RF exposure evaluation

FCC ID: OKUSBB61984

RF Exposure Info

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FCCID_4341479

SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: OKUSBB61984 Report No.: LCS190418015AEA Maximum Permissible Exposure Report Product Information FCC ID: OKUSBB61984 Product name 32”Slim Bluetooth Sound Bar Speaker Model number NHS-2012A , NHS-2012, SBB-61984, NHS-2012XX (XX means unit color, it can be A to Z or N/A) PCB board, structure and internal of these model(s) are the same, Model Declaration So no additional models were tested. Adapter Mode: GKYPS0130090UL1 Power supply Input: 100-240~ 50/60Hz, 0.5A Output: 9V 1300mA Modulation Type GFSK, π/4-DQPSK, 8-DPSK Antenna Type PCB Antenna Antenna Gain 0dBi(Max.) Hardware version V1.0 Software version V1.0 Bluetooth Version V5.0 BT FCC Operation frequency 2402MHz-2480MHz Extreme temp. Tolerance -20°C to +40°C Exposure category General population/uncontrolled environment EUT Type Production Unit Device Type Mobile Device 2. Evaluation Method Systems operating under the provisions of FCC 47 CFR section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. In accordance with 47 CFR FCC Part 2 Subpart J, section 2.1091 this device has been defined as mobile device whereby a distance of 0.2m normally can be maintained between the user and the device, and below RF Permissible Exposure limit shall comply with. In accordance with KDB447498D01 for Simultaneous transmission MPE test exclusion applies when the sum of the MPE ratios for all simultaneous transmitting antennas incorporated in a host device, based on the calculated/estimated, numerically modelled or measured field strengths or power density, is ≤ 1.0. The MPE ratio of each antenna is determined at the minimum test separation distance required by the operating configurations and exposure conditions of the host device, according to the ratio of field strengths or power density to MPE limit, at the test frequency. Either the maximum peak or spatially averaged results from measurements or numerical simulations may be used to determine the MPE ratios. Spatial averaging does not apply when MPE is estimated using simple calculations based on far-field plane-wave equivalent conditions. The antenna installation and operating requirements for the host device must meet the minimum test separation distances required by all antennas, in both standalone and simultaneous transmission operations, to satisfy compliance. 3. Limit 3. 1 Refer evaluation method ANSI C95.1–1999: IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz. FCC KDB publication 447498 D01 General 1 RF Exposure Guidance v06: Mobile and Portable Devices RF Exposure Procedures and Equipment Authorization Policies. FCC CFR 47 part1 1.1310: Radiofrequency radiation exposure limits. FCC CFR 47 part2 2.1091: Radiofrequency radiation exposure evaluation: mobile devices This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 1 of 3

SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: OKUSBB61984 Report No.: LCS190418015AEA 3. 2 Limit Limits for Maximum Permissible Exposure (MPE)/Controlled Exposure Frequency Electric Field Magnetic Field Power Density Averaging Time Range(MHz) Strength(V/m) Strength(A/m) (mW/cm²) (minute) Limits for Occupational/Controlled Exposure 0.3 – 3.0 614 1.63 (100) * 6 3.0 – 30 1842/f 4.89/f (900/f2)* 6 30 – 300 61.4 0.163 1.0 6 300 – 1500 / / f/300 6 1500 – 100,000 / / 5 6 Limits for Maximum Permissible Exposure (MPE)/Uncontrolled Exposure Frequency Electric Field Magnetic Field Power Density Averaging Time Range(MHz) Strength(V/m) Strength(A/m) (mW/cm²) (minute) Limits for Occupational/Controlled Exposure 0.3 – 3.0 614 1.63 (100) * 30 3.0 – 30 824/f 2.19/f (180/f2)* 30 30 – 300 27.5 0.073 0.2 30 300 – 1500 / / f/1500 30 1500 – 100,000 / / 1.0 30 F=frequency in MHz *=Plane-wave equivalent power density 4. MPE Calculation Method Predication of MPE limit at a given distance Equation from page 18 of OET Bulletin 65, Edition 97-01 S=PG/4πR² Where: S=power density P=power input to antenna G=power gain of the antenna in the direction of interest relative to an isotropic radiator R=distance to the center of radiation of the antenna 5. Antenna Information TPMS Receiver can only use antennas certificated as follows provided by manufacturer; Internal Antenna type and Operate frequency band Maximum antenna gain Identification antenna number Antenna 0 PCB Antenna 2402 MHz – 2480 MHz 0 dBi 6. Conducted Power Peak Conducted Output Power Mode Channel Frequency(MHz) (dBm) 0 2402 -1.494 GFSK 39 2441 -1.397 78 2480 -1.446 0 2402 0.633 π/4DQPSK 39 2441 0.795 78 2480 0.746 0 2402 1.061 8DPSK 39 2441 1.199 78 2480 1.178 This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 2 of 3

SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: OKUSBB61984 Report No.: LCS190418015AEA 7. Manufacturing Tolerance GFSK (Peak) Channel Channel 0 Channel 39 Channel 78 Target (dBm) -1.0 -1.0 -1.0 Tolerance ±(dB) 1.0 1.0 1.0 π/4DQPSK (Peak) Channel Channel 0 Channel 39 Channel 78 Target (dBm) 0 0 0 Tolerance ±(dB) 1.0 1.0 1.0 8DPSK (Peak) Channel Channel 0 Channel 39 Channel 78 Target (dBm) 1.0 1.0 1.0 Tolerance ±(dB) 1.0 1.0 1.0 8. Measurement Results 8.1 Standalone MPE As declared by the Applicant, the EUT is a wireless device used in a fix application, at least 20 cm from any body part of the user or nearby persons; from the maximum EUT RF output power, the minimum separation distance, r =20cm, as well as the gain of the used antenna refer to antenna information, the RF power density can be obtained. Antenna 0 Output power Antenna Antenna MPE Duty MPE Modulation Type Gain Gain Limits dBm mW Cycle (mW/cm2) (dBi) (linear) (mW/cm2) GFSK 0 1.0000 0 1.0 100% 0.0002 1.0000 π/4DQPSK 1 1.2589 0 1.0 100% 0.0003 1.0000 8DPSK 2 1.5849 0 1.0 100% 0.0003 1.0000 Remark: 1. Output power (Peak) including tune-up tolerance; 2. MPE evaluate distance is 20cm from user manual provide by manufacturer; 8.2 Simultaneous Transmission MPE The sample only support one BT modular and one antenna, no need consider simultaneous transmission; 9. Conclusion The measurement results comply with the FCC Limit per 47 CFR 2.1091 for the uncontrolled RF Exposure of mobile device. ----------------THE END OF REPORT--------------- This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 3 of 3


Document Created: 2019-06-28 16:15:14
Document Modified: 2019-06-28 16:15:14
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