SAR Exclusion Report V3

FCC ID: C3K1797

RF Exposure Info

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FCCID_4311197

FCC Part 1 Subpart I FCC Part 2 Subpart J RF EXPOSURE REPORT FOR Wireless Input Device MODEL NUMBER: 1797 FCC ID: C3K1797 REPORT NUMBER: 12781776-S1V3 ISSUE DATE: 6/8/2019 Prepared for Microsoft Corporation One Microsoft Way Redmond, WA 95052 United States Prepared by UL VERIFICATION SERVICES INC. 47173 BENICIA STREET FREMONT, CA 94538, U.S.A. TEL: (510) 771-1000 NVLAP LAB CODE 200065-0

REPORT NO: 12781776-S1V3 DATE: 6/8/2019 Revision History Issue Rev. Date Revisions Revised By V1 4/26/2019 Original issue V2 5/23/2019 Section 5.1 – Updated device description Dave Weaver V3 6/08/2019 Section 5.1 – Updated device description Dave Weaver Page 2 of 6 UL Verification Services Inc. Doc. No.: 1.0 This report shall not be reproduced without the written approval of UL Verification Services Inc. .

REPORT NO: 12781776-S1V3 DATE: 6/8/2019 TABLE OF CONTENTS 1. ATTESTATION OF TEST RESULTS ..................................................................................4 2. TEST METHODOLOGY ......................................................................................................5 3. REFERENCES ....................................................................................................................5 4. FACILITIES AND ACCREDITATION ..................................................................................5 5. DEVICE UNDER TEST ........................................................................................................5 5.1. Description ....................................................................................................................5 5.2. Wireless Technologies and Output Power.....................................................................5 6. STANDALONE SAR TEST EXCLUSION CONSIDERATIONS ...........................................6 Page 3 of 6 UL Verification Services Inc. Doc. No.: 1.0 This report shall not be reproduced without the written approval of UL Verification Services Inc. .

REPORT NO: 12781776-S1V3 DATE: 6/8/2019 1. ATTESTATION OF TEST RESULTS COMPANY NAME: Microsoft Corporation One Microsoft Way Redmond, WA 95052 United States DUT DESCRIPTION: Wireless Input Device MODEL: 1797 SERIAL NUMBER: N/A APPLICABLE STANDARDS STANDARD TEST RESULTS FCC PART 1 SUBPART I & PART 2 SUBPART J Pass Note: The results documented in this report apply only to the tested sample, under the conditions and modes of operation as described herein. This document may not be altered or revised in any way unless done so by UL Verification Services Inc. and all revisions are duly noted in the revisions section. Any alteration of this document not carried out by UL Verification Services Inc. will constitute fraud and shall nullify the document. Approved & Released For UL Verification Services Inc. By: Dave Weaver Operations Leader UL Verification Services Inc. Page 4 of 6 UL Verification Services Inc. Doc. No.: 1.0 This report shall not be reproduced without the written approval of UL Verification Services Inc. .

REPORT NO: 12781776-S1V3 DATE: 6/8/2019 2. TEST METHODOLOGY All calculations were made in accordance with FCC KDB 447498 D01 v06 3. REFERENCES Output power is excerpted from the applicable test reports or client declarations. 4. FACILITIES AND ACCREDITATION The test sites and measurement facilities used to collect data are located at 47173 and 47266 Benicia Street, Fremont, California, USA UL Verification Services Inc. is accredited by NVLAP, Laboratory Code 200065-0. 5. DEVICE UNDER TEST 5.1. Description The Wireless Input Device is a handheld input device. The Device supports WLAN 802.11a/g/nHT20 and Bluetooth. The antenna to user separation distance was assumed to be 0 mm as this is the most conservative condition. 5.2. Wireless Technologies and Output Power Wireless technologies Frequency bands Operating Mode Maximum Output Power 802.11g 2.4 GHz 6.5dBm (4.47mW) 802.11n HT20 Wi-Fi 802.11a 5 GHz 9.5dBm (8.91mW) 802.11n HT20 Bluetooth 2.4 GHz GFSK and EDR 8.0dBm (6.31mW) Page 5 of 6 UL Verification Services Inc. Doc. No.: 1.0 This report shall not be reproduced without the written approval of UL Verification Services Inc. .

REPORT NO: 12781776-S1V3 DATE: 6/8/2019 6. STANDALONE SAR TEST EXCLUSION CONSIDERATIONS The DUT is a handheld device, therefore the device was assessed against the 10g SAR limits. From KDB 447498, for transmission frequencies 100 MHz to 6 GHz and test separation distances ≤ 50 mm, the 10-g SAR test exclusion thresholds are determined by the following: [(max. power of channel, including tune-up tolerance, mW) / (min. test separation distance, mm)] · [√f (GHz)] ≤ 7.5 where: • f (GHz) is the RF channel transmit frequency in GHz; • Power and distance are rounded to the nearest mW and mm before calculation; • For a separation distance of less than 5mm, 5mm is used. The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. The result is rounded to one decimal place for comparison with the 7.5 threshold. The table below shows that at the maximum output power and with a separation distance of 5mm or less, SAR test exclusion applies. Max. tune-up Pow er Min. test SAR test RF Air RF Exposure Frequency separation exclusion interface Conditions (GHz) (dBm) (mW) distance (mm) Result* Wi-Fi 2.4GHz Extremity 2.480 6.50 4.00 5 1.3 Wi-FI 5GHz Extremity 5.825 9.50 9.00 5 4.3 Bluetooth Extremity 2.480 8.00 6.00 5 1.9 Conclusion: *: The computed value is ≤ 7.5; therefore, the DUT qualifies for Standalone SAR test exclusion. END OF REPORT Page 6 of 6 UL Verification Services Inc. Doc. No.: 1.0 This report shall not be reproduced without the written approval of UL Verification Services Inc. .


Document Created: 2019-06-09 19:06:48
Document Modified: 2019-06-09 19:06:48
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