PY3WAB102Dual Band Wireless LAN Access Point

     

 





















     






 




  









  

     







 

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Intertek Testing Services ETL SEMKO FCC ID. : PY3WAB102 Report No.: EME-021017 Page 1 of 6 Maximum Permissible Exposure (MPE) Evaluation Report Report No. : EME-021017 Model No. : WAB102 Issued Date : Sep. 11, 2002 Applicant : NETGEAR, Inc. 4500 Great America Parkway, Santa Clara, CA 95054 USA Test By : Intertek Testing Services Taiwan Ltd. No. 11, Ko-Tze-Nan Chia-Tung Li, Shiang-Shan District, Hsinchu, Taiwan, R.O.C. This test report consists of 6 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 ITS Laboratory. The test result in this report only applies to the tested sample. Kaysi Chen Project Engineer Reviewed By Elton Chen Intertek Testing Services ETL SEMKO FCC ID. : PY3WAB102 Report No.: EME-021017 Page 2 of 6 Table of Contents Summary of Tests ............................................................................................................. 3 1. Introduction .................................................................................................................. 4 2. RF Exposure Limit ....................................................................................................... 4 3. RF Exposure calculations ............................................................................................. 5 Intertek Testing Services ETL SEMKO FCC ID. : PY3WAB102 Report No.: EME-021017 Page 3 of 6 Summary of Tests MPE Evaluation meet FCC OET No. 65: 1997/ IEEE C95.1-1999 802.11 a+b Dual Band Wireless Access Point-Model: WAB102 FCC ID: PY3WAB102 Test Reference Results MPE Evaluation FCC Guidelines for Human Exposure IEEE C95.1 Complies Intertek Testing Services ETL SEMKO FCC ID. : PY3WAB102 Report No.: EME-021017 Page 4 of 6 1. Introduction The EUT operates in the 2.4GHz and 5GHz 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 distance from the product. The limit for Maximum Permissible Exposure (MPE) specified in FCC 1.1310 is followed. 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. 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 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 Intertek Testing Services ETL SEMKO FCC ID. : PY3WAB102 Report No.: EME-021017 Page 5 of 6 3. RF Exposure calculations From FCC 1.1310 table 1, the maximum permissible RF exposure for an uncontrolled environment is 1mW/(cm*cm), where, (cm*cm) = square cm. The electric field generated for a 1mW/(cm*cm) exposure (S) is calculated as follows: S = E*E/Z where, S = Power density E = Electric field Z = Impedance so, 1mW/(cm*cm) = 10 W/(m*m) Z is 377 ohm of the impedance of free space, where E and H field are perpendicular. Thus the Electric field to produce a 1mW/(cm*cm) exposure is: E = (10 x 377) ½ = 61.4 V/m, which is equivalent to 1mW/(cm*cm) For EUT operates at 2.4GHz: Maximum conducted peak output power is 17.70 dBm and maximum antenna gain is 3 dBi. The maximum radiated output power resulted in 117.48 mW. Using the relationship between electric field E, effective radiated power in watts P, and distance in meters D, the corresponding distance D to produce a 1mW/(cm*cm) is calculated by the following expression: D = (P x 30) ½ /E = (117.48 x 10 x 30) ½ /61.4 = 3.057 cm where, P: maximum effective radiated power measured, 20.7 dBm (117.48 mW) E: electric field equivalent to 1mW/(cm*cm), 61.4 V/m The minimum distance by calculation and normal use distance were listed in the table as below: E.I.R.P. Calculated RF Exposure Allowable Minimum Separation Distance(cm) Normal Use Minimum RF Exposure Separation Distance(cm) dBm mW 20.7 117.48 3.057 20 The calculated Minimum allowable distance is very close to the antenna, and is far away from the normal use distance. Intertek Testing Services ETL SEMKO FCC ID. : PY3WAB102 Report No.: EME-021017 Page 6 of 6 For EUT operates at 5GHz: Maximum conducted peak output power is 21.63 dBm and maximum antenna gain is 5 dBi. The maximum radiated output power resulted in 460.25 mW. Using the relationship between electric field E, effective radiated power in watts P, and distance in meters D, the corresponding distance D to produce a 1mW/(cm*cm) is calculated by the following expression: D = (P x 30) ½ /E = (460.25 x 10 x 30) ½ /61.4 = 6.05 cm where, P: maximum effective radiated power measured, 26.63 dBm (460.25 mW) E: electric field equivalent to 1mW/(cm*cm), 61.4 V/m The minimum distance by calculation and normal use distance were listed in the table as below: E.I.R.P. Calculated RF Exposure Allowable Minimum Separation Distance(cm) Normal Use Minimum RF Exposure Separation Distance(cm) dBm mW 26.63 460.25 6.05 20 The calculated Minimum allowable distance is very close to the antenna, and is far away from the normal use distance.

      













 


















































































         



 
   
    
 
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