rf exposure

FCC ID: MSQMWOM4L

RF Exposure Info

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FCCID_428688

Report No. 045L137FI RF Exposure Evaluation declaration Product Name : Motherboard Model No. : P5GD2 Premium, P5GD2 Deluxe FCC ID MSQMWOM4L Applicant : ASUSTeK COMPUTER INC. Address : 4FL., No. 150, Li-Te Rd., Peitou, Taipei, Taiwan, R.O.C. Date of Receipt : May 25, 2004 Date of Declaration : May 29, 2004 Report No. : 045L137FI 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 4 Version: 1.0

Report No. 045L137FI 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 4 Version: 1.0

Report No. 045L137FI 1.3. Test Result of RF Exposure Evaluation Product : Motherboard Test Item : RF Exposure Evaluation Test Site : No.3 OATS Antenna Gain Antenna Gain: The maximum Gain measured in fully anechoic chamber is 2.94dBi in linear scale. 802.11b Output Power Into Antenna & RF Exposure Evaluation Distance (Golden: 2.94dBi): Output Power to Antenna Power Density at R = 20 cm Channel Frequency (MHz) (mW) (mW/cm2) 1 2412.00 17.9061 0.0070 6 2437.00 39.1742 0.0153 11 2462.00 53.8270 0.0211 802.11g Output Power Into Antenna & RF Exposure Evaluation Distance (Golden: 2.94 dBi): Output Power to Antenna Power Density at R = 20 cm Channel Frequency (MHz) (mW) (mW/cm2) 1 2412.00 8.0353 0.0031 6 2437.00 16.1065 0.0063 11 2462.00 24.1546 0.0095 The distance r (4th column) calculated from the Fries transmission formula is far shorter than 20 cm separation requirement. Page: 3 of 4 Version: 1.0

Report No. 045L137FI Antenna Gain Antenna Gain: The maximum Gain measured in fully anechoic chamber is 2.45dBi in linear scale. 802.11b Output Power Into Antenna & RF Exposure Evaluation Distance (INPAQ: 2.45dBi): Output Power to Antenna Power Density at R = 20 cm Channel Frequency (MHz) (mW) (mW/cm2) 1 2412.00 17.9061 0.0063 6 2437.00 39.1742 0.0137 11 2462.00 53.8270 0.0188 802.11g Output Power Into Antenna & RF Exposure Evaluation Distance (INPAQ: 2.45dBi): Output Power to Antenna Power Density at R = 20 cm Channel Frequency (MHz) (mW) (mW/cm2) 1 2412.00 8.0353 0.0028 6 2437.00 16.1065 0.0056 11 2462.00 24.1546 0.0084 The distance r (4th column) calculated from the Fries transmission formula is far shorter than 20 cm separation requirement. Page: 4 of 4 Version: 1.0


Document Created: 2004-06-04 10:56:19
Document Modified: 2004-06-04 10:56:19
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