Test Report

FCC ID: XRAFB201A

Test Report

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FCCID_1730125

FCC PART 15 SUBPART C IC RSS-210, ISSUE 8, DECEMBER 2010 TEST AND MEASUREMENT REPORT For Fitbit, Inc. 625 Market Street, Suite 1400, San Francisco, CA 94105, USA FCC ID: XRAFB201A IC: 8542A-0000F201A Report Type: Product Type: Original Report Wi-Fi Weight Scale Prepared By: Lionel Lara Report Number: R1203123-247 Report Date: 2012-06-18 Victor Zhang Reviewed By: EMC/RF Lead Bay Area Compliance Laboratories Corp. 1274 Anvilwood Avenue, Sunnyvale, CA 94089, USA Tel: (408) 732-9162 Fax: (408) 732-9164 Note: This test report is prepared for the customer shown above and for the device described herein. It may not be duplicated or used in part without prior written consent from Bay Area Compliance Laboratories Corp. This report must not be used by the customer to claim product certification, approval, or endorsement by A2LA* or any agency of the Federal Government. * This report may contain data that are not covered by the A2LA accreditation and are marked with an asterisk “*” (Rev.3)

Fitbit, Inc. FCC ID: XRAFB201A, IC: 8542A-0000F201A TABLE OF CONTENTS 1 General Description .................................................................................................................................................... 5 1.1 Product Description for Equipment Under Test (EUT) ....................................................................................... 5 1.2 Mechanical Description of EUT .......................................................................................................................... 5 1.3 Objective.............................................................................................................................................................. 5 1.4 Related Submittal(s)/Grant(s) .............................................................................................................................. 5 1.5 Test Methodology................................................................................................................................................ 5 1.6 Measurement Uncertainty.................................................................................................................................... 5 1.7 Test Facility ......................................................................................................................................................... 6 2 System Test Configuration ......................................................................................................................................... 7 2.1 Justification.......................................................................................................................................................... 7 2.2 EUT Exercise Software ....................................................................................................................................... 7 2.3 Special Equipment............................................................................................................................................... 7 2.4 Equipment Modifications .................................................................................................................................... 7 2.5 Local Support Equipment .................................................................................................................................... 7 2.6 Power Supply List and Details............................................................................................................................. 7 2.7 EUT Internal Configurations ............................................................................................................................... 7 2.8 External I/O Cabling List and AC Cord .............................................................................................................. 7 3 Summary of Test Results ............................................................................................................................................ 8 4 FCC §15.247 (i), §2.1091 & IC RSS-102 - RF Exposure .......................................................................................... 9 4.1 Applicable Standard ............................................................................................................................................ 9 4.2 MPE Prediction.................................................................................................................................................. 10 4.3 MPE Results ...................................................................................................................................................... 10 5 FCC §15.203 & IC RSS-Gen §7.1.2 – Antenna Requirements ................................................................................ 11 5.1 Applicable Standard .......................................................................................................................................... 11 5.2 Antenna Connector Construction....................................................................................................................... 11 6 FCC §15.205, §15.209, §15.247(d) & IC RSS-210 §2.2, §A8.5 - Spurious Radiated Emissions ............................ 12 6.1 Applicable Standard .......................................................................................................................................... 12 6.2 Test Setup .......................................................................................................................................................... 13 6.3 Test Procedure ................................................................................................................................................... 13 6.4 Corrected Amplitude & Margin Calculation ..................................................................................................... 14 6.5 Test Equipment List and Details........................................................................................................................ 14 6.6 Test Environmental Conditions ......................................................................................................................... 14 6.7 Summary of Test Results................................................................................................................................... 15 6.8 Radiated Emissions Test Data and Plots............................................................................................................ 16 7 IC RSS-210 §2.3 & RSS-Gen §6.1 - Receiver Spurious Radiated Emissions ......................................................... 18 7.1 Applicable Standard .......................................................................................................................................... 18 7.2 EUT Setup ......................................................................................................................................................... 18 7.3 Test Procedure ................................................................................................................................................... 18 7.4 Corrected Amplitude & Margin Calculation ..................................................................................................... 18 7.5 Test Equipment Lists and Details ...................................................................................................................... 19 7.6 Test Environmental Conditions ......................................................................................................................... 19 7.7 Summary of Test Results................................................................................................................................... 19 7.8 Radiated Emissions Test Data and Plots............................................................................................................ 20 8 Exhibit A – FCC & IC Equipment Labeling Requirements.................................................................................... 21 8.1 FCC ID Label Requirements ............................................................................................................................. 21 8.2 IC Label Requirements ...................................................................................................................................... 21 8.3 FCC ID & IC Label Contents ............................................................................................................................ 22 8.4 FCC ID and IC Label Location on EUT............................................................................................................ 22 9 Exhibit B - Test Setup Photographs........................................................................................................................... 23 Report Number: R1203123-247 Page 2 of 27 FCC Part 15C/IC RSS-210 Test Report

Fitbit, Inc. FCC ID: XRAFB201A, IC: 8542A-0000F201A 9.1 Radiated Emission Front View @ 3 Meter........................................................................................................ 23 9.2 Radiated Emission below 1 GHz Rear View @ 3 Meter................................................................................... 23 9.3 Radiated Emission above 1 GHz Rear View @ 3 Meter ................................................................................... 24 10 Exhibit C - EUT Photographs .................................................................................................................................... 25 10.1 EUT Front Side View ........................................................................................................................................ 25 10.2 EUT Back Side View ........................................................................................................................................ 25 10.3 EUT Open View ................................................................................................................................................ 26 10.4 PCB Top View................................................................................................................................................... 26 10.5 PCB Bottom View ............................................................................................................................................. 27 10.6 Built in Module Close up View ......................................................................................................................... 27 Report Number: R1203123-247 Page 3 of 27 FCC Part 15C/IC RSS-210 Test Report

Fitbit, Inc. FCC ID: XRAFB201A, IC: 8542A-0000F201A DOCUMENT REVISION HISTORY Revision Number Report Number Description of Revision Date of Revision 0 R1203123-247 Original Report 2012-06-18 Report Number: R1203123-247 Page 4 of 27 FCC Part 15C/IC RSS-210 Test Report

Fitbit, Inc. FCC ID: XRAFB201A, IC: 8542A-0000F201A 1 General Description 1.1 Product Description for Equipment Under Test (EUT) This test and measurement report was prepared on behalf of Fitbit Inc., and their product, FCC ID: XRAFB201A,IC: 8542A-F201A, model: FB201W, which will henceforth be referred to as the EUT (Equipment Under Test). The EUT is an 802.11 b Wireless Weight Scale with backlit display. It is powered by 4 standard 1.5V AA type batteries. 1.2 Mechanical Description of EUT The “EUT” measures 312 mm (L) x 312 mm (W) x 33.4 mm (H), weighing approximately 1.93 kg. The test data gathered are from typical production sample provided by the client. Serial Number: R1203123-2 assigned by BACL 1.3 Objective This report is prepared on behalf of Fitbit, Inc. in accordance with Part 2, Subpart J, and Part 15, Subparts B and C of the Federal Communication Commissions rules and IC RSS-210, Issue 8, Dec 2010. The objective is to determine compliance with FCC Part 15.247 and IC RSS-210 rules for Radiated Spurious Emissions. 1.4 Related Submittal(s)/Grant(s) No Related Submittals. 1.5 Test Methodology All measurements contained in this report were conducted in accordance with ANSI C63.4-2009, American National Standard for Methods of Measurement of Radio-Noise Emissions from Low-Voltage Electrical and Electronic Equipment in the range of 9 kHz to 40 GHz. 1.6 Measurement Uncertainty All measurements involve certain levels of uncertainties, especially in the field of EMC. The factors contributing to uncertainties are spectrum analyzer, cable loss, antenna factor calibration, antenna directivity, antenna factor variation with height, antenna phase center variation, antenna factor frequency interpolation, measurement distance variation, site imperfections, mismatch (average), and system repeatability. Based on CISPR16-4-2:2003, The Treatment of Uncertainty in EMC Measurements, the values ranging from +2.0 dB for Conducted Emissions tests and +4.0 dB for Radiated Emissions tests are the most accurate estimates pertaining to uncertainty of EMC measurements at BACL Corp. Report Number: R1203123-247 Page 5 of 27 FCC Part 15C/IC RSS-210 Test Report

Fitbit, Inc. FCC ID: XRAFB201A, IC: 8542A-0000F201A 1.7 Test Facility The test site used by BACL Corp. to collect radiated and conducted emissions measurement data is located at its facility in Sunnyvale, California, USA. The test site at BACL Corp. has been fully described in reports submitted to the Federal Communication Commission (FCC) and Voluntary Control Council for Interference (VCCI). The details of these reports have been found to be in compliance with the requirements of Section 2.948 of the FCC Rules on February 11 and December 10, 1997, and Article 8 of the VCCI regulations on December 25, 1997. The test site also complies with the test methods and procedures set forth in CISPR 22:2008 §10.4 for measurements below 1 GHz and §10.6 for measurements above 1 GHz as well as ANSI C63.4-2003, ANSI C63.4-2009, TIA/EIA-603 & CISPR 24:2010. The Federal Communications Commission and Voluntary Control Council for Interference have the reports on file and they are listed under FCC registration number: 90464 and VCCI Registration No.: R-3729, C-4176, G- 469, and T-1206. The test site has been approved by the FCC and VCCI for public use and is listed in the FCC Public Access Link (PAL) database. Additionally, BACL Corp. is a National Institute of Standards and Technology (NIST) accredited laboratory under the National Voluntary Laboratory Accredited Program (Lab Code 200167-0). The current scope of accreditations can be found at http://ts.nist.gov/Standards/scopes/2001670.htm Report Number: R1203123-247 Page 6 of 27 FCC Part 15C/IC RSS-210 Test Report

Fitbit, Inc. FCC ID: XRAFB201A, IC: 8542A-0000F201A 2 System Test Configuration 2.1 Justification The EUT was configured for testing according to ANSI C63.4-2009. The EUT was tested in a testing mode to represent worst-case results during the final qualification test. The EUT had been tested with the following data rate settings (worst case): Frequency/Data Rate Radio Bandwidth Mode (MHz) Low CH Mid CH High CH (MHz/Mbps) (MHz/Mbps) (MHz) 802.11b 20 2412/11 2437/11 2462/11 2.2 EUT Exercise Software The test utility software used was provided by client and was verified to comply with the standard requirements being tested against. 2.3 Special Equipment N/A 2.4 Equipment Modifications No modifications were made to the EUT. 2.5 Local Support Equipment N/A 2.6 Power Supply List and Details N/A 2.7 EUT Internal Configurations Manufacturers Descriptions Models Serial Numbers Fitbit PCB Board 12-0009 300-0009DVT5 GainSpan Module GSE1011MEE 11410001TW 2.8 External I/O Cabling List and AC Cord N/A Report Number: R1203123-247 Page 7 of 27 FCC Part 15C/IC RSS-210 Test Report

Fitbit, Inc. FCC ID: XRAFB201A, IC: 8542A-0000F201A 3 Summary of Test Results Results reported relate only to the product tested. FCC & IC Rules Description of Test Results FCC §15.247(i), §2.1091 RF Exposure Compliant IC RSS-102 FCC §15.203 Antenna Requirement Compliant IC RSS-Gen §7.1.4 FCC §15.207(a) AC Line Conducted Emissions N/A¹ IC RSS-Gen §7.2.2 FCC §15.247(d) Spurious Emissions at Antenna Port N/A² IC RSS-210 §A8.5 FCC §15.205, §15.209, §15.247 Radiated Spurious Emissions Compliant IC RSS-210 §2.2, §A8.5 FCC §15.247(a)(2) IC RSS-210 §A8.2 6 dB Emission Bandwidth N/A² FCC §15.247(b)(3) Maximum Peak Output Power N/A² IC RSS-210 §A8.4 FCC §15.247(d) 100 kHz Bandwidth of Frequency Band Edge N/A² IC RSS-210 §A8.5 FCC §15.247(e) IC RSS-210 §A8.2(b) Power Spectral Density N/A² IC RSS-210 §2.3 Receiver Spurious Emission & RSS-Gen §6.1 Compliant Note 1: EUT is battery powered. Note 2: Please refer to FCC ID: YOPGS1011MEE for the conducted results. The only change is different antennas were used for this EUT. Report Number: R1203123-247 Page 8 of 27 FCC Part 15C/IC RSS-210 Test Report

Fitbit, Inc. FCC ID: XRAFB201A, IC: 8542A-0000F201A 4 FCC §15.247 (i), §2.1091 & IC RSS-102 - RF Exposure 4.1 Applicable Standard According to FCC §15.247(i) and §1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. Limits for General Population/Uncontrolled Exposure Electric Field Magnetic Field Frequency Range Power Density Averaging Time Strength Strength (MHz) (mW/cm2) (minutes) (V/m) (A/m) Limits for General Population/Uncontrolled Exposure 0.3-1.34 614 1.63 * (100) 30 2 1.34-30 824/f 2.19/f * (180/f ) 30 30-300 27.5 0.073 0.2 30 300-1500 / / f/1500 30 1500-100,000 / / 1.0 30 f = frequency in MHz * = Plane-wave equivalent power density Before equipment certification is granted, the procedure of IC RSS-102 must be followed concerning the exposure of humans to RF fields. According to IC RSS-102 Issue 2 section 4.1, RF limits used for general public will be applied to the EUT. Frequency Range Electric Field Magnetic Field Power Density Time Averaging (MHz) (V/m rms) (A/m rms) (W/m2) (min) 0.003 - 1 280 2.19 - 6 1 - 10 280 / f 2.19 / f - 6 10 - 30 28 2.19 / f - 6 30 – 300 28 0.073 2* 6 0.5 0.5 300 – 1 500 1.585 f 0.0042 f f / 150 6 1 500 – 15 000 61.4 0.163 10 6 15 000 – 150 000 61.4 0.163 10 616000 / f1.2 150 000- 300 000 0.158 f0.5 4.21 x 10 -4 f0.5 6.67 x 10-5 f 616000 / f1.2 Note: ƒ is frequency in MHz * = Power density limit is applicable at frequencies greater than 100 MHz Report Number: R1203123-247 Page 9 of 27 FCC Part 15C/IC RSS-210 Test Report

Fitbit, Inc. FCC ID: XRAFB201A, IC: 8542A-0000F201A 4.2 MPE Prediction Predication of MPE limit at a given distance, Equation from OET Bulletin 65, Edition 97-01 S = PG/4πR² Where: S = power density P = power input to antenna G = power gain of the antenna in the direction of interest relative to an isotropic radiator R = distance to the center of radiation of the antenna 4.3 MPE Results Maximum peak output power at antenna input terminal (dBm): 23.47 Maximum peak output power at antenna input terminal (mW): 222.33 Prediction distance (cm): 20 Prediction frequency (MHz): 2462 Maximum Antenna Gain, typical (dBi): 3.5 Maximum Antenna Gain (numeric): 2.24 Power density of prediction frequency at 20.0 cm (mW/cm2): 0.099 Power density of prediction frequency at 0.2 m (W/m2): 0.99 MPE limit for uncontrolled exposure at prediction frequency (mW/cm2): 1.0 MPE limit for uncontrolled exposure at prediction frequency (W/m2): 10 The device is compliant with the requirement MPE limit for uncontrolled exposure. The maximum power density at the distance of 20 cm is 0.099 mW/cm2 (0.99 W/m2).Limit is 1.0 mW/cm2 (10 W/m2). Report Number: R1203123-247 Page 10 of 27 FCC Part 15C/IC RSS-210 Test Report

Fitbit, Inc. FCC ID: XRAFB201A, IC: 8542A-0000F201A 5 FCC §15.203 & IC RSS-Gen §7.1.2 – Antenna Requirements 5.1 Applicable Standard According to FCC §15.203, an intentional radiator shall be designed to ensure that no antenna other than that furnished by the responsible party shall be used with the device. The use of a permanently attached antenna or of an antenna that uses a unique coupling to the intentional radiator shall be considered sufficient to comply with the provisions of this Section. The manufacturer may design the unit so that a broken antenna can be replaced by the user, but the use of a standard antenna jack or electrical connector is prohibited. And according to FCC §15.247 (b) (4), if transmitting antennas of directional gain greater than 6 dBi are used the power shall be reduced by the amount in dB that the directional gain of the antenna exceeds 6 dBi. According to IC RSS-Gen §7.1.2: Transmitter Antenna A transmitter can only be sold or operated with antennas with which it was certified. A transmitter may be certified with multiple antenna types. An antenna type comprises antennas having similar in-band and out-of- band radiation patterns. Testing shall be performed using the highest-gain antenna of each combination of transmitter and antenna type for which certification is being sought, with the transmitter output power set at the maximum level. Any antenna of the same type and having equal or lesser gain as an antenna that had been successfully tested for certification with the transmitter, will also be considered certified with the transmitter, and may be used and marketed with the transmitter. The manufacturer shall include with the application for certification a list of acceptable antenna types to be used with the transmitter. When a measurement at the antenna connector is used to determine RF output power, the effective gain of the device's antenna shall be stated, based on measurement or on data from the antenna manufacturer. Any antenna gain in excess of 6 dBi (6 dB above isotropic gain) shall be added to the measured RF output power before using the power limits specified in RSS-210 or RSS-310 for devices of RF output powers of 10 mW or less. For devices of output powers greater than 10 mW, except devices subject to RSS-210 Annex 8 (Frequency Hopping and Digital Modulation Systems Operating in the 902-928 MHz, 2400-2483.5 MHz, and 5725-5850 MHz Bands) or RSS-210 Annex 9 (Local Area Network Devices), the total antenna gain shall be added to the measured RF output power before using the specified power limits. For devices subject to RSS-210 Annex 8 or Annex 9, the antenna gain shall not be added. 5.2 Antenna Connector Construction The EUT has one Transmitter/Receiver integral antenna, The Transmitter antenna has a max gain of 3.5 dBi which fulfills the requirements of FCC §15.203 and IC RSS-Gen §7.1.2. Please refer to the EUT internal photos. Report Number: R1203123-247 Page 11 of 27 FCC Part 15C/IC RSS-210 Test Report

Fitbit, Inc. FCC ID: XRAFB201A, IC: 8542A-0000F201A 6 FCC §15.205, §15.209, §15.247(d) & IC RSS-210 §2.2, §A8.5 - Spurious Radiated Emissions 6.1 Applicable Standard As per FCC §15.35(d): Unless otherwise specified, on any frequency or frequencies above 1000 MHz, the radiated emission limits are based on the use of measurement instrumentation employing an average detector function. Unless otherwise specified, measurements above 1000 MHz shall be performed using a minimum resolution bandwidth of 1 MHz. As per FCC §15.209(a) and RSS-210: Except as provided elsewhere in this Subpart, the emissions from an intentional radiator shall not exceed the field strength levels specified in the following table Frequency Field Strength Measurement Distance (MHz) (micro volts/meter) (meters) 0.009 - 0.490 2400/F(kHz) 300 0.490 - 1.705 24000/F(kHz) 30 1.705 - 30.0 30 30 30 - 88 100** 3 88 - 216 150** 3 216 - 960 200** 3 Above 960 500 3 ** Except as provided in paragraph (g), fundamental emissions from intentional radiators operating under this Section shall not be located in the frequency bands 54-72 MHz, 76-88 MHz, 174-216 MHz or 470-806 MHz. However, operation within these frequency bands is permitted under other sections of this Part, e.g., Sections 15.231 and 15.241. As Per FCC §15.205(a) except as show in paragraph (d) of this section, only spurious emissions are permitted in any of the frequency bands listed below: MHz MHz MHz GHz 0.090 – 0.110 16.42 – 16.423 960 – 1240 4. 5 – 5. 15 0.495 – 0.505 16.69475 – 16.69525 1300 – 1427 5. 35 – 5. 46 2.1735 – 2.1905 25.5 – 25.67 1435 – 1626.5 7.25 – 7.75 4.125 – 4.128 37.5 – 38.25 1645.5 – 1646.5 8.025 – 8.5 4.17725 – 4.17775 73 – 74.6 1660 – 1710 9.0 – 9.2 4.20725 – 4.20775 74.8 – 75.2 1718.8 – 1722.2 9.3 – 9.5 6.215 – 6.218 108 – 121.94 2200 – 2300 10.6 – 12.7 6.26775 – 6.26825 123 – 138 2310 – 2390 13.25 – 13.4 6.31175 – 6.31225 149.9 – 150.05 2483.5 – 2500 14.47 – 14.5 8.291 – 8.294 156.52475 – 156.52525 2690 – 2900 15.35 – 16.2 8.362 – 8.366 156.7 – 156.9 3260 – 3267 17.7 – 21.4 8.37625 – 8.38675 162.0125 –167.17 3.332 – 3.339 22.01 – 23.12 8.41425 – 8.41475 167.72 – 173.2 3 3458 – 3 358 23.6 – 24.0 12.29 – 12.293 240 – 285 3.600 – 4.400 31.2 – 31.8 12.51975 – 12.52025 322 – 335.4 36.43 – 36.5 12.57675 – 12.57725 399.9 – 410 Above 38.6 13.36 – 13.41 608 – 614 Report Number: R1203123-247 Page 12 of 27 FCC Part 15C/IC RSS-210 Test Report

Fitbit, Inc. FCC ID: XRAFB201A, IC: 8542A-0000F201A As per FCC §15.247 (d) In any 100 kHz bandwidth outside the frequency band in which the spread spectrum or digitally modulated intentional radiator is operating, the radio frequency power that is produced by the intentional radiator shall be at least 20 dB below that in the 100 kHz bandwidth within the band that contains the highest level of the desired power, based on either an RF conducted or a radiated measurement, provided the transmitter demonstrates compliance with the peak conducted power limits. If the transmitter complies with the conducted power limits based on the use of RMS averaging over a time interval, as permitted under paragraph (b)(3) of this section, the attenuation required under this paragraph shall be 30 dB instead of 20 dB. Attenuation below the general limits specified in §15.209(a) is not required. In addition, radiated emissions which fall in the restricted bands, as defined in §15.205(a), must also comply with the radiated emission limits specified in §15.209(a) (see §15.205(c). As per IC RSS-210 §2.2, Emissions Falling within Restricted Frequency Bands: Category I licence-exempt equipment is required to comply with the provisions in RSS-Gen with respect to emissions falling within restricted frequency bands. These restricted frequency bands are listed in RSS-Gen. As per IC RSS-210 §A8.5, in any 100 kHz bandwidth outside the frequency band in which the spread spectrum or digitally modulated device is operating, the RF power that is produced shall be at least 20 dB below that in the 100 kHz bandwidth within the band that contains the highest level of the desired power, based on either an RF conducted or a radiated measurement, provided that the transmitter demonstrates compliance with the peak conducted power limits. If the transmitter complies with the conducted power limits based on the use of root-mean-square averaging over a time interval, as permitted under Section A8.4 (4), the attenuation required shall be 30 dB instead of 20 dB. Attenuation below the general field strength limits specified in RSS-Gen is not required. 6.2 Test Setup The radiated emissions tests were performed in the 5-meter Chamber, using the setup in accordance with ANSI C63.4-2009. The specification used was the FCC 15 Subpart C and IC RSS-210 limits. The spacing between the peripherals was 3 centimeters. External I/O cables were draped along the edge of the test table and bundle when necessary. 6.3 Test Procedure For the radiated emissions test, the EUT host, and all support equipment power cords was connected to the AC floor outlet. Maximizing procedure was performed on the highest emissions to ensure that the EUT complied with all installation combinations. The EUT is set 3 meter away from the testing antenna, which is varied from 1-4 meter, and the EUT is placed on a turntable, which is 0.8 meter above ground plane, the table shall be rotated for 360 degrees to find out the highest emission. The receiving antenna should be changed the polarization both of horizontal and vertical. The spectrum analyzer or receiver is set as: Below 1000 MHz: RBW = 100 kHz / VBW = 300 kHz / Sweep = Auto Above 1000 MHz: (1) Peak: RBW = 1MHz / VBW = 1MHz / Sweep = Auto (2) Average: RBW = 1MHz / VBW = 10Hz / Sweep = Auto Report Number: R1203123-247 Page 13 of 27 FCC Part 15C/IC RSS-210 Test Report

Fitbit, Inc. FCC ID: XRAFB201A, IC: 8542A-0000F201A 6.4 Corrected Amplitude & Margin Calculation The Corrected Amplitude (CA) is calculated by adding the Antenna Factor (AF), the Cable Loss (CL), the Attenuator Factor (Atten) and subtracting the Amplifier Gain (Ga) to indicated Amplitude (Ai) reading. The basic equation is as follows: CA = Ai + AF + CL + Atten – Ga For example, a corrected amplitude of 40.3 dBuV/m = Indicated Reading (32.5 dBuV) + Antenna Factor (+23.5dB) + Cable Loss (3.7 dB) + Attenuator (10 dB) - Amplifier Gain (29.4 dB) The “Margin” column of the following data tables indicates the degree of compliance within the applicable limit. For example, a margin of -7 dB means the emission is 7 dB below the maximum limit. The equation for margin calculation is as follows: Margin = Corrected Amplitude - Limit 6.5 Test Equipment List and Details Manufacturer Description Model No. Serial No. Calibration Date Rohde & Schwarz EMI Test Receiver ESCI 1166.5950K03 100337 2011-03-21 Agilent Spectrum Analyzer E4440A MY44303352 2011-05-10 Sunol Science Corp System Controller SC99V 113005-1 N/R Sunol Science Corp Combination Antenna JB3 A020106-2 2011-08-10 A.R.A Inc Horn antenna DRG-118/A 1132 2012-01-04 Hewlett Packard Pre amplifier 8447D 2944A06639 2011-06-09 Mini-Circuits Pre Amplifier ZVA-183-S 667400960 2011-05-08 Statement of Traceability: BACL attests that all calibrations have been performed per the NVLAP requirements, traceable to NIST. 6.6 Test Environmental Conditions Temperature: 21 °C Relative Humidity: 46 % ATM Pressure: 102.1kPa The testing was performed by Lionel Lara on 2012-03-16 in 5 meter chamber 3. Report Number: R1203123-247 Page 14 of 27 FCC Part 15C/IC RSS-210 Test Report

Fitbit, Inc. FCC ID: XRAFB201A, IC: 8542A-0000F201A 6.7 Summary of Test Results According to the data hereinafter, the EUT complied with the FCC Title 47, Part 15C and IC RSS-210 standard’s radiated emissions limits, and had the worst margin of: 30-1000 MHz: Mode: Transmitting Margin Frequency Polarization Mode, Channel, (dB) (MHz) (Horizontal/Vertical) Range 802.11b, Low, -13.83 33.32 Vertical 30-1000 MHz 1 – 25 GHz: Mode: Transmitting Margin Frequency Polarization Mode, Channel, (dB) (MHz) (Horizontal/Vertical) Range -8.86 2494.1 Horizontal 802.11b High, 1GHz – 25GHz Please refer to the following table and plots for specific test result details Report Number: R1203123-247 Page 15 of 27 FCC Part 15C/IC RSS-210 Test Report

Fitbit, Inc. FCC ID: XRAFB201A, IC: 8542A-0000F201A 6.8 Radiated Emissions Test Data and Plots 1) 30 MHz – 1 GHz, Measured at 3 meters Worst Channel: Low channel (2412 MHz) Quasi-Peak Measurements Corrected Antenna Antenna Turntable Frequency Limit Margin Amplitude Height Polarity Azimuth (MHz) (dBµV/m) (dB) (dBµV/m) (cm) (H/V) (degrees) 33.32 26.17 99 V 119 40 -13.83 34.774 10.27 104 H 249 40 -29.73 979.0025 19.28 246 H 196 54 -34.72 Report Number: R1203123-247 Page 16 of 27 FCC Part 15C/IC RSS-210 Test Report

Fitbit, Inc. FCC ID: XRAFB201A, IC: 8542A-0000F201A 2) 1–25 GHz, Measured at 3 meters 802.11b mode S.A. Turntable Test Antenna Cable Pre- Cord. FCC/IC Frequency Reading Azimuth Height Polarity Factor Loss Amp. Reading Limit Margin Comments (MHz) (dBµV) (degrees) (cm) (H/V) (dB/m) (dB) (dB) (dBµV/m) (dBµV/m) (dB) Low Channel 2412 MHz, measured at 3 meters 4824 40.94 177 120 V 32.88 4.06 27.71 50.17 74 -23.83 Peak 4824 31.07 177 120 V 32.88 4.06 27.71 40.30 54 -13.70 Ave -¹ - - - - - - - - - - - Middle Channel 2437 MHz, measured at 3 meters 4874 40.84 181 100 V 32.96 4.1 27.71 50.19 74 -23.81 Peak 4874 28.83 181 100 V 32.96 4.1 27.71 38.18 54 -15.82 Ave -¹ - - - - - - - - - - - High Channel 2462 MHz, measured at 3 meters 4924 40.46 176 100 V 32.96 4.1 27.71 49.81 74 -24.19 Peak 4924 29.55 176 100 V 32.96 4.1 27.71 38.90 54 -15.10 Ave -¹ - - - - - - - - - - - Note 1: All other spurious emissions at noise floor level. 3) Restricted Band Edge S.A. Turntable Test Antenna Cable Pre- Cord. FCC/IC Frequency Reading Azimuth Height Polarity Factor Loss Amp. Reading Limit Margin Comments (MHz) (dBµV) (degrees) (cm) (H/V) (dB/m) (dB) (dB) (dBµV/m) (dBµV/m) (dB) Low Channel 2412 MHz, measured at 3 meters 2362.4 27.91 193 135 V 27.79 2.94 0 58.64 74 -15.36 Peak 2369.7 27.38 78 189 H 27.68 2.94 0 58.00 74 -16.00 Peak 2362.4 14.15 193 135 V 27.79 2.94 0 44.88 54 -9.12 Ave 2369.7 14.14 78 189 H 27.68 2.94 0 44.76 54 -9.24 Ave High Channel 2462 MHz, measured at 3 meters 2487.3 27.64 348 100 V 24.48 3.01 0 55.13 74 -18.87 Peak 2494.1 27.13 79 193 H 28.39 3.01 0 58.53 74 -15.47 Peak 2487.3 13.73 348 100 V 24.48 3.01 0 41.22 54 -12.78 Ave 2494.1 13.74 79 193 H 28.39 3.01 0 45.14 54 -8.86 Ave Report Number: R1203123-247 Page 17 of 27 FCC Part 15C/IC RSS-210 Test Report

Fitbit, Inc. FCC ID: XRAFB201A, IC: 8542A-0000F201A 7 IC RSS-210 §2.3 & RSS-Gen §6.1 - Receiver Spurious Radiated Emissions 7.1 Applicable Standard According to IC RSS-Gen §6.1, radiated spurious emission measurements shall be performed with the receiver antenna connected to the receiver antenna terminals. Spurious emissions from receivers shall not exceed the radiated limits shown in the table below: Frequency Field Strength (MHz) (Microvolts/m at 3 metres)* 30-88 100 88-216 150 216-960 200 Above 960 500 * Measurements for compliance with limits in the above table may be performed at distance other than 3 metres, in accordance with section 7.2.7. 7.2 EUT Setup The radiated emissions tests were performed in the 3 meter chamber, using the setup in accordance with ANSI C63.4-2009. 7.3 Test Procedure Maximizing procedure was performed on the six (6) highest emissions to ensure EUT compliance is with all installation combinations. All data were recorded in the peak detection mode. Quasi-peak readings was performed only when an emissions was found to be marginal (within -4 dB of specification limits), and are distinguished with a "QP" in the data table. 7.4 Corrected Amplitude & Margin Calculation The Corrected Amplitude (CA) is calculated by adding the Antenna Factor (AF), the Cable Loss (CL), the Attenuator Factor (Atten) and subtracting the Amplifier Gain (Ga) to indicated Amplitude (Ai) reading. The basic equation is as follows: CA = Ai + AF + CL + Atten – Ga For example, a corrected amplitude of 40.3 dBuV/m = Indicated Reading (32.5 dBuV) + Antenna Factor (+23.5dB) + Cable Loss (3.7 dB) + Attenuator (10 dB) - Amplifier Gain (29.4 dB) The “Margin” column of the following data tables indicates the degree of compliance within the applicable limit. For example, a margin of -7 dB means the emission is 7 dB below the maximum limit. The equation for margin calculation is as follows: Margin = Corrected Amplitude - Limit Report Number: R1203123-247 Page 18 of 27 FCC Part 15C/IC RSS-210 Test Report

Fitbit, Inc. FCC ID: XRAFB201A, IC: 8542A-0000F201A 7.5 Test Equipment Lists and Details Manufacturer Description Model Number Serial Number Calibration Date Rohde & Schwarz EMI Test Receiver ESCI 1166.5950K03 100337 2011-03-21 Agilent Spectrum Analyzer E4440A MY44303352 2011-05-10 Sunol Science Corp System Controller SC99V 113005-1 N/R Sunol Science Corp Combination Antenna JB3 A020106-2 2011-08-10 A.R.A Inc Horn antenna DRG-118/A 1132 2012-01-04 Hewlett Packard Pre amplifier 8447D 2944A06639 2011-06-09 Mini-Circuits Pre Amplifier ZVA-183-S 667400960 2011-05-08 Statement of Traceability: BACL attests that all calibrations have been performed per the NVLAP requirements, traceable to NIST. 7.6 Test Environmental Conditions Temperature: 21 °C Relative Humidity: 46 % ATM Pressure: 102.1kPa The testing was performed by Lionel Lara on 2012-03-16 in 5 meter chamber 3. 7.7 Summary of Test Results According to the test data, the EUT complied with the with the RSS-210, with the closest margins from the limit listed below: Mode: Receiving Margin Frequency Polarization Range (dB) (MHz) (Horizontal/Vertical) (MHz) -17.60 33.331 Vertical 30 to 25000 Report Number: R1203123-247 Page 19 of 27 FCC Part 15C/IC RSS-210 Test Report

Fitbit, Inc. FCC ID: XRAFB201A, IC: 8542A-0000F201A 7.8 Radiated Emissions Test Data and Plots 1) 30-1000 MHz, Measured at 3 meters Quasi-Peak Measurements Corrected Antenna Antenna Turntable Frequency Limit Margin Amplitude Height Polarity Azimuth (MHz) (dBµV/m) (dB) (dBµV/m) (cm) (H/V) (degrees) 33.331 22.40 290 V 283 40 -17.60 947.8373 18.92 119 H 218 46 -27.08 34.40325 10.65 249 H 246 40 -29.35 43.0395 4.21 233 V 337 40 -35.79 2) Above 1 GHz Measured at 3 meters Corrected Antenna Antenna Turntable Frequency Limit Margin Amplitude Height Polarity Azimuth Comment (MHz) (dBµV/m) (dB) (dBµV/m) (cm) (H/V) (degrees) - - - - - - - Peak - - - - - - - Ave. Note: All Emissions are on/under noise floor level Report Number: R1203123-247 Page 20 of 27 FCC Part 15C/IC RSS-210 Test Report


Document Created: 2012-06-25 16:02:20
Document Modified: 2012-06-25 16:02:20
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