SA190626D06_1938_FCC SAR Exclusion

FCC ID: C3K1938

RF Exposure Info

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FCCID_4467444

FCC SAR Exclusion Report FCC SAR Exclusion Report Report No. : SA190626D06 Applicant : MICROSOFT CORPORATION Address : ONE MICROSOFT WAY REDMOND, WA 98052-6399, U.S.A. Product : Bluetooth Accessory – Left FCC ID : C3K1938 Brand : Microsoft Model No. : 1938 Standards : FCC 47 CFR Part 2 (2.1093), IEEE C95.1:1992, IEEE Std 1528:2013 KDB 865664 D01 v01r04, KDB 865664 D02 v01r02, KDB 447498 D01 v06 Sample Received Date : Jun. 26, 2019 Date of Evaluation : Aug. 15, 2019 Lab Address : No. 47-2, 14th Ling, Chia Pau Vil., Lin Kou Dist.,New Taipei City, Taiwan Test Location : No. 19, Hwa Ya 2nd Rd, Wen Hwa Vil, Kwei Shan Dist., Taoyuan City 33383, Taiwan CERTIFICATION: The above equipment have been tested by Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch–Lin Kou Laboratories, and found compliance with the requirement of the above standards. The test record, data evaluation & Equipment Under Test (EUT) configurations represented herein are true and accurate accounts of the measurements of the sample’s SAR characteristics under the conditions specified in this report. It should not be reproduced except in full, without the written approval of our laboratory. The client should not use it to claim product certification, approval, or endorsement by TAF or any government agencies. Prepared By : Rona Chen / Specialist Approved By : Gordon Lin / Assistant Manager FCC Accredited No.: TW0003 This report is for your exclusive use. Any copying or replication of this report to or for any other person or entity, or use of our name or trademark, is permitted only with our prior written permission. This report sets forth our findings solely with respect to the test samples identified herein. The results set forth in this report are not indicative or representative of the quality or characteristics of the lot from which a test sample was taken or any similar or identical product unless specifically and expressly noted. Our report includes all of the tests requested by you and the results thereof based upon the information that you provided to us. You have 60 days from date of issuance of this report to notify us of any material error or omission caused by our negligence, provided, however, that such notice shall be in writing and shall specifically address the issue you wish to raise. A failure to raise such issue within the prescribed time shall constitute your unqualified acceptance of the completeness of this report, the tests conducted and the correctness of the report contents. Unless specific mention, the uncertainty of measurement has been explicitly taken into account to declare the compliance or non-compliance to the specification. Report Format Version 5.0.0 Page No. : 1 of 8 Report No. : SA190626D06 Issued Date : Aug. 23, 2019

FCC SAR Exclusion Report Table of Contents Release Control Record ............................................................................................................................................................... 3 1. Summary of Maximum SAR Value ....................................................................................................................................... 4 2. Description of Equipment Under Test ................................................................................................................................. 5 3. SAR Measurement Evaluation .............................................................................................................................................. 6 3.1 Maximum Output Power ............................................................................................................................................... 6 3.1.1 Maximum Target Conducted Power ................................................................................................................. 6 3.1.2 Measured Conducted Power Result ................................................................................................................ 6 4.1 SAR Testing Exclusions ............................................................................................................................................... 7 4. Information of the Testing Laboratories .............................................................................................................................. 8 Appendix A. Photographs of EUT and Setup Report Format Version 5.0.0 Page No. : 2 of 8 Report No. : SA190626D06 Issued Date : Aug. 23, 2019

FCC SAR Exclusion Report Release Control Record Report No. Reason for Change Date Issued SA190626D06 Initial release Aug. 23, 2019 Report Format Version 5.0.0 Page No. : 3 of 8 Report No. : SA190626D06 Issued Date : Aug. 23, 2019

FCC SAR Exclusion Report 1. Summary of Maximum SAR Value Highest SAR-1g Equipment Mode Head Class (W/kg) DSS Bluetooth EDR Not Required Note: 1. The SAR criteria (Head & Body: SAR-1g1.6 W/kg, and Extremity: SAR-10g 4.0 W/kg)for general population/uncontrolled exposure is specified in FCC 47 CFR part 2 (2.1093) and ANSI/IEEE C95.1-1992. Report Format Version 5.0.0 Page No. : 4 of 8 Report No. : SA190626D06 Issued Date : Aug. 23, 2019

FCC SAR Exclusion Report 2. Description of Equipment Under Test EUT Type Bluetooth Accessory – Left FCC ID C3K1938 Brand Name Microsoft Model Name 1938 Tx Frequency Bands Bluetooth : 2402 ~ 2480 (Unit: MHz) Uplink Modulations Bluetooth : GFSK, π/4-DQPSK, 8-DPSK Maximum Tune-up Conducted Power Please refer to section 4.6.1 of this report (Unit: dBm) Antenna Type PCB Antenna EUT Stage Engineering Sample Note: 1. The above EUT information is declared by manufacturer and for more detailed features description please refers to the manufacturer's specifications or User's Manual. List of Accessory: Brand Name VARTA Model Name CP1254 Battery Power Rating 3.7Vdc, 60mAh Type Li-ion Report Format Version 5.0.0 Page No. : 5 of 8 Report No. : SA190626D06 Issued Date : Aug. 23, 2019

FCC SAR Exclusion Report 3. SAR Measurement Evaluation 3.1 Maximum Output Power 3.1.1 Maximum Target Conducted Power The maximum conducted average power (Unit: dBm) including tune-up tolerance is shown as below. <Bluetooth> Mode Channel Frequency (MHz) Tune-up Power 0 2402 5 Bluetooth EDR 39 2441 5 78 2480 5 0 2402 -5 Bluetooth LE 19 2440 -5 39 2480 -5 3.1.2 Measured Conducted Power Result The measuring conducted average power (Unit: dBm) is shown as below. <Bluetooth> Mode Channel Frequency (MHz) Average Power 0 2402 4.19 Bluetooth EDR 39 2441 4.17 78 2480 4.28 0 2402 -6.43 Bluetooth LE 19 2440 -6.37 39 2480 -6.41 Report Format Version 5.0.0 Page No. : 6 of 8 Report No. : SA190626D06 Issued Date : Aug. 23, 2019

FCC SAR Exclusion Report 4.1 SAR Testing Exclusions According to KDB 447498 D01, the SAR test exclusion condition is based on source-based time-averaged maximum conducted output power, adjusted for tune-up tolerance, and the minimum test separation distance required for the exposure conditions. The SAR exclusion threshold is determined by the following formula. 1. For the test separation distance <= 50 mm When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. 2. For the test separation distance > 50 mm, and the frequency at 100 MHz to 1500 MHz 3. For the test separation distance > 50 mm, and the frequency at > 1500 MHz to 6 GHz Max. Max. Rear Face Left Side Right Side Top Side Bottom Side Tune-up Tune-up Ant. to Require Ant. to Require Ant. to Require Ant. to Require Ant. to Require Mode Calculated Calculated Calculated Calculated Calculated Power Power Surface Result SAR Surface Result SAR Surface Result SAR Surface Result SAR Surface Result SAR (dBm) (mW) (mm) Testing? (mm) Testing? (mm) Testing? (mm) Testing? (mm) Testing? BT 5 3 17.76 0.27 No 12.5 0.38 No 12.5 0.38 No 2.45 0.94 No 22.55 0.21 No Note: 1. When separation distance <= 50 mm and the calculated result shown in above table is <= 3.0, the SAR testing exclusion is applied. 2. When separation distance > 50 mm and the device output power is less than the calculated result (power threshold, mW) shown in above table, the SAR testing exclusion is applied. Summary: Since the SAR testing for all device orientations apply SAR test exclusion per KDB 447498, SAR testing for this device is not required. Report Format Version 5.0.0 Page No. : 7 of 8 Report No. : SA190626D06 Issued Date : Aug. 23, 2019

FCC SAR Exclusion Report 4. Information of the Testing Laboratories We, Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch, were founded in 1988 to provide our best service in EMC, Radio, Telecom and Safety consultation. Our laboratories are accredited and approved according to ISO/IEC 17025. If you have any comments, please feel free to contact us at the following: Taiwan HwaYa EMC/RF/Safety Lab: Add: No. 19, Hwa Ya 2nd Rd, Wen Hwa Vil., Kwei Shan Hsiang, Taoyuan Hsien 333, Taiwan, R.O.C. Tel: 886-3-318-3232 Fax: 886-3-327-0892 Taiwan LinKou EMC/RF Lab: Add: No. 47-2, 14th Ling, Chia Pau Vil., Linkou Dist., New Taipei City 244, Taiwan, R.O.C. Tel: 886-2-2605-2180 Fax: 886-2-2605-1924 Taiwan HsinChu EMC/RF/Telecom Lab: st Add: E-2, No.1, Li Hsin 1 Road, Hsinchu Science Park, Hsinchu City 30078, Taiwan, R.O.C. Tel: 886-3-666-8565 Fax: 886-3-666-8323 Email: service.adt@tw.bureauveritas.com Web Site: www.bureauveritas-adt.com The road map of all our labs can be found in our web site also. ---END--- Report Format Version 5.0.0 Page No. : 8 of 8 Report No. : SA190626D06 Issued Date : Aug. 23, 2019

FCC SAR Exclusion Report Appendix A. Photographs of EUT and Setup The setup photographs for SAR testing are shown as follows. Report Format Version 5.0.0 Issued Date : Aug. 23, 2019 Report No. : SA190626D06


Document Created: 2019-10-02 16:49:31
Document Modified: 2019-10-02 16:49:31
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