Test report

FCC ID: C3K1864

Test Report

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FCCID_4458895

RADIO TEST REPORT For MODEL NO.: 1864 FCC ID: C3K1864 IC ID: 3048A-1864 Test Report No. R-TR571-FCCISED-NFC-4 Issue Date: September 23, 2019 FCC CFR47 Part 15 Subpart C Innovation, Science and Economic Development Canada RSS-210 Issue 9 Prepared by Microsoft EMC Laboratory 17760 NE 67th Ct, Redmond WA, 98052, U.S.A. 425-421-8641 dasalina@microsoft.com TESTING CERT #3472.01 Rev 4.0

FCC ID: C3K1864 IC ID: 3048A-1864 1 Record of Revisions Revision Date Section Page(s) Summary of Author/Revised Changes By: 1.0 09/05/2019 All All Version 1.0 Daniel Salinas 5.5 8 Support Equipment List included 6 9 20 dB Bandwidth Requirement included 8.3 13 EUT setup diagram included 2.0 09/17/2019 9.5 23, 26 Worst-case Daniel Salinas orientation clarified 9.5 27 Measurement data updated to 200 MHz 9.4 29, 30 AC Line Conducted Emissions Updated 5, 7, Included notes on 9.3.5.2, 26, 3.0 09/20/2019 charging and worst Daniel Salinas 9.3.5.7, 27, modes 9.4.2 28 Included note on 4.0 09/23/2019 9.3.5 23 Daniel Salinas measurement distance Report#: R-TR571-FCCISED-NFC-4 Issued: Sep 23, 2019 Page 2 of 31 Microsoft EMC Laboratory

FCC ID: C3K1864 IC ID: 3048A-1864 Table of Contents 1 Record of Revisions ............................................................................................................... 2 2 Deviations from Standards .................................................................................................... 6 3 Facilities and Accreditations .................................................................................................. 6 3.1 Test Facility .................................................................................................................... 6 3.2 Accreditations ................................................................................................................. 6 3.3 Test Equipment .............................................................................................................. 6 4 Measurement Uncertainty ...................................................................................................... 6 5 Product Description ............................................................................................................... 7 5.1 Test Configurations ........................................................................................................ 7 5.2 Environmental Conditions ............................................................................................... 7 5.3 Antenna Requirements ................................................................................................... 8 5.4 Equipment Modifications ................................................................................................ 8 5.5 Ancillary Equipment ........................................................................................................ 8 5.6 Dates of Testing ............................................................................................................. 8 6 Test Results Summary .......................................................................................................... 9 7 Test Equipment List ............................................................................................................. 10 8 Test Site Description............................................................................................................ 12 8.1 Radiated Emissions Test Site ....................................................................................... 12 Radiated Measurements in 9kHz- 30 MHz ............................................................ 12 Radiated Measurements in 30 MHz - 1000 MHz .................................................. 12 8.2 Antenna port conducted measurements ....................................................................... 12 8.3 Test Setup Diagrams .................................................................................................... 13 9 Test Results- Conducted ..................................................................................................... 15 9.1 99% Occupied Bandwidth & 20 dB Occupied Bandwidth ............................................. 15 Test Requirement: ................................................................................................. 15 Test Method: ......................................................................................................... 15 Limits: .................................................................................................................... 15 Test Results: ......................................................................................................... 15 Test Data: .............................................................................................................. 16 9.2 Frequency Stability ....................................................................................................... 17 Test Requirement: ................................................................................................. 17 Test Method: ......................................................................................................... 17 Limits: .................................................................................................................... 18 Report#: R-TR571-FCCISED-NFC-4 Issued: Sep 23, 2019 Page 3 of 31 Microsoft EMC Laboratory

FCC ID: C3K1864 IC ID: 3048A-1864 Test Results: ......................................................................................................... 18 9.3 Radiated Spurious and Carrier Mask ........................................................................... 20 Test Requirement: ................................................................................................. 20 Test Method: ......................................................................................................... 20 Limits: .................................................................................................................... 22 Test Result: ........................................................................................................... 22 Test Data: .............................................................................................................. 23 9.4 AC Line Conducted Emissions ..................................................................................... 28 Test Requirements ................................................................................................ 28 Test Method .......................................................................................................... 28 Limit ....................................................................................................................... 28 Test Result: ........................................................................................................... 28 Test Data: .............................................................................................................. 29 Report#: R-TR571-FCCISED-NFC-4 Issued: Sep 23, 2019 Page 4 of 31 Microsoft EMC Laboratory

FCC ID: C3K1864 IC ID: 3048A-1864 Test Report Attestation Microsoft Corporation Model: 1864 FCC ID: C3K1864 IC ID: 3048A-1864 Applicable Standards Specification Test Result FCC 47CFR Rule Parts 15.207, 15.209, 15.225 Pass Innovation, Science and Economic Development Pass Canada RSS-210 Issue 9, RSS-GEN Issue 5 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 is prohibited and requires prior written approval of Microsoft EMC Laboratory. This test report replaces previous report # R-TR571-FCCISED-NFC-3 issued 09/20/2019. Reviewed By: Vishwas Narayan Written/ Issued By: Daniel Salinas RF Test engineer RF Compliance Test Lead Report#: R-TR571-FCCISED-NFC-4 Issued: Sep 23, 2019 Page 5 of 31 Microsoft EMC Laboratory

FCC ID: C3K1864 IC ID: 3048A-1864 2 Deviations from Standards None. 3 Facilities and Accreditations 3.1 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 3.2 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 FCC Registration Number: US1141 IC Site Registration Numbers: 3048A-3, 3048A-4 3.3 Test Equipment The site and related equipment are constructed in conformance with the requirements of ANSI C63.4:2014 and other equivalent applicable standards. Test site requirements for measurements above 1 GHz are in accordance with ANSI C63.4:2014. ANSI C63.10:2013 and the appropriate KDB test methods were followed. 4 Measurement Uncertainty The following measurement uncertainty levels have been estimated for tests performed on the product, as specified in ETSI TR 100 028. This represents an expanded uncertainty expressed at 95% confidence level using a coverage factor k=2. These levels are for reference only and not included to determine product compliance. Expanded uncertainty calculations are available upon request. Test item Uncertainty Unit Radiated disturbance (30 MHz to 1 GHz) 5.99 dB Conducted Disturbance at Mains Port 3.31 dB Uncertainty for Conducted Power test 1.277 dB Uncertainty for Conducted Spurious emission test 2.742 dB Uncertainty for Bandwidth test 4.98 kHz Uncertainty for DC power test 0.05 % Uncertainty for test site temperature 0.5 ºC Uncertainty for test site Humidity 3 % Uncertainty for time 0.189 % Report#: R-TR571-FCCISED-NFC-4 Issued: Sep 23, 2019 Page 6 of 31 Microsoft EMC Laboratory

FCC ID: C3K1864 IC ID: 3048A-1864 5 Product Description Company Name: Microsoft Corporation Address: One Microsoft Way City, State, Zip: Redmond, WA 98052-6399 Customer Contact: Mike Boucher Functional Description Portable Computing, I/O Accessory Device with NFC Charging of the EUT: Capability Model: 1864 FCC ID: C3K1864 IC ID: 3048A-1864 Radio under test: NFC (13.110-14.010 MHz) Modulation(s): ASK/CW Antenna Information: Integral coil Equipment Design State: Prototype/Production Equivalent (DV) Equipment Condition: Good RF Conducted Test Sample 005763792553, 000DVBB420700169 Test Sample Details: RF Radiated Test Sample 000DVBB420300028, 000DVBB420700169 5.1 Test Configurations Test firmware provided by the customer was used to program the EUT to transmit continuously. With this firmware, the device can operate in single tone carrier and ASK modulation modes. Measurements with a companion device acting as a load in charging mode were also performed. Radiated measurements were performed in X orientation as this is the device’s intended orientation. 5.2 Environmental Conditions Ambient air temperature of the test site was within the range of 10 ⁰C to 40 ⁰C (50 ⁰F to 104 ⁰F) unless the EUT specified testing over a different temperature range. Humidity levels were in the range of 10% to 90% relative humidity. Testing conditions were within tolerance, and any deviations required from the EUT are reported. Report#: R-TR571-FCCISED-NFC-4 Issued: Sep 23, 2019 Page 7 of 31 Microsoft EMC Laboratory

FCC ID: C3K1864 IC ID: 3048A-1864 5.3 Antenna Requirements The antenna/coil is permanently attached and there are no provisions for connection to an external antenna. 5.4 Equipment Modifications No modifications were made during testing. 5.5 Support Equipment Manufacturer Model Number Description Serial Number(s) Microsoft 1706 AC/DC Power Adapter 0CI30J0IHW396 000498792456, 000495392456, Microsoft 1853 NFC Tag/Load Device 000557492356 Viewsonic VP2780-4K Monitor U8K153600200 Samsung T5 Gen 2 SSD S3UKNV0K500312E 5.6 Dates of Testing Testing was performed from August 9th to September 4th, 2019 and September 13th to September 17th, 2019. Report#: R-TR571-FCCISED-NFC-4 Issued: Sep 23, 2019 Page 8 of 31 Microsoft EMC Laboratory

FCC ID: C3K1864 IC ID: 3048A-1864 6 Test Results Summary FCC CFR 47/ Limit Test Test Description Result ISED Rule Part 20 dB Bandwidth & FCC 15.215 (c) The Bandwidth N/A Occupied Bandwidth RSS-Gen [6.7] must remain within the operating band Frequency Stability FCC 15.225 (e) within ±0.01% Pass RSS-210 [B.6] Carrier Mask FCC 15.225 (a)(b)(c) FCC CFR 47 Pass RSS-210 [B.6] 15.225 Limits RSS-210 [B.6] Radiated Spurious Emissions 15.205, 15.209 FCC CFR 47 RSS-210 [B.6] 15.209 limits Pass RSS-Gen [8.9] RSS-Gen [8.9] Report#: R-TR571-FCCISED-NFC-4 Issued: Sep 23, 2019 Page 9 of 31 Microsoft EMC Laboratory

FCC ID: C3K1864 IC ID: 3048A-1864 7 Test Equipment List Equipment used for Radiated and Conducted Measurements Calibration Manufacturer Description Model # Asset # Due Rohde & Signal Analyzer FSV40 RF-580 4/9/2020 Schwarz Rohde & EMI Test ESU40 RF-229 4/10/2020 Schwarz Receiver Rohde & EMI Test ESU40 RF-248 4/11/2020 Schwarz Receiver Rohde & EMI Test ESU40 RF-192 4/10/2020 Schwarz Receiver ETS-Lindgren Antenna - 6512 RF-202 1/31/2020 Passive Loop Sunol Sciences Antenna - JB6 EMC-017 1/3/2020 Broadband Sunol Sciences Antenna - JB1 EMC-1174 8/17/2019* Broadband PCE Climate Meter PCE-THB 40 EMC-1207 9/28/2019 Madge Tech THP Monitor TCTemp2000 RF-168 10/9/2019 Fluke Multimeter 87V EMC-666 10/3/2019 Langer Near Field RF-2 EMC-692 N/A Probe Set Agilent DC Power E3632A EMC-1152 N/A Supply Test Equity Temperature 1007S EMC-591 N/A Chamber Rohde & Open Switch OSP130 RF-249 N/A Schwarz and Control Unit Rohde & Open Switch OSP150 RF-250 N/A Schwarz and Control Unit Teledyne RF Cable 57500 EMC-1025 N/A Huber and Cable- SucoFlex 0 RF-599 N/A Suhner 106A Micro-Coax RF Cable UTI Flex RF-354 N/A Huber-Suhner Cable SF126E/11SMA/11N/2M EMC-1277 N/A Report#: R-TR571-FCCISED-NFC-4 Issued: Sep 23, 2019 Page 10 of 31 Microsoft EMC Laboratory

FCC ID: C3K1864 IC ID: 3048A-1864 Equipment used for AC Line Conducted Emissions Measurement Manufacturer Description Model # Asset # Calibration Due Rohde & EMI Test ESR3 EMC-911 4/11/2020 Schwarz Receiver Teseq LISN NNB 51 EMC-056 7/23/2020 Emco LISN 3810/2 EMC-281 5/31/2020 Fluke Multimeter 87V EMC-052 5/3/2020 Madge Tech THP Monitor PRHTemp2000 EMC-681 10/31/2019 Micro-Coax RF Cable UFB311A-0- EMC-877 N/A 0787-500500 Chroma AC Power 61609 EMC-598 N/A Source ETS-Lindgren TILE- Software -- EMC-1105 N/A License/USB Note: Items with Calibration Due date marked as N/A are characterized before use, where applicable. Note*: All equipment used was within calibration during applicable measurements Report#: R-TR571-FCCISED-NFC-4 Issued: Sep 23, 2019 Page 11 of 31 Microsoft EMC Laboratory

FCC ID: C3K1864 IC ID: 3048A-1864 8 Test Site Description 8.1 Radiated Emissions Test Site Radiated measurements are performed in a 3m semi-anechoic chamber, which meets NSA requirements for the frequency range of 30MHz to 1000MHz in accordance with ANSI C63.4:2017. Measurements below 30 MHz were performed on a site demonstrating equivalence to an open field site per KDB 414788 D01. Radiated Measurements in 9kHz- 30 MHz The EUT is positioned on a turntable at a height of 80cm using a non-conducting table. A loop antenna is positioned at 3m from the EUT periphery at 1m height from the ground. The turntable is rotated 360 degrees to determine the highest emissions. This is repeated for three orientations of the measurement antenna- parallel, perpendicular and ground-parallel. All possible orientations of the EUT were investigated for emissions and the flat, or ‘X’, orientation was identified as the only applicable configuration. Radiated Measurements in 30 MHz - 1000 MHz The EUT is positioned on a turntable at a height of 80cm using a non-conducting table. A linearly polarized broadband antenna is positioned at 3m from the EUT periphery. The turntable is rotated 360 degrees, and the antenna height varied from 1m to 4m to determine the highest emissions. This is repeated for both horizontal and vertical polarizations of the measurement antenna. All possible orientations of the EUT were investigated for emissions and the flat, or ‘X’, orientation was identified as the only applicable configuration. 8.2 Antenna port conducted measurements All antenna port conducted measurements were performed on a bench-top setup consisting of a spectrum analyzer, attenuators, and pre-characterized RF cables. Only relative measurements were taken with this setup. Report#: R-TR571-FCCISED-NFC-4 Issued: Sep 23, 2019 Page 12 of 31 Microsoft EMC Laboratory

FCC ID: C3K1864 IC ID: 3048A-1864 8.3 Test Setup Diagrams Figure 8-1 EUT Setup Block Diagram Figure 8-2 Test Setup for Antenna Port Coupled Measurements Figure 8-3 AC Line Conducted Emissions Report#: R-TR571-FCCISED-NFC-4 Issued: Sep 23, 2019 Page 13 of 31 Microsoft EMC Laboratory

FCC ID: C3K1864 IC ID: 3048A-1864 Base of Loop at 1m Figure 8-4 Test Setup for Radiated measurements in 9kHz - 30MHz Range Figure 8-5 Test Setup for Radiated measurements in 30MHz- 1GHz Range Report#: R-TR571-FCCISED-NFC-4 Issued: Sep 23, 2019 Page 14 of 31 Microsoft EMC Laboratory

FCC ID: C3K1864 IC ID: 3048A-1864 9 Test Results- Conducted 9.1 99% Occupied Bandwidth & 20 dB Occupied Bandwidth Test Requirement: FCC CFR 47 Rule Part 15.215 (c) ISED RSS-Gen [6.6] The 20 dB Occupied Bandwidth must remain within the operating frequency band. The 99% Occupied Channel Bandwidth is the bandwidth that contains 99% of the power of the signal. This test is performed for reporting and measurement purposes only. Test Method: Measurements are performed according to ANSI C63.10: 2013 section 6.9. 99% Occupied Bandwidth Spectrum Analyzer settings: Set analyzer center frequency to the nominal EUT channel frequency Span is set to between 2 and 5 times the OBW bandwidth RBW: 1% to 5% of the OBW or 20 dB BW= 30 kHz/10kHz VBW ≥ 3 RBW= 100 kHz/100 kHz Detector = Peak Sweep time = Auto Couple Trace mode = max hold Use the 99% power bandwidth function of the instrument or set the markers 20 dB below the carrier and measure the difference in frequency. Limits: For reporting purpose only. Test Results: Test 20 dB Result Frequency 99% Bandwidth Mode Bandwidth (MHz) (kHz) (kHz) 13.56 ASK 790.16 464.80 Pass Report#: R-TR571-FCCISED-NFC-4 Issued: Sep 23, 2019 Page 15 of 31 Microsoft EMC Laboratory

FCC ID: C3K1864 IC ID: 3048A-1864 Test Data: Figure 9-1 99% Occupied Bandwidth Figure 9-2. 20 dB Bandwidth Report#: R-TR571-FCCISED-NFC-4 Issued: Sep 23, 2019 Page 16 of 31 Microsoft EMC Laboratory

FCC ID: C3K1864 IC ID: 3048A-1864 9.2 Frequency Stability Test Requirement: FCC CFR 47 Rule Part 15.225 (e) ISED RSS-210 [B.6] Test Method: Measurements were performed according to the procedure defined in ANSI C63.10: 2013 Section 6.8. Spectrum Analyzer settings: RBW= 100 Hz VBW = 300 Hz Span = 10 kHz Detector = Peak Sweep Points = 32001 Sweep Time = Auto Sweep Mode = Continuous First capture the reference frequency at nominal voltage (from EUT spec) and nominal temperature (20°C). o After power on, use trace 1 on the spectrum analyzer. Select view to freeze the plot. o Use marker → peak search to establish the reference frequency. Marker 1 will now be the reference frequency. o Record the reference frequency M1(1) Once the reference frequency has been established, use trace 2 to compare the frequency shift during the rest of the voltage and temperature values as defined in ANSI C63.10 section 6.8. o Select Trace → 2, Clear write o Select Marker → 2, Delta o Select Marker to Trace → 2 o Select Trace → Max hold (ensure trace 2 is selected) o Select Marker → Peak Search o Record the frequency shift D2[2] Repeat step 2 for the remaining voltage and temperature values as defined in ANSI C63.10 section 6.8. o Select Trace → 2, Clear write o Select Trace → Max hold (ensure trace 2 is selected) o Select Marker → Peak Search o Record the frequency shift D2[2] Report#: R-TR571-FCCISED-NFC-4 Issued: Sep 23, 2019 Page 17 of 31 Microsoft EMC Laboratory

FCC ID: C3K1864 IC ID: 3048A-1864 Sample Plot: Figure 9-3. Frequency Stability (13.56 MHz) Limits: 15.225 (e): The frequency tolerance of the carrier signal shall be maintained within ±0.01% of the operating frequency over a temperature variation of −20 degrees to + 50 degrees C at normal supply voltage, and for a variation in the primary supply voltage from 85% to 115% of the rated supply voltage at a temperature of 20 degrees C. RSS-210 [B.6]: Carrier frequency stability shall be maintained to ±0.01% (±100 ppm). Test Results: 1.) Results with varying temperature Power Supply (Vac)= 7.55 Frequency Temperature Startup Frequency Delta 2 mins Delta Shift (Hz) at (⁰c) (MHz) Shift (Hz) (ppm) (MHz) (ppm) 2 mins 50.00 13.5602494 -58.80 4.334 0.00 13.5603081 0.00 40.00 13.5602690 -39.10 2.882 0.00 13.5603081 0.00 30.00 13.5602887 -19.40 1.430 0.00 13.5603081 0.00 20.00 13.5603081 0.00 0.000 0.00 13.5603081 0.00 10.00 13.5602790 -29.10 2.144 0.00 13.5603081 0.00 0.00 13.5602690 -39.10 2.882 0.00 13.5603081 0.00 -10.00 13.5602787 -29.40 2.167 0.00 13.5603081 0.00 -20.00 13.5603081 0.00 0.001 -9.69 13.5602984 0.71 Report#: R-TR571-FCCISED-NFC-4 Issued: Sep 23, 2019 Page 18 of 31 Microsoft EMC Laboratory

FCC ID: C3K1864 IC ID: 3048A-1864 Frequency Frequency 5 mins Delta 10 mins Delta Limit Shift (Hz) Shift (Hz) Result (MHz) (ppm) (MHz) (ppm) (ppm) at 5 mins at 10mins 0.00 13.5603081 0.00 0.00 13.5603081 0.00 ±100 Pass 0.00 13.5603081 0.00 0.00 13.5603081 0.00 ±100 Pass 0.00 13.5603081 0.00 0.00 13.5603081 0.00 ±100 Pass 0.00 13.5603081 0.00 0.00 13.5603081 0.00 ±100 Pass 0.00 13.5603081 0.00 -0.27 13.5603079 0.02 ±100 Pass 0.00 13.5603081 0.00 0.00 13.5603081 0.00 ±100 Pass 0.00 13.5603081 0.00 0.00 13.5603081 0.00 ±100 Pass 0.00 13.5603081 0.00 0.00 13.5603081 0.00 ±100 Pass 2.) Results with varying Supply voltage Ambient temperature: 20 °C Frequency Frequency Power Supply Startup Delta 2 mins Delta Shift Shift (Hz) at (VDC) (MHz) (ppm) (MHz) (ppm) (Hz) 2mins 8.68 13.5603081 0.00 0.00 0.00 13.5603081 0.00 6.42 13.5603081 0.00 0.00 0.00 13.5603081 0.00 Frequency Frequency 5 mins Delta 10 mins Delta Limit Shift (Hz) Shift (Hz) at Result (MHz) (ppm) (MHz) (ppm) (ppm) at 5mins 10mins 0.00 13.5603081 0.00 0.00 13.5603081 0.00 ±100 Pass 0.00 13.5603081 0.00 0.00 13.5603081 0.00 ±100 Pass Report#: R-TR571-FCCISED-NFC-4 Issued: Sep 23, 2019 Page 19 of 31 Microsoft EMC Laboratory

FCC ID: C3K1864 IC ID: 3048A-1864 9.3 Radiated Spurious and Carrier Mask Test Requirement: FCC CFR 47 Rule Part 15.225 (a)(b)(c)(d) and 15.209 ISED RSS-210 [B.6] and RSS GEN [8.9] Test Method: Radiated spurious measurements were made from 9kHz to the 10th harmonic of the transmit fundamental frequency following ANSI C63.10:2013 procedures. The limit for radiated spurious emissions is per 15.209 and RSS-Gen [5.5]. Emissions observed in the restricted bands listed in 15.205 and RSS-Gen were tested for compliance per limits in 15.209 and RSS-Gen. Limits for Carrier Mask are as defined in 15.225. Guidelines in ANSI C63.10:2013 were followed with respect to maximizing the emissions. Carrier Mask Measurements were performed at 1m measurement distance to improve SNR. A pre-amp was required to provide the measuring system with sufficient sensitivity. The peak field strength of the emission is corrected by the antenna factor, cable loss, pre-amp etc. Parallel, perpendicular, and ground parallel loop orientations were investigated. Due to the applicable EUT configuration only parallel and perpendicular loop orientations were tested. Worst-case maximized data for all loop orientations is shown in this test report. Radiated Spurious Emissions Spectrum Analyzer Settings: 9 kHz – 150 kHz RBW= 1 kHz VBW= 3 kHz Trace Mode: Peak Detector (Max Hold) Span= 1 - 150 kHz Sweep time= Auto Sweep points ≥ 2 x Span/RBW 150 kHz – 30 MHz RBW= 10 kHz VBW= 30 kHz Trace Mode: Peak Detector (Max Hold) Span= 150 kHz – 30 MHz Sweep time= Auto Sweep points ≥ 2 x Span/RBW 30 MHz - 1 GHz: RBW = 120 kHz VBW ≥ 3 X RBW Trace Mode: Peak Detector (Max Hold). Final measurements performed using QP Detector. Span= 30 MHz - 1 GHz Sweep time= Auto Sweep points ≥ 2 x Span/RBW Report#: R-TR571-FCCISED-NFC-4 Issued: Sep 23, 2019 Page 20 of 31 Microsoft EMC Laboratory

FCC ID: C3K1864 IC ID: 3048A-1864 Final Peak Measurements RBW = 10 kHz VBW ≥ 30 kHz Detector = Peak IF filter = 6dB Sweep time = auto Trace mode = max hold. Allow sweeps to continue until the trace stabilizes Final Quasi-Peak Measurements RBW = 200 Hz; 9 kHz IF filter = 6dB Detector = Quasi-Peak Measurement Time = 15s Final Average Measurements (9 kHz – 90 kHz, 110 kHz – 490 kHz) RBW = 1 kHz VBW ≥ 3 kHz Detector = Average IF filter = 6dB Measurement time = 0.1 to 1s Trace mode = max hold. Allow sweeps to continue until the trace stabilizes Sample Calculation: Field Strength Level: Amplitude (Analyzer level) + AFCL (Antenna Factor and Cable losses) – Amplifier Gain = 50dBuV + 33 dB – 25 dB = 58dBuV/m Report#: R-TR571-FCCISED-NFC-4 Issued: Sep 23, 2019 Page 21 of 31 Microsoft EMC Laboratory

FCC ID: C3K1864 IC ID: 3048A-1864 Limits: Frequency Field Strength (μV/m) Measurement Field Strength Limit (MHz) Distance (meters) (dBμV/m) 13.110 -13.410 106 30 40.51 13.410-13.533 334 30 50.47 13.553-13.567 15,848 30 84 13.567-13.710 334 30 50.47 13.710-14.010 106 30 40.51 Frequency Field Strength Measurement Distance Field Strength Limit (MHz) (μV/m) (meters) (dBμV/m) 0.009-0.490 2400/F (kHz) 300 48.5 - 13.8 0.490-1.705 24000/F (kHz) 30 33.8- 23.0 1.705-30 30 30 29.5 30-88 100 3 40 88-216 150 3 43.5 216-960 200 3 46 960-1000 500 3 54 Above 1000 54 (Average) (Restricted 500 3 Frequency 74 (Peak) Bands) Test Result: Pass. Report#: R-TR571-FCCISED-NFC-4 Issued: Sep 23, 2019 Page 22 of 31 Microsoft EMC Laboratory

FCC ID: C3K1864 IC ID: 3048A-1864 Test Data: 9.3.5.1 Carrier Mask Emission The worst-case mode was observed to be with the EUT in flat ‘X’ orientation without the passive tag support device. The worst-case measurement antenna orientation was parallel loop orientation. Carrier Mask Corrected Carrier Raw Peak Correction Peak Limit Margin Frequency Configuration Amplitude Factor Field (dBµV/m) (dB) (MHz) (dBµV/m) (dB) Strength (dBµV/m) 13.56 ASK w/ Tag -8.52 -5.00 -13.52 84 -97.52 13.56 ASK w/o Tag -1.16 -5.00 -6.16 84 -90.16 13.56 CW w/ Tag -9.19 -5.00 -14.19 84 -98.19 13.56 CW w/o Tag 0.1 -5.00 -4.90 84 -88.90 Note: Measurements were performed at 1m and extrapolated to 30m using a 40 dB/decade extrapolation formula. Report#: R-TR571-FCCISED-NFC-4 Issued: Sep 23, 2019 Page 23 of 31 Microsoft EMC Laboratory

FCC ID: C3K1864 IC ID: 3048A-1864 90 80 60 FCC 15.225 40 Level in dBµV/m 20 13.560000 MHz -13.523 dBµV/m 0 -20 -40 13.11 13.2 13.3 13.4 13.5 13.6 13.7 13.8 13.9 14.01 Frequency in MHz PK+_MAXH [Result Table.Result:2] PK+_CLRWR [Result Table.Result:1] FCC 15.225 [..\] Figure 9-4 Carrier Mask ASK Modulation w/ Passive Tag Load (13.56 MHz) 90 80 60 FCC 15.225 40 Level in dBµV/m 20 13.560000 MHz -6.158 dBµV/m 0 -20 -40 13.11 13.2 13.3 13.4 13.5 13.6 13.7 13.8 13.9 14.01 Frequency in MHz PK+_MAXH [Result Table.Result:2] PK+_CLRWR [Result Table.Result:1] FCC 15.225 [..\] Figure 9-5 Carrier Mask ASK Modulation w/o Passive Tag Load (13.56 MHz) Report#: R-TR571-FCCISED-NFC-4 Issued: Sep 23, 2019 Page 24 of 31 Microsoft EMC Laboratory

FCC ID: C3K1864 IC ID: 3048A-1864 90 80 60 FCC 15.225 40 Level in dBµV/m 20 0 13.560000 MHz -14.194 dBµV/m -20 -40 13.11 13.2 13.3 13.4 13.5 13.6 13.7 13.8 13.9 14.01 Frequency in MHz PK+_MAXH [Result Table.Result:2] PK+_CLRWR [Result Table.Result:1] FCC 15.225 [..\] Figure 9-6 Carrier Mask CW Mode w/ Passive Tag Load (13.56 MHz) 90 80 60 FCC 15.225 40 Level in dBµV/m 20 13.560000 MHz -4.900 dBµV/m 0 -20 -40 13.11 13.2 13.3 13.4 13.5 13.6 13.7 13.8 13.9 14.01 Frequency in MHz PK+_MAXH [Result Table.Result:2] PK+_CLRWR [Result Table.Result:1] FCC 15.225 [..\] Figure 9-7 Carrier Mask CW Mode w/o Passive Tag Load (13.56 MHz) Report#: R-TR571-FCCISED-NFC-4 Issued: Sep 23, 2019 Page 25 of 31 Microsoft EMC Laboratory

FCC ID: C3K1864 IC ID: 3048A-1864 9.3.5.2 Emissions in 9 kHz – 30 MHz All modes, with and without passive tag load were tested and worst-case results are reported The worst-case mode was observed to be with the EUT in flat ‘X’ orientation without the passive tag support device in CW mode. The worst-case measurement antenna orientation was parallel loop orientation. RSE 9 kHz – 30 MHz Corrected Raw Quasi- Quasi- Quasi- Carrier Emission Correction Quasi- Peak Peak Peak Frequency Frequency Factor Peak Limit Amplitude Field Margin (MHz) (MHz) (dB) (dBµV/m) (dBµV/m) Strength (dB) (dBµV/m) 13.56 16.23 -9.64 -5.10 -14.74 29.54 -44.28 13.56 23.13 -7.51 -5.20 -12.71 29.54 -42.25 13.56 26.60 -5.94 -5.40 -11.34 29.54 -40.88 13.56 28.68 -3.86 -6.10 -9.96 29.54 -39.50 50 40 494.918 kHz 30 14.474 dBµV/m 20 Level in dBµV/m 10 0 -10 -20 -30 9k 20 30 50 100k 200 300 500 1M 2M 3M 5M 10M 20 30M Frequency in Hz Preview Result 1-PK+ [Preview Result 1.Result:2] FCC 15.209_inv [..\] FCC 15.209 [..\] Final_Result PK+ [Final_Result.Result:4] Final_Result QPK [Final_Result.Result:5] Figure 9-8 Radiated Spurious Emissions 9 kHz – 30 MHz – w/ Passive Tag Load Report#: R-TR571-FCCISED-NFC-4 Issued: Sep 23, 2019 Page 26 of 31 Microsoft EMC Laboratory

FCC ID: C3K1864 IC ID: 3048A-1864 9.3.5.3 Emissions in 30 MHz- 1 GHz range All modes were tested, and worst-case results are reported. EUT was setup in ‘X’ or flat orientation without the passive tag/charging device in CW mode. RSE 30-1000 MHz Corrected Raw Quasi- Quasi- Quasi- Carrier Emission Correction Quasi- Peak Peak Peak Frequency Frequency Factor Peak Limit Amplitude Field Margin (MHz) (MHz) (dB) (dBµV/m) (dBµV/m) Strength (dB) (dBµV/m) 13.56 33.79 5.12 24.8 29.92 40 -10.08 13.56 40.66 4.71 19.8 24.51 40 -15.49 13.56 54.25 9.22 14.0 23.22 40 -16.78 13.56 67.82 4.34 14.7 19.04 40 -20.96 13.56 97.147 -0.40 16.4 16.00 43.52 -27.52 13.56 155.30 2.80 19.8 22.60 43.52 -20.92 105 100 90 80 70 Level in dBµV/m 60 50 40 30 20 10 0 30M 50 60 70 80 90 100M 200M Frequency in Hz Preview Result 2-RMS Preview Result 1-PK+ FCC 15.209_inv FCC 15.209 Final_Result PK+ Final_Result QPK Figure 9-9 Radiated Spurious Emissions w/ Passive Tag Load (13.56 MHz) Report#: R-TR571-FCCISED-NFC-4 Issued: Sep 23, 2019 Page 27 of 31 Microsoft EMC Laboratory

FCC ID: C3K1864 IC ID: 3048A-1864 9.4 AC Line Conducted Emissions Test Requirements FCC CFR 47 Rule Part 15.207 (a) ISED RSS Gen [8.8] Test Method Conducted power line measurements are made, unless otherwise specified, over the frequency range from 150 kHz to 30 MHz to determine the Unsymmetric radio-noise voltage that is conducted from the EUT power-input terminals that are directly (or indirectly via separate transformer or power supplies) connected to a public power network. Equipment is tested with the power cords that are used under normal operating conditions. These measurements are made using a LISN (Line Impedance Stabilization Network). AC powered peripherals are attached to a second LISN with the 50-ohm measuring port terminated by a 50-ohm resistive load. Worst case results were recorded when the EUT was transmitting continuously with a passive tag load in charging mode for this test. EMI Receiver Settings: 150 kHz – 30 MHz: RBW= 9 kHz VBW ≥ 3 X RBW Trace Mode: Peak Detector (Max Hold). Final measurements were performed using Quasi-Peak and Average Detectors. Span= 150 kHz – 30 MHz Sweep time= Auto Limit Conducted limit (dBμV) Frequency of emission (MHz) Quasi-peak Average 0.15-0.5 66 to 56* 56 to 46* 0.5-5 56 46 5-30 60 50 Test Result: Pass Report#: R-TR571-FCCISED-NFC-4 Issued: Sep 23, 2019 Page 28 of 31 Microsoft EMC Laboratory

FCC ID: C3K1864 IC ID: 3048A-1864 Test Data: Line AVG QP AVG QP AVG QP Frequency Tested Amplitude Amplitude Limit Limit Margin Margin (MHz) (L or N) (dBµV) (dBµV) (dBµV) (dBµV) (dB) (dB) 0.156 L 30.17 52.02 55.70 65.70 -25.52 -13.68 0.227 L 23.19 44.38 52.57 62.57 -29.38 -18.19 2.445 L 13.30 17.49 46.00 56.00 -32.70 -38.51 2.75 L 12.23 18.00 46.00 56.00 -33.77 -38.00 2.814 L 15.21 23.19 46.00 56.00 -30.79 -32.81 27.12 L 39.33 39.32 50.00 60.00 -10.67 -20.68 0.154 N 30.15 52.67 55.80 65.80 -25.65 -13.13 0.159 N 30.22 51.44 55.50 65.50 -25.28 -14.05 0.174 N 28.62 49.78 54.75 64.75 -26.13 -14.97 0.611 N 28.98 31.30 46.00 56.00 -17.02 -24.70 2.943 N 15.63 27.27 46.00 56.00 -30.37 -28.73 27.12 N 39.55 39.51 50.00 60.00 -10.46 -20.50 Report#: R-TR571-FCCISED-NFC-4 Issued: Sep 23, 2019 Page 29 of 31 Microsoft EMC Laboratory

FCC ID: C3K1864 IC ID: 3048A-1864 Microsoft EMC Laboratory Peak Measurement Building 87 QP Final Measurement Conducted Emissions Measurements - Line AVG Final Measurement 70.0 60.0 FCC 15B Class B QP Limit 50.0 FCC 15B Class B AVG Limit Amplitude (dBuV) 40.0 30.0 20.0 10.0 0 150.0K 1.0M 10.0M 30.0M Frequency (Hz) Operator: Eric Greenwood Last Data Update 10:45:20 AM, Friday, September 13, 2019 CE Profile V2.2 Figure 9-10 AC Line Conducted Emissions - Line (150 kHz - 30 MHz) Microsoft EMC Laboratory Peak Measurement Building 87 QP Final Measurement Conducted Emissions Measurements - Neutral AVG Final Measurement 70.0 60.0 FCC 15B Class B QP Limit 50.0 FCC 15B Class B AVG Limit Am plitude (dBuV) 40.0 30.0 20.0 10.0 0 150.0K 1.0M 10.0M 30.0M Frequency (Hz) Operator: Eric Greenwood Last Data Update 11:00:24 AM, Friday, September 13, 2019 CE Profile V2.2 Figure 9-11 AC Line Conducted Emissions - Neutral (150 kHz - 30 MHz) Report#: R-TR571-FCCISED-NFC-4 Issued: Sep 23, 2019 Page 30 of 31 Microsoft EMC Laboratory

FCC ID: C3K1864 IC ID: 3048A-1864 End of Report Report#: R-TR571-FCCISED-NFC-4 Issued: Sep 23, 2019 Page 31 of 31 Microsoft EMC Laboratory


Document Created: 2019-10-02 16:35:17
Document Modified: 2019-10-02 16:35:17
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