Test Report Revised

FCC ID: PH29433

Test Report

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FCCID_1373548

W66 N220 Commerce Court ● Cedarburg, WI 53012 Phone: 262.375.4400 ● Fax: 262.375.4248 www.lsr.com TEST REPORT #: C-986 LSR Job #: 310250 Compliance Testing of: 2.4 GHz Transmitter Test Date(s): September 8th-20th, 2010 Prepared For: DexCom, Inc. Attn: Shawn Larvenz 6340 Sequence Drive San Diego, CA 92121 In accordance with: Federal Communications Commission (FCC) Part 15, Subpart C, Section 15.249 Industry Canada (IC) RSS 210 Annex 2 Transmitters Operating in the Frequency Band 2400 – 2483.5 MHz This Test Report is issued under the Authority of: Thomas T. Smith, Manager EMC Test Services Signature: Date: 10/29/2010 Quality Assurance by: Tested by: Thomas T. Smith, Manager EMC Test Services Shane D. Rismeyer, EMC Engineer Signature: Date: 10/29/2010 Signature: Date: 10/8/10 This Test Report may not be reproduced, except in full, without written approval of LS Research, LLC.

TABLE OF CONTENTS TABLE OF CONTENTS .................................................................................................................... 2 EXHIBIT 1. INTRODUCTION ........................................................................................................... 4 1.1 - Scope............................................................................................................................................................... 4 1.2 - Normative References ............................................................................................................................ 4 1.3 - LS Research, LLC in Review .............................................................................................................. 5 EXHIBIT 2. PERFORMANCE ASSESSMENT .............................................................................. 6 2.1 – Client Information ..................................................................................................................................... 6 2.2 – Equipment under Test (EUT) Information ................................................................................... 6 2.4 – EUT Technical Specifications................................................................................................................. 7 2.5 – Product Description ................................................................................................................................. 8 EXHIBIT 3. EUT OPERATING CONDITIONS AND CONFIGURATION .................................. 9 3.1 – Climate Conditions During Testing ................................................................................................. 9 3.2 – Applicability and Summary of EMC Emission Test Results............................................... 9 3.3 – Modifications Incorporated in the EUT for Compliance Purposes.................................. 9 3.4 – Deviations and Exclusions from Test Specifications ............................................................. 9 EXHIBIT 4. DECLARATION OF CONFORMITY ........................................................................ 10 EXHIBIT 5. RADIATED EMISSIONS TEST................................................................................. 11 5.1 - Test Setup ................................................................................................................................................... 11 5.2 - Test Procedure ......................................................................................................................................... 11 5.3 - Test Equipment Utilized ....................................................................................................................... 11 5.4 - Test Results ............................................................................................................................................... 11 5.5 – Calculation of Radiated Emissions Limits ................................................................................. 12 5.6 - Radiated Emissions Test Data Chart ........................................................................................... 13 5.7 - Test Setup Photo(s) – Radiated Emissions Test.................................................................... 15 5.8 - Screen Captures - Radiated Emissions Test............................................................................ 16 EXHIBIT 6. OCCUPIED BANDWIDTH ......................................................................................... 21 6.1 - Limits.............................................................................................................................................................. 21 6.2 - Method of Measurements ................................................................................................................... 21 6.3 - Test Data ..................................................................................................................................................... 21 6.4 - Screen Captures - Occupied Bandwidth..................................................................................... 22 EXHIBIT 7. BAND-EDGE MEASUREMENTS ............................................................................. 24 LS Research, LLC Page 2 of 29 Prepared For: DexCom, Inc. Model Number: 9438-01 Report #: 310250 EUT: 2.4 GHz Transmitter Serial Number: 60113 LSR Job #: C-986

7.1 - Method of Measurements ................................................................................................................... 24 APPENDIX A: Test Equipment ...................................................................................................... 26 APPENDIX B: Test Standards – Current Publication Dates Radio.......................................... 28 APPENDIX C: Uncertainty Statement........................................................................................... 29 LS Research, LLC Page 3 of 29 Prepared For: DexCom, Inc. Model Number: 9438-01 Report #: 310250 EUT: 2.4 GHz Transmitter Serial Number: 60113 LSR Job #: C-986

EXHIBIT 1. INTRODUCTION 1.1 - Scope References: FCC Part 15, Subpart C, Section 15.249 and 15.209 FCC Part 2, Section 2.1043 paragraph (b)1. RSS GEN and RSS 210 Annex 2 Title: FCC : Telecommunication – Code of Federal Regulations, CFR 47, Part 15. IC : Low-power License-exempt Radio-communication Devices (All Frequency Bands): Category I Equipment Purpose of Test: To gain FCC and IC Certification Authorization for Low- Power License-Exempt Transmitters. Test Procedures: Both conducted and radiated emissions measurements were conducted in accordance with American National Standards Institute ANSI C63.4 – 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. Environmental Classification:  Commercial, Industrial or Business  Residential 1.2 - Normative References Publication Title 47 CFR, Parts 0-15 (FCC) Code of Federal Regulations - Telecommunications RSS 210 Low-power License-exempt Radio-communication Devices (All Frequency Bands): Category I Equipment ANSI C63.4 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. CISPR 16-1-1 Specification for radio disturbance and immunity measuring apparatus and methods. Part 1-1: Measuring Apparatus. CISPR 16-2-1 Specification for radio disturbance and immunity measuring apparatus and methods. Part 201: Conducted disturbance measurement. LS Research, LLC Page 4 of 29 Prepared For: DexCom, Inc. Model Number: 9438-01 Report #: 310250 EUT: 2.4 GHz Transmitter Serial Number: 60113 LSR Job #: C-986

1.3 - LS Research, LLC in Review As an EMC Testing Laboratory, our Accreditation and Assessments are recognized through the following: A2LA – American Association for Laboratory Accreditation Accreditation based on ISO/IEC 17025: 2005 with Electrical (EMC) Scope of Accreditation A2LA Certificate Number: 1255.01 Federal Communications Commission (FCC) – USA Listing of 3 Meter Semi-Anechoic Chamber based on Title 47 CFR – Part 2.948 FCC Registration Number: 90756 Industry Canada On file, 3 Meter Semi-Anechoic Chamber based on RSS-212 – Issue 1 File Number: IC 3088-A On file, 3 and 10 Meter OATS based on RSS-212 – Issue 1 File Number: IC 3088 U. S. Conformity Assessment Body (CAB) Validation Validated by the European Commission as a U. S. Competent Body operating under the U. S./EU, Mutual Recognition Agreement (MRA) operating under the European Union Electromagnetic Compatibility –Council Directive 2004/108/EC (formerly 89/336/EEC, Article 10.2). Date of Validation: January 16, 2001 Validated by the European Commission as a U.S. Notified Body operating under the U.S. /EU, Mutual Recognition Agreement (MRA) operating under the European Union Telecommunication Equipment – Council Directive 99/5/EC, Annex V. Date of Validation: November 20, 2002 Notified Body Identification Number: 1243 LS Research, LLC Page 5 of 29 Prepared For: DexCom, Inc. Model Number: 9438-01 Report #: 310250 EUT: 2.4 GHz Transmitter Serial Number: 60113 LSR Job #: C-986

EXHIBIT 2. PERFORMANCE ASSESSMENT 2.1 – Client Information Manufacturer Name: DexCom, Inc. Address: 6340 Sequence Drive Contact Name: Shawn Larvenz 2.2 – Equipment under Test (EUT) Information The following information has been supplied by the applicant. Product Name: 2.4 GHz Transmitter Model Number: 9438-01 Serial Number: 60113 LS Research, LLC Page 6 of 29 Prepared For: DexCom, Inc. Model Number: 9438-01 Report #: 310250 EUT: 2.4 GHz Transmitter Serial Number: 60113 LSR Job #: C-986

2.4 – EUT Technical Specifications Additional Information: EUT Frequency Range (in MHz) 2424.9998 – 2477.2369 MHz RF Power in Watts 0.05mW Field Strength at 3 meters 93.6dBµV/m Occupied Bandwidth 4.955 MHz Type of Modulation MSK Emission Designator 440kG1D Transmitter Spurious (worst case) 60.540 Frequency Tolerance %, Hz, ppm < 20 ppm Stepped (Y/N) No Step Value: N/A Microprocessor Model # (if applicable) TI CC2510 Antenna Information Detachable/non-detachable Non-detachable Type Wideband Ceramic Chip Gain (in dBi) 2.1 dBi EUT will be operated under FCC Rule 15.249 Part(s) EUT will be operated under RSS Rule RSS 210 Part(s) Modular Filing Yes No Portable or Mobile? Portable RF Technical Information: Type of SAR Evaluation: Device Used in the Vicinity of the Human Head Evaluation SAR Evaluation: Body-worn Device (check one) X RF Evaluation If RF Evaluation checked above, test engineer to complete the following:  Evaluated against exposure limits: General Public Use Controlled Use  Duty Cycle used in evaluation: 100%  Standard used for evaluation: OET 65  Measurement Distance: 20 cm  RF Value: 0.000358 V/m A/m mW/cm2 Measured Computed Calculated LS Research, LLC Page 7 of 29 Prepared For: DexCom, Inc. Model Number: 9438-01 Report #: 310250 EUT: 2.4 GHz Transmitter Serial Number: 60113 LSR Job #: C-986

2.5 – Product Description The G4-Global Transmitter is part of DexCom’s G4-Global Continues Glucose Monitoring System. This system provides real-time continuous glucose readings every 5 minutes for up to 7 days. These readings will help the patient detect trends and patterns in your glucose levels. The System is made up of three technologies that all work together: the Sensor, the Transmitter, and the Receiver. The main purpose of this over view is to describe the G4-Global Transmitter which as mentioned is part of the system and its purpose is to transmit information from the Sensor to a Receiver. The G4-Global Transmitter uses radio frequency (RF) for the transmission of the sensor data to a receiver. The G4-Global Transmitter is re-usable for up to six months. It is powered by two internal is powered by two internal non-replaceable, non-rechargeable silver oxide batteries that will last for approximately six months when delivered to the patient. LS Research, LLC Page 8 of 29 Prepared For: DexCom, Inc. Model Number: 9438-01 Report #: 310250 EUT: 2.4 GHz Transmitter Serial Number: 60113 LSR Job #: C-986

EXHIBIT 3. EUT OPERATING CONDITIONS AND CONFIGURATION 3.1 – Climate Conditions During Testing Temperature: 22°C Humidity: 35% Pressure: 745 mmHg 3.2 – Applicability and Summary of EMC Emission Test Results Compliance FCC and IC Paragraph Test Requirements (yes/no) FCC : 15.207 Power Line Conducted Emissions Measurements N/A IC : RSS GEN sect. 7.2.2 IC : RSS GEN section 20 dB Bandwidth Yes 4.6.1 FCC : 15.249(A) & 1.1310 Maximum Output Power Yes IC : RSS 210 A2.9 (a) FCC : 1.1307, 1.1310, 2.1091 & 2.1093 RF Exposure Limit Yes IC : RSS 102 FCC : 15.249(a) Transmitter harmonics Yes IC : RSS 210 A2.9(a) FCC : 15.249(d), 15.209 & 15.205 Transmitter Radiated Emissions Yes IC : RSS 210 A2.9(b), The digital circuit portion of the EUT has been tested and verified to comply with FCC Part 15, Subpart B, Class B Digital Devices (RSS GEN and RSS 210 of IC) and the associated Radio Receiver has also been tested and found to comply with Part 15, Subpart B – Radio Receivers (RSS GEN and RSS 210 of IC). The Receiver Test Report is available upon request. 3.3 – Modifications Incorporated in the EUT for Compliance Purposes None Yes (explain below) 3.4 – Deviations and Exclusions from Test Specifications None Yes (explain below) LS Research, LLC Page 9 of 29 Prepared For: DexCom, Inc. Model Number: 9438-01 Report #: 310250 EUT: 2.4 GHz Transmitter Serial Number: 60113 LSR Job #: C-986

EXHIBIT 4. DECLARATION OF CONFORMITY The EUT was found to MEET the requirements as described within the specification of FCC Title 47, CFR Part 15.249, and Industry Canada RSS-210, Annex 2.9. If some emissions are seen to be within 3 dB of their respective limits: As these levels are within the tolerances of the test equipment and site employed, there is a possibility that this unit, or a similar unit selected out of production may not meet the required limit specification if tested by another agency. LS Research, LLC certifies that the data contained herein was taken under conditions that meet or exceed the requirements of the test specifications. The results in this Test Report apply only to the item(s) tested on the above-specified dates. Any modifications made to the EUT subsequent to the indicated test date(s) will invalidate the data herein, and void this certification. LS Research, LLC Page 10 of 29 Prepared For: DexCom, Inc. Model Number: 9438-01 Report #: 310250 EUT: 2.4 GHz Transmitter Serial Number: 60113 LSR Job #: C-986

EXHIBIT 5. RADIATED EMISSIONS TEST 5.1 - Test Setup The test setup was assembled in accordance with Title 47, CFR FCC Part 15, RSS GEN and ANSI C63.4. The EUT was placed on an 80cm high non-conductive pedestal, centered on a flush mounted 2-meter diameter turntable inside a 3 meter Semi-Anechoic, FCC listed Chamber. The EUT was operated in continuously transmitting modulated mode using power as provided by a battery. The unit has the capability to operate on 3 channels, controllable using a laptop and programming board. The applicable limits apply at a 3 meter distance. Measurements above 4 GHz were performed at a 1.0 meter separation distance. The calculations to determine these limits are detailed in the following pages. Please refer to Appendix A for a complete list of test equipment. The test sample was operated on one of three standard channels: 2425 MHz, 2450 MHz and 2477 MHz to comply with FCC Part 15.35. 5.2 - Test Procedure Radiated RF measurements were performed on the EUT in a 3 meter Semi-Anechoic, FCC listed Chamber. The frequency range from 30 MHz to 25000 MHz was scanned and investigated. The radiated RF emission levels were manually noted at the various fixed degree settings of azimuth on the turntable and antenna height. The EUT was placed on a non-conductive pedestal in the 3 meter Semi-Anechoic Chamber, with the antenna mast placed such that the antenna was 3 meters from the EUT. A Biconical Antenna was used to measure emissions from 30 MHz to 300 MHz, and a Log Periodic Antenna was used to measure emissions from 300 MHz to 1000 MHz. A Double- Ridged Waveguide Horn Antenna was used from 1 GHz to 18 GHz. In the frequency range of 30 MHz to 4 GHz, the maximum radiated RF emissions were found by raising and lowering the antenna between 1 and 4 meters in height while for the range of 4 GHz to 10 GHz the antenna was raised and lowered between 1 and 1.8 meters in height. In addition, the polarity of the antenna was switched between horizontal and vertical polarity. The EUT was positioned in three orthogonal positions for the test. 5.3 - Test Equipment Utilized A list of the test equipment and antennas utilized for the Radiated Emissions test can be found in Appendix A. The EMI Receiver was operated with resolution bandwidths as prescribed in ANSI C63.4. 5.4 - Test Results The EUT was found to MEET the Radiated Emissions requirements of Title 47 CFR, FCC Part 15.249 and Canada RSS-210, Annex 2.9. The frequencies with significant RF signal strength were recorded and plotted as shown in the Data Charts and Graphs. LS Research, LLC Page 11 of 29 Prepared For: DexCom, Inc. Model Number: 9438-01 Report #: 310250 EUT: 2.4 GHz Transmitter Serial Number: 60113 LSR Job #: C-986

5.5 – Calculation of Radiated Emissions Limits Field Strength of Fundamental Frequencies: The fundamental emissions for an intentional radiator in the 2425-2477 MHz band, operating under FCC part 15.249 and RSS 210 A2.9 limits must have electric field strength of no greater than 50 mV/m, for the fundamental frequency, when measured at 3 meters, and harmonic field strength of no greater than 500 µV/m, when measured at 3 meters. Spurious emissions outside the 2425-2477 MHz band shall be attenuated by at least 50 dB below the level of the fundamental, or meet the limits expressed in FCC part 15.209 under general emission limits. Field Strength of Fundamental Frequencies is Limited to 50,000 µV/m, or 94 dBµV/m. Field Strength of Harmonic and Spurious Frequencies is Limited by FCC 15.249 a and d The harmonic limit of –50 dBc with respect to the fundamental limit would be: 94 dBµV/m – 50 dB = 44 dBµV/m, *with the exception of where FCC 15.209* allows for a higher limit to be used. 3 m Limit Frequency (MHz) 3 m Limit (V/m) (dBV/m) 902-928 50,000 94.0 30-88 ; 88-216 159 44.0 216-902 ; 928-960 500 46.0* 960-40,000 500 54.0* The following table depicts the general radiated emission limits obtained from Title 47 CFR, part 15.209a, for radiated emissions measurements, including restricted band limits as expressed in 47 CFR, part 15.205. 3 m Limit Frequency (MHz) 3 m Limit (V/m) (dBV/m) 30-88 100 40.0 88-216 150 43.5 216-960 200 46.0 960-40,000 500 54.0 Sample conversion from field strength µV/m to dBµV/m: dBµV/m = 20 log10 (3m limit) from 30 - 88 MHz for example: dBµV/m = 20 log10 (100) 40.0 dBµV/m = 20 log10 (100) For measurements made at 1 meter, a 9.5 dB correction may be been invoked. 960 MHz to 40,000 MHz 500 V/m or 54.0 dBV/m at 3 meters 54.0 + 9.5 = 63.5 dBV/m at 1 meter Note: Limits are conservatively rounded to the nearest tenth of a whole number. LS Research, LLC Page 12 of 29 Prepared For: DexCom, Inc. Model Number: 9438-01 Report #: 310250 EUT: 2.4 GHz Transmitter Serial Number: 60113 LSR Job #: C-986

5.6 - Radiated Emissions Test Data Chart Measurements of Electromagnetic Radiated Emissions Frequency Range Inspected: 30 MHz to 25000 MHz Manufacturer: DexCom, Inc. Date(s) of Test: 9/8/10 Project Engineer: Shane Rismeyer Voltage: 3VDC Operation Mode: CW Environmental Temperature: 230 C Conditions in the Relative Humidity: 34% Lab: Single Phase 120 VAC 3 Phase ___VAC EUT Power: Battery X Other: 3VDC 80cm non-conductive EUT Placement: X 10cm Spacers table EUT Test 3 Meter Semi-Anechoic X 3/10m OATS Location: FCC Listed Chamber Measurements: Pre-Compliance Preliminary X Final Detectors Used: X Peak X Quasi-Peak X Average The following table depicts the level of radiated fundamental: Frequency Antenna EUT Height Azimuth Peak QP Average Limit Margin (MHz) (m) (0° ‐ 360°) (dBuV/m) (dBuV/m) (dBuV/m) (dBuV/m) (dB) H V 1.06 0 81.0 80.8 80.6 125.2 44.6 V V 1.46 67 85.7 85.6 85.4 125.2 39.8 V S 1.00 106 83.5 83.3 83.2 125.2 42.0 2425 H S 1.06 0 90.2 90.1 90.0 125.2 35.2 H F 1.15 87 90.8 90.7 90.7 125.2 34.5 V F 1.02 0 82.9 82.7 82.5 125.2 42.7 H V 1.00 0 82.4 82.2 82.0 125.2 43.2 V V 1.15 130 90.3 90.2 90.1 125.2 35.1 V S 1.23 82 84.5 84.4 84.2 125.2 41.0 2450 H S 1.07 3960 91.6 91.5 91.4 125.2 33.8 H F 1.45 82 92.4 92.3 92.2 125.2 33.0 V F 1.37 173 86.2 86.1 86.0 125.2 39.2 H V 1.06 348 80.5 80.3 80.0 125.2 45.2 V V 1.13 55 89.2 89.1 89.0 125.2 36.2 2475 V S 1.27 263 84.3 84.1 84.0 125.2 41.2 H S 1.07 329 92.81 92.75 92.72 125.2 32.5 H F 1.09 61 93.76 93.7 93.64 125.2 31.6 V F 1.25 347 83.65 83.47 83.29 125.2 41.9 LS Research, LLC Page 13 of 29 Prepared For: DexCom, Inc. Model Number: 9438-01 Report #: 310250 EUT: 2.4 GHz Transmitter Serial Number: 60113 LSR Job #: C-986

Radiated Emissions Data Chart (continued) The following table depicts the level of harmonic emissions seen on the low channel: Frequency Ant./EUT Height Azimuth Avg EFI Limit Margin (MHz) Polarity (cm) (degrees) (dBV/m) (dBV/m) (dB) 9700.0 H/V 102.6 12.6 56.369 63.5 7.13 9700.0 V/V 102.9 245.5 52.202 63.5 11.30 4850.0 V/V 107.5 56.9 47.114 63.5 16.39 9699.9 V/S 115.1 38.7 60.540 63.5 2.96 9699.9 H/S 117.7 309.1 49.637 63.5 13.86 4850.2 H/S 103.0 34.4 48.909 63.5 14.59 7275.3 H/S 123.8 38.0 43.896 63.5 19.60 9700.0 H/F 102.6 12.6 56.369 63.5 7.13 9700.0 V/F 102.9 245.5 52.202 63.5 11.30 4850.0 V/F 107.5 56.9 47.114 63.5 16.39 The following table depicts the level of harmonic emissions seen on middle channel: Frequency Ant./EUT Height Azimuth Avg EFI Limit Margin (MHz) Polarity (cm) (degrees) (dBV/m) (dBV/m) (dB) 9799.9 V/V 100.0 243.9 52.338 63.5 11.16 9799.9 H/V 99.7 5.7 57.962 63.5 5.54 9800.1 H/S 102.5 172.2 52.835 63.5 10.67 4899.9 H/S 99.7 345.1 46.055 63.5 17.45 9799.9 V/S 109.4 37.9 59.732 63.5 3.77 4900.0 V/S 99.1 7.5 48.196 63.5 15.30 9799.9 H/F 117.7 308.0 53.361 63.5 10.14 9800.1 V/F 124.6 293.2 50.274 63.5 13.23 The following table depicts the level of harmonic emissions seen on high channel: Frequency Ant./EUT Height Azimuth Avg EFI Limit Margin (MHz) Polarity (cm) (degrees) (dBV/m) (dBV/m) (dB) 9909.1 H/V 103.0 8.5 54.268 63.5 9.23 9908.9 H/V 106.0 257.6 49.775 63.5 13.73 9909.1 V/S 106.5 34.7 56.149 63.5 7.35 4954.5 V/S 124.2 99.7 39.992 63.5 23.51 9909.0 H/S 102.7 139.6 51.929 63.5 11.57 4954.5 H/S 120.9 72.4 44.785 63.5 18.72 9909.2 H/F 111.6 48.8 52.107 63.5 11.39 9908.9 V/F 122.5 220.7 45.977 63.5 17.52 Notes: 1) A Peak Detector was used in measurements above 1 GHz, for average measurement, the peak detector was used with lower VBW. The peak detector was used to ensure the peak emissions did not exceed 20 dB above the limits. 2) Measurements above 4 GHz were made at 1 meter of separation from the EUT. 3) All other measurements not appearing in the table were greater than 20dB from the limit. LS Research, LLC Page 14 of 29 Prepared For: DexCom, Inc. Model Number: 9438-01 Report #: 310250 EUT: 2.4 GHz Transmitter Serial Number: 60113 LSR Job #: C-986

5.7 - Test Setup Photo(s) – Radiated Emissions Test LS Research, LLC Page 15 of 29 Prepared For: DexCom, Inc. Model Number: 9438-01 Report #: 310250 EUT: 2.4 GHz Transmitter Serial Number: 60113 LSR Job #: C-986

5.8 - Screen Captures - Radiated Emissions Test These screen captures represent Peak Emissions. For radiated emission measurements, a Quasi-Peak detector function is utilized when measuring frequencies below 1 GHz, and a peak detector with video averaging is utilized when measuring frequencies above 1 GHz. Antenna Vertically Polarized, 30-300 MHz, at 3m Antenna Horizontally Polarized, 30-300 MHz, at 3m LS Research, LLC Page 16 of 29 Prepared For: DexCom, Inc. Model Number: 9438-01 Report #: 310250 EUT: 2.4 GHz Transmitter Serial Number: 60113 LSR Job #: C-986

Screen Captures - Radiated Emissions Testing (continued) Antenna Vertically Polarized, 300-1000 MHz, at 3m Antenna Horizontally Polarized, 300-1000 MHz, at 3m LS Research, LLC Page 17 of 29 Prepared For: DexCom, Inc. Model Number: 9438-01 Report #: 310250 EUT: 2.4 GHz Transmitter Serial Number: 60113 LSR Job #: C-986

Screen Captures - Radiated Emissions Testing (continued) Antenna Vertically Polarized, 1000 to 2300 MHz, at 3m Antenna Horizontally Polarized, 2300 to 2400 MHz, at 3m LS Research, LLC Page 18 of 29 Prepared For: DexCom, Inc. Model Number: 9438-01 Report #: 310250 EUT: 2.4 GHz Transmitter Serial Number: 60113 LSR Job #: C-986

Screen Captures - Radiated Emissions Testing (continued) Antenna Vertically Polarized, 2483.5 MHz to 2500 MHz, at 3m Antenna Vertically Polarized, 2500-4000 MHz, at 3m LS Research, LLC Page 19 of 29 Prepared For: DexCom, Inc. Model Number: 9438-01 Report #: 310250 EUT: 2.4 GHz Transmitter Serial Number: 60113 LSR Job #: C-986

Antenna Vertically Polarized, 4000-18000 MHz, at 1m Antenna Vertically Polarized, 18000-25000 MHz, at 1m LS Research, LLC Page 20 of 29 Prepared For: DexCom, Inc. Model Number: 9438-01 Report #: 310250 EUT: 2.4 GHz Transmitter Serial Number: 60113 LSR Job #: C-986

EXHIBIT 6. OCCUPIED BANDWIDTH 6.1 - Limits There are no limits specified. The occupied bandwidth need only be reported. 6.2 - Method of Measurements For this portion of the tests, a direct measurement of the transmitted signal was performed at the antenna port of the EUT, via a cable connection to the Agilent E4446A spectrum analyzer. An attenuator was placed in series with the cable to protect the spectrum analyzer. The loss from the cable and the attenuator were added on the analyzer as gain offset settings, thereby allowing direct measurements, without the need for any further corrections. The resolution bandwidth set to 100 kHz for this portion of the tests. The EUT was configured to run in a continuous transmit mode and the spectrum analyzer was used in peak-hold mode while measurements were made, as presented in the chart below. 6.3 - Test Data Center Measured Frequency -20 dBc OB (MHz) (kHz) 2425 425 2450 440 2477 420 LS Research, LLC Page 21 of 29 Prepared For: DexCom, Inc. Model Number: 9438-01 Report #: 310250 EUT: 2.4 GHz Transmitter Serial Number: 60113 LSR Job #: C-986

6.4 - Screen Captures - Occupied Bandwidth Low channel Occupied Bandwidth Middle channel Occupied Bandwidth LS Research, LLC Page 22 of 29 Prepared For: DexCom, Inc. Model Number: 9438-01 Report #: 310250 EUT: 2.4 GHz Transmitter Serial Number: 60113 LSR Job #: C-986

High channel Occupied Bandwidth LS Research, LLC Page 23 of 29 Prepared For: DexCom, Inc. Model Number: 9438-01 Report #: 310250 EUT: 2.4 GHz Transmitter Serial Number: 60113 LSR Job #: C-986

EXHIBIT 7. BAND-EDGE MEASUREMENTS 7.1 - Method of Measurements FCC 15.209(b) and 15.249(d) require a measurement of spurious emission levels to be at least 20 dB lower than the fundamental emission level, in particular at the Band-Edges where the intentional radiator operates. Also, RSS 210 Section 2.2 requires that unwanted emissions meet limits listed in tables 2 and 3 of the same standard and also to the limits in the applicable annex. The following screen captures demonstrate compliance of the intentional radiator at the 2400-2483.5 MHz Band- Edges. The EUT was operated in continuous transmit mode. The EUT was operated at the lowest channel for the investigation of the lower Band-Edge (2425 MHz), and at the highest channel for the investigation of the higher Band-Edge (2477 MHz). Screen Capture Demonstrating Compliance at the Band-Edges Lower Band Edge LS Research, LLC Page 24 of 29 Prepared For: DexCom, Inc. Model Number: 9438-01 Report #: 310250 EUT: 2.4 GHz Transmitter Serial Number: 60113 LSR Job #: C-986

Upper Band Edge LS Research, LLC Page 25 of 29 Prepared For: DexCom, Inc. Model Number: 9438-01 Report #: 310250 EUT: 2.4 GHz Transmitter Serial Number: 60113 LSR Job #: C-986

APPENDIX A: Test Equipment LS Research, LLC Page 26 of 29 Prepared For: DexCom, Inc. Model Number: 9438-01 Report #: 310250 EUT: 2.4 GHz Transmitter Serial Number: 60113 LSR Job #: C-986

LS Research, LLC Page 27 of 29 Prepared For: DexCom, Inc. Model Number: 9438-01 Report #: 310250 EUT: 2.4 GHz Transmitter Serial Number: 60113 LSR Job #: C-986

APPENDIX B: Test Standards – Current Publication Dates Radio STANDARD # DATE Am. 1 Am. 2 STANDARD # DATE Am. 1 Am. 2 ANSI C63.4 2009 IEC 61000-4-4 2004-07 2010-10 ANSI C63.10 2009 IEC 61000-4-5 2005-11 CISPR 11 2009-05 2009-12 P IEC 61000-4-6 2008-10 CISPR 12 2007-05 IEC 61000-4-8 2009-09 CISPR 14-1 2005-11 2008-11 IEC 61000-4-11 2004-03 CISPR 14-2 2001-11 2001-11 2008-05 IEC 61000-6-1 2005-03 CISPR 16-1-1 Note 1 2010-01 IEC 61326-1 2006-06 CISPR 16-1-2 Note 1 2003 2004-04 2006-07 ISO 14982 1998-07 CISPR 22 2008-09 MIL Std. 461E 1999-08 CISPR 24 1997-09 2001-07 2002-10 RSS GEN 2007-06 EN 55011 2007-05 RSS 119 2007-06 EN 55014-1 2006 RSS 123 1999-11 EN 55014-2 1997 RSS 125 2000-03 EN 55022 2006 2007 RSS 131 2003-07 EN 60601-1-2 2007-03 RSS 136 2002-10 EN 61000-3-2 2006-05 RSS 137 2009-02 EN 61000-3-3 2008-12 RSS 210 2007-06 EN 61000-4-2 2009-05 RSS 213 2005-12 EN 61000-4-3 2006-07 2008-05 RSS 243 2005-11 EN 61000-4-4 2004 RSS 310 2007-06 EN 61000-4-5 2006-12 EN 61000-4-6 2009-05 EN 61000-4-8 1994 2001 EN 61000-4-11 2004-10 EN 61000-6-1 2007-02 EN 61000-6-2 2005-12 EN 61000-6-3 2007-02 EN 61000-6-4 2007-02 FCC 47 CFR, Parts 0-15, 18, 2009 90, 95 FCC Public Notice DA 00-1407 2000 FCC ET Docket # 99-231 2002 FCC Procedures 2007 ICES 001 2006-06 ICES 002 2009-08 ICES 003 2004-02 IEC 60601-1-2 Note 1 2007-03 IEC 61000-3-2 2005-11 2008-03 2009-02 IEC 61000-3-3 2008-06 IEC 61000-4-2 2008-12 incl in 2008- 2009-12 IEC 61000-4-3 2008-04 04 FD Note 1: Test not on LSR Scope of Accreditation. Updated on 02-03-10 P=Project FD= Final Draft LS Research, LLC Page 28 of 29 Prepared For: DexCom, Inc. Model Number: 9438-01 Report #: 310250 EUT: 2.4 GHz Transmitter Serial Number: 60113 LSR Job #: C-986

APPENDIX C: Uncertainty Statement This uncertainty represents an expanded uncertainty expressed at approximately the 95 % confidence level, using a coverage factor of k=2. Table of Expanded Uncertainty Values, (K=2) for Specified Measurements Measurement Type Particular Configuration Uncertainty Values Radiated Emissions 3 – Meter chamber, Biconical 4.24 dB Antenna Radiated Emissions 3-Meter Chamber, Log 4.8 dB Periodic Antenna Radiated Emissions 10-Meter OATS, Biconical 4.18 dB Antenna Radiated Emissions 10-Meter OATS, Log 3.92 dB Periodic Antenna Conducted Emissions Shielded Room/EMCO LISN 1.60 dB Radiated Immunity 3 Volts/Meter in 3-Meter 1.128 Volts/Meter Chamber Conducted Immunity 3 Volts level 1.0 V LS Research, LLC Page 29 of 29 Prepared For: DexCom, Inc. Model Number: 9438-01 Report #: 310250 EUT: 2.4 GHz Transmitter Serial Number: 60113 LSR Job #: C-986


Document Created: 2010-11-09 11:47:41
Document Modified: 2010-11-09 11:47:41
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