YB2-CD903CD903

English User Manual of CD Walkman NAME:CD903 MODEL: CDS9 Dear user: Thank you for choosing a portable CD player from HOTT. We wish you have a happy experience, please read this manual carefully before use and keep this manual in a safe place for your use. Accessories: CD Player Operation manual Power cable Audio cable Earphone Start-upSteps Key Function Description : Turn on / Turn off Long-press for more than 3 seconds to turn on and play, long-press for more than 3 seconds to turn off when the back light is on : Play / Pause Short-press to pause / play when playing. : PREV / Fast backward Short-press for once to replay the song when playing, short-press for twice to skip to the previous track, long-press to fast backward : DOWN / Fast forward Short-press to the next track when playing, long-press to fast forward. : EQ sound effect / MP3 track area to select to play Short-press the order (BBS - mega bass)→(POP - popular)→(JAZZ - jazz)→(ROCK - rock)→(CLASSIC - classic)→(return to the original state). Long-press EQ key to skip to DIR track area tp select to play when playing. No CD disk track function, long-press EQ key without effect. : Play mode Short-press the mode selection when playing: single cycle playing; ALL loop playback; DIR track area playing selection; INTRO browse playing; SHUF playing in random order and relieve the playing mode. (Note: All the play modes are applicable to MP3 disk, other play modes are applicable to CD disks except DIR track area.) FM transmitting function Double-click to enter FM transmission through to tune the frequency double-click to exitFM Bluetooth Functions Long-press to turn on the bluetooth device when playing, icon flickers to enter in the matching mode, it will match and connect with the surrounding bluetooth headset or bluetooth acoustics automatically within about 50s. Then long-press to switch and achieve the re-connection or bluetooth disconnection function, the matched device can turn on and connect automatically again. Back Function Introduction 1.HOLD (ON/OFF): lock / unlock the switch control (before starting up, you shall pull the key to OFF position). - ON: key lock - OFF: Unlock 2. Volume - / Volume +: Volume control switch can adjust the volume when playing. 3. Headset hole: Headset interface. 4. USB 5V: Power supply input. 5. Reset hole: Short-press to turn off. Charging Instructions: Inspect that if the power supply and voltage on the power adapter board matches with the local power supply. 1. Insert the power adapter cable in >>USB 5V<< socket. 2. Insert the power adapter in the power supply socket. - When charging, the red indicator is on. When it is fully charged, the blue indicator is on. It charges fully for 3-4 hours. - If >><< flickers on the display screen, it means that the power of CD player will be run out. Specifications and Parameters: Power input: USB ----5V 1A Output power: ＜20mW (32Ω dual track) Support the disc form: CD original edition disc, MP3 disc, CD-R, CD-RW; Support the music form: CD-DA, MP3, WMA SNR: ＞75dB Degree of distortion: ＜1% Charging period: 3-4 hours Playing period: ＞10 hours Machine dimension: ∮142X28mm Bluetooth transmitting distance: 10m FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment. 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. This device and its antenna(s) must not be co-located or operating in conjunction with any other antenna or transmitter. NOTE: 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 into 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. To maintain compliance with FCC’s RF Exposure guidelines, This equipment should be installed and operated with minimum distance between 20cm the radiator your body: Use only the supplied antenna. FCC ID: YB2-CD903 Safety Precautions: 1.Be cautious to prevent from the excessive output power and avoid your listening injury when setting the volume. 2.Avoid to connect the moisture, rains, sand or all kinds of heat source, do not play the vases or other objects with liquids on the device. 3.Please clean it with slightly wet soft cloth when cleaning, do not clean with alcohol or benzene solution. 4.Please turn off the main power switch if not using for long time. 5.Please do not repair the device by yourself, it shall be assumed by users themselves if it is damaged by repairing by themselves. Matters Need Attention Please read and follow the instructions carefully in order to use the player correctly. Do not strike the host machine seriously. do not touch benzene, diluent or other chemical objects. Please do not close to the high-intensity magnetic field or electric field. Please keep away from the direct light or heating appliance. Please do not heat the …

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HONGTIANTAI(H.K.)CO.,LIMITED Family models declaration letter. 2020/06/30 We HONGTIANTAI(H.K.)CO.,LIMITED Of 2102Pakpolee Commercial Centre 1A Sai Yeung Choi Street South Monqkok Kowloon Hong Kong Sar Hong Kong, China FCC ID: YB2-CD903 Model Name: CDS9 Family Model: CD903TF, CD903SDW, HC031, CD903T, HC032, CD903SDU, HC028, CDS4 All models are the same circuit and RF module, except the model name and the last three models(HC032, CD903SDU, HC028, CDS4) have no FM transmission function (common board). Thanks Sincerely, Signature Name: Wenjin Fan Title: Manager Email: [email protected]

F-6986 V1.2 PRODUCT SPECIFICATION Product Name：BT Module Product model：F-6986 V1.0 Document NO.：XZX-SPEC-BT-RD-028 Document version：V1.2 ISSUED DATE：2018-6-26 Design Check Approvel F-6986 V1.2 Revision History Version Description Page Revised Issued dateE Design V1.0 Original / 2018-04-17 Wudelong V1.1 The height of the package material of the module / 2018-4-24 Wudelong V1.2 Bluetooth version upgraded from 4.2 to 5.0 / 2018-6-26 Liuxiongchao Conent F-6986 V1.2 1. Product Overview.....................................................................................................4 2. Application areas..................................................................................................... 4 3. Basic characteristics................................................................................................ 4 4. Performance parameters......................................................................................... 5 5. Block Diagram.......................................................................................................... 5 Sixth, the module size diagram.................................................................................... 6 Seven, the height of the package material of the module............................................ 7 Eight, module pin definition diagram............................................................................ 8 Nine, pin function description........................................................................................9 Ten, circuit connection attention...................................................................................10 11. Matters needing attention.......................................................................................10 12. Recommended reflow temperature........................................................................ 11 13. Application schematic diagram............................................................................... 11 F-6986 V1.2 1. Product Overview: The F-6986 Bluetooth module is an intelligent wireless audio data transmission product independently developed by the company. It is a low-cost and cost-effective stereo wireless transmission solution. The module uses the BK3266A chip QFN40 package design of BEKEN. The Bluetooth module adopts a drive-free mode. Customers only need to connect the module to the application product to quickly realize the wireless transmission of music, enjoy the fun of wireless music, and support simple data transmission functions. Support intelligent voice prompt and report function; integrated TF card playback function; integrated mobile U disk playback function; support internal LINE-IN; support internal MIC call; and support BT HOST to transmit AUX analog signal to other Bluetooth receiver products to achieve BT Launch function. 2. Application areas: This module is mainly used for short-distance music transmission. It can be easily connected to the Bluetooth devices of digital products such as notebook computers, mobile phones, PDAs, etc. to realize wireless transmission of music. ※ High-end Bluetooth audio ※Bluetooth stereo headset ※speakerphone ※Bluetooth wireless audio transmission ※Bluetooth data transmission application ※Support mobile internet peripherals ※Bluetooth Smart Speaker ※Bluetooth HOST launch product 3. Basic characteristics: ※ Bluetooth Profiles ※ Bluetooth V5.0 specification support ※9 mA average current for A2DP ※0.8 uA deep sleep current ※Bluetooth 4.2 classic and low energy ※ A2DP v1.3, AVRCP v1.6, HFP v1.7, HID v1.1, AVCTP v1.4, AVDTP v1.3, and SPP v1.2 ※True wireless stereo and two active link ※Two wires UART download interface ※16 bits stereo ADC and DAC ※Stereo line in and dual microphone ※Five bands digital hardware equalizer ※SPI, UART, I2C, SDIO and USB F-6986 V1.2 ※I2S master and slave interface with MCLK output ※Interface for external PA and LNA ※Up to 220 mA battery charge controller 4. Performance parameters: Model F-6986 Bluetooth specification Bluetooth V5.0 Supply voltage: DC3.3-4.2V Support Bluetooth protocol A2DP v1.3, AVRCP v1.6, HFP v1.7, HID v1.1, AVCTP v1.4, AVDTP v1.3, and SPP v1.2 Working current ≤20mA stand-by current <500uA temperature range -40ºC to +80ºC Wireless transmission range: More than 10 meters Transmission power: CLASS2，4dbm Sensitivity: -81dBm<0.1%BER Frequency Range: 2.402GHz-2.480GHz External Interface: SPI, UART, I2C, GPIO,SDIO and USB Audio performance SBC Decoding Audio S/n: ≥75dB Module size 25 X 13.5 X 2mm 5.Block diagram: Antenna Crystal 26MHz SPI I2S ADC F-6986 GPIO UART AUX_IN MIC AUDIO L R F-6986 V1.2 6.Model Size： F-6986 V1.2 7.The height dimensions of the packaging materials of the module: F-6986 V1.2 8.Module pin definition diagram: F-6986 V1.2 9.Pin function description: Pin Symb I/O Description 1 GND GND RF_GND 2 RF_OUT RF RF_OUT / NC 3 GND GND RF_GND 4 GPIO14 Digital I/O GPIO14, JTAG_TDO/PWM5/ADC7/PCM_DOUT 5 GPIO5 Digital I/O GPIO5,SPI_MISO//I2C_SDA 6 GPIO4 Digital I/O GPIO4,SPI_MOSI//I2C_SCL 7 GPIO15 Digital I/O GPIO15, Soft shut down and wake up (active high) 8 NC NC NC 9 NC NC NC 10 TX Digital I/O GPIO0, UART_TXD/I2C_SCL, Download port 11 RX Digital I/O GPIO1, UART_RXD/I2C_SDA, Download port 12 USB_DN/NC Digital I/O GPIO7, PWM1 / USBN./NC 13 USB_DP/NC Digital I/O GPIO6, PWM0 / USBP./NC 14 GPIO8 Digital I/O GPIO8, SD_CLK//SPI2_SCK 15 GPIO9 Digital I/O GPIO9, SD_CMD/TX_EN/SPI2_MOSI 16 GND GND Ground connect battery negative 17 NC NC NC 18 GPIO12_CMD Digital I/O GPIO12,JTAG_TMS/PWM3/PCM_CLK/S D_CMD/ SPI2_MOSI 19 GPIO10 Digital I/O GPIO10, SD_DATA0/RX_EN/SPI2_MISO 20 GPIO13_SDO Digital I/O GPIO13,JTAG_TDI/PWM4/ADC6/PCM_DI N/S D_DATA0/SPI2_MISO 21 GPIO11_CLK Digital I/O GPIO11,JTAG_TCK/PWM2/ADC4/PCM_S YNC/S D_CLK//SPI2_SCK 22 USB_DP Digital I/O GPIO6, PWM0 / USBP 23 USB_DN Digital I/O GPIO7, PWM1 / USBN 24 GPIO2 Digital I/O GPIO2, SPI_CSN/ADC1/IrDA/Capture Time 25 GND GND GND 26 GPIO3 Digital I/O GPIO3, SPI_SCK/ADC2/CLKOUT F-6986 V1.2 27 LINR A…

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C5266091_X8_Ed.1 1/1 Letter of Authorization < HONGTIANTAI(H.K.)CO.,LIMITED > Company: HONGTIANTAI(H.K.)CO.,LIMITED Address: 2102Pakpolee Commercial Centre 1A Sai Yeung Choi Street South Monqkok Kowloon Hong Kong Sar Hong Kong, China Product Name: CD903 Model Number(s): CD903TF, CD903SDW, HC031, CD903T, HC032, CD903SDU, HC028, CDS4 Product Description: CD903 We authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, to act on our behalf on all matters concerning the above named equipment. Any individual within LGAI Technological Center S.A. is authorized to act on our behalf and take action on the application. We declare that authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by LGAI Technological Center S.A. on our behalf shall have the same effect as acts of our own. Name: Wenjin Fan Date: 2020/06/30 Title: Manager Signature of applicant:

C5266091_X10_Ed.2 1/1 < HONGTIANTAI(H.K.)CO.,LIMITED> Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Date: 2020/06/30 Subject: Request for Confidentiality FCC ID: YB2-CD903 To Whom It May Concern, Pursuant to the provisions of Sections 0.457 and 0.459 of Commission's rules (47CFR0.457, 0.459), we are requesting the Commission to withhold the following attachment(s) as confidential document from public disclosure. Exhibits Long-Term Confidentiality Short-Term Confidentiality NOTE 2 ID Label/Location No No Attestation Statement No No External Photos No Block Diagram ☐ Schematics ☐ Test Report No No Test Setup Photos No User’s Manual ☐ NOTE 1 Internal Photos ☐ NOTE 1 Parts List / Tune Up ☐ ☐ RF Exposure Info No No Operational Description ☐ Cover Letter(s) No No SDR Software / Security Info ☐ No NOTE 1: Long-Term Confidentiality may be permitted under special conditions (See II. LONG-TERM CONFIDENTIALITY, Section 3 of KDB 726920, use last in force) NOTE 2: Short-Term Confidentiality can be requested for a maximum of 180 days from the date of the grant. Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. In case of short-term Confidentiality, the applicant requests the exhibits selected above are withheld from public view for a period of __180____ days from the date of the Grant of Equipment Authorization and prior to marketing. It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. Sincerely, C5266091_X10_Ed.2 1/1 Signature: Name: Wenjin Fan Title: Manager

S20051503004 Model: CDS9 N20190309V1 Photo 1 Photo 2 S20051503004 Model: CDS9 N20190309V1 Photo 3 Photo 4 S20051503004 Model: CDS9 N20190309V1 Photo 5 Photo 6 S20051503004 Model: CDS9 N20190309V1 Photo 7 Photo 8

S20051503004 Model: CDS9 N20190309V1 Photo 1 Photo 2 S20051503004 Model: CDS9 N20190309V1 Photo 3 Photo 4 BT ANT BK3266 S20051503004 Model: CDS9 N20190309V1 Photo 5 Photo 6 FM ANT S20051503004 Model: CDS9 N20190309V1 Photo 7 Photo 8 S20051503004 Model: CDS9 N20190309V1 Photo 9 Photo 10

FCC ID: YB2-CD903 RF EXPOSURE EVALUATION According to FCC 1.1310: The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency(RF) Radiation as specified in §1.1307(b) Limits for Maximum Permissible Exposure (MPE) MPE Calculation Method E (V/m) ＝ d GP**30 Power Density: Pd (W/m²) ＝ 377 2 E E ＝ Electric field (V/m) P ＝ Average RF output power (W) G ＝ EUT Antenna numeric gain (numeric) d ＝ Separation distance between radiator and human body (m) The formula can be changed to Pd ＝ 2 *377 **30 D GP From the EUT RF output power, the minimum mobile separation distance, d=0.2m, as well as the gain of the used antenna, the RF power density can be obtained. MAX OUTPUT POWER BR+EDR Condition Mode Frequency (MHz) Antenna Power (dBm) Limit (dBm) Verdict NVNT 1-DH5 2402 Ant 1 1.981 30 Pass NVNT 1-DH5 2441 Ant 1 1.057 30 Pass NVNT 1-DH5 2480 Ant 1 1.449 30 Pass NVNT 2-DH5 2402 Ant 1 1.023 20.97 Pass NVNT 2-DH5 2441 Ant 1 0.22 20.97 Pass NVNT 2-DH5 2480 Ant 1 1.222 20.97 Pass NVNT 3-DH5 2402 Ant 1 0.997 20.97 Pass NVNT 3-DH5 2441 Ant 1 0.208 20.97 Pass NVNT 3-DH5 2480 Ant 1 1.035 20.97 Pass Measurement Result Operation Frequency: BT: 2402-2480MHz Power density limited: 1mW/ cm 2 Antenna Type: PCB Antenna Antenna gain: 0dBi, R=20cm conducted power Evaluation result Power density Limits (dBm)(mW)(dBi)Numeric 2402 1.981 1±12 1.5850.001.000.00031 2441 1.057 1±12 1.5850.001.000.00031 2480 1.449 1±12 1.5850.001.000.00031 2402 1.023 1±12 1.5850.001.000.00031 2441 0.22 1±12 1.5850.001.000.00031 2480 1.222 1±12 1.5850.001.000.00031 2402 0.997 1±12 1.5850.001.000.00031 2441 0.208 1±12 1.5850.001.000.00031 2480 1.035 1±12 1.5850.001.000.00031 Channel Freq. (MHz) modulation Tune-up power (dBm) (dBm) π/4-DQPSK 8-DPSK (mW/cm2 )(mW/cm2) Antenna Gain GFSK Max tune-up power Conclusion: For the max result : 0.0003≤ 1.0 for Max Power Density, compliance RF exposure.. Signature: Date: 2020-06-30 NAME AND TITLE (Please print or type): Alex Li/Manager COMPANY (Please print or type): Shenzhen NTEK Testing Technology Co., Ltd./ 1/F, Building E, Fenda Science Park, Sanwei Community, Xixiang Street Bao’an District, Shenzhen P.R. China.

Report No.: S20051503004001 Version.1.3 Page 1 of 78 RADIO TEST REPORT FCC ID: YB2-CD903 Product: CD903 Trade Mark: N/A Model No.: CDS9 Family Model: CD903TF, CD903SDW, HC031, CD903T, HC032, CD903SDU, HC028, CDS4 Report No.: S20051503004001 Issue Date: 08 Jun. 2020 Prepared for HONGTIANTAI(H.K.)CO.,LIMITED 2102Pakpolee Commercial Centre 1A Sai Yeung Choi Street South Monqkok Kowloon Hong Kong Sar HONGKONG, China Prepared by Shenzhen NTEK Testing Technology Co., Ltd. 1/F, Building E, Fenda Science Park Sanwei, Xixiang, Bao'an District Shenzhen, Guangdong, China Tel.: +86-755-6115 6588 Fax.: +86-755-6115 6599 Website:http://www.ntek.org.cn Report No.: S20051503004001 Version.1.3 Page 2 of 78 TABLE OF CONTENTS 1 TEST RESULT CERTIFICATION ...................................................................................................................... 3 2 SUMMARY OF TEST RESULTS ......................................................................................................................... 4 3 FACILITIES AND ACCREDITATIONS ............................................................................................................. 5 3.1 FACILITIES..................................................................................................................................................... 5 3.2 LABORATORY ACCREDITATIONS AND LISTINGS ................................................................................. 5 3.3 MEASUREMENT UNCERTAINTY ............................................................................................................... 5 4 GENERAL DESCRIPTION OF EUT .................................................................................................................. 6 5 DESCRIPTION OF TEST MODES ..................................................................................................................... 8 6 SETUP OF EQUIPMENT UNDER TEST ........................................................................................................... 9 6.1 BLOCK DIAGRAM CONFIGURATION OF TEST SYSTEM ....................................................................... 9 6.2 SUPPORT EQUIPMENT............................................................................................................................... 10 6.3 EQUIPMENTS LIST FOR ALL TEST ITEMS .............................................................................................. 11 7 TEST REQUIREMENTS .................................................................................................................................... 13 7.1 CONDUCTED EMISSIONS TEST ............................................................................................................... 13 7.2 RADIATED SPURIOUS EMISSION ............................................................................................................ 16 7.3 NUMBER OF HOPPING CHANNEL ........................................................................................................... 25 7.4 HOPPING CHANNEL SEPARATION MEASUREMENT ........................................................................... 26 7.5 AVERAGE TIME OF OCCUPANCY (DWELL TIME) ................................................................................ 27 7.6 20DB BANDWIDTH TEST .......................................................................................................................... 29 7.7 PEAK OUTPUT POWER .............................................................................................................................. 30 7.8 CONDUCTED BAND EDGE MEASUREMENT......................................................................................... 31 7.9 SPURIOUS RF CONDUCTED EMISSION .................................................................................................. 32 7.10 ANTENNA APPLICATION .......................................................................................................................... 33 7.11 FREQUENCY HOPPING SYSTEM (FHSS) EQUIPMENT REQUIREMENTS .............................................. 34 8 TEST RESULTS ................................................................................................................................................... 35 8.1 DWELL TIME ................................................................................................................................................... 35 8.2 MAXIMUM CONDUCTED OUTPUT POWER ....................................................................................................... 40 8.3 OCCUPIED CHANNEL BANDWIDTH .................................................................................................................. 45 8.4 CARRIER FREQUENCIES SEPARATION .............................................................................................................. 50 8.5 NUMBER OF HOPPING CHANNEL ..................................................................................................................... 55 8.6 BAND EDGE .................................................................................................................................................... 56 8.7 CONDUCTED RF SPURIOUS EMISSION ............................................................................................................. 69 Report No.: S20051503004001 Version.1.3 Page 3 of 78 1 TEST RESULT CERTIFICATION Applicant’s name ......................... : HONGTIANTAI(H.K.)CO.,LIMITED Address ....................................... : 2102Pakpolee Commercial Centre 1A Sai Yeung Choi Street South Monqkok Kowloon Hong Kong Sar HONGKONG, China Manufacturer's Name .................. : HONGFUTAI E-TECH (SHENZHEN) CO., LIMITED Address ....................................... : Fourth floor,Block A1, Zone3, XinXing Industrial Park, XinHe Village,FuHai Avenue FuYong Town, BaoAn District, ShenZhen, 518103,China Product description Product name .............................. : CD903 Model and/…

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Radiated Measurement Photos Conducted Measurement Photos