2AXDT-RFM003RF Module 3 for Hearing Instruments

Sivantos GmbH - R&D PSA WLS L DE ERL - Richard Rose Page 1 of 3 Erlangen, 2021-04-27 Integration manual for RF Module 3 (RFM003) The “RFM003” radio module contains two radio transceivers running at 3.27 MHz and 2.45 GHz which are implemented in a single hardware platform. The 3.27 MHz radio consists of a nearfield inductive magnetic transceiver. It uses time division duplex and runs on a single channel with phase modulation. The signal is transmitted by a coil antenna. The intended use of this radio is to exchange data between two hearing aids or to communicate with a proprietary accessory. The 2.45 GHz radio is mainly used for Bluetooth® Low Energy Radio communication. In addition to that, the receiver is also capable of proprietary communication modes. The transceiver is connected to a PCB-integrated antenna. The intended use of this radio is to exchange data between hearing aids and Bluetooth accessories. The main part of the module is a set of analog and digital ASICs which contain both radios. These ASICs are mounted on a flex PCB. In addition to that the module comprises the coil antenna for the nearfield inductive magnetic system, one crystal and an EEPROM memory. The antenna for the 2.45 GHz radio is integrated in the flex PCB of the module. The matching circuitry between the radio ASIC and the antenna is also on the flex PCB. On the flex PCB additional components are mounted and connected to the radio module. These include microphones, the connector to the external speaker, push buttons, the telecoil and the battery connector. The system is powered by a lithium-ion battery, all necessary voltage regulators are included in the module. The PCB with the module and all other components of the hearing aid are arranged in a plastic frame that is not user serviceable or user modifiable. The outer housing may be replaced by field service, but this is not relevant for the wireless module. The module is thus not installed but instead assembled at the same time as the host is. The position of components and interconnection through the PCB are decided during the project phase for the different hosts and following the best practice of the engineering team in order to assure an optimal integration of the module. Several validation steps are done through the development to assure the full compliance with all the regulatory requirements. Sivantos GmbH - R&D PSA WLS L DE ERL - Richard Rose Page 2 of 3 Erlangen, 2021-04-27 The user guide must contain the HVIN, the FCC ID and the IC ID: HVIN: RFM003 Contains FCC ID: 2AXDT-RFM003 Contains IC ID: 26428-RFM003 and following statements: (English version) This Class B digital apparatus complies with Canadian ICES‑003. Changes or modifications made to this equipment not expressly approved by the legal manufacturer may void the FCC authorization to operate this equipment. This device complies with Part 15 of the FCC Rules and with ISED's licence-exempt RSSs. Operation is subject to the following conditions: • this device may not cause harmful interference, and • this device must accept any interference received, including interference that may cause undesired operation. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: • Reorient or relocate the receiving antenna. • Increase the separation between the equipment and receiver. • Connect the equipment to an outlet on a circuit different from that to which the receiver is connected. • Consult the dealer or an experienced radio/TV technician for help. The radiated output power of the device is far below the FCC and ISED radio frequency exposure limits. Sivantos GmbH - R&D PSA WLS L DE ERL - Richard Rose Page 3 of 3 Erlangen, 2021-04-27 For body worn operation, this device has been tested and meets the FCC RF exposure guidelines when used with the legal manufacturer’s accessories supplied or designated for this product. Use of other accessories may not ensure compliance with FCC RF exposure guidelines. (French version) Cet appareil numérique de classe B est conforme à la norme canadienne ICES‑003. Un changement ou une modification apporté à cet appareil sans être expressément approuvé par le fabricant légal peut annuler l'autorisation FCC d'utilisation de l'appareil. Cet appareil est conforme à la partie 15 des règlements FCC et aux normes RSS d'exemption de licence de l'organisme canadien ISDE. Son fonctionnement est soumis aux conditions suivantes : • cet appareil ne doit pas causer d'interférences nuisibles, et • cet appareil doit supporter toutes les interferences reçues, y compris celles susceptibles de perturber son bon fonctionnement. Cet appareil a été testé et déclaré conforme aux valeurs limites d'un appareil numérique de classe B selon la partie 15 des règlements FCC. Ces limites sont destinées à garantir une protection raisonnable contre les interférences nuisibles en milieu résidentiel. Cet appareil génère, utilise et peut rayonner de l'énergie radiofréquence et, s'il n'est pas installé et utilisé dans le respect des instructions, peut produire des interferences nuisibles aux liaisons radio. Cependant, rien ne garantit que ces interférences ne se produiront pas dans une installation particulière. Si cet appareil provoque des interférences nuisibles avec des récepteurs de rad…

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Sivantos GmbH - R&D PSA WLS L DE ERL - Richard Rose Page 1 of 1 Erlangen, 2021-03-18 Module pictures RFM003 – Host: Pure Charge&Go AX FCC ID: 2AXDT-RFM003 IC: 26428-RFM003

Sivantos GmbH - R&D PSA WLS L DE ERL - Richard Rose Page 1 of 3 Erlangen, 2021-04-27 Integration manual for RF Module 3 (RFM003) The “RFM003” radio module contains two radio transceivers running at 3.27 MHz and 2.45 GHz which are implemented in a single hardware platform. The 3.27 MHz radio consists of a nearfield inductive magnetic transceiver. It uses time division duplex and runs on a single channel with phase modulation. The signal is transmitted by a coil antenna. The intended use of this radio is to exchange data between two hearing aids or to communicate with a proprietary accessory. The 2.45 GHz radio is mainly used for Bluetooth® Low Energy Radio communication. In addition to that, the receiver is also capable of proprietary communication modes. The transceiver is connected to a PCB-integrated antenna. The intended use of this radio is to exchange data between hearing aids and Bluetooth accessories. The main part of the module is a set of analog and digital ASICs which contain both radios. These ASICs are mounted on a flex PCB. In addition to that the module comprises the coil antenna for the nearfield inductive magnetic system, one crystal and an EEPROM memory. The antenna for the 2.45 GHz radio is integrated in the flex PCB of the module. The matching circuitry between the radio ASIC and the antenna is also on the flex PCB. On the flex PCB additional components are mounted and connected to the radio module. These include microphones, the connector to the external speaker, push buttons, the telecoil and the battery connector. The system is powered by a lithium-ion battery, all necessary voltage regulators are included in the module. The PCB with the module and all other components of the hearing aid are arranged in a plastic frame that is not user serviceable or user modifiable. The outer housing may be replaced by field service, but this is not relevant for the wireless module. The module is thus not installed but instead assembled at the same time as the host is. The position of components and interconnection through the PCB are decided during the project phase for the different hosts and following the best practice of the engineering team in order to assure an optimal integration of the module. Several validation steps are done through the development to assure the full compliance with all the regulatory requirements. Sivantos GmbH - R&D PSA WLS L DE ERL - Richard Rose Page 2 of 3 Erlangen, 2021-04-27 The user guide must contain the HVIN, the FCC ID and the IC ID: HVIN: RFM003 Contains FCC ID: 2AXDT-RFM003 Contains IC ID: 26428-RFM003 and following statements: (English version) This Class B digital apparatus complies with Canadian ICES‑003. Changes or modifications made to this equipment not expressly approved by the legal manufacturer may void the FCC authorization to operate this equipment. This device complies with Part 15 of the FCC Rules and with ISED's licence-exempt RSSs. Operation is subject to the following conditions: • this device may not cause harmful interference, and • this device must accept any interference received, including interference that may cause undesired operation. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: • Reorient or relocate the receiving antenna. • Increase the separation between the equipment and receiver. • Connect the equipment to an outlet on a circuit different from that to which the receiver is connected. • Consult the dealer or an experienced radio/TV technician for help. The radiated output power of the device is far below the FCC and ISED radio frequency exposure limits. Sivantos GmbH - R&D PSA WLS L DE ERL - Richard Rose Page 3 of 3 Erlangen, 2021-04-27 For body worn operation, this device has been tested and meets the FCC RF exposure guidelines when used with the legal manufacturer’s accessories supplied or designated for this product. Use of other accessories may not ensure compliance with FCC RF exposure guidelines. (French version) Cet appareil numérique de classe B est conforme à la norme canadienne ICES‑003. Un changement ou une modification apporté à cet appareil sans être expressément approuvé par le fabricant légal peut annuler l'autorisation FCC d'utilisation de l'appareil. Cet appareil est conforme à la partie 15 des règlements FCC et aux normes RSS d'exemption de licence de l'organisme canadien ISDE. Son fonctionnement est soumis aux conditions suivantes : • cet appareil ne doit pas causer d'interférences nuisibles, et • cet appareil doit supporter toutes les interferences reçues, y compris celles susceptibles de perturber son bon fonctionnement. Cet appareil a été testé et déclaré conforme aux valeurs limites d'un appareil numérique de classe B selon la partie 15 des règlements FCC. Ces limites sont destinées à garantir une protection raisonnable contre les interférences nuisibles en milieu résidentiel. Cet appareil génère, utilise et peut rayonner de l'énergie radiofréquence et, s'il n'est pas installé et utilisé dans le respect des instructions, peut produire des interferences nuisibles aux liaisons radio. Cependant, rien ne garantit que ces interférences ne se produiront pas dans une installation particulière. Si cet appareil provoque des interférences nuisibles avec des récepteurs de rad…

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Sivantos GmbH - R&D PSA WLS L DE ERL - Richard Rose Page 1 of 1 Erlangen, 2021-03-18 Integrated Module RFM003 – Host: Pure Charge&Go AX FCC ID: 2AXDT-RFM003 IC: 26428-RFM003

BNetzA - CAB - 02/21 - 102 SAR Test exclusion documentation according to FCC KDB 447498, RSS-102 Report identification number: 1-1607/20-01-06 Exclusion (FCC_ISED) contains the module with the following certification numbers FCC ID 2AXDT-RFM003 ISED number 26428-RFM003 HVIN (Hardware Version Identification Number) RFM003 PMN (Product Marketing Name) RF Module 3 FVIN (Firmware Version Identification Number) -/- HMN (Host Marketing Name) -/- This test report is electronically signed and valid without handwritten signature. For verification of the electronic signatures, the public keys can be requested at the testing laboratory. Document authorised: Alexander Hnatovskiy Marco Scigliano Lab Manager Testing Manager Radio Communications & EMC Radio Communications & EMC Test report no.: 1-1607/20-01-06 © CTC advanced GmbH Page 2 of 5 EUT technologies: Technologies: Max. rated EIRP Bluetooth LE 8.0 dBm (Peak) -1.7 dBm (AVG) MI Link 3.27 MHz )* 0.1 dBμV/m @ 30m (QP) Note: Bluetooth LE test results see CTC advanced test report 1-1607/20-01-05 )* exempt from routine evaluation for FCC according to CFR47 § 2.1093 Duty cycle correction with worst case operation mode see plots and calculations at the end of the document. SAR test exclusion according to KDB447498 (General RF Exposure Guidance v06) Equation from Chapter 4.3.1: Standalone SAR test exclusion considerations page 11 and ff. (1) Standalone SAR test exclusion for 100 MHz to 6 GHz at test separation distances ≤ 50mm ( Threshold 1-g;10-g ) × d seperation / f 0.5 where Threshold 1-g;10-g is 3 for 1-g; 7.5 for 10-g d seperation is the min. test separation distance; 5mm is used if the distance is less f is the RF channel transmit frequency The table below gives the calculated maximal power that could be used for source based time averaged conducted or radiated power, adjusted for tune up tolerance. If this is at or below the calculated value the DUT is exempted from SAR evaluation. frequency d separation Powerlimit [MHz] [mm] [mW] [dBm] [mW] 2450.00 5 3 9.58 -1.70 0.68 yes Threshold 1-g Exclusion P max-declared SAR test exclusion according to RSS-102 Issue 5 Section 2.5.1/Table 1 The table below gives the calculated maximal power that could be used for source based time averaged conducted or radiated power, adjusted for tune up tolerance. If this is at or below the calculated value the DUT is exempted from SAR evaluation. frequency d separation Powerlimit [MHz][mm][mW][dBm][mW] 2450.00 5 1 g 4.00-1.700.68yes tissue volume P max-declared Exclusion The limits above are defined for body worn application and therefore cover all use cases. Test report no.: 1-1607/20-01-06 © CTC advanced GmbH Page 3 of 5 Plot 1: Plot 2: Date: 27.APR.2021 12:03:12 Date: 27.APR.2021 12:03:47 Test report no.: 1-1607/20-01-06 © CTC advanced GmbH Page 4 of 5 Plot 3: Plot 4: Date: 27.APR.2021 12:04:08 Date: 27.APR.2021 12:06:29 Test report no.: 1-1607/20-01-06 © CTC advanced GmbH Page 5 of 5 2416 MHz 2444 MHz 2472 MHz 2.4 GHz band Number of bursts 6 10 6 -/- Burst duration (worst case) [ms] 3*0.161 = 0.483 3*0.161 = 0.483 3*0.161 = 0.483 -/- Sum of each plot [ms] 2.898 4.83 2.898 -/- Sum of the whole 2.4 GHz band [ms] -/- -/- -/- 10.626 This leads to a duty cycle correction factor of: F = 10 * log (duty cycle / 100 ms) = -9.7 dB

BNetzA-CAB-02/21-102 TEST REPORT Test report no.: 1-1607/20-01-04 Testing laboratory Applicant CTC advanced GmbH Untertuerkheimer Strasse 6 – 10 66117 Saarbruecken / Germany Phone: + 49 681 5 98 - 0 Fax: + 49 681 5 98 - 9075 Internet: https://www.ctcadvanced.com e-mail: [email protected] Accredited Testing Laboratory: The testing laboratory (area of testing) is accredited according to DIN EN ISO/IEC 17025 (2018-03) by the Deutsche Akkreditierungsstelle GmbH (DAkkS) The accreditation is valid for the scope of testing procedures as stated in the accreditation certificate starting with the registration number: D-PL-12076-01. WSAUD A/S Nymøllevej 6 DK-3540 Lynge / DENMARK Phone: +45 4435 5600 Contact: Richard Rose e-mail: [email protected] Manufacturer WSAUD A/S Nymøllevej 6 DK-3540 Lynge / DENMARK Test standard/s FCC - Title 47 CFR Part 15 FCC - Title 47 of the Code of Federal Regulations; Chapter I; Part 15 - Radio frequency devices RSS - 210 Issue 10 Spectrum Management and Telecommunications Radio Standards Specification - Licence-Exempt Radio Apparatus: Category I Equipment RSS - Gen Issue 5 incl. Amendment 1 Spectrum Management and Telecommunications Radio Standards Specification - General Requirements for Compliance of Radio Apparatus For further applied test standards please refer to section 3 of this test report. Test Item Kind of test item: RF Module for hearing aids Model name: RF Module 3 FCC ID: 2AXDT-RFM003 IC: 26428-RFM003 Frequency: 3.27 MHz Technology tested: Inductive coupling Antenna: Integrated ferrite coil antenna Power supply: 3.27 V to 3.85 V DC by Li Ion battery Temperature range: 0°C to +50°C This test report is electronically signed and valid without handwritten signature. For verification of the electronic signatures, the public keys can be requested at the testing laboratory. Test report authorized: Test performed: Christoph Schneider Tobias Wittenmeier Lab Manager Testing Manager Radio Communications Radio Communications Test report no.: 1-1607/20-01-04 © CTC advanced GmbH Page 2 of 31 1 Table of contents 1 Table of contents ............................................................................................................................................ 2 2 General information ....................................................................................................................................... 3 2.1 Notes and disclaimer .......................................................................................................................... 3 2.2 Application details ............................................................................................................................... 3 2.3 Test laboratories sub-contracted ...................................................................................................... 3 3 Test standard/s, references and accreditations .......................................................................................... 4 4 Reporting statements of conformity – decision rule .................................................................................. 5 5 Test environment ............................................................................................................................................ 6 6 Test item .......................................................................................................................................................... 6 6.1 General description ............................................................................................................................. 6 6.2 Additional information ........................................................................................................................ 6 7 Description of the test setup ......................................................................................................................... 7 7.1 Shielded semi anechoic chamber ...................................................................................................... 8 7.2 Shielded fully anechoic chamber .................................................................................................... 10 7.3 Radiated measurements RF laboratory .......................................................................................... 11 8 Sequence of testing ..................................................................................................................................... 12 8.1 Sequence of testing radiated spurious 9 kHz to 30 MHz ............................................................... 12 8.2 Sequence of testing radiated spurious 30 MHz to 1 GHz .............................................................. 13 9 Measurement uncertainty ............................................................................................................................ 14 10 Summary of measurement results .......................................................................................................... 15 11 Additional comments ............................................................................................................................... 15 12 Measurement results ................................................................................................................................ 16 12.1 Occupied bandwidth ...................................................................................................................... 16 12.2 Field strength of the fundamental ................................................................................................ 19 12.3 Field strength of the harmonics and spurious ........................................................................... 21 13 Observations ............................................................................................................................................. 28 14 Glossary ..........................................................................…

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Annex D 1-1607/20-01-01_AnnexD Setup photos of the Equipment Under Test This addendum is electronically signed and valid without handwritten signature. For verification of the electronic signatures, the public keys can be requested at the testing laboratory. Document authorized: Michael Dorongovski Lab Manager Radio Communications CTC advanced GmbHUntertuerkheimer Str. 6-10 66117 Saarbruecken / Germany Phone: +49 681 5 98 - 0 Fax: +49 681 5 98 - 9075 web: ctcadvanced.com e-mail: [email protected] Photos Photo 1 Photo 2 2021-04-21Document No. 1-1607/20-01-01_AnnexD2/6 Photo 3 Photo 4 2021-04-21Document No. 1-1607/20-01-01_AnnexD3/6 Photo 5 Photo 6 2021-04-21Document No. 1-1607/20-01-01_AnnexD4/6 Photo 7 Photo 8 2021-04-21Document No. 1-1607/20-01-01_AnnexD5/6 Document history VersionApplied changesDate of release initial release2021-04-21 - END OF DOCUMENT - 2021-04-21Document No. 1-1607/20-01-01_AnnexD6/6