RF Exposure Info

FCC ID: I88G663

RF Exposure Info

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FCCID_623925

FCC ID. :I88G663 Report No.: EME-051278 Page 1 of 5 Maximum Permissible Exposure (MPE) Evaluation Report Report No. : EME-051278 Model No. : G-663 Issued Date : Jan. 23, 2006 Applicant : ZyXEL Communications Corporation No. 6, Innovation Rd II, Science-Based Industrial Park, Hsin-Chu, Taiwan Test By : Intertek Testing Services Taiwan Ltd. No. 11, Lane 275, Ko-Nan 1 Street, Chia-Tung Li, Shiang-Shan District, Hsinchu City, Taiwan This test report consists of 43 pages in total. It may be duplicated completely for legal use with the allowance of the applicant. It shall not be reproduced except in full, without the written approval of Intertek Laboratory. The test result(s) in this report only applies to the tested sample(s). Project Engineer Reviewed By Kevin Chen Jerry Liu

FCC ID. :I88G663 Report No.: EME-051278 Page 2 of 5 Table of Contents Summary of Tests ............................................................................................................. 3 1. Introduction .................................................................................................................. 4 2. RF Exposure Limit ....................................................................................................... 4 3. RF Exposure calculations ............................................................................................. 5 4. Test results .................................................................................................................... 5

FCC ID. :I88G663 Report No.: EME-051278 Page 3 of 5 Summary of Tests MPE Evaluation meet FCC OET No. 65: 1997/ IEEE C95.1-1999 802.11G WIRELESS LAN MODULE -Model: G-663 FCC ID: I88G663 Test Reference Results MPE Evaluation FCC Guidelines for Human Exposure IEEE C95.1 Complies

FCC ID. :I88G663 Report No.: EME-051278 Page 4 of 5 1. Introduction The EUT operates in the 2.4GHz ISM band. Due to the EUT (include antenna) at its normal operation distance is at least 20 cm from the human body, the EUT was defined as a Mobile Device. The reason to do the MPE Evaluation is to avoid the RF hazard to human body. The maximum output power and gain of the antenna were used to calculate the limited Power density (S) at 20cm distance away from the product. The limit for Maximum Permissible Exposure (MPE) specified in FCC 1.1310 is followed. 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 Electric Field Magnetic Field Power Density Average Time Range Strength Strength (mW/cm2) (minutes) (MHz) (V/m) (A/m) (A) Limits for Occupational / Control Exposures 30-300 61.4 0.163 1.0 6 300-1500 - - F/300 6 1500-100,000 - - 5 6 (B) Limits for General Population / Uncontrolled Exposure 30-300 27.5 0.073 0.2 30 300-1500 - - F/1500 30 1500-100,000 - - 1.0 30 F= Frequency in MHz

FCC ID. :I88G663 Report No.: EME-051278 Page 5 of 5 3. RF Exposure calculations From §FCC 1.1310 table 1, the maximum permissible RF exposure for an uncontrolled environment is 1mW/(cm2) Power density (S) is calculated by the following formula: S = (P * G)/4πR2 where, S = Power density (mW/cm2) P = Output power to antenna (mW) R = Distance between radiating structure and observation point (cm) G = Gain of antenna in numeric π = 3.1416 Example: Assume a mobile device operates at 2412MHz and its maximum output power is 50mW, and the maximum gain of antenna is 1 (numeric) /0dBi. then the power density (S) = (50 * 1)/4*π*202 = 0.00995 (mW/cm2) 4. Test results Test Mode: 802.11b operation mode (DSSS Modulation) Channel Maximum Output power Power density Limit of Channel Frequency antenna gain to antenna power density (MHz) (numeric) (mW) (mW/cm2) (mW/cm2) 1 2412 3.16 69.50 0.043725033 1.0 6 2437 3.16 161.06 0.101328157 1.0 11 2462 3.16 70.31 0.044231345 1.0 Test Mode: 802.11g operation mode (OFDM Modulation) Channel Maximum Output power Power density Limit of Channel Frequency antenna gain to antenna power density (MHz) (numeric) (mW) (mW/cm2) (mW/cm2) 1 2412 3.16 160.32 0.100862597 1.0 6 2437 3.16 376.70 0.236990067 1.0 11 2462 3.16 180.30 0.113430578 1.0 The Notice in Installation Manual has been stated as below: While installing and operating this transmitter, the radio frequency exposure limit of 1mW/(cm*cm) may be exceeded at distances close to the transmitter. therefore, the user must maintain a minimum distance of 20 cm from the device at all time.


Document Created: 2006-01-27 11:40:48
Document Modified: 2006-01-27 11:40:48
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