RF Exposure Information

FCC ID: 2APP8OLSD-LY1

RF Exposure Info

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FCCID_4065693

RF EXPOSURE EVALUATION Product Name : Music Book Lights Model Name : OLSD-LY1, OLSD-LY2, OLSD-LY3 FCC ID : 2APP8OLSD-LY1 Specification : Bluetooth 4.0 Dual Mode Operation Frequency : 2402-2480MHz 79 channels For BR/EDR Number of Channel : 40 Channels For BLE Antenna Type : Internal PCB Antenna Antenna Gain : -0.58 dBi Power supply : DC 3.7V, 1200mAh Battery Device category : Portable (<20cm separation) Standard Requirement According to § 15.247(i) and § 1.1307b(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy levels in excess of the Commission’s guidelines. See KDB 447498 D01 General RF Exposure Guidance v05, section 4. 3. 1. The 1-g and 10-g SAR test exclusion thresholds for 100MHz to 6GHz at test separation distances ≤ 50mm are determined by: [ (max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)]*[ √f(GHz)] ≤3.0 for 1-g SAR and ≤7.5 for 10-g SAR extremity SAR, where  f(GHz) is the RF channel transmit frequency in GHz  Power and distance are rounded to the nearest mW and mm before calculation  The result is rounded to one decimal place for comparison. The test exclusions are applicable only when the minimum test separation distance is ≤ 50mm and for transmission frequencies between 100MHz and 6GHz. When the minimum test separation distance is <5mm, a distance of 5mm is applied to determine SAR test exclusion. Routine SAR evaluation refers to that specifically required by § 2.1093, using measurements or computer simulation. When routine SAR evaluation is not required, portable transmitters 1/3

with output power greater than the applicable low threshold require SAR evaluation to quality for TCB approval. One antenna is available for the EUT (BT product). The minimum separation distance is 5mm. For Bluetooth Classical: Channel Measurement Peak Output Power(dBm) Frequency GFSK Π/4-DQPSK 8DPSK (MHz) 2402 3.78 3.12 2.91 2441 3.49 3.18 3.00 2480 3.26 2.94 2.79 Channel Tune up Max tune up Frequency tolerance Output Peak Calculation conducted Limits (MHz) (dBm) power (mW) Result power(dBm) 2402 3±1 4 2.51 0.77860 3 2441 3±1 4 2.51 0.78490 3 2480 3±1 4 2.51 0.79114 3 2402 3±1 4 2.51 0.77860 3 2441 3±1 4 2.51 0.78490 3 2480 2±1 3 2.00 0.62843 3 2402 2±1 3 2.00 0.61847 3 2441 2±1 3 2.00 0.62347 3 2480 2±1 3 2.00 0.62843 3 2/3

For BLE Channel Frequency Peak Power (MHz) Output(dBm) 2402 -3.92 2442 -3.66 2480 -4.03 Channel Tune up Max tune up Frequency tolerance Output Peak Calculation conducted Limits (MHz) (dBm) power (mW) Result power(dBm) 2402 -3±1 -2 0.63 0.19558 3 2442 -3±1 -2 0.63 0.19712 3 2480 -4±1 -3 0.50 0.15785 3 According to KDB 447498, no stand-alone required for BT antenna, and no simultaneous SAR measurement is required. Signature Chris Du EMC Manager Date: 2018-10-30 3/3


Document Created: 2018-11-06 17:06:27
Document Modified: 2018-11-06 17:06:27
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