RF Exposure

FCC ID: H8NRTV7805VW

RF Exposure Info

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FCCID_3124370

MRT Technology (Suzhou) Co., Ltd Report No.: 1607RSU01502 Phone: +86-512-66308358 Report Version: V01 Fax: +86-512-66308368 Issue Date: 08-26-2015 Web: www.mrt-cert.com RF Exposure Evaluation Declaration FCC ID: H8NRTV7805VW APPLICANT: ASKEY COMPUTER CORP Application Type: Certification Product: VDSL Model No.: RTV7805VW(RoHS) Trademark: ASKEY FCC Classification: Digital Transmission System (DTS) Reviewed By : ( Robin Wu ) Approved By : ( Marlin Chen ) The test results relate only to the samples tested. The test results shown in the test report are traceable to the national/international standards through the calibration of the equipment and evaluated measurement uncertainty herein. The test report shall not be reproduced except in full without the written approval of MRT Technology (Suzhou) Co., Ltd. FCC ID: H8NRTV7805VW Page Number: 1 of 5

Report No.: 1607RSU01502 Revision History Report No. Version Description Issue Date Note 1607RSU01502 Rev. 01 Initial report 08-26-2016 Valid FCC ID: H8NRTV7805VW Page Number: 2 of 5

Report No.: 1607RSU01502 1. PRODUCT INFORMATION 1.1. Equipment Description Product Name VDSL Model No. RTV7805VW(RoHS) Brand Name ASKEY WLAN Specification Frequency Range 802.11b/g/n-HT20: 2412 ~ 2462 MHz 802.11n-HT40: 2422 ~ 2452 MHz Maximum Peak Output 802.11b: 19.43dBm Power 802.11g: 24.79dBm 802.11n-HT20: 27.11dBm 802.11n-HT40: 27.11dBm Maximum Average 802.11b: 17.61dBm Output Power 802.11g: 17.21dBm 802.11n-HT20: 20.38dBm 802.11n-HT40: 20.14dBm Type of Modulation 802.11b: DSSS 802.11g/n: OFDM 1.2. Antenna Description Antenna Frequency Tx Per Chain Max Antenna Gain (dBi) Directional Gain Type Band Paths (dBi) (MHz) Ant 0 Ant 1 PCB 2412 ~2462 2 2.88 4.71 3.89 Antenna Note: The EUT supports MIMO technology at 802.11n mode, and that technology is uncorrelated. (1) Uncorrelated signals include, but are not limited to, signals transmitted in any of the following modes:  Unequal Antenna gains, with equal transmit powers. For Antenna gains given by G1, G2, …, GN dBi transmit signals are correlated, then  Directional gain = 10*log[(10G1/10 + 10G2/10 + … + 10GN/10)/NANT] dBi 2.4GHz Directional Gain = 10*log[(102.88/10 + 104.71/10)/2] = 3.89 dBi FCC ID: H8NRTV7805VW Page Number: 3 of 5

Report No.: 1607RSU01502 2. RF Exposure Evaluation 2.1. 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 Calculation 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 is the limit of MPE, 1mW/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. FCC ID: H8NRTV7805VW Page Number: 4 of 5

Report No.: 1607RSU01502 2.2. Test Result of RF Exposure Evaluation Product VDSL Test Item RF Exposure Evaluation Antenna Gain: refer to section 1.2 Test Mode Frequency Band Maximum Average Power Density at Limit (MHz) Output Power R = 20 cm (mW/cm2) (dBm) (mW/cm2) 802.11b/g/n-HT20/ 2412 ~ 2462 20.38 0.0532 1 n-HT40 CONCULISON: Therefore, the Max Power Density at R (20 cm) = 0.0532mW/cm2 < 1mW/cm2. So the EUT complies with the requirement. The End FCC ID: H8NRTV7805VW Page Number: 5 of 5


Document Created: 2017-12-14 00:31:30
Document Modified: 2017-12-14 00:31:30
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