S-174-FCCISED-SAR-1

FCC ID: C3K1853

RF Exposure Info

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FCCID_4446057

RF Exposure Evaluation Report For MODEL NO. 1853 FCC ID: C3K1853 IC ID: 3048A-1853 Test Report No. S-174-FCCISED-SAR-1 Issue Date: August 27, 2019 FCC CFR47 Part 2.1093 Industry Canada RSS-102: Issue 5 Prepared by Microsoft EMC Laboratory 17760 NE 67th Ct, Redmond WA, 98052, U.S.A. 425-421-9799 TESTING CERT #3472.01 Report V2.0

1 Record of Revisions Revision Date Section Page(s) Summary of Changes Author/Revised By: 1.0 08/27/2019 All All Version 1.0 Wei Sun Report#: S-174-FCCISED-SAR-1 Issued: 08/27/2019 Page 2 of 9 Microsoft EMC Laboratory

Table of Contents 1 Record of Revisions ............................................................................................................ 2 2 Product Description............................................................................................................. 5 3 Deviations from Standards .................................................................................................. 5 4 Facilities and Accreditations ................................................................................................ 6 4.1 Test Facility.................................................................................................................. 6 4.2 Accreditations .............................................................................................................. 6 5 SAR Test Exclusion ............................................................................................................ 7 5.1 SAR Test Exclusion Criteria ......................................................................................... 7 5.2 FCC ............................................................................................................................. 7 FCC SAR Test Exclusion Evaluation .................................................................... 7 5.3 ISED ............................................................................................................................ 8 IC SAR Test Exclusion Evaluation ........................................................................ 8 Report#: S-174-FCCISED-SAR-1 Issued: 08/27/2019 Page 3 of 9 Microsoft EMC Laboratory

Test Report Attestation Microsoft Corporation Model: 1853 FCC ID: C3K1853 IC ID: 3048A-1853 Applicable Standards Specification Test Result FCC CFR47 Part 2.1093 Industry Canada RSS-102 Issue 5 Pass Microsoft EMC Laboratory attests that the product model identified in this report has been tested to and meets the requirements identified in the above standards. The test results in this report solely pertains to the specific sample tested, under the conditions and operating modes as provided by the customer. This report shall not be used to claim product certification, approval, or endorsement by A2LA or any agency of any Government. Reproduction, duplication or publication of extracts from this test report requires prior written approval of Microsoft EMC Laboratory. Written By: Wei Sun Reviewed/ Issued By: Zack Gray SAR/Radio Test Engineer SAR Test Lead Report#: S-174-FCCISED-SAR-1 Issued: 08/27/2019 Page 4 of 9 Microsoft EMC Laboratory

2 Product Description Company Name: Microsoft Corporation Address: One Microsoft Way City, State, Zip: Redmond, WA 98052-6399 Customer Contact: Wei Sun Functional Description of Wireless Input Accessory Device the EUT: Model: 1853 FCC ID: C3K1853 IC ID: 3048A-1853 Radio Description: Bluetooth LE Frequency Range of 2.4- 2.4835 GHz Operation: Max Antenna Gain: -2.41 dBi (2.4GHz) EUT Classification: DTS device Equipment Design State: Production Equipment Condition: Good RF Exposure Conditions: Extremity Exposure, Body Exposure 3 Deviations from Standards None. Report#: S-174-FCCISED-SAR-1 Issued: 08/27/2019 Page 5 of 9 Microsoft EMC Laboratory

4 Facilities and Accreditations 4.1 Test Facility All test facilities used to collect the test data are located at Microsoft EMC Laboratory, 17760 NE 67th Ct, Redmond WA, 98052, USA 4.2 Accreditations The lab is established and follows procedures as outlined in IEC/ISO 17025 and A2LA accreditation requirements. A2LA Accredited Testing Certificate Number: 3472.01 Report#: S-174-FCCISED-SAR-1 Issued: 08/27/2019 Page 6 of 9 Microsoft EMC Laboratory

5 SAR Test Exclusion 5.1 SAR Test Exclusion Criteria The minimum separation distance of 5mm is used for the evaluation. 5.2 FCC According to FCC KDB 447498 D01 General RF Exposure Guidance v06 Section 4.3.1, the 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm is defined as ( . , , ) 𝑋 [√f(GHz)] ≤ 3.0 ( . , ) 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 FCC SAR Test Exclusion Evaluation The EUT is excluded from routine SAR evaluation measurements since the SAR test exclusion criteria are met. Frequency Output Output Separation SAR SAR Result (GHz) power power Distance Exclusion Exclusion including including (mm) Calculation Calculation tune-up tune-up Threshold tolerance tolerance (dBm) (mW) SAR 2.48 -4.0 0.398 5 0.125 <3.0 Testing Excluded Report#: S-174-FCCISED-SAR-1 Issued: 08/27/2019 Page 7 of 9 Microsoft EMC Laboratory

5.3 ISED The SAR exclusion thresholds from RSS-102 Issue 5 are shown below. IC SAR Test Exclusion Evaluation The EUT is excluded from routine SAR evaluation measurements, since the SAR test exclusion criteria are met. Table 3. SAR Test Exclusion Frequency Separation Output Output Antenna EIRP EIRP SAR Result (GHz) Distance power power Gain (dBm) (mW) Exclusion (mm) including including (dBi) Limit tune-up tune-up (mW) tolerance tolerance (dBm) (mW) SAR 2.48 5 -4.0 0.395 -2.41 -6.41 0.229 4 Testing Excluded Report#: S-174-FCCISED-SAR-1 Issued: 08/27/2019 Page 8 of 9 Microsoft EMC Laboratory

End of Report Report#: S-174-FCCISED-SAR-1 Issued: 08/27/2019 Page 9 of 9 Microsoft EMC Laboratory


Document Created: 2019-09-11 16:27:05
Document Modified: 2019-09-11 16:27:05
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