RF Exposure Info

FCC ID: PY3WAG302

RF Exposure Info

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FCCID_523747

FCC ID ：PY3WAG302 Compliance Certification Services Inc. Report No.：EC05-01-048FRFa Page 1 of 2 RF EXPOSURE EVALUATION 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) Frequency Range Electric Field Magnetic Field Power Density Average Time (MHz) Strength (V/m) Strength (A/m) (mW/cm2) (A) Limits for Occupational / Control Exposures 300-1,500 -- -- F/300 6 1,500-100,000 -- -- 5 6 (B) Limits for General Population / Uncontrol Exposures 300-1,500 -- -- F/1500 6 1,500-100,000 -- -- 1 30 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 where the MPE limit is reached. EUT Operating Condition A software provided by client enabled the EUT to transmit and receive data at lowest, middle and highest channel individually.

FCC ID ：PY3WAG302 Compliance Certification Services Inc. Report No.：EC05-01-048FRFa Page 2 of 2 Test Result of RF Exposure Evaluation Test Item ： RF Exposure Evaluation Data Test Mode ： Normal Operation Antenna Gain Antenna Gain：The maximum Gain measured in fully anechoic chamber is 5dBi linear scale. Output Power into Antenna & RF Exposure Evaluation Distance For normal 802.11a mode Channel Output Power Density LIMITS Channel Frequency Power to Antenna at 20cm (mW/cm2) (MHz) (dBm) (mW/cm2) 1 5180 16.17 0.026045 1 4 5240 16.39 0.027399 1 5 5260 16.50 0.028102 1 8 5320 18.32 0.042730 1 For Super A mode Channel Output Power Density LIMITS Channel Frequency Power to Antenna at 20cm (mW/cm2) (MHz) (dBm) (mW/cm2) Low 5210 16.54 0.028362 1 Middle 5250 16.15 0.025926 1 High 5290 18.05 0.040154 1 Note : The power density Pd (4th column) at a distance of 20cm calculated from the friis transmission formula is far below the limit of 1 mW/cm2 . The EUT is classified as mobile product. So, RF exposure limit warning or SAR test are not required.


Document Created: 2005-03-14 15:30:11
Document Modified: 2005-03-14 15:30:11
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