11

FCC ID: PYARM-1135

RF Exposure Info

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FCCID_2667629

____________________________________________________________________________ SAR Compliance Test Report Test report no.: FCC_RM-1135_04 Date of report: 2015-06-23 Template version: 19.85 Number of pages: 21 Testing laboratory: TCC Microsoft Beijing Client: Microsoft Laboratory Beijing Economic and Beijing Economic and Technological Development Technological Development Area Area No.5 Donghuan Zhonglu No.5 Donghuan Zhonglu Beijing Beijing PRC China 100176 Tel. +86 10 8711 8888 PRC China 100176 Fax. +86 10 8711 4550 Tel. +86 10 8711 8888 Fax. +86 10 8711 4550 Responsible test Zhang Luwen Product contact Hu Dongji engineer: person: Measurements made Yuan Rui, He Ying by: Tested device: RM-1135, HW0240 and HW0242 FCC ID: PYARM-1135 IC: - Supplement reports: FCC_RM-1135_01 and SAR_Photo_RM-1135_05 Testing has been 47CFR §2.1093 carried out in Radiofrequency Radiation Exposure Evaluation: Portable Devices accordance with: FCC published RF exposure KDB procedures RSS-102, Issue 4 Evaluation Procedure for Mobile and Portable Radio Transmitters with Respect to Health Canada’s Safety Code 6 for Exposure of Humans to Radio Frequency Fields IEEE 1528 - 2013 IEEE Recommended Practice for Determining the Peak Spatial-Average Specific Absorption Rate (SAR) in the Human Head from Wireless Communications Devices: Measurement Technique Documentation: The documentation of the testing performed on the tested devices is archived for 15 years at TCC Microsoft. Test results: The tested device complies with the requirements in respect of all parameters subject to the test. The test results and statements relate only to the items tested. The test report shall not be reproduced except in full, without written approval of the laboratory. Date and signatures: Digitally signed by Zhang Luwen For the contents: DN: cn=Zhang Luwen, o=Microsoft, ou=RCL, email=luwen.zhang@microsoft.c om, c=CN Date: 2015.06.23 09:31:03 +08'00' SAR Report Type: RM-1135 FCC_RM-1135_04 Applicant: Microsoft Copyright  2015 TCC Microsoft 1/21

____________________________________________________________________________ CONTENTS 1. SUMMARY OF SAR TEST REPORT ............................................................................................................................... 4 1.1 TEST DETAILS ......................................................................................................................................................................... 4 1.2 MAXIMUM RESULTS .............................................................................................................................................................. 4 1.2.1 Head Configuration .................................................................................................................................................... 4 1.2.2 Body-worn 15 mm Configuration.......................................................................................................................... 4 1.2.3 Summary SAR data ..................................................................................................................................................... 5 1.2.4 Maximum Drift ............................................................................................................................................................. 5 1.2.5 Measurement Uncertainty ........................................................................................................................................ 5 2. DESCRIPTION OF THE DEVICE UNDER TEST .......................................................................................................... 6 2.1 BANDS AND MODES OF THE DUT ...................................................................................................................................... 6 2.2 DUT FEATURES AND TEST REQUIREMENTS ........................................................................................................................ 6 3. CONDUCTED POWERS ...................................................................................................................................................... 7 3.1 GSM ....................................................................................................................................................................................... 7 3.1.1 GSM850 Head, Body-worn 15 mm........................................................................................................................ 7 3.1.2 GSM1900 Head, Body-worn 15 mm ..................................................................................................................... 7 4. DESCRIPTION OF THE TEST EQUIPMENT ................................................................................................................ 8 4.1 MEASUREMENT SYSTEM AND COMPONENTS .................................................................................................................... 8 4.1.1 Isotropic E-field Probe Type EX3DV4 .................................................................................................................... 9 4.2 PHANTOMS ......................................................................................................................................................................... 10 4.3 TISSUE SIMULANTS ............................................................................................................................................................. 10 4.3.1 Tissue Simulant Recipes ......................................................................................................................................... 10 4.4 SYSTEM VALIDATION AND SYSTEM CHECKING ................................................................................................................ 11 4.4.1 System validation status ........................................................................................................................................ 11 4.4.2 System checking ........................................................................................................................................................ 11 4.5 TISSUE SIMULANTS USED IN THE MEASUREMENTS ......................................................................................................... 13 5. DESCRIPTION OF THE TEST PROCEDURE .............................................................................................................. 14 5.1 DEVICE HOLDER .................................................................................................................................................................. 14 5.2 TEST POSITIONS .................................................................................................................................................................. 14 5.2.1 Against Phantom Head .......................................................................................................................................... 14 5.2.2 Body-worn 15 mm Configuration....................................................................................................................... 14 5.3 SCAN PROCEDURES ............................................................................................................................................................ 14 5.4 SAR AVERAGING METHODS ............................................................................................................................................. 15 6. MEASUREMENT UNCERTAINTY ................................................................................................................................. 16 7. RESULTS................................................................................................................................................................................. 18 7.1 THE MEASURED HEAD SAR VALUES FOR THE TEST DEVICE ............................................................................................ 18 7.1.1 GSM 850 Head SAR results for HW0240......................................................................................................... 18 7.1.2 GSM 850 Head SAR results for HW0242......................................................................................................... 18 7.1.3 GSM 1900 Head SAR results for HW0240 ...................................................................................................... 19 7.1.4 GSM 850 Head SAR results for HW0242......................................................................................................... 19 7.2 THE MEASURED BODY-WORN 15 MM SAR VALUES FOR THE TEST DEVICE ................................................................. 20 SAR Report Type: RM-1135 FCC_RM-1135_04 Applicant: Microsoft Copyright  2015 TCC Microsoft 2/21

____________________________________________________________________________ 7.2.1 GSM 850 Body-worn 15 mm SAR results for HW0240 ............................................................................. 20 7.2.2 GSM 850 Body-worn 15 mm SAR results for HW0242 ............................................................................. 20 7.2.3 GSM 1900 Body-worn 15 mm SAR results for HW0240 .......................................................................... 21 7.2.4 GSM 1900 Body-worn 15 mm SAR results for HW0242 .......................................................................... 21 APPENDIX A: SYSTEM CHECK SCANS APPENDIX B: MEASUREMENT SCANS APPENDIX C: DIELECTRIC PARAMETERS OF THE TISSUE SIMULANTS APPENDIX D: RELEVANT PAGES FROM PROBE CALIBRATION REPORTS APPENDIX E: RELEVANT PAGES FROM DIPOLE VALIDATION REPORTS SAR Report Type: RM-1135 FCC_RM-1135_04 Applicant: Microsoft Copyright  2015 TCC Microsoft 3/21

____________________________________________________________________________ 1. SUMMARY OF SAR TEST REPORT 1.1 Test Details Period of test 2015-06-03 to 2015-06-18 HW and SW numbers of tested device RM-1135, HW: 0240 and 0242, SW: 10.02.14 Batteries used in testing BL-5CB: 54928, 54929, 54930, 54931 Headsets used in testing WH-108: 54873, 54874 Other accessories used in testing - State of sample Prototype unit Notes - 1.2 Maximum Results The maximum reported SAR values for Head, Body-worn 15 mm configurations are given in section 1.2.1, 1.2.2 respectively. The device conforms to the requirements of the standards when the maximum measured SAR value is less than or equal to the limit. 1.2.1 Head Configuration Reported* SAR limit Mode SAR value Result Plot # (1g avg) (1g avg) GSM850 1.11 W/kg 1.6 W/kg PASSED H1 GSM1900 0.98 W/kg 1.6 W/kg PASSED H2 1.2.2 Body-worn 15 mm Configuration Reported* SAR limit Mode SAR value Result Plot # (1g avg) (1g avg) GSM850 0.46 W/kg 1.6 W/kg PASSED B1 GSM1900 0.30 W/kg 1.6 W/kg PASSED B2 * Reported SAR values are scaled to, or measured at, upper limit of power tuning tolerance. SAR Report Type: RM-1135 FCC_RM-1135_04 Applicant: Microsoft Copyright  2015 TCC Microsoft 4/21

____________________________________________________________________________ 1.2.3 Summary SAR data FCC-defined SAR values for the Description Grants of Equipment Authorization PCE DTS NII Maximum Head SAR values 1.11 - - {Max + Max} Simultaneous Head SAR value - Maximum Body-worn 15 mm SAR values 0.46 - - {Max + Max} Simultaneous Body-worn 15 mm - SAR value Maximum Simultaneous SAR value 1.11 Head SAR: GSM850 Note: PCE contains the highest results between all cellular modes (cellular, AWS and PCS bands) DTS contains the highest results between WLAN 2.4 GHz + RLAN 5725-5850 MHz NII contains the highest results between RLAN 5150-5250, 5250-5350 and 5470-5725 MHz 1.2.4 Maximum Drift Maximum drift during measurements ≤ 0.2 dB 1.2.5 Measurement Uncertainty Expanded Uncertainty (k=2) 95 % ± 29.8 % SAR Report Type: RM-1135 FCC_RM-1135_04 Applicant: Microsoft Copyright  2015 TCC Microsoft 5/21

____________________________________________________________________________ 2. DESCRIPTION OF THE DEVICE UNDER TEST Device category Portable Exposure environment General population / uncontrolled 2.1 Bands and Modes of the DUT Transmitter Channel Modes of Modulation Duty Frequency Bands Bandwidth Operation Mode Cycle Range (MHz) (MHz) 850 GSM GMSK 1/8 824 – 849 1900 GSM GMSK 1/8 1850 – 1910 2.2 DUT Features and Test Requirements Common features Testing / Specification / KDB HW0240:1 Number of SIM cards: HW0242:1 The Project RM-1135 has two HW versions, which are HW0240 and HW0242. The testing of all RM-1135 HW 0242 cellular bands has been minimised based on the earlier report FCC_RM-1135_01. Test bands The difference between HW 0240 and HW 0242 is that HW0242 have RF components from 2nd source supplier. Ambient temperature: 20.5 – 22.5 °C / Controlled Ambient humidity (RH %): 35 – 55 % RH / Controlled Antennas One antenna for cellular bands. The device output power was set to maximum power level for all tests. Output power and batteries A fully charged battery was used for every test sequence. In all operating bands the measurements were performed on lowest, middle and highest channels, Test channels and/or on all required test channels as defined in Published FCC KDB Procedures. GSM/GPRS/EGPRS KDB 941225 D03 SAR Test Reduction Procedures for GSM/GPRS/EDGE Call tester settings CMU200: MS signal was always set to maximum power: Pmax 5 for GSM850 and 0 for GSM1900. SAR Report Type: RM-1135 FCC_RM-1135_04 Applicant: Microsoft Copyright  2015 TCC Microsoft 6/21

____________________________________________________________________________ 3. CONDUCTED POWERS The conducted output power of the device was measured by a separate test laboratory on the same units as used for SAR testing. Shaded lines in the tables below show which mode/configuration is used in testing. 3.1 GSM 3.1.1 GSM850 Head, Body-worn 15 mm HW0240 GSM 850 SN: 004402741723641 Conducted power (dBm) Time-averaged power (dBm) Tuning Upper limit CH 128 CH 190 CH 251 CH 128 CH 190 CH 251 Slot configuration target (dBm) 824.2 MHz 836.6 MHz 848.8 MHz 824.2 MHz 836.6 MHz 848.8 MHz (dBm) GSM 1-slot 32.0 32.4 31.7 31.8 31.8 22.7 22.8 22.8 GPRS 2-slot N/A N/A N/A N/A N/A N/A N/A N/A GPRS 3-slot N/A N/A N/A N/A N/A N/A N/A N/A GPRS 4-slot N/A N/A N/A N/A N/A N/A N/A N/A HW0242 GSM 850 SN: 004402741723468 Conducted power (dBm) Time-averaged power (dBm) Tuning Upper limit CH 128 CH 190 CH 251 CH 128 CH 190 CH 251 Slot configuration target (dBm) 824.2 MHz 836.6 MHz 848.8 MHz 824.2 MHz 836.6 MHz 848.8 MHz (dBm) GSM 1-slot 32.0 32.4 31.9 32.0 32.0 22.9 23.0 23.0 GPRS 2-slot N/A N/A N/A N/A N/A N/A N/A N/A GPRS 3-slot N/A N/A N/A N/A N/A N/A N/A N/A GPRS 4-slot N/A N/A N/A N/A N/A N/A N/A N/A 3.1.2 GSM1900 Head, Body-worn 15 mm HW0240 GSM 1900 SN: 004402741722213 Conducted power (dBm) Time-averaged power (dBm) Tuning Upper limit CH 512 CH 661 CH 810 CH 512 CH 661 CH 810 Slot configuration target (dBm) 1850.2 MHz 1880.0 MHz 1909.8 MHz 1850.2 MHz 1880.0 MHz 1909.8 MHz (dBm) GSM 1-slot 30.0 30.4 30.3 30.3 30.4 21.3 21.3 21.3 GPRS 2-slot N/A N/A N/A N/A N/A N/A N/A N/A GPRS 3-slot N/A N/A N/A N/A N/A N/A N/A N/A GPRS 4-slot N/A N/A N/A N/A N/A N/A N/A N/A HW0242 GSM 1900 SN: 004402741723468 Conducted power (dBm) Time-averaged power (dBm) Tuning Upper limit CH 512 CH 661 CH 810 CH 512 CH 661 CH 810 Slot configuration target (dBm) 1850.2 MHz 1880.0 MHz 1909.8 MHz 1850.2 MHz 1880.0 MHz 1909.8 MHz (dBm) GSM 1-slot 30.0 30.4 30.0 30.0 30.0 20.9 21.0 21.0 GPRS 2-slot N/A N/A N/A N/A N/A N/A N/A N/A GPRS 3-slot N/A N/A N/A N/A N/A N/A N/A N/A GPRS 4-slot N/A N/A N/A N/A N/A N/A N/A N/A SAR Report Type: RM-1135 FCC_RM-1135_04 Applicant: Microsoft Copyright  2015 TCC Microsoft 7/21

____________________________________________________________________________ 4. DESCRIPTION OF THE TEST EQUIPMENT 4.1 Measurement System and Components The measurements were performed using an automated DASY near-field scanning system manufactured by Schmid & Partner Engineering AG (SPEAG) in Switzerland. The SAR extrapolation algorithm used in all measurements was the ‘advanced extrapolation’ algorithm. The following table lists calibration dates of SPEAG components: Calibration Test Equipment Serial Number Calibration expiry date DAE 4 860 2014-09 2015-09 DAE 4 480 2014-09 2015-09 E-field Probe EX3DV4 3839 2014-09 2015-09 E-field Probe EX3DV4 3574 2014-09 2015-09 Dipole Validation Kit, D835V2 4d005 2014-03 2016-03 Dipole Validation Kit, D1900V2 509 2014-09 2016-09 DASY5 software Version 52.8 - - Additional test equipment used in testing: Calibration Calibration Test Equipment Model Serial Number date expiry Signal Generator 8648C 3847M00258 2015-04 2016-04 Signal Generator SME03 846923/014 2015-04 2016-04 Amplifier ZHL-42W QA1252001 - - Amplifier ZHL-4240W e060204/1 - - Power Meter NRP 101293 2015-04 2016-04 Power Meter NRVD 840297/008 2015-04 2016-04 Power Sensor NRV-Z51 101135 2015-04 2016-04 Power Sensor NRP-Z51 100410 2015-04 2016-04 Call Tester CMU200 835352/008 - - Call Tester CMU200 831593/001 - - RF Network Analyzer E5071C MY46104578 2015-04 2016-04 RF Network Analyzer 8753ES My40002096 2015-04 2016-04 Dielectric Probe Kit DAK-3.5 1123 - - Dielectric Probe Kit 85070C 2577 - - SAR Report Type: RM-1135 FCC_RM-1135_04 Applicant: Microsoft Copyright  2015 TCC Microsoft 8/21

____________________________________________________________________________ 4.1.1 Isotropic E-field Probe Type EX3DV4 Construction Symmetrical design with triangular core Built-in shielding against static charges PEEK enclosure material (resistant to organic solvents, e.g., DGBE) Calibration Calibration certificate in Appendix D Frequency 10 MHz to >6 GHz (dosimetry); Linearity: ± 0.2 dB (30 MHz to 6 GHz) Directivity ± 0.3 dB in HSL (rotation around probe axis) ± 0.5 dB in tissue material (rotation normal to probe axis) Dynamic Range 10 µW/g to > 100 mW/g, Linearity: ± 0.2 dB Dimensions Overall length: 330 mm Tip length: 10 mm Body diameter: 12 mm Tip diameter: 2.5 mm Distance from probe tip to dipole centers: 1.0 mm Application General dosimetry up to 6 GHz Compliance tests of mobile phones Fast automatic scanning in arbitrary phantoms SAR Report Type: RM-1135 FCC_RM-1135_04 Applicant: Microsoft Copyright  2015 TCC Microsoft 9/21

____________________________________________________________________________ 4.2 Phantoms The phantom used for all Head SAR tests i.e. for both system checks and device testing, was the twin-headed "SAM Phantom", manufactured by SPEAG; the SAM phantom conforms to the requirements of IEEE 1528. The phantom used for all Body SAR tests i.e. for both system checks and device testing, was a flat phantom also manufactured by SPEAG this phantom conform to the requirements of FCC published RF Exposure KDB Procedures. The SPEAG device holder (see Section 5.1) was used to position the device in all tests whilst a tripod was used to position the validation dipoles against the flat section of phantom. 4.3 Tissue Simulants Recommended values for the dielectric parameters of the tissue simulants are given in IEEE 1528 and FCC published RF Exposure KDB Procedures. All tests were carried out using simulants whose dielectric parameters were within  5% of the recommended values. All tests were carried out within 24 hours of measuring the dielectric parameters. The depth of the tissue simulant was at least 15.0 cm for all system check and device tests, measured from the ear reference point in the case of the SAM phantom and from the inner surface of the flat phantom. 4.3.1 Tissue Simulant Recipes The following recipe(s) were used for Head and Body tissue simulant(s): 850 MHz band Head Body Ingredient (% by weight) (% by weight) Deionised Water 39.74 55.97 HEC 0.25 1.21 Sugar 58.31 41.76 Preservative 0.15 0.27 Salt 1.55 0.79 Head Body Ingredient (% by weight) (% by weight) Deionised Water 51.50 69.25 Tween 20 47.35 30.00 Salt 1.15 0.75 1900 MHz band Head Body Ingredient (% by weight) (% by weight) Deionised Water 54.50 70.25 Tween 20 45.23 29.41 Salt 0.27 0.34 SAR Report Type: RM-1135 FCC_RM-1135_04 Applicant: Microsoft Copyright  2015 TCC Microsoft 10/21

____________________________________________________________________________ 4.4 System validation and System checking 4.4.1 System validation status Probe DAE Validation done Calibrated Calibration Test DASY Dipole Probe unit Head Body signal Point System SW Type / SN Type / SN Type / tissue tissue type(s) f / MHz SN simulant simulant TCC D835V2 / EX3DV4 / DAE4 / 835 Beijing / V52.8 CW 2015-03 2015-03 4d005 3839 860 SAR-1 TCC D1900V2 / EX3DV4 / DAE4 / 1900 Beijing / V52.8 CW 2015-03 2015-03 509 3574 480 SAR-4 4.4.2 System checking The manufacturer calibrates the probes annually. Dielectric parameters of the tissue simulants were measured every day using the dielectric probe kit and the network analyser. A system check measurement was made following the determination of the dielectric parameters of the simulant, using the dipole validation kit. A power level of 250 mW was supplied to the dipole antenna. The dipole was placed under the flat section of the twin SAM phantom for head system checking, and under the flat phantom for body system checking. The system checking results (dielectric parameters and SAR values) are given in the table below. System checking, head tissue simulant SAR 1g Estimated Dielectric Parameters Dipole Estimated Scaled 1W Dielectric Parameters Deviation Deviation from target SAR 1g SAR 1g from target Temp Plot freq. Description SAR 1g SAR 1g [W/kg] Dev. dSAR [°C] # [MHz] [W/kg] [W/kg] [%] er s [S/m] dSAR [%] der [%] ds [%] Tolerances ±3% ±10 % ±5 % ±5 % Target result TCC Bej / SAR1 - - - 9.32 41.5 0.90 835 SN:4d005 3839 Head 835 MHz 2015-06-03 2.35 2.40 2.13 9.40 41.6 0.91 0.86 0.24 1.11 21.1 - 2015-06-05 2.32 2.34 0.86 9.28 41.9 0.89 -0.43 0.96 -1.11 20.5 - 2015-06-18 2.39 2.42 1.26 9.56 40.9 0.91 2.58 -1.45 1.11 20.5 1 Tolerances ±3% ±10 % ±5 % ±5 % Target result TCC Bej / SAR4 - - - 40.10 40.0 1.40 1900 SN:509 3574 Head 1900 MHz 2015-06-03 9.58 9.55 -0.31 38.32 38.8 1.39 -4.44 -3.00 -0.71 21.0 - 2015-06-18 9.54 9.66 1.26 38.16 38.3 1.37 -4.84 -4.25 -2.14 20.5 2 * Dielectric parameter reference data taken from IEEE1528/IEC622094 SAR Report Type: RM-1135 FCC_RM-1135_04 Applicant: Microsoft Copyright  2015 TCC Microsoft 11/21

____________________________________________________________________________ System checking, body tissue simulant SAR 1g Estimated Dielectric Parameters Dipole Estimated Scaled 1W Dielectric Parameters Deviation Deviation from target SAR 1g SAR 1g from target Temp Plot freq. Description SAR 1g SAR 1g [W/kg] Dev. dSAR [°C] # [MHz] [W/kg] [W/kg] [%] er s [S/m] dSAR [%] der [%] ds [%] Tolerances ±3% ±10 % ±5 % ±5 % Target result TCC Bej / SAR1 - - - 9.31 55.2 0.97 835 SN:4d005 3839 Body 835 MHz 2015-06-03 2.42 2.45 1.24 9.68 53.3 0.94 3.97 -3.44 -3.09 21.1 - 2015-06-18 2.49 2.52 1.20 9.96 53.6 0.96 6.98 -2.90 -1.03 20.5 3 Tolerances ±3% ±10 % ±5 % ±5 % Target result TCC Bej / SAR4 - - - 38.70 53.3 1.52 1900 SN:509 3574 Body 1900 MHz 2015-06-03 9.18 9.25 0.76 36.72 52.6 1.49 -5.12 -1.31 -1.97 21.0 4 2015-06-18 9.39 9.30 -0.96 37.56 53.7 1.51 -2.95 0.75 -0.66 20.5 - * Dielectric parameter reference data taken from FCC Published RF Exposure KDB Procedures Plots of the system checking scans are given in Appendix A. SAR Report Type: RM-1135 FCC_RM-1135_04 Applicant: Microsoft Copyright  2015 TCC Microsoft 12/21

____________________________________________________________________________ 4.5 Tissue Simulants used in the Measurements Head tissue simulant measurements Dielectric Parameters Dielectric f Deviation from Temp Parameters recommended value [MHz] Description er s [S/m] der [%] ds [%] [°C] Tolerances ±5 % ±5 % 835 Recommended value 41.5 0.90 2015-06-03 41.6 0.91 0.24 1.11 21.1 2015-06-05 41.9 0.89 0.96 -1.11 20.5 2015-06-18 40.9 0.91 -1.45 1.11 20.5 Tolerances ±5 % ±5 % 1880 Recommended value 40.0 1.40 2015-06-03 38.9 1.37 -2.75 -2.14 21.0 2015-06-18 38.4 1.35 -4.00 -3.57 20.5 Body tissue simulant measurements Dielectric Parameters Dielectric f Deviation from Temp Parameters recommended value [MHz] Description er s [S/m] der [%] ds [%] [°C] Tolerances ±5 % ±5 % 835 Recommended value 55.2 0.97 2015-06-03 53.3 0.94 -3.44 -3.09 21.1 2015-06-18 53.6 0.96 -2.90 -1.03 20.5 Tolerances ±5 % ±5 % 1880 Recommended value 53.3 1.52 2015-06-03 52.7 1.47 -1.13 -3.29 21.0 2015-06-18 53.7 1.49 0.75 -1.97 20.5 Dielectric parameter data for the band edges is given in Appendix C. SAR Report Type: RM-1135 FCC_RM-1135_04 Applicant: Microsoft Copyright  2015 TCC Microsoft 13/21

____________________________________________________________________________ 5. DESCRIPTION OF THE TEST PROCEDURE 5.1 Device Holder The device was placed in the device holder (illustrated below) that is supplied by SPEAG as an integral part of the Dasy system. Device holder supplied by SPEAG A spacer (illustrated below) was used to position the device within the SPEAG holder. The spacer positions the device so that the holder has minimal effect on the test results but still holds the device securely. The spacer was removed before the tests. Spacer 5.2 Test Positions 5.2.1 Against Phantom Head Measurements were made in “cheek” and “tilt” positions on both the left hand and right hand sides of the phantom. The positions used in the measurements were according to IEEE 1528 "IEEE Recommended Practice for Determining the Peak Spatial-Average Specific Absorption Rate (SAR) in the Human Head from Wireless Communications Devices: Measurement Techniques". 5.2.2 Body-worn 15 mm Configuration The device was placed in the SPEAG holder using the spacer and placed below the flat phantom. The distance between the device and the phantom was kept at the separation distance indicated in Section 1.2 using a separate flat spacer that was removed before the start of the measurements. The device was oriented with both sides facing the phantom to find the highest results. Microsoft Body-worn accessories are commonly available for the separation distance used in this testing. 5.3 Scan Procedures First, area scans were used for determination of the field distribution. Next, a zoom scan, a minimum of 5x5x7 points covering a volume of at least 30x30x30mm, was performed around the highest E-field value to determine SAR Report Type: RM-1135 FCC_RM-1135_04 Applicant: Microsoft Copyright  2015 TCC Microsoft 14/21

____________________________________________________________________________ the averaged SAR value. Drift was determined by measuring the same point at the start of the area scan and again at the end of the zoom scan. Fast SAR is measured according to the KDB 447498 D01 General RF Exposure Guidance v05r01. 5.4 SAR Averaging Methods The maximum SAR value was averaged over a cube of tissue using interpolation and extrapolation. The interpolation, extrapolation and maximum search routines within Dasy52 are all based on the modified Quadratic Shepard’s method (Robert J. Renka,”Multivariate Interpolation of Large Sets of Scattered Data”, University of North Texas ACM Transactions on Mathematical Software, vol. 14, no. 2, June 1988, pp. 139-148). The interpolation scheme combines a least-square fitted function method with a weighted average method. A trivariate 3-D / bivariate 2-D quadratic function is computed for each measurement point and fitted to neighbouring points by a least-square method. For the zoom scan, inverse distance weighting is incorporated to fit distant points more accurately. The interpolating function is finally calculated as a weighted average of the quadratics. In the zoom scan, the interpolation function is used to extrapolate the Peak SAR from the deepest measurement points to the inner surface of the phantom. SAR Report Type: RM-1135 FCC_RM-1135_04 Applicant: Microsoft Copyright  2015 TCC Microsoft 15/21

____________________________________________________________________________ 6. MEASUREMENT UNCERTAINTY Table 6.1 – Measurement uncertainty evaluation for 1g Full SAR in 0.3-6G Hz range Secti on in Tol. Prob ci ci .ui vi Uncertainty Component Div IEEE (%) Dist (%) 1528 Measurement System Probe Calibration E2.1 6.6 N 1 1 6.6  Axial Isotropy E2.2 4.7 R 3 (1-cp)1/2 1.9  Hemispherical Isotropy E2.2 9.6 R 3 (cp)1/2 3.9  Boundary Effect E2.3 2.0 R 3 1 1.2  Linearity E2.4 4.7 R 3 1 2.7  System Detection Limits E2.5 1.0 R 3 1 0.6  Modulation response E2.5 2.4 R 3 1 1.4 Readout Electronics E2.6 0.3 N 1 1 0.3  Response Time E2.7 0.8 R 3 1 0.5  Integration Time E2.8 2.6 R 3 1 1.5  RF Ambient Conditions - Noise E6.1 3.0 R 3 1 1.7  RF Ambient Conditions - Reflections E6.1 3.0 R 3 1 1.7  Probe Positioner Mechanical Tolerance E6.2 0.8 R 3 1 0.5  Probe Positioning with respect to Phantom E6.3 6.7 R 3 1 3.9  Shell Extrapolation, interpolation and Integration E5 4.0 R 3 1 2.3  Algorithms for Max. SAR Evaluation Test sample Related Test Sample Positioning E4.2 6.0 N 1 1 6.0 11 Device Holder Uncertainty E4.1 3.6 N 1 1 3.6 5 Output Power Variation - SAR drift E2.9 5.0 R 3 1 2.9  measurement Phantom and Tissue Parameters Phantom Uncertainty (shape and thickness E3.1 6.6 R 3 1 3.8  tolerances) SAR correction E3.2 1.9 R 3 1 1.1  Conductivity Target - tolerance E3.4 5.0 R 3 0.6 1.8  Conductivity - measurement uncertainty E3.3 5.5 N 1 0.6 3.5 5 Permittivity Target - tolerance E3.4 5.0 R 3 0.6 1.7  Permittivity - measurement uncertainty E3.3 2.9 N 1 0.6 1.7 5 Combined Standard Uncertainty RSS 14.0 198 Coverage Factor for 95% k=2 Expanded Uncertainty 28.2 SAR Report Type: RM-1135 FCC_RM-1135_04 Applicant: Microsoft Copyright  2015 TCC Microsoft 16/21

____________________________________________________________________________ Table 6.2 – Measurement uncertainty evaluation for 1g Fast SAR in 0.3-6G Hz range Relative DASY5 Uncertainty Budget for Fast SAR Tests According to IEEE 1528/2011 and IEC 62209-1/2011 (0.3-6 GHz range) Tol. Prob ci ci .ui vi Uncertainty Component Div. (%) Dist. (%) Measurement System Probe Calibration ±6.6 N 1 0 Axial Isotropy ±4.7 R 3 (1-cp)1/2 ±1.9  Hemispherical Isotropy ±9.6 R 3 (cp)1/2 ±3.9  Boundary Effect ±2.0 R 3 1 ±1.2  Linearity ±4.7 R 3 1 ±2.7  System Detection Limits ±1.0 R 3 1 ±0.6  Modulation Response ±2.4 R 3 1 ±1.4  Readout Electronics ±0.3 N 1 0 Response Time ±0.8 R 3 0 Integration Time ±2.6 R 3 1 ±1.5  RF Ambient Conditions - Noise ±3.0 R 3 1 ±1.7  RF Ambient Conditions - Reflections ±3.0 R 3 0 Probe Positioner Mechanical Tolerance ±0.8 R 3 1 ±0.5  Probe Positioning with respect to Phantom Shell ±6.7 R 3 1 ±3.9  Spatial x-y Resolution ±10.0 R 3 1 ±5.8  Fast SAR z Approximation ±14.0 R 3 1 ±8.1  Test sample Related Test Sample Positioning ±6.0 N 1 1 ±6.0 12 Device Holder Uncertainty ±3.6 N 1 1 ±3.6 5 Output Power Variation - SAR drift ±5.0 R 3 1 ±2.9  measurement Power Scaling ±0 R 3 0 Phantom and Setup Phantom Uncertainty (shape and thickness ±6.6 R 3 1 ±3.8  tolerances) SAR correction ±1.9 R 3 0 Conductivity Target - tolerance 1.9 R 3 0 Conductivity - measurement uncertainty 5.0 R 3 0 Permittivity Target - tolerance 5.5 N 1 0 Permittivity - measurement uncertainty 5.0 R 3 0 Combined Standard Uncertainty RSS ±14.9 748 Coverage Factor for 95% k=2 Expanded Uncertainty ±29.8 SAR Report Type: RM-1135 FCC_RM-1135_04 Applicant: Microsoft Copyright  2015 TCC Microsoft 17/21

____________________________________________________________________________ 7. RESULTS 7.1 The measured Head SAR values for the test device 7.1.1 GSM 850 Head SAR results for HW0240 GSM850 Measured 1g SAR [W/kg] Reported* 1g SAR [W/kg] Max Device SAR CH 128 CH 190 CH 251 CH 128 CH 190 CH 251 Plot Deviation* orientation measurement 824.2 836.6 848.8 824.2 836.6 848.8 # MHz MHz MHz MHz MHz MHz [W/kg] Upper limit 32.4 Scaling factor* Conducted Power 31.7 31.8 31.8 0.7 0.6 0.6 dB Time-averaged Power 22.7 22.8 22.8 1.17 1.15 1.15 Lin Estimated SAR 0.786 0.856 0.928 0.917 0.983 1.063 Left Cheek 0.01 - Full SAR - - 0.921 - - 1.055 Estimated SAR - 0.399 - - 0.458 - Left Tilt 0.03 - Full SAR - 0.373 - - 0.428 - Estimated SAR 0.781 0.855 0.910 0.911 0.982 1.042 Right Cheek 0.01 - Full SAR - - 0.904 - - 1.036 Estimated SAR - 0.379 - - 0.435 - Right Tilt - - Full SAR - - - - - - Left Cheek Estimated SAR - - 0.974 - - 1.116 0.01 H1 Repeated Full SAR - - 0.966 - - 1.107 7.1.2 GSM 850 Head SAR results for HW0242 GSM850 Measured 1g SAR [W/kg] Reported* 1g SAR [W/kg] Max Device SAR CH 128 CH 190 CH 251 CH 128 CH 190 CH 251 Plot Deviation* orientation measurement 824.2 836.6 848.8 824.2 836.6 848.8 # MHz MHz MHz MHz MHz MHz [W/kg] Upper limit 32.4 Scaling factor* Conducted Power 31.9 32.0 32.0 0.5 0.4 0.4 dB Time-averaged Power 22.9 23.0 23.0 1.12 1.10 1.10 Lin Estimated SAR 0.716 0.794 0.868 0.803 0.871 0.952 Left Cheek 0.00 - Full SAR - - 0.866 - - 0.950 Left Cheek Estimated SAR - - 0.907 - - 0.995 - - Repeated Full SAR - - 0.907 - - 0.995 SAR Report Type: RM-1135 FCC_RM-1135_04 Applicant: Microsoft Copyright  2015 TCC Microsoft 18/21

____________________________________________________________________________ 7.1.3 GSM 1900 Head SAR results for HW0240 GSM1900 Measured 1g SAR [W/kg] Reported* 1g SAR [W/kg] Max Device SAR CH 512 CH 661 CH 810 CH 512 CH 661 CH 810 Plot Deviation* orientation measurement 1850.2 1880.0 1909.8 1850.2 1880.0 1909.8 # MHz MHz MHz MHz MHz MHz [W/kg] Upper limit 30.4 Scaling factor* Conducted Power 30.3 30.3 30.4 0.1 0.1 - dB Time-averaged Power 21.3 21.3 21.4 1.02 1.02 1.00 Lin Estimated SAR 0.822 0.835 0.875 0.841 0.854 0.875 Left Cheek 0.00 - Full SAR - - 0.878 - - 0.878 Estimated SAR - 0.312 - - 0.319 - Left Tilt - - Full SAR - - - - - - Estimated SAR 0.965 0.984 0.988 0.987 1.007 0.988 Right Cheek 0.03 H2 Full SAR - 0.957 - - 0.979 - Estimated SAR - 0.347 - - 0.355 - Right Tilt 0.00 - Full SAR - 0.342 - - 0.350 - Right Cheek Estimated SAR - 0.965 - - 0.987 - 0.02 - Repeated Full SAR - 0.947 - - 0.969 - 7.1.4 GSM 850 Head SAR results for HW0242 GSM1900 Measured 1g SAR [W/kg] Reported* 1g SAR [W/kg] Max Device SAR CH 512 CH 661 CH 810 CH 512 CH 661 CH 810 Plot Deviation* orientation measurement 1850.2 1880.0 1909.8 1850.2 1880.0 1909.8 # MHz MHz MHz MHz MHz MHz [W/kg] Upper limit 30.4 Scaling factor* Conducted Power 30.0 30.0 30.0 0.4 0.4 0.4 dB Time-averaged Power 21.3 21.3 21.4 1.10 1.10 1.10 Lin Estimated SAR 0.814 0.855 0.876 0.893 0.937 0.961 Right Cheek 0.04 - Full SAR - - 0.832 - - 0.912 Right Cheek Estimated SAR - - 0.856 - - 0.939 0.03 - Repeated Full SAR - - 0.828 - - 0.908 Individual Head SAR plots are given in Appendix B. Note: * Reported SAR values are scaled to, or measured at, upper limit of power tuning tolerance. The highest result within individual zoom scan or individual expanded zoom scan results is given in Section 1.2 for each transmitter. The highest result within contributing individual zoom scan, individual expanded zoom scan, Speag combined algorithm or combined expanded zoom scan results is given in the Section for the simultaneous transmitter combination giving the highest combinated value. SAR Report Type: RM-1135 FCC_RM-1135_04 Applicant: Microsoft Copyright  2015 TCC Microsoft 19/21

____________________________________________________________________________ 7.2 The measured Body-worn 15 mm SAR values for the test device 7.2.1 GSM 850 Body-worn 15 mm SAR results for HW0240 GSM850 Measured 1g SAR [W/kg] Reported* 1g SAR [W/kg] Max Device SAR CH 128 CH 190 CH 251 CH 128 CH 190 CH 251 Plot Deviation* orientation measurement 824.2 836.6 848.8 824.2 836.6 848.8 # MHz MHz MHz MHz MHz MHz [W/kg] Upper limit 32.4 Scaling factor* Conducted Power 31.7 31.8 31.8 0.7 0.6 0.6 dB Time-averaged Power 22.7 22.8 22.8 1.17 1.15 1.15 Lin Estimated SAR - 0.342 - - 0.393 - Back - - Full SAR - - - - - - Estimated SAR 0.371 0.387 0.403 0.433 0.444 0.462 Display - B1 Full SAR - - 0.403 - - 0.462 Display Estimated SAR - - 0.322 - - 0.369 - - WH-108 Full SAR - - - - - - 7.2.2 GSM 850 Body-worn 15 mm SAR results for HW0242 GSM850 Measured 1g SAR [W/kg] Reported* 1g SAR [W/kg] Max Device SAR CH 128 CH 190 CH 251 CH 128 CH 190 CH 251 Plot Deviation* orientation measurement 824.2 836.6 848.8 824.2 836.6 848.8 # MHz MHz MHz MHz MHz MHz [W/kg] Upper limit 32.4 Scaling factor* Conducted Power 31.9 32.0 32.0 0.5 0.4 0.4 dB Time-averaged Power 22.9 23.0 23.0 1.12 1.10 1.10 Lin Estimated SAR 0.368 0.381 0.396 0.413 0.418 0.434 Display - - Full SAR - - 0.396 - - 0.434 SAR Report Type: RM-1135 FCC_RM-1135_04 Applicant: Microsoft Copyright  2015 TCC Microsoft 20/21

____________________________________________________________________________ 7.2.3 GSM 1900 Body-worn 15 mm SAR results for HW0240 GSM1900 Measured 1g SAR [W/kg] Reported* 1g SAR [W/kg] Max Device SAR CH 512 CH 661 CH 810 CH 512 CH 661 CH 810 Plot Deviation* orientation measurement 1850.2 1880.0 1909.8 1850.2 1880.0 1909.8 # MHz MHz MHz MHz MHz MHz [W/kg] Upper limit 30.4 Scaling factor* Conducted Power 30.3 30.3 30.4 0.1 0.1 - dB Time-averaged Power 21.3 21.3 21.4 1.02 1.02 1.00 Lin Estimated SAR - 0.262 - - 0.268 - Back - - Full SAR - - - - - - Estimated SAR 0.294 0.294 0.314 0.301 0.301 0.314 Display 0.01 B2 Full SAR - - 0.304 - - 0.304 Display Estimated SAR - - 0.273 - - 0.273 - - WH-108 Full SAR - - - - - - 7.2.4 GSM 1900 Body-worn 15 mm SAR results for HW0242 GSM1900 Measured 1g SAR [W/kg] Reported* 1g SAR [W/kg] Max Device SAR CH 512 CH 661 CH 810 CH 512 CH 661 CH 810 Plot Deviation* orientation measurement 1850.2 1880.0 1909.8 1850.2 1880.0 1909.8 # MHz MHz MHz MHz MHz MHz [W/kg] Upper limit 30.4 Scaling factor* Conducted Power 30.0 30.0 30.0 0.4 0.4 0.4 dB Time-averaged Power 21.3 21.3 21.4 1.10 1.10 1.10 Lin Estimated SAR 0.240 0.238 0.251 0.263 0.261 0.275 Display 0.00 - Full SAR - - 0.247 - - 0.271 Individual Body-worn 15 mm SAR plots are given Appendix B. Note: * Reported SAR values are scaled to, or measured at, upper limit of power tuning tolerance. The highest result within individual zoom scan or individual expanded zoom scan results is given in Section 1.2 for each transmitter. The highest result within contributing individual zoom scan, individual expanded zoom scan, Speag combined algorithm or combined expanded zoom scan results is given in the Section for the simultaneous transmitter combination giving the highest combinated value. SAR Report Type: RM-1135 FCC_RM-1135_04 Applicant: Microsoft Copyright  2015 TCC Microsoft 21/21


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Document Modified: 2015-06-23 09:31:03
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