FCC SAR report_BGM11s_07042017

FCC ID: QOQ11

RF Exposure Info

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FCCID_3425229

SAR Compliance Test Report Date of Report 7/04/2017 Client’s Contact Number of 21 person: Pasi Rahikkala pages: Responsible Test Kirsi Kyllönen engineer: Testing Verkotan Oy Client: Silicon Labs Finland laboratory: Elektroniikkatie 17 Alberga Business Park 90590 Oulu Bertel Jungin aukio 3 Finland Espoo 02600 Finland Tested device BGM11S Related reports: - Testing has 47CFR §2.1093 been carried out Radiofrequency Radiation Exposure Evaluation: Portable Devices in accordance with: FCC published RF exposure KDB procedures RSS-102, Issue 5 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 test report must always be reproduced in full; reproduction of an excerpt only is subject to written approval of the testing laboratory Test Results: The EUT complies with the requirements in respect of all parameters subject to the test. The test results relate only to devices specified in this document Date and 07.04.2017 signatures: Digitally signed Miia For the contents: by Miia Nurkkala Nurkkala Date: 2017.04.07 10:29:23 +03'00' Laboratory Manager 1 (21) _________________________________________________________________________________________

TABLE OF CONTENTS 1. SUMMARY OF SAR TEST REPORT ...................................................................................................... 3 1.1 TEST DETAILS .................................................................................................................................. 3 1.2 MAXIMUM RESULTS ........................................................................................................................ 3 1.2.1 Maximum Drift ............................................................................................................................... 3 1.2.2 Measurement Uncertainty ............................................................................................................. 3 2. DESCRIPTION OF THE DEVICE UNDER TEST (DUT) .......................................................................... 4 2.1 SUPPORTED FREQUENCY BANDS AND OPERATIONAL MODES.............................................. 4 3. OUTPUT POWER ..................................................................................................................................... 5 3.1 MAXIMUM SPECIFIED CONDUCTED OUTPUT POWER ............................................................... 5 3.2 TESTED CONDUCTED POWER ...................................................................................................... 5 4. TEST EQUIPMENT ................................................................................................................................... 6 4.1 TEST EQUIPMENT LIST ................................................................................................................... 6 4.1.1 Isotropic E-field Probe Type EX3DV4 ........................................................................................... 7 CONSTRUCTION .......................................................................................................................................... 7 4.2 PHANTOM ......................................................................................................................................... 7 Modular Flat Phantom (MFP) .................................................................................................................... 7 4.3 TISSUE SIMULANTS ........................................................................................................................ 7 4.3.1 Recipes .......................................................................................................................................... 7 4.4 SYSTEM VALIDATION STATUS ...................................................................................................... 7 4.5 SYSTEM CHECK .............................................................................................................................. 8 4.5.1 Tissue Simulant Verification .......................................................................................................... 8 5. TEST PROCEDURE .................................................................................................................................. 9 5.1.1 Body-worn Configuration, 4.8 mm separation distance .............................................................. 9 5.2 SCAN PROCEDURES ...................................................................................................................... 9 5.3 SAR AVERAGING METHODS .......................................................................................................... 9 6. MEASUREMENT UNCERTAINTY .......................................................................................................... 10 7. TEST RESULTS ...................................................................................................................................... 11 7.1 BODY-WORN CONFIGURATION, 4.8 MM SEPARATION DISTANCE ......................................... 11 APPENDIX A: PHOTOS OF THE DUT ........................................................................................................... 12 APPENDIX B: SYSTEM CHECK SCAN ......................................................................................................... 16 APPENDIX C: MEASUREMENT SCAN ......................................................................................................... 17 APPENDIX D: RELEVANT PAGES FROM PROBE CALIBRATION REPORTS ......................................... 18 APPENDIX E: RELEVANT PAGES FROM DIPOLE CALIBRATION REPORTS ......................................... 20 2 (21) _________________________________________________________________________________________

1. SUMMARY OF SAR TEST REPORT 1.1 Test Details Equipment under Test (EUT): Product: BGM11S Manufacturer: Silicon Labs Serial Number: NA FCC ID Number: QOQ11 ISED ID Number: 5123A-11 Hardware Version: 1.0 DUT Number: 23087 Battery Type used in testing: 087087 Powered externally Portable/ Mobile device Portable State of the Sample Production sample Testing information: Testing performed: 4.4.2017 Notes: ID2028 Document name: FCC SAR report_BGM11s_07042017.docx Temperature C 22±2 / Controlled Humidity RH% 20±20 / Controlled Measurement performed by: Kirsi Kyllönen 1.2 Maximum Results The maximum reported* SAR value for Body-worn configuration with 4.8 mm separation distance is shown in a table below. The device conforms to the requirements of the standards when the maximum reported SAR value is less than or equal to the limit. The SAR limit specified in FCC 47 CFR part 2 (2.1093) for Body is SAR1g 1.6 W/kg, Highest Reported* SAR1g(W/kg) in Equipment Class System Result Body-Worn Condition DTS Bluetooth 0.22 PASS * Reported SAR Values are scaled to upper limit of power tuning tolerance. 1.2.1 Maximum Drift Maximum Drift During Measurements -0.24 dB* *Drifts larger than 5% are considered in the scaling factor. 1.2.2 Measurement Uncertainty Expanded Uncertainty (k=2) 95 % ±22.3 % 3 (21) _________________________________________________________________________________________

2. DESCRIPTION OF THE DEVICE UNDER TEST (DUT) The tested device is a Bluetooth module that was implemented to a PCB. Dimensions of the PCB were 37.6 mm x 40.3 mm. The dimensions of the PCB were selected by the manufacturer to optimize radiation efficiency of the DUT. Device Category Portable Exposure Environment Uncontrolled 2.1 Supported Frequency Bands and Operational Modes TX Transmitter Frequency Modes of Operation Modulation Mode Frequency Range (MHz) bands Bluetooth GFSK 2402 - 2480 Common features Output Power and Batteries The module was powered by a power supply during measurements. Size of the module 6.5mm x 6.5mm Antenna type Internal antenna 4 (21) _________________________________________________________________________________________

3. OUTPUT POWER 3.1 Maximum specified conducted output power From a Customer; Upper Limit (dBm) Standard CH 0 CH 40 CH 78 2.402 2.442 2.480 GHz GHz GHz Bluetooth 10.5 10.5 10.5 3.2 Tested conducted power Measured Power (dBm) Standard CH 0 CH 40 CH 78 2.402 2.442 2.480 GHz GHz GHz Bluetooth 10.0 9.7 9.3 5 (21) _________________________________________________________________________________________

4. TEST EQUIPMENT Dasy52 near field scanning system, manufactured by SPEAG was used for SAR testing. The test system consists of high precision robotics system (Staubli), robot controller, computer, near-field probe, probe alignment sensor, and a phantom containing the tissue equivalent material. The robot is a six-axis industrial robot performing precise movements to position the probe to the location of maximum electromagnetic field. Figure 1 Schematic Laboratory Picture 4.1 Test Equipment List Main used test system components are listed below. For full equipment list and calibration intervals, please contact the testing laboratory. Test Equipment Model Serial Number Calibration date DAE DAE3 710 03.2017 Probe EX3DV4 7447 03.2017 Dipole D2450V2 758 01.2016 DASY5 Software 52.8.8.1258 - na Signal Generator Agilent E4438C MY42082527 05.2015 Amplifier AR 5S1G4 27573 na Power Sensor NRP-Z21 100244 01.2017 6 (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 10 MHz to >6 GHz (dosimetry); Linearity: ± 0.2 dB (30 MHz to 6 GHz) Frequency 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 Overall length: 330 mm Dimensions Tip length: 10 mm Body diameter: 12 mm Tip diameter: 2.5 mm General dosimetry up to 6 GHz Application Distance from probe tip to dipole centers: 1.0 mm Compliance tests of mobile phones Fast automatic scanning in arbitrary phantoms 4.2 Phantom Modular Flat Phantom (MFP) The Triple Modular Phantom consists of three identical modules that can be installed and removed separately without emptying the liquid. It is used for compliance testing of small wireless devices in body-worn configurations according to IEC 62209-2, etc. 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. The dielectric parameters of the used tissue simulants were within ±5% of the recommended values in all frequencies used. SAR testing was carried out within 24 hours of measuring the dielectric parameters. Depth of the tissue simulant was at least 15.0 cm from the inner surface of the flat phantom. 4.3.1 Recipes Ingredient Body (% by weight) 2350-2700 MHz Deionized Water 70.2 Tween 20 29.62 Salt 0.18 4.4 System Validation Status Calibrated Validation Done Frequency Dipole Type / SN Probe Type / SN DAE Unit / Signal Type Body tissue simulant [MHz] SN 2450 D2450V2 / 758 EX3DV4 / 7447 CW DAE3 / 710 3/2017 7 (21) _________________________________________________________________________________________

4.5 System Check Measured 1 W Target 1W Tissue Tissue Frequency Input Deviation1g Date SAR1g SAR1g Normalized Plot # Type Temp. [°C] [MHz] Power (%) [W/kg] [W/kg] SAR1g [W/kg] 3.4.2017 M2450 21.5 2450 250mW 12.6 51.2 50.4 -1.6 1 4.5.1 Tissue Simulant Verification Target Measured Tissue Dielectric Dielectric Deviation Tissue Frequency Conductivity, σ Conductivity Deviation σ Date Temp. Constant Constant ε (%) Type [MHz] [S/m] σ [S/m] (%) [°C] [ε] [ε] 2402 1.90 52.8 1.87 50.5 -1.8 -4.4 3.4.2017 M2450 22 2442 1.95 52.7 1.92 50.3 -1.1 -4.6 2450 1.96 52.7 1.93 50.3 -0.9 -4.6 2480 2.00 52.7 1.97 50.2 -1.0 -4.8 8 (21) _________________________________________________________________________________________

5. TEST PROCEDURE The DUT was set to transmit at a maximum power level and a maximum duty cycle using a manufacturer specified software. 5.1.1 Body-worn Configuration, 4.8 mm separation distance The DUT was placed below the flat phantom using a SPEAG device holder. The DUT was lifted towards the phantom until correct separation distance was reached. Pictures of the test positions are in appendix A. 5.2 Scan Procedures First, area scans were used for determination of the field distribution. Next, a zoom scan with 7x7x7 points covering a volume of 30x30x30mm was performed around the highest E-field value to determine the averaged SAR value. Power drift was determined by measuring the same point at the start of the area scan and again at the end of the zoom scan. 5.3 SAR Averaging Methods The maximum SAR value is averaged over a cube of tissue using interpolation and extrapolation. Extrapolation routines are used to obtain SAR values between the lowest measurement points and the inner phantom surface. The extrapolation distance is determined by the surface detection distance and the probe sensor offset. Several measurements at different distances are necessary for the extrapolation. The interpolation, extrapolation and maximum search routines within Dasy47 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). 9 (21) _________________________________________________________________________________________

6. MEASUREMENT UNCERTAINTY DASY5 Uncertainty Budget According to IEEE 1528-2013 and IEC 62209- 1/201x (0.3 - 3 GHz range) Uncert. Prob. Div. (ci) (ci) Std. Unc. Std. Unc. (vi) Error Description value Dist. 1g 10g (1g) (10g) veff Measurement System Probe Calibration ±6.0 % N 1 1 1 ±6.0 % ±6.0 % ∞ Axial Isotropy ±4.7 % R √ 0.7 0.7 ±1.9 % ±1.9 % ∞ 3 Hemispherical Isotropy ±9.6 % R √ 0.7 0.7 ±3.9 % ±3.9 % ∞ 3 Boundary Effects ±1.0 % R √ 1 1 ±0.6 % ±0.6 % ∞ 3 Linearity ±4.7 % R √ 1 1 ±2.7 % ±2.7 % ∞ 3 System Detection Limits ±1.0 % R √ 1 1 ±0.6 % ±0.6 % ∞ 3 Modulation Responsem ±2.4 % R √ 1 1 ±1.4 % ±1.4 % ∞ 3 Readout Electronics ±0.3 % N 1 1 1 ±0.3 % ±0.3 % ∞ Response Time ±0.8 % R √ 1 1 ±0.5 % ±0.5 % ∞ 3 Integration Time ±2.6 % R √ 1 1 ±1.5 % ±1.5 % ∞ 3 RF Ambient Noise ±3.0 % R √ 1 1 ±1.7 % ±1.7 % ∞ 3 RF Ambient Reflections ±3.0 % R √ 1 1 ±1.7 % ±1.7 % ∞ 3 Probe Positioner ±0.4 % R √ 1 1 ±0.2 % ±0.2 % ∞ 3 Probe Positioning ±2.9 % R √ 1 1 ±1.7 % ±1.7 % ∞ 3 Max. SAR Eval. ±2.0 % R √ 1 1 ±1.2 % ±1.2 % ∞ 3 Test Sample Related Device Positioning ±2.9 % N 1 1 1 ±2.9 % ±2.9 % 145 Device Holder ±3.6 % N 1 1 1 ±3.6 % ±3.6 % 5 Power Drift ±5.0 % R √ 1 1 ±2.9 % ±2.9 % ∞ 3 Power Scalingp ±0 % R √ 1 1 ±0.0 % ±0.0 % ∞ 3 Phantom and Setup Phantom Uncertainty ±6.1 % R √ 1 1 ±3.5 % ±3.5 % ∞ 3 SAR correction ±1.9 % R √ 1 0.84 ±1.1 % ±0.9 % ∞ 3 Liquid Conductivity (mea.) DAK ±2.5 % R √ 0.78 0.71 ±1.1 % ±1.0 % ∞ 3 Liquid Permittivity (mea.) DAK ±2.5 % R √ 0.26 0.26 ±0.3 % ±0.4 % ∞ 3 Temp. unc. - Conductivity BB ±3.4 % R √ 0.78 0.71 ±1.5 % ±1.4 % ∞ 3 Temp. unc. - Permittivity BB ±0.4 % R √ 0.23 0.26 ±0.1 % ±0.1 % ∞ 3 Combined Std. Uncertainty ±11.2 % ±11.1 % 361 Expanded STD Uncertainty ±22.3 % ±22.2 % 10 (21) _________________________________________________________________________________________

7. TEST RESULTS 7.1 Body-Worn Configuration, 4.8 mm separation distance Maximun Conducted Measured Reported Plot # Test Power Drift Scaling Band Channel Power Power Dudy Cycle SAR1g SAR1g Position* [dB] Factor [dBm] [dBm] [mW/g] [mW/g] 2442 40 front 10.5 9.7 -0.19 1:1.6 0.15 1.20 0.18 2442 40 back 10.5 9.7 -0.11 1:1.6 0.18 1.20 0.22 2442 40 right 10.5 9.7 -0.24* 1:1.6 0.03 1.27 0.04 2442 40 left 10.5 9.7 -0.04 1:1.6 0.02 1.20 0.02 2442 40 top 10.5 9.7 -0.02 1:1.6 0.15 1.20 0.18 2442 40 bottom 10.5 9.7 -0.22 1:1.6 0.02 1.20 0.02 2402 0 back 10.5 10 -0.1 1:1.6 0.17 1.12 0.19 2480 78 back 10.5 9.3 0.02 1:1.6 0.17 1.32 0.22 2 *Drift considered in scaling factor *Pictures of the test position are presented in appendix A 11 (21) _________________________________________________________________________________________

APPENDIX A: PHOTOS OF THE DUT DUT from front side: TOP LEFT SIDE RIGHT SIDE BOTTOM DUT from back side: TOP BOTTOM 12 (21) _________________________________________________________________________________________

Front towards the phantom: Back towards the phantom: 13 (21) _________________________________________________________________________________________

Right side towards the phantom: Left side towards the phantom: 14 (21) _________________________________________________________________________________________

Top towards the phantom: Bottom towards the phantom: 15 (21) _________________________________________________________________________________________

APPENDIX B: SYSTEM CHECK SCAN Plot 1 16 (21) _________________________________________________________________________________________

APPENDIX C: MEASUREMENT SCAN Plot 2 17 (21) _________________________________________________________________________________________

APPENDIX D: RELEVANT PAGES FROM PROBE CALIBRATION REPORTS 18 (21) _________________________________________________________________________________________

19 (21) _________________________________________________________________________________________

APPENDIX E: RELEVANT PAGES FROM DIPOLE CALIBRATION REPORTS 20 (21) _________________________________________________________________________________________

21 (21) _________________________________________________________________________________________


Document Created: 2017-04-07 10:29:23
Document Modified: 2017-04-07 10:29:23
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