RF expo

FCC ID: PPQ-DSD300

RF Exposure Info

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FCCID_1751593

Report No. 124522R-RFUSP42V01 RF Exposure Evaluation declaration Product Name : SPEAKER DOCK Model No. : DSD-300 FCC ID : PPQ-DSD300 Applicant : Lite-On Technology Corp. Address : 4F,90,Chien 1 Road,Chung-Ho,Taipei Hsien 235,Taiwan,R.O.C. Date of Receipt : Apr. 25., 2012 Date of Declaration : July 10, 2012 Report No. : 124522R-RFUSP42V01 The declaration results relate only to the samples calculated. The declaration shall not be reproduced except in full without the written approval of QuieTek Corporation. This report must not be used to claim product endorsement by NVLAP any agency of the U.S. Government Page: 1 of 8

Report No. 124522R-RFUSP42V01 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) Frequency Range Electric Field Magnetic Field Power Density Average Time 2 (MHz) Strength (V/m) Strength (A/m) (mW/cm ) (Minutes) (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. 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. Page: 2 of 8

Report No. 124522R-RFUSP42V01 1.3. Test Result of RF Exposure Evaluation Product : SPEAKER DOCK Test Item : RF Exposure Evaluation Test Site : No.3 OATS 802.11b (1Mbps) Output Power Into Antenna & RF Exposure Evaluation Distance_20cm (6.54dBi): Output Power to Antenna Power Density at R = 20 cm Channel Frequency (MHz) (mW) (mW/cm2) 1 2412.00 96.1612 0.086244 6 2437.00 105.9254 0.095002 11 2462.00 111.4295 0.099938 The RF exposure at 20 cm is below limit. 802.11g (6Mbps) Output Power Into Antenna & RF Exposure Evaluation Distance_20cm (6.54dBi): Output Power to Antenna Power Density at R = 20 cm Channel Frequency (MHz) (mW) (mW/cm2) 1 2412.00 208.9296 0.187383 6 2437.00 304.0885 0.272728 11 2462.00 204.6445 0.183540 The RF exposure at 20 cm is below limit. Page: 3 of 8


Document Created: 2012-07-24 17:29:06
Document Modified: 2012-07-24 17:29:06
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