12802195-E9V2 FCC MPE REPORT

FCC ID: C3K1876

RF Exposure Info

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FCCID_4447895

TEST REPORT Report Number. : 12802195-E9V2 Applicant : Microsoft Corp. One Microsoft Way Redmond, WA 98052 Model : 1876 FCC ID : C3K1876 EUT Description : Portable Computing Device Test Standard(s) : FCC 47 CFR PART 1 SUBPART I FCC 47 CFR PART 2 SUBPART J Date Of Issue: September 17, 2019 Prepared by: UL Verification Services Inc. 47173 Benicia Street Fremont, CA 94538 U.S.A. TEL: (510) 319-4000 FAX: (510) 661-0888 NVLAP LAB CODE 200065-0

REPORT NO: 12802195-E9V2 DATE: 9/17/2019 FCC ID: C3K1876 Revision History Issue Rev. Date Revisions Revised By V1 9/17/2019 Initial Issue -- V2 9/17/2019 Section 6: DC Update & Antenna term update Henry Lau Page 2 of 14 UL VERIFICATION SERVICES INC. FORM NO: CCSUP4701I 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 319-4000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of . UL Verification Services Inc.

REPORT NO: 12802195-E9V2 DATE: 9/17/2019 FCC ID: C3K1876 TABLE OF CONTENTS 1. ATTESTATION OF TEST RESULTS ..................................................................................4 2. TEST METHODOLOGY ......................................................................................................5 3. REFERENCES ....................................................................................................................5 4. FACILITIES AND ACCREDITATION ..................................................................................5 5. MAXIMUM PERMISSIBLE EXPOSURE (LIMITS AND EQUATIONS) ................................6 5.1. FCC RULES .................................................................................................................6 5.2. EQUATIONS.................................................................................................................7 6. RF EXPOSURE RESULTS..................................................................................................9 Page 3 of 14 UL VERIFICATION SERVICES INC. FORM NO: CCSUP4701I 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 319-4000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of . UL Verification Services Inc.

REPORT NO: 12802195-E9V2 DATE: 9/17/2019 FCC ID: C3K1876 1. ATTESTATION OF TEST RESULTS COMPANY NAME: Microsoft Corp. One Microsoft Way Redmond, WA 98052 EUT DESCRIPTION: Portable Computing Device MODEL: 1876 APPLICABLE STANDARDS STANDARD TEST RESULTS FCC PART 1 SUBPART I & PART 2 SUBPART J Complies UL Verification Services Inc. tested the above equipment in accordance with the requirements set forth in the above standards. The test results show that the equipment tested is capable of demonstrating compliance with the requirements as documented in this report. The results documented in this report apply only to the tested sample, under the conditions and modes of operation as described herein. It is the manufacturer's responsibility to assure that additional production units of this model are manufactured with identical electrical and mechanical components. All samples tested were in good operating condition throughout the entire test program. Measurement Uncertainties are published for informational purposes only and were not taken into account unless noted otherwise. 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. This report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, any agency of the Federal Government, or any agency of the U.S. government. Approved & Released For UL Verification Services Inc. By: Prepared By: Francisco de Anda Henry Lau Project Engineer/Operations Leader Project Engineer CONSUMER TECHNOLOGY DIVISION CONSUMER TECHNOLOGY DIVISION UL Verification Services Inc. UL Verification Services Inc. Page 4 of 14 UL VERIFICATION SERVICES INC. FORM NO: CCSUP4701I 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 319-4000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of . UL Verification Services Inc.

REPORT NO: 12802195-E9V2 DATE: 9/17/2019 FCC ID: C3K1876 2. TEST METHODOLOGY All calculations were made in accordance with FCC Parts 1.1310, 2.1091, 2.1093, KDB 447498 D01 v06, KDB 447498 D03 V01, IEEE Std C95.1-2005, IEEE Std C95.3-2002. 3. REFERENCES All measurements were made as documented in test report UL Verification Services Inc. Document 12802195-E6, E7 for operation for licensed bands, UL Verification Services Inc. Document 12802195-E1, E2, E3 for operation in the 2.4 GHz band and UL Verification Services Inc. Document 12802195-E4 for operation in the 5 GHz bands. Output power, Duty cycle and Antenna gain data is excerpted from the applicable test reports. 4. FACILITIES AND ACCREDITATION The test sites and measurement facilities used to collect data are located at 47173 and 47266 Benicia Street, and 47658 Kato Road, Fremont, California, USA. Line conducted emissions are measured only at the 47173 address. The following table identifies which facilities were utilized for radiated emission measurements documented in this report. Specific facilities are also identified in the test results sections. The above test sites and facilities are covered under FCC Test Firm Registration # 208313. Chambers above are covered under Industry Canada company address and respective code 2324A. UL Verification Services Inc. is accredited by NVLAP, Laboratory Code 200065-0. Page 5 of 14 UL VERIFICATION SERVICES INC. FORM NO: CCSUP4701I 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 319-4000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of . UL Verification Services Inc.

REPORT NO: 12802195-E9V2 DATE: 9/17/2019 FCC ID: C3K1876 5. MAXIMUM PERMISSIBLE EXPOSURE (LIMITS AND EQUATIONS) 5.1. FCC RULES §1.1310 The criteria listed in Table 1 shall be used to evaluate the environmental impact of human exposure to radio-frequency (RF) radiation as specified in §1.1307(b), except in the case of portable devices which shall be evaluated according to the provisions of §2.1093 of this chapter. T ABLE 1—LIMITS FOR MAXIMUM PERMISSIBLE EXPOSURE (MPE) Frequency range Electric field strength Magnetic field strength Power density Averaging time (MHz) (V/m) (A/m) (mW/cm2) (minutes) (A) Limits for Occupational/Controlled Exposure 0.3-3.0 614 1.63 *100 6 3.0-30 1842/f 4.89/f *900/f 2 6 30-300 61.4 0.163 1.0 6 300-1,500 f/300 6 1,500-100,000 5 6 (B) Limits for General Population/Uncontrolled Exposure 0.3-1.34 614 1.63 *100 30 1.34-30 824/f 2.19/f *180/f 2 30 30-300 27.5 0.073 0.2 30 300-1,500 f/1500 30 1,500-100,000 1.0 30 f = frequency in MHz * = Plane-wave equivalent power density Notes: (1) Occupational/controlled exposure limits apply in situations in which persons are exposed as a consequence of their employment provided those persons are fully aware of the potential for exposure and can exercise control over their exposure. Limits for occupational/controlled exposure also apply in situations when a person is transient through a location where occupational/controlled limits apply provided he or she is made aware of the potential for exposure. (2) General population/uncontrolled exposure limits apply in situations in which the general public may be exposed, or in which persons who are exposed as a consequence of their employment may not be fully aware of the potential for exposure or cannot exercise control over their exposure Page 6 of 14 UL VERIFICATION SERVICES INC. FORM NO: CCSUP4701I 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 319-4000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of . UL Verification Services Inc.

REPORT NO: 12802195-E9V2 DATE: 9/17/2019 FCC ID: C3K1876 5.2. EQUATIONS POWER DENSITY Power density is given by: S = EIRP / (4 * Pi * D^2) Where S = Power density in mW/cm^2 EIRP = Equivalent Isotropic Radiated Power in mW D = Separation distance in cm Power density in units of mW/cm^2 is converted to units of W/m^2 by multiplying by 10. DISTANCE Distance is given by: D = SQRT (EIRP / (4 * Pi * S)) Where D = Separation distance in cm EIRP = Equivalent Isotropic Radiated Power in mW S = Power density in mW/cm^2 SOURCE-BASED DUTY CYCLE Where applicable (for example, multi-slot cell phone applications) a duty cycle factor may be applied. Source-based time-averaged EIRP = (DC / 100) * EIRP Where DC = Duty Cycle in %, as applicable EIRP = Equivalent Isotropic Radiated Power in mW Page 7 of 14 UL VERIFICATION SERVICES INC. FORM NO: CCSUP4701I 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 319-4000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of . UL Verification Services Inc.

REPORT NO: 12802195-E9V2 DATE: 9/17/2019 FCC ID: C3K1876 MIMO AND COLOCATED TRANSMITTERS (IDENTICAL LIMIT FOR ALL TRANSMITTERS) For multiple chain devices, and colocated transmitters operating simultaneously in frequency bands where the limit is identical, the total power density is calculated using the total EIRP obtained by summing the EIRP (in linear units) of each transmitter. Total EIRP = (EIRP1) + (EIRP2) + ... + (EIRPn) where EIRPx = Source-based time-averaged EIRP of chain x or transmitter x The total EIRP is then used to calculate the Power Density or the Distance as applicable. MIMO AND COLOCATED TRANSMITTERS (NON-IDENTICAL LIMIT FOR ALL TRANSMITTERS) For multiple colocated transmitters operating simultaneously in frequency bands where different limits apply: The Power Density at the specified separation distance is calculated for each transmitter chain or transmitter. The fraction of the exposure limit is calculated for each chain or transmitter as (Power Density of chain or transmitter) / (Limit applicable to that chain or transmitter). The fractions are summed. Compliance is established if the sum of the fractions is less than or equal to one. Page 8 of 14 UL VERIFICATION SERVICES INC. FORM NO: CCSUP4701I 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 319-4000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of . UL Verification Services Inc.

REPORT NO: 12802195-E9V2 DATE: 9/17/2019 FCC ID: C3K1876 6. RF EXPOSURE RESULTS In the table(s) below, Power and Gain are entered in units of dBm and dBi respectively and conversions to linear forms are used for the calculations. Single Chain and non-colocated transmitters Band Mode Separ. Output Ant. Duty EIRP FCC PD FCC Distance AVG Gain Cycle PD Limit Power (cm) (dBm) (dBi) (%) (mW) (mW/cm^2) (mW/cm^2) 1900.0 LTE 2 20 24.00 1.60 100.0 363.08 0.07 1.00 1700.0 LTE 4 20 25.00 1.60 100.0 457.09 0.09 1.00 850.0 LTE 5 20 25.00 -0.80 100.0 263.03 0.05 0.55 2500.0 LTE 7 20 25.00 0.10 100.0 323.59 0.06 1.00 600.0 LTE 12 20 25.00 -1.10 100.0 245.47 0.05 0.47 700.0 LTE 13 20 25.00 -1.00 100.0 251.19 0.05 0.52 700.0 LTE 14 20 25.00 -0.90 100.0 257.04 0.05 0.53 1900.0 LTE 25 20 24.00 1.60 100.0 363.08 0.07 1.00 850.0 LTE 26 20 25.00 -0.60 100.0 275.42 0.05 0.54 2300.0 LTE 30 20 23.70 0.20 100.0 245.47 0.05 1.00 2600.0 LTE 41 20 25.00 0.10 63.3 204.83 0.04 1.00 1700.0 LTE 66 20 25.00 1.60 100.0 457.09 0.09 1.00 1900.0 WCDMA 2 20 24.00 1.60 100.0 363.08 0.07 1.00 850.0 WCDMA 5 20 25.00 -0.80 100.0 263.03 0.05 0.55 2.4 GHz BLE 20 6.00 0.60 82.4 3.77 0.00 1.00 2.4 GHz Bluetooth 20 6.00 0.60 77.1 3.52 0.00 1.00 2.4 GHz WLAN 20 19.50 1.20 99.1 116.43 0.02 1.00 5 GHz WLAN 20 19.50 2.40 98.0 151.78 0.03 1.00 Page 9 of 14 UL VERIFICATION SERVICES INC. FORM NO: CCSUP4701I 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 319-4000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of . UL Verification Services Inc.

REPORT NO: 12802195-E9V2 DATE: 9/17/2019 FCC ID: C3K1876 Single Chain and non-colocated transmitters Band Mode FCC Output Antenna EIRP Duty EIRP Separ. Limit AVG Gain Cycle Distance Power FCC (mW/cm^2) (dBm) (dBi) (dBm) (%) (mW) (cm) 1900.0 LTE 2 1.00 24.00 1.60 25.60 100.0 363.08 5.38 1700.0 LTE 4 1.00 25.00 1.60 26.60 100.0 457.09 6.03 850.0 LTE 5 0.55 25.00 -0.80 24.20 100.0 263.03 6.17 2500.0 LTE 7 1.00 25.00 0.10 25.10 100.0 323.59 5.08 600.0 LTE 12 0.47 25.00 -1.10 23.90 100.0 245.47 6.47 700.0 LTE 13 0.52 25.00 -1.00 24.00 100.0 251.19 6.20 700.0 LTE 14 0.53 25.00 -0.90 24.10 100.0 257.04 6.23 1900.0 LTE 25 1.00 24.00 1.60 25.60 100.0 363.08 5.38 850.0 LTE 26 0.54 25.00 -0.60 24.40 100.0 275.42 6.35 2300.0 LTE 30 1.00 23.70 0.20 23.90 100.0 245.47 4.42 2600.0 LTE 41 1.00 25.00 0.10 25.10 63.3 204.83 4.04 1700.0 LTE 66 1.00 25.00 1.60 26.60 100.0 457.09 6.03 1900.0 WCDMA 2 1.00 24.00 1.60 25.60 100.0 363.08 5.38 850.0 WCDMA 5 0.55 25.00 -0.80 24.20 100.0 263.03 6.17 2.4 GHz BLE 1.00 6.00 0.60 6.60 82.4 3.77 0.55 2.4 GHz Bluetooth 1.00 6.00 0.60 6.60 77.1 3.52 0.53 2.4 GHz WLAN 1.00 19.50 1.20 20.70 99.1 116.43 3.04 5 GHz WLAN 1.00 19.50 2.40 21.90 98.0 151.78 3.48 Page 10 of 14 UL VERIFICATION SERVICES INC. FORM NO: CCSUP4701I 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 319-4000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of . UL Verification Services Inc.

REPORT NO: 12802195-E9V2 DATE: 9/17/2019 FCC ID: C3K1876 Multiple chain or colocated transmitters Band Mode Chain Separ. Output Ant. Duty EIRP FCC PD FCC PD for Dist. AVG Gain Cycle Limit Power MIMO (cm) (dBm) (dBi) (%) (mW) (mW/cm^2) (mW/cm^2) 2.4 GHz BLE N/A 6.00 0.60 82.4 3.77 2.4 GHz BT N/A 6.00 0.60 77.1 3.52 2.4 GHz WLAN 1 19.50 0.60 99.1 101.42 2.4 GHz WLAN 2 19.50 1.20 99.1 116.44 Combined 20 225.15 0.04 1.00 Multiple chain or colocated transmitters Band Mode Chain FCC Output Ant. Duty EIRP Separ. for Limit AVG Gain Cycle Distance Power FCC MIMO (mW/cm^2) (dBm) (dBi) (%) (mW) (cm) 2.4 GHz BLE N/A 6.00 0.60 82.4 3.8 2.4 GHz BT N/A 6.00 0.60 77.1 3.5 2.4 GHz WLAN 1 19.50 0.60 99.1 101.4 2.4 GHz WLAN 2 19.50 1.20 99.1 116.4 Combined 1.00 225.2 4.23 \ Page 11 of 14 UL VERIFICATION SERVICES INC. FORM NO: CCSUP4701I 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 319-4000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of . UL Verification Services Inc.

REPORT NO: 12802195-E9V2 DATE: 9/17/2019 FCC ID: C3K1876 Multiple chain or colocated transmitters Band Mode Chain Separ. Output Ant. Duty EIRP FCC PD FCC PD for Dist. AVG Gain Cycle Limit Power MIMO (cm) (dBm) (dBi) (%) (mW) (mW/cm^2) (mW/cm^2) 2.4 GHz BLE N/A 6.00 0.60 82.4 3.77 2.4 GHz BT N/A 6.00 0.60 77.1 3.52 5 GHz WLAN 1 19.50 2.40 98.0 151.78 5 GHz WLAN 2 19.50 2.00 98.0 138.38 Combined 20 297.45 0.06 1.00 Multiple chain or colocated transmitters Band Mode Chain FCC Output Ant. Duty EIRP Separ. for Limit AVG Gain Cycle Distance Power FCC MIMO (mW/cm^2) (dBm) (dBi) (%) (mW) (cm) 2.4 GHz BLE N/A 6.00 0.60 82.4 3.8 2.4 GHz BT N/A 6.00 0.60 77.1 3.5 5 GHz WLAN 1 19.50 2.40 98.0 151.8 5 GHz WLAN 2 19.50 2.00 98.0 138.4 Combined 1.00 297.5 4.87 Page 12 of 14 UL VERIFICATION SERVICES INC. FORM NO: CCSUP4701I 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 319-4000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of . UL Verification Services Inc.

REPORT NO: 12802195-E9V2 DATE: 9/17/2019 FCC ID: C3K1876 Multiple chain or colocated transmitters Band (GHz) 0.7 2.4 2.4 Mode LTE WLAN WLAN Transmitter Cell Chain 1 Chain 2 Separation (cm) 20 20 20 Distance Output Power (dBm) 25.0 19.5 19.5 Antenna Gain (dBi) 1.6 0.6 1.2 Duty Cycle (%) 100 99.1 99.1 Source Based (mW) 457.1 101.4 116.4 EIRP FCC Power (mW/cm^2) 0.09 0.02 0.02 Density FCC Power (mW/cm^2) Density Limit 0.52 1 1 Fraction of Limit (%) 17.5 2.0 2.3 Sum of 21.8 Fractions (%) Multiple chain or colocated transmitters Band (GHz) 0.7 5 5 Mode LTE WLAN WLAN Transmitter Cell Chain 1 Chain 2 Separation (cm) 20 20 20 Distance Output Power (dBm) 25.0 19.5 19.5 Antenna Gain (dBi) 1.6 2.4 2.0 Duty Cycle (%) 100 100 100 Source Based (mW) 457.1 154.9 141.3 EIRP FCC Power (mW/cm^2) 0.09 0.03 0.03 Density FCC Power (mW/cm^2) Density Limit 0.52 1 1 Fraction of Limit (%) 17.5 3.1 2.8 Sum of 23.4 Fractions (%) Page 13 of 14 UL VERIFICATION SERVICES INC. FORM NO: CCSUP4701I 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 319-4000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of . UL Verification Services Inc.

REPORT NO: 12802195-E9V2 DATE: 9/17/2019 FCC ID: C3K1876 Notes: 1) The output power listed above is the maximum power including tolerance. 2) The antenna gain in the tables above is the maximum antenna gain among various channels within the specified band. 3) Colocated calculation use the worst case LTE( band END OF TEST REPORT Page 14 of 14 UL VERIFICATION SERVICES INC. FORM NO: CCSUP4701I 47173 BENICIA STREET, FREMONT, CA 94538, USA TEL: (510) 319-4000 FAX: (510) 661-0888 This report shall not be reproduced except in full, without the written approval of . UL Verification Services Inc.


Document Created: 2019-10-02 16:25:24
Document Modified: 2019-10-02 16:25:24
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