/ The address and introduction of QuieTek Corporation’s laboratories can be founded in our Web site : http://www.quietek.com/ If you have any comments, Please don’t hesitate to contact us. Our contact information is as below: HsinChu Testing Laboratory : No.75-2, 3rd Lin, Wangye Keng, Yonghxing Tsuen, Qionglin Shiang, Hsinchu County 307, Taiwan, R.O.C. TEL:+886-3-592-8858 / FAX:+886-3-592-8859 E-Mail : service@quietek.com LinKou Testing Laboratory : No. 5, Ruei-Shu Valley, Ruei-Ping Tsuen, Lin-Kou Shiang, Taipei, Taiwan, R.O.C. TEL : +886-2-8601-3788 / FAX : 886-2-8601-3789 E-Mail : service@quietek.com Suzhou Testing Laboratory : No.99 Hongye Rd., Suzhou Industrial Park Loufeng Hi-Tech Development Zone., SuZhou, China TEL : +86-512-6251-5088 / FAX : 86-512-6251-5098 E-Mail : service@quietek.com Page: 3 of 7

Report No： 088S063-RF-US 1. RF Exposure Evaluation 1.1. Limits According to FCC 1.1310: The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency (RF) radiation as specified in 1.1307(b) LIMITS FOR MAXIMUM PERMISSIBLE EXPOSURE (MPE) Electric Magnetic Power Average Frequency Field Field Density Time Range (MHz) Strength Strength (mW/cm2) (Minutes) (V/m) (A/m) (A) Limits for Occupational/ Control Exposures 300-1500 -- -- F/300 6 1500-100,000 -- -- 5 6 (B) Limits for General Population/ Uncontrolled Exposures 300-1500 -- -- F/1500 6 1500-100,000 -- -- 1 30 F= Frequency in MHz Friis Formula Friis transmission formula: Pd = (Pout*G)/(4*pi*r2) Where Pd = power density in mW/cm2 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 id the limit of MPE, 1 mW/cm2 . 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. Page: 4 of 7

Report No： 088S063-RF-US 1.2. Test Procedure Software provided by client enabled the EUT to transmit and receive data at lowest, middle and highest channel individually. The temperature and related humidity: 18℃and 78％ RH. 1.3. Test Result of RF Exposure Evaluation Product : 802.11n Wireless LAN Module Test Item : RF Exposure Evaluation Test Site : AC-4 802.11b (DAC0) (2412 - 2462MHz) RF Exposure Measurement Results: Antenna Gain (5dBi) Channel Frequency Output Power to Antenna Power Density at R = 20 cm Channel (MHz) (mW) (mW/cm2) 01 2412.00 56.1048 0.0353 06 2437.00 50.5825 0.0318 11 2462.00 49.2040 0.0310 802.11b (DAC1) (2412 - 2462MHz) RF Exposure Measurement Results: Antenna Gain (5dBi) Channel Frequency Output Power to Antenna Power Density at R = 20 cm Channel (MHz) (mW) (mW/cm2) 01 2412.00 59.7035 0.0376 06 2437.00 61.3762 0.0386 11 2462.00 66.9885 0.0421 802.11g (DAC0) (2412 - 2462MHz) RF Exposure Measurement Results: Antenna Gain (5dBi) Channel Frequency Output Power to Antenna Power Density at R = 20 cm Channel (MHz) (mW) (mW/cm2) 01 2412.00 103.7528 0.0653 06 2437.00 101.1579 0.0636 11 2462.00 94.8418 0.0597 Page: 5 of 7

Report No： 088S063-RF-US 802.11g (DAC1) (2412 - 2462MHz) RF Exposure Measurement Results: Antenna Gain (5dBi) Channel Frequency Output Power to Antenna Power Density at R = 20 cm Channel (MHz) (mW) (mW/cm2) 01 2412.00 112.7197 0.0709 06 2437.00 121.6186 0.0765 11 2462.00 129.1219 0.0812 802.11n (20MHz) (DAC0) (2412 - 2462MHz) RF Exposure Measurement Results: Antenna Gain (5dBi) Channel Frequency Output Power to Antenna Power Density at R = 20 cm Channel (MHz) (mW) (mW/cm2) 01 2412.00 97.9490 0.0616 06 2437.00 101.8591 0.0641 11 2462.00 97.2747 0.0612 802.11n (20MHz) (DAC1) (2412 - 2462MHz) RF Exposure Measurement Results: Antenna Gain (5dBi) Channel Frequency Output Power to Antenna Power Density at R = 20 cm Channel (MHz) (mW) (mW/cm2) 01 2412.00 112.9796 0.0711 06 2437.00 120.2264 0.0756 11 2462.00 128.8250 0.0810 802.11n (20MHz) (DAC0 and DAC1) (2412 - 2462MHz) RF Exposure Measurement Results: Antenna Gain (5dBi) Channel Frequency Output Power to Antenna Power Density at R = 20 cm Channel (MHz) (mW) (mW/cm2) 01 2412.00 181.9701 0.1145 06 2437.00 190.9853 0.1202 11 2462.00 215.2782 0.1354 Page: 6 of 7

Report No： 088S063-RF-US 802.11n (40MHz) (DAC0) (2422 - 2452MHz) RF Exposure Measurement Results: Antenna Gain (5dBi) Channel Frequency Output Power to Antenna Power Density at R = 20 cm Channel (MHz) (mW) (mW/cm2) 03 2422.00 87.9023 0.0553 06 2437.00 95.7194 0.0602 09 2452.00 89.5365 0.0563 802.11n (40MHz) (DAC1) (2422 - 2452MHz) RF Exposure Measurement Results: Antenna Gain (5dBi) Channel Frequency Output Power to Antenna Power Density at R = 20 cm Channel (MHz) (mW) (mW/cm2) 03 2422.00 11.6950 0.0074 06 2437.00 121.0598 0.0762 09 2452.00 126.1828 0.0794 802.11n (40MHz) (DAC0 and DAC1) (2422 - 2452MHz) RF Exposure Measurement Results: Antenna Gain (5dBi) Channel Frequency Output Power to Antenna Power Density at R = 20 cm Channel (MHz) (mW) (mW/cm2) 03 2422.00 153.8155 0.0968 06 2437.00 211.3489 0.1330 09 2452.00 196.7886 0.1238 Page: 7 of 7


Document Created: 2008-09-11 15:40:47
Document Modified: 2008-09-11 15:40:47
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