FCC ID: RMU-351540036 RTX1290 Audio Wireless Module model 351540036

FISHMAN RTX1290 AUDIO WIRELESS MODULE Model # 351540036 USER MANUAL FCC ID: RMU-351540036 IC: 10812A-351540036 Model # 351540036 FCC Compliance Statement This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

(1) This device may not cause harmful interference, and

(2) This device must accept any interference received, including interference that may cause undesired operation. FCC Interference Statement This equipment has been tested and found to comply with the limits for a Class B digital devices, 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 of the following measures:

Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to switch the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. Warning Changes or modifications not expressly approved by FISHMAN could void the users authority to operate the equipment. This device complies with Industry Canada license-exempt RSS standard(s): Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference that may cause undesired operation of the device. Le prsent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorise aux deux conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2) l'appareil doit accepter tout brouillage radiolectrique subi, mme si le brouillage est susceptible d'en compromettre le fonctionnement. WARNING!

FCC and IC Radiation Exposure Statement:

This portable equipment with its antenna complies with FCCs and ICs RF radiation exposure limits set forth for an uncontrolled environment. To maintain compliance follow the instructions below:

1. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. 2. Avoid direct contact to the antenna, or keep contact to a minimum while using this equipment. 1. INTRODUCTION The RTX1290 wireless module is a 2.4GHz Audio wireless part, based on a Dialog Semiconductor DA14195 audio processor, a Nordic nRF52 radio chip and an RF Power Amplifier. The module offers full DA14195 feature set and requires only a motherboard and power source like battery. Please note that the RTX1290 module only provides digital audio interfaces, and hence, if an analog audio interface is required, a hardware codec and analogue circuits needs to be added to the motherboard as well. The module has the integrated 2 PCB antennas. 2. FEATURES

- Complies with sub 10 dBm EIRP 2.4GHz worldwide standards.

- Supported audio codec and audio features: G.726, G.722, CELT 4.0, PAEC 6.0, SheersoundTM along with other options via software customization

- Operating range:

1. Power supply:

VBAT: 2.0-5.0VDC (typically battery supply) VBUS: 4.2-5.75VDC (typically USB) 2. Ambient temperature: -20C to +60C

- USB charge control for rechargeable battery (e.g. Lithium-ion) Analogue Interfaces

- 2 input 10-bit ADC, single ended/differential Digital Interfaces

- USB 2.0 HS1/FS Device MAC/PHY with DMA

- 28 I/O pads with state retention and slope control

- Dual UART full duplex 9.6 kBd to 812.5 kBd with FIFO and DMA support

- Dual SPI interface 20.736 MHz (master/slave)

- I2C interface 100 kHz, 400 kHz, 1.152 MHz (master/slave)

- Dual PCM interface, M/S, 2 x 32 bits, 196 kHz, I2S

- Three stereo PDM I/O for digital microphones Radio Transceiver

- 2.4 GHz transceiver Radio Transmitter and protocol features

- Interference avoidance algorithms for avoiding interference from WiFi and other 2.4GHz standards. The EUT transmits on two RF channels alternately. If interference degrades one RF channel, the other RF channel provides the full data. The degradation will be sensed by the receiver, and the receiver provides this information to the transmitter. The transmitter will then relocate both RF channels to unoccupied channels.

- Antenna diversity

- Optional interference avoidance algorithms utilizing:

1. Dual slot diversity 2. Seamless bearer selection and handover 3. Retransmission of real-time data.

- HW provides adjustable saturation power from +4.5dBm to 9.5dBm conducted power. Available program memory 32 Mbit flash 3. SPECIFICATIONS Operation Frequency Band 2.402GHZ ~ 2.480GHz unlicensed ISM Channel step size 3 MHz Receiver sensitivity Typ: -90 dBm Transmit Power Range Typ: 4.5 9.5 dBm Supply voltage on pin VBAT 2 5V Supply voltage on pin VBUS_CHARGE 4.2 5.75V Supply voltage on IO banks 1.7 3.45V Supply voltage for RF power amp 1.8V Maximum current draw on VBUS for charging on VBAT 360 440 mA Operation current from 3.7V Li-Ion battery up to 100mA depends on usage. Host Interface USB 2.0 Audio Interface Analog Dimension 45.7mm x 20.3mm The separation distance for RF Exposure is 10 mm. 4. TYPICAL CONNECTION DIAGRAM U10 RESET VBUS_CHARGE ANT1 ANT2 VSUPPLY VBAT SOCN SOCP VDD_1V8 VDD_PA GND B2 B6 C48 10pF R49 - RF Power Set R49 22uF 16V 15 C50 22uF 16V C47 C49 100pF FB4

+1.8VDD 330 Ohm 1.2A VSUPPLY Rechargeable Battery 3.7V VBUS_CHARGE

+5V VBAT TP10 C43 1uF

+BATT C44 10pF R43 0 C45 10uF

-BATT Star Connection R44 0.1 Ohm Star Connection C42 0.1uF P2 1 2 3 Header 3-pin PH R/A

+1.8VDD NTC_BATT TP12

+3.3VDD To Host Device UTX URX To ADC Device I2S_MCLK TP13 To On/Off switch NTC_BATT PON To ADC Device I2S_LRCK I2S_SCLK I2S_RX F1 M4 M1 M3 L2 L3 TP11 K1 C46 0.1uF L1 C51 0.1uF J3 J2 H3 H2 K3 G3 L5 L7 K4 J4 G4 H1 G2 F2 E3 E2 J7 H7 G7 F7 E7 D7 E6 F6 F5 K6 K7 D3 D4 C4 E4 F4 H6 VDD_3V3 P0_0/UTX P0_1/URX P0_2 P0_3 P0_4 P0_5 P0_6/32K_XTAL1 P0_7/32K_XTAL2 P0_8 P0_9 P0_10 P0_11/BXTAL P0_12/SPDIF_IN P0_13/ADC1/COMP P0_14/ADC0/NTC P0_15/PON P1_0 P1_1 P1_2 P1_3 P1_4 P1_5 P1_6/LED0 P1_7/LED1 P1_8/LED2 SWDIO SWCLK P2_0 P2_1 P2_2 RF_SPIINT/SYNC RF_P0.12 RF_P0.14

+2.8V_ADC VDDIO_0 VDDIO_1 VDDIO_2 J8 H8 F8 4 5 C52 1uF U11 TCR2LE28,LM(CT VOUT VIN Cont NC D N G 2 3 1

+3.3VDD C53 1uF 1 2 3 D4 TVS Diode NUP3115UPMUTAG 6 D1 VBUS 5 4 D2 D3 D N G NC NC 7 FB5 USB-C Recepticle J1 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 D N G G FB6 330 Ohm 1.2A R51 5.1K C55 100pF C57 0.1uF 330 Ohm 1.2A C54 0.1uF C56 10uF R52 5.1K TP14 VBUS_CHARGE NTC_BATT R53 4.7K R54 NU USBN USBP VDD_USB M6 M7 L8 B8 GND C7 GND F3 GND G8 GND H4 GND J1 GND J6 GND M2 GND M5 GND GND M8 Fishman RTX1290 Module 5. OEM INTEGRATION INSTRUCTION This 2.4 GHz wireless module can be configured as Tx or Rx based on the firmware loaded. The user must pick a host device like MCU to introduce the feature set required. It will be connected to the module by the UTX/URX lines. Also a USB-C jack is required to charge Li-Ion battery if used. See the typical connection diagram. This module required an external ADC chip for Tx and an external DAC chip for Rx connected by the I2S lines to get the analog audio input and output. In addition to this, it requires to connect On/Off switch to pin PON of the module to power on/off the module. All required LEDs and additional switches can be connected to the host device. The module is used the connector like edge plated pins (please see the picture on front page), so the matching footprint on the motherboard must be used. Please contact Fishman for additional information. 6. LABELING INSTRUCTION Any end products must have the following on the label:

Contains FCC ID: RMU-351540036 Contains IC: 10812A- 351540036

18mm R=1mm 12mm FCC ID: RMU-351540036 IC: 10812A-351540036 Model: 351540036 Material: Thermal Transfer Label Matte Platinum Polyester 2.0mil [51 micron]

Finish: #350 Acrylic Adhesive + protective liner High-tack (permanent) adhesive D. FOURNIER 7/15/20121 FISHMAN TRANSDUCERS, INC. 3 Riverside Drive, Andover, MA 01810 USA Tel: +1 978.988.9199 Fax: 978.988.0770 www.fishman.com DECAL, FCC ID, WIRELESS MODULE A 470-300-XXX 0

FISHMAN April 4, 2022 To:

Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046-1609 Ce:

Bureau Veritas Consumer Products Services Inc. 775 Montague Expressway Milpitas, CA 95035 Subject: Confidentiality Request for FCC ID: RMU-351540036 Pursuant to CFR 47 sections 0.457 and 0.459, we respectfully request permanent confidential treatment of the following Exhibits accompanying this application be held confidential:

Type of Confidentiality Requested Exhibit 0 Short Term &] Permanent Block Diagram XX Short Term External Photos XI Short Term C1 Permanent i Internal Photos C1 Short Term ] Permanent Operational Description/ Theory of Operation C1 Short Term C1 Short Term C1 Short Term C1 Short Term

& Short Term

(C1 Permanent C1 Permanent i] Permanent 1 Permanent Parts List Tune-Up Procedure Schematics Test Setup Photos User's Manual The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. Permanent Confidentiality:

The applicant requests the exhibits listed above as permanently confidential be permanently withheld from public review due to materials that contain trade secrets and proprietary information not customarily released to the public. Short-Term Confidentiality:

To avoid premature release of sensitive information prior to marketing or release of the product to the public, the applicant requests the following documents contained in this certification application be temporarily withheld from public disclosure for an initial period of 45 O or 180 &] days; or for a specified date of not to exceed 180 days from the Grant Date The applicant understands that disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely, Client's signature:

Clients name & titl Jason Cambra COO Contact information/ address: jcambra@fishman.com, ph.# 978-253-5408

' Permanent confidentiality may be requested in accordance with FCC KDB 726920 3 Riverside Drive Andover, MA 01810 USA Phone: 978.988.9199 Fax: 978.988.0770 www.fishman.com

FISHMAN 04/04/22 RTX1290 Audio Wireless Module FCC ID: RMU-351540036 __, is seeking FCC Authorization as a X|Single Modular Transmitter /|_] Single Limited Modular Transmitter (Please check one) The EUT meets the requirements for X]Single Modular Approval /[_]Single Limited Modular Approval (Please check one) as detailed in KDB 996369. Compliance to each of the requirements is described below:

Item |

Modular requirement Yes lease provide a detailed ex

Have its own RF shielding X No. planation if the answer is Have buffered modulation/data inputs (if such inputs are provided) X The modular transmitter must have its own power supply X regulation. Meet the antenna requirements of section 15.203 X Be tested in a stand-alone configuration, i.e., the antenna, AC or DC power and data input/output lines must be connected to the X module but, the module must not be inside another case during testing. Be labeled with its own FCC ID number, and if the FCC ID 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. The modular transmitter is manufactured so that the user can not influence the operation of the transmitter that will operate outside of the scope of the regulations. Address compliance with the Commission's RF exposure limits in Sections 1.1310 and 2.1093.

(2)

(3) LMA may be granted when one or more of the requirements in the table above cannot be demonstrated. LMA will also be issued in those instances where applicants can demonstrate that they will retain control over the final installation of the device, such that compliance of the end product is assured. In such cases, an operating condition on the LMA for the module must state that the module is only approved for use when installed in devices produced by a specific manufacturer. When LMA is sought, the application for equipment certification must specifically state how control of the end product into which the module will be installed, and will be maintained, such that full compliance of the end product is always ensured. Please provide Clear and specific instructions describing the conditions, limitations and procedures for third-parties to use and/or integrate the module into a host device. For non-Software Defined Radio transmitter modules where software is used to ensure compliance of the device, technical description of how such control is implemented to ensure prevention of third party modification must be provided (see KDB 594280). Note 1: Compliance of a module in its final configuration is the responsibility of the applicant. A host device will not be considered certified if the instructions regarding antenna configuration provided in the original description, of one or more separately certified modules it contains, were not followed. Example: A separately certified low-power transceiver module using Bluetooth technology which is housed in a desktop computer, laptop or peripheral does not require the overall system to be recertified, if the desktop computer, laptop or peripheral, as a stand-alone unit, complies with all applicable technical standards. Client's signature Client's name / tit!

Contact inform ason Cambra/COO n/address jcambra@fishman.com 3 Riverside Drive, Andover, MA 01810 USA 3 Riverside Drive Andover, MA 01810 USA Phone: 978.988.9199 Fax: 978.988.0770 www.fishman.com