C3K1846Short Range Device

Model 1846 – Module Integration Instructions Module Installation This module will only be installed in Microsoft products and under the control of Microsoft. Installation will be done in accordance with the following conditions: Host device label (physical or, where allowed, electronic) will include: Contains FCC ID:C3K1846 Contains IC:3048A-1846 Following compliance statements required by FCC and ISED Canada for both digital device and transmitter will be included in the host manual. Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Any changes or modifications to this device not expressly approved by Microsoft could void the user’s authority to operate the device. Le fonctionnement est soumis aux conditions suivantes: (1) cet appareil ne peut pas causer d’interférences, et (2) cet appareil doit accepter toute interférence reçue, notamment celles pouvant entraîner un dysfonctionnement. Toute modification sur cet appareil n’étant pas expressément approuvée par Microsoft pourrait annuler le droit de l’utilisateur à se servir de cet appareil. The manual will also include the RF exposure warnings as shown below. To comply with rf exposure requirements this equipment should be installed and operated at a minimum of 20 cm from your body. Pour se conformer aux exigences relatives à l’exposition aux rf Cet équipement doit être installé et utilisé à une distance minimum de 20 cm de votre corps. The antennas to be used are limited to: The module is designed and tested to be used with the built-in antennas only. The builtin antennas cannot be replaced or augmented in any way without requiring additional authorization for operation. Portable host systems will be subject to C2PC (FCC) and C4PC (Canada) filings to address RF exposure for the specific host + module combination. Host systems will be evaluated against the requirements for Class A or Class B digital devices and approved using the relevant FCC and ISED procedures. Additional spot checks to verify compliance of host + module with 15.249 and RSS 210 as required by KDB 996369 D04 will be performed.

Microsoft Corporation is an equal opportunity employer. October 28 th , 2020 Federal Communications Commission 7435 Oakland Mills Road Columbia MD 21046 To whom it may concern: I, the undersigned, hereby authorize UL Verification Services Inc. to act on our behalf in all manners relating to application for equipment authorization, including signing of all documents relating to these matters. All acts carried out by UL Verification Services Inc. on our behalf shall have the same effect as acts of our own. I, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 853(a). In authorizing UL Verification Services Inc. as our representative, we still recognize that we are responsible to: a)Comply with the relevant provisions of the certification program; b)Make all necessary arrangements for the conduct of the evaluation, including provision for examining documentation and access to all areas, records (including internal audit reports) and personnel for the purposes of evaluation (e.g. testing, inspection, assessment, surveillance, reassessment) and resolution of complaints; c)Make claims regarding certification only in respect of the scope for which certification has been granted; d)Not use our product certification in such a manner as to bring the Certification Division into disrepute and not make any statement regarding our product certification which the Certification Division may consider misleading or unauthorized; Microsoft Corporation is an equal opportunity employer. e)Upon suspension or cancellation of certification, discontinue use of all advertising matter that contains any reference thereto and return any certification documents as required by the Certification Division; f)Use certification only to indicate that products are certified as being in conformity with specified standards; g)Endeavor to ensure that no certificate nor report nor any part thereof is used in a misleading manner; h)Ensure that any reference to our product certification in communication media such as documents, brochures or advertising, complies with the requirements of the Certification Division; i)Keep a record of all complaints made known to us relating to the product’s compliance with requirements of the relevant standard and to make these records available to the when requested; j)Take appropriate action with respect to such complaints and any deficiencies found in products or services that affect compliance with the requirements for certification; k)Document the actions taken. This authorization is valid until further written notice from the applicant. Sincerely, Chaitrali Limaye Compliance Engineer, Microsoft Corporation.

October 28 th , 2020 Federal Communications Commission 7435 Oakland Mills Road Columbia MD 21046 Subject: Request for Confidentiality for FCC ID: C3K1846 To Whom It May Concern: Pursuant to the provisions of the Commission’s rules 47 CFR sections 0.457(d) and 0.459, we are requesting the Commission to withhold the following attachments as confidential document from public disclosure indefinitely. •Block Diagram •Schematics •Operational Description (covers SW security document) The above-mentioned documents contain detailed system and equipment descriptions that are considered as proprietary information in the operation of the equipment. Public disclosure of the above documents might be harmful to our company and would give competitors an unfair advantage in the market. In additional to above mentioned documents, pursuant to Public Notice DA 04-1705 of the Commission’s policy, to comply with the marketing regulations in 47 CFR §2.803 and the importation rules in 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we are requesting the commission to grant short-term confidentiality on the following attachments until May 18th, 2021. Microsoft Corporation is an equal opportunity employer. Microsoft Corporation is an equal opportunity employer. •External Photos •Test Setup Photos •User’s Manual •Internal Photos It is our understanding that all measurement test reports, FCC ID label format and correspondence during certification review process cannot be granted as confidential documents and the information will be available for public review once the grant of equipment authorization is issued. Sincerely, Chaitrali Limaye Compliance Engineer, Microsoft Corporation.

Microsoft Corporation is an equal opportunity employer. Subject: Authorized signatories August 03, 2020 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, Maryland 21046 AGENCY AUTHORIZATION LETTER FOR MICROSOFT EMPLOYEES To whom it may concern, I, the undersigned hereby authorize the following, to act on my behalf, as the agent(s), in all matters relating to all processes for FCC equipment authorization for Microsoft® Corporation (Grantee Code: C3K). Hasnain Syed Anindita Mitra David Johnson Michael Boucher Kyle Chen Chaitrali Limaye Wei Sun Zachary Gray Daniel Salinas Vishwas Varadanahalli Narayan Albert Huang Mengni Yin Choon Sian Ooi Nisha Nandakumar Nawrin Islam Natasha If you have any questions regarding the authorization, please don’t hesitate to contact me. Sincerely, Hasnain Syed Sr. Director, EMC/SI & RF Compliance Microsoft Corporation Email: [email protected]

Applicant/Grantee Microsoft Corporation FCC ID: C3K1846 Section 15.212 Modular Transmitters Request for Modular Approval Request for Limited Modular Approval Requirements EUT Conditions Comply (Y/N) Single Modular Approval Requirements 1 The radio elements of the modular transmitter must have their own shielding. The physical crystal and tuning capacitors may be located external to the shielded radio elements. The radio portion of the module is contained in its own RF shielding. The shielding is installed at the factory. This is shown in the Internal Photos exhibit. Y 2 The modular transmitter must have buffered modulation/data inputs (if such inputs are provided) to ensure that the module will comply with Part 15 requirements under conditions of excessive data rates or over-modulation. The EUT has buffered data inputs to ensure compliance with Part 15 requirements under conditions of excessive data rates or over- modulation. Please see the Schematics exhibit. Y 3 The modular transmitter must have its own power supply regulation. The EUT has its own power supply regulation to ensure compliance with Part 15 requirements regardless of the quality or level of external DC supplying the module from the host unit. Y 4 The modular transmitter must comply with the antenna and transmission system requirements of Sections 15.203, 15.204(b) and 15.204(c). The antenna must either be permanently attached or employ a “unique” antenna coupler (at all connections between the module and the antenna, including the cable). The “professional installation” provision of Section 15.203 is not applicable to modules but can apply to limited modular approvals under paragraph (b) of this section. The EUT meets the FCC antenna requirements. Y 5 The modular transmitter must be tested in a stand-alone configuration, i.e ., the module must not be inside another device during testing for compliance with Part 15 requirements. Unless the transmitter module will be battery powered, it must comply with the AC line conducted requirements found in Section 15.207. AC or DC power lines and data input/output lines connected to the module must not contain ferrites, unless they will be marketed with the module (see Section 15.27(a)). The length of these lines shall be the length typical of actual use or, if that length is unknown, at least 10 centimeters to The EUT was tested in a stand-alone configuration. Y insure that there is no coupling between the case of the module and supporting equipment. Any accessories, peripherals, or support equipment connected to the module during testing shall be unmodified and commercially available (see Section 15.31(i)). 6 The modular transmitter must be equipped with either a permanently affixed label or must be capable of electronically displaying its FCC identification number. (A) If using a permanently affixed label, the modular transmitter must be labeled with its own FCC identification number, and, if the FCC identification number is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. This exterior label can use wording such as the following: “Contains Transmitter Module FCC ID: XYZMODEL1” or “Contains FCC ID: XYZMODEL1.” Any similar wording that expresses the same meaning may be used. The Grantee may either provide such a label, an example of which must be included in the application for equipment authorization, or, must provide adequate instructions along with the module which explain this requirement. In the latter case, a copy of these instructions must be included in the application for equipment authorization. (B) If the modular transmitter uses an electronic display of the FCC identification number, the information must be readily accessible and visible on the modular transmitter or on the device in which it is installed. If the module is installed inside another device, then the outside of the device into which the module is installed must display a label referring to the enclosed module. This exterior label can use wording such as the following: “Contains FCC certified transmitter module(s).” Any similar wording that expresses the same meaning may be used. The user manual must include instructions on how to access the electronic display. A copy of these instructions must be included in the application for equipment authorization. The EUT is labeled with its own FCC ID. Please see FCC ID label exhibit. Since the FCC ID number is not visible when the module is installed inside the host device, another label with the module FCC ID will be applied to the exterior of the host device. Y 7 The modular transmitter must comply with any specific rules or operating requirements that ordinarily apply to a complete transmitter and the manufacturer must provide adequate instructions along with the module to explain any such requirements. A copy of these The EUT is compliant with all applicable FCC rules. Detailed instructions for maintaining compliance are given in the Installation Manual. Y instructions must be included in the application for equipment authorization. 8 The modular transmitter must comply with any applicable RF exposure requirements in its final configuration. The EUT is compliant with all applicable RF exposure requirements. Please see RF Exposure Exhibit (MPE report). Y A limited modular approval may be granted for single or split modular transmitters that do not comply with all of the above requirements, e.g., shielding, minimum signaling amplitude, buffered modulation/data inputs, or power supply regulation, if the manufacturer can demonstrate by alternative means in the application for equipment authorization that the modular transmitter meets all the applicable Part 15 requirements under the operating conditions in which the transmitter will be used. Limited modular approval also may be granted in those instances where compliance with R…

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Model 1846 Front Back

Model 1846 – Label Location Model 1846 Microsoft Corporation FCC ID: C3K1846, IC: 3048A-1846 Label located on bottom side of the module Baseband PCB

Model 1846 RF PCB Rx Antenna Tx Antenna RF IC Baseband PCB

Rev 2.0 MPE TEST REPORT For MODEL NO.: 1846 FCC ID: C3K1846 IC ID: 3048A-1846 Test Report No. S-215-FCCISED-MPE-2 Issue Date: November 10 th , 2020 FCC 47CFR Parts 1.1307, 1.1310, 2.1091 Innovation, Science and Economic Development Canada RSS-102 Issue 5 Prepared by Microsoft EMC Laboratory 17760 NE 67th Ct, Redmond WA, 98052, U.S.A. TESTING CERT #3472.01 FCC ID’s: C3K1846 IC ID’s: 3048A-1846 Report#: S-215-FCCISED-MPE-2 Issued: November 10, 2020 Page 2 of 13 Microsoft EMC Laboratory 1 Record of Revisions Revision Date Section Page(s) Summary of Changes Author/Revised By: 1.0 11/2/2020 All All Version 1.0 Wei Sun 2.0 11/10/2020 3.2 5 Updated site registration number Daniel Salinas FCC ID’s: C3K1846 IC ID’s: 3048A-1846 Report#: S-215-FCCISED-MPE-2 Issued: November 10, 2020 Page 3 of 13 Microsoft EMC Laboratory Table of Contents 1 Record of Revisions ............................................................................................................ 2 2 Deviations from Standards .................................................................................................. 5 3 Facilities and Accreditations ................................................................................................ 5 3.1 Test Facility .................................................................................................................. 5 3.2 Accreditations .............................................................................................................. 5 4 Product Description ............................................................................................................. 6 5 MPE Requirements ............................................................................................................. 7 5.1 FCC MPE Requirements.............................................................................................. 7 FCC RF Exposure Exemption Criteria .................................................................. 7 5.2 ISED MPE Requirements ............................................................................................. 9 ISED MPE Exemption Requirements from RSS-102 Section 2.5.2 ....................... 9 6 Maximum Device EIRP and ERP .......................................................................................10 7 Evaluation Against Exemption Criteria for RF Exposure Evaluation ...................................11 8 MPE Calculations and Evaluation ......................................................................................12 FCC ID’s: C3K1846 IC ID’s: 3048A-1846 Report#: S-215-FCCISED-MPE-2 Issued: November 10, 2020 Page 4 of 13 Microsoft EMC Laboratory Test Report Attestation Microsoft Corporation Model: 1846 FCC ID: C3K1846 ISED ID: 3048A-1846 Applicable Standards Specification Test Result FCC CFR47 Rule Parts 1.1307, 1.1310, 2.1091 Pass ISED RSS-102 Issue 5 Pass Microsoft EMC Laboratory attests that the product model identified in this report has been tested to and meets the requirements identified in the above standards. The test results in this report solely pertains to the specific sample tested, under the conditions and operating modes as provided by the customer. This report shall not be used to claim product certification, approval, or endorsement by A2LA or any agency of any Government. Reproduction, duplication, or publication of extracts from this test report is prohibited and requires prior written approval of Microsoft EMC Laboratory. Written By: Wei Sun Issued By: Daniel Salinas SAR and RF Test Engineer RF Lab Technical Manager FCC ID’s: C3K1846 IC ID’s: 3048A-1846 Report#: S-215-FCCISED-MPE-2 Issued: November 10, 2020 Page 5 of 13 Microsoft EMC Laboratory 2 Deviations from Standards None. 3 Facilities and Accreditations 3.1 Test Facility All test facilities used to collect the test data are located at Microsoft EMC Laboratory, 17760 NE 67 th Ct, Redmond WA, 98052, USA 3.2 Accreditations The lab is established and follows procedures as outlined in IEC/ISO 17025 and A2LA accreditation requirements. A2LA Accredited Testing Certificate Number: 3472.01 FCC Registration Number: US1141 IC Site Registration Numbers: 26315 FCC ID’s: C3K1846 IC ID’s: 3048A-1846 Report#: S-215-FCCISED-MPE-2 Issued: November 10, 2020 Page 6 of 13 Microsoft EMC Laboratory 4 Product Description Company Name: Microsoft Corporation Address: One Microsoft Way City, State, Zip: Redmond, WA 98052-6399 Customer Contact: Chaitrali Limaye Functional Description of the EUT: SRD Radio RF Exposure Conditions: Mobile Exposure Conditions (Separation distance of ≥ 20 cm) Model: 1846 FCC ID: C3K1846 IC ID: 3048A-1846 Radio Descriptions: SRD Radio Frequency Range of Operation: SRD Radio: 24.15– 24.25 GHz Antenna Peak Gains (dBi): Radio Band Chain A SRD Radio: 24.15– 24.25 GHz 4.0 Equipment Design State: Prototype/Production Equivalent Equipment Condition: Good FCC ID’s: C3K1846 IC ID’s: 3048A-1846 Report#: S-215-FCCISED-MPE-2 Issued: November 10, 2020 Page 7 of 13 Microsoft EMC Laboratory 5 MPE Requirements 5.1 FCC MPE Requirements The FCC MPE limits from CFR 47 Part 1.1310 are shown in the table below. Frequency range (MHz) Electric field strength (V/m) Magnetic field strength (A/m) Power density (mW/cm 2 ) Averaging time (minutes) (A) Limits for Occupational/Controlled Exposure 0.3-3.0 614 1.63 *100 6 3.0-30 1842/f 4.89/f *900/f 2 6 30-300 61.4 0.163 1.0 6 300-1,500 f/300 6 1,500-100,000 5 6 (B) Limits for General Population/Uncontrolled Exposure 0.3-1.34 614 1.63 *100 30 1.34-30 824/f 2.19/f *180/f 2 30 30-300 27.5 0.073 0.2 30 300-1,500 f/1500 30 1,500-100,000 1.0 30 FCC RF Exposure Exemption Criteria The exemption criteria for RF exposure evaluation from CFR 47 Part 2.1091(c) are as follows: (c)(1) Mobile devices that operate in the Commercial Mobile Radio Services pursuant to part 20 of this chapter; the Cellular Radiotelephone Service pursuant to part 22 of this chapter; the Personal Communications Services pursuant to part 24 of this ch…

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Rev 4.0 RADIO TEST REPORT For MODEL NO.: 1846 FCC ID: C3K1846 IC ID: 3048A-1846 Test Report No. R-TR677-FCCISED-SRD-3 Issue Date: November 18 th , 2020 FCC CFR47 Part 15 Subpart C Innovation, Science and Economic Development Canada RSS-210 Issue 10 Prepared by Microsoft EMC Laboratory 17760 NE 67th Ct, Redmond WA, 98052, U.S.A. 425-421-8641 [email protected] TESTING CERT #3472.01 FCC ID: C3K1846 IC ID: 3048A-1846 Report#: R-TR677-FCCISED-SRD-3 Issued: November 18, 2020 Page 2 of 45 Microsoft EMC Laboratory 1 Record of Revisions Revision Date Section Page(s) Summary of Changes Author/Revised By: 1.0 10/29/20 All All Version 1.0 Daniel Salinas 2.0 11/09/2020 8.1.1 13 Included note on test site correlation and EUT axes measured. Daniel Salinas 9.2 19 Included 20 dB Bandwidth Measurement 9.3 20-21 Update Fundamental Field Strength Measurement and Analyzer Settings 9.4 23 Included notes on worst case EUT orientation, antenna orientation and alternative measurement method per ANSI C63.10 9.4 24 Included note on ISED limits below 30 MHz 9.4 25-42 Included notes on image frequencies, antenna polarizations, and worst case EUT orientations 3.0 11/18/2020 9.3.4 21 Included note on worst case EUT orientation Daniel Salinas 9.4.5 30-41 Removed average image frequency table FCC ID: C3K1846 IC ID: 3048A-1846 Report#: R-TR677-FCCISED-SRD-3 Issued: November 18, 2020 Page 3 of 45 Microsoft EMC Laboratory Table of Contents 1 Record of Revisions ............................................................................................................................... 2 2 Deviations from Standards.................................................................................................................... 6 3 Facilities and Accreditations ................................................................................................................. 6 3.1 Test Facility ................................................................................................................................. 6 3.2 Accreditations ............................................................................................................................. 6 3.3 Test Equipment ........................................................................................................................... 6 4 Measurement Uncertainty .................................................................................................................... 6 5 Product Description .............................................................................................................................. 7 5.1 Test Configurations .................................................................................................................... 7 5.2 Environmental Conditions ......................................................................................................... 7 5.3 Antenna Requirements .............................................................................................................. 8 5.4 Equipment Modifications ........................................................................................................... 8 5.5 Dates of Testing ......................................................................................................................... 8 5.6 Test Engineers ............................................................................................................................ 8 6 Test Results Summary ........................................................................................................................... 9 7 Test Equipment List ............................................................................................................................. 10 8 Test Site Description ........................................................................................................................... 13 8.1 Radiated Emissions Test Site ................................................................................................ 13 Radiated Measurements in 9 kHz- 30 MHz ......................................................................... 13 Radiated Measurements in 30 MHz - 1000 MHz ................................................................ 13 Radiated Measurements1 GHz – 40 GHz ............................................................................ 13 Radiated Measurements 40 GHz – 100 GHz ....................................................................... 13 8.2 Antenna port conducted measurements ............................................................................... 14 8.3 Test Setup Diagrams ............................................................................................................... 14 9 Test Results ......................................................................................................................................... 17 9.1 Duty Cycle ................................................................................................................................. 17 Test Requirement:............................................................................................................... 17 Test Method ........................................................................................................................ 17 Test Results ......................................................................................................................... 17 9.2 Occupied Bandwidth and 20 dB Bandwidth ......................................................................... 18 Test Requirement ................................................................................................................ 18 FCC ID: C3K1846 IC ID: 3048A-1846 Report#: R-TR677-FCCISED-SRD-3 Issued: November 18, 2020 Page 4 of 45 Microsoft EMC Laboratory Test Method ........................................................................................................................ 18 Limit…

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Rev 4.0 RADIO TEST REPORT For MODEL NO.: 1846 FCC ID: C3K1846 IC ID: 3048A-1846 Test Report No. R-TR677-FCCISED-TS-1 Issue Date: Nov 05, 2020 FCC CFR47 Part 15 Subpart C Innovation, Science and Economic Development Canada RSS-210 Issue 10 Prepared by Microsoft EMC Laboratory 17760 NE 67th Ct, Redmond WA, 98052, U.S.A. 425-421-8641 [email protected] TESTING CERT #3472.01 FCC ID: C3K1846 IC ID: 3048A-1846 Report#: R-TR677-FCCISED-TS-1 Issued: Nov 05, 2020 Page 2 of 9 Microsoft EMC Laboratory 1 Record of Revisions Revision Date Section Page(s) Summary of Changes Author/Revised By: 1.0 11/05/2020 All All Version 1.0 Jems Pradhan FCC ID: C3K1846 IC ID: 3048A-1846 Report#: R-TR677-FCCISED-TS-1 Issued: Nov 05, 2020 Page 3 of 9 Microsoft EMC Laboratory 1. SRD Test Setup Photos Figure 1: Radiated Spurious Emission (9k-30MHz) Figure 2: Radiated Spurious Emission (30MHz-1GHz) FCC ID: C3K1846 IC ID: 3048A-1846 Report#: R-TR677-FCCISED-TS-1 Issued: Nov 05, 2020 Page 4 of 9 Microsoft EMC Laboratory Figure 3: Radiated Spurious Emission (1-18GHz) Figure 4: Radiated Spurious Emission (18-26.5GHz) FCC ID: C3K1846 IC ID: 3048A-1846 Report#: R-TR677-FCCISED-TS-1 Issued: Nov 05, 2020 Page 5 of 9 Microsoft EMC Laboratory Figure 5: Radiated Spurious Emission (26.5-40GHz) Figure 6: Radiated Spurious Emission (40-60GHz) FCC ID: C3K1846 IC ID: 3048A-1846 Report#: R-TR677-FCCISED-TS-1 Issued: Nov 05, 2020 Page 6 of 9 Microsoft EMC Laboratory Figure 7: Radiated Spurious Emission (50-75GHz) Figure 8: Radiated Spurious Emission (75-100GHz) FCC ID: C3K1846 IC ID: 3048A-1846 Report#: R-TR677-FCCISED-TS-1 Issued: Nov 05, 2020 Page 7 of 9 Microsoft EMC Laboratory Figure 9: Radiated Spurious Emission EUT Setup Figure 9: Occupied Bandwidth Measurement Setup FCC ID: C3K1846 IC ID: 3048A-1846 Report#: R-TR677-FCCISED-TS-1 Issued: Nov 05, 2020 Page 8 of 9 Microsoft EMC Laboratory Figure 10: AC Line Conducted Emission Setup FCC ID: C3K1846 IC ID: 3048A-1846 Report#: R-TR677-FCCISED-TS-1 Issued: Nov 05, 2020 Page 9 of 9 Microsoft EMC Laboratory End of Report