VHC-AAI-DH1030US02.4GHz Digital Wireless Headphones (Transmitter)

2.4GHz digital wireless headphones DH1030US/CRC#5499371 User's Manual INTRODUCTION Thank you for purchasing this system ! This 2.4GHz stereo wireless headphone system offers you advances in wireless transmission technology so that you can listen to ultra stereo sound from your audio components up to 50 meters. The transmitter is compactable to any audio sources, say DVD player, CD player, i-pod, MP3, TV set, VCR, Hi-Fi system or radio. FEATURES 1. 2.4GHz FHSS Digital technology. 2.Digital Pairing System on Headphone & transmitter 3. Electronic Volume Control on Headphones 4. Operating distance up to 50 meters 5. Automatic battery recharging (rechargeable batteries supplied) 6. RF technology leaves you completely free to move around 7. Auto Shut-off on headphone 8. Auto On/Off RF function on transmitter 9. Low Power indicator on headphone 10. 3.5mm Line in feature for corded headphone application 11. High quality stereo sound that is virtually interference-free. PACKAGING 1. RF receiver headphone 2. RF transmitter 3. 6V 300mA power adapter 4. 3.5mm to 3.5mm cable (1.5 meters) 5. 3.5mm to RCA adapter 6. 2x AA rechargeable batteries INSTALLATION TRANSMITTER PAIR AUDIO INDC IN SIGNAL CHARGE 1.Connect the mains adapter provided to an electrical outlet. 2.Connect the mains adapter to the DC IN input connector located on the transmitter rear panel. LED of transmitter will light up in red. 3.Use the audio cable attached with the transmitter to connect audio outputs on audio sources like TV set, Hi-Fi system, ipods, VCR or radio-cassette player. 4. The LED of transmitter will turn from red to green when there is audio signal from the source. The GREEN LED indicator will light up when audio source is on. If the GREEN indicator LED remains off, switch on the audio source and increase its output level until the GREEN indicator light comes on. HEADPHONE RECEIVER 1 4 3 2 1 BATTERY DOOR 2 3.5mm AUDIO IN 3 ON/OFF 4 VOL+.PAIR.VOL- ǃ ǃ ǃ ǃ 1.Remove the battery door from the left hand side (L) of receiver headphone. 2.Insert two rechargeable LR6/AA size batteries. Ensure correct polarity. 3.Put back the battery door to the left hand side of receiver headphone. 4.Switch off the receiver headphones and place it into the top of transmitter to charge the batteries for 16 hours before the initial use. OPERATIONS 1.Connect the power adapter between the transmitter and wall outlet. The LED on the transmitter will light up in Red. 2.Turn on the audio source with at least half-steps of maximum volume (TV or audio component) to which the transmitter is connected with. The LED will turn from Green to Blue. If the audio source is MP3 player, it is suggested to turn the volume to maximum to have stable audio output from the MP3 player. 3.Turn on the headphone receiver by pressing ON/OFF switch and LED will be in Red. 4.If the LED on the headphone is OFF immediately, please put the headphone back to the transmitter for recharging. 5.When the audio link is established, LEDs turns to Green and music will be played. 6.The LED on headphone will blink in Red if the battery power is low. 7.When listening is ended, turn OFF the headphone. NOTE: If the LED on headphone remains in Red and does not work, start Pairing process by pressing the Pair button for 3 seconds on the transmitter and the headphone simutaneously until the Green LEDs flash. The LEDs will change to solid Green when pairing process is finished. To protect the transmitter and save power, the transmitter will automatically go to standby mode and LED will change from green to red after approximately four minutes if there is no audio signal, or the signal that it receives from the audio source is too weak for proper reception. If however the signal returns to an acceptable level, then the transmitter will automatically switch back on. The headphone receiver will automatically shut off if getting no signal from transmitter in 15 minutes. CHARGING THE BATTERIES 1.Switch OFF the receiver headphone. 2.To recharge the headphone batteries, place the headphone on the transmitter, taking care to ensure that the charge contacts touch the transmitter's charge pins and thered LED will flash when quick charge is activated. When quick charge finishes, the LED will be solid red for slow charge mode. 3.Be sure to charge new batteries for 16 hours before using them for the first time in the headphones. The red indicator light will be on continuously during battery charging. Wired Headphone Application The headphone can be applied in corded mode. Simply connect the headphone and the audio source by the supplied 1.5 meters audio cable. You will then enjoy the audio in wired mode. WARNINGS: ** Never use another type of battery or non-rechargeable batteries to replace the rechargeable (LR6/AA) batteries supplied. When the headphones are not in use, switch OFF the headphones to avoid damaging the batteries. ** The batteries must be fully charged before first use. An initial 16 hours charge is required to guarantee an acceptable service life for the rechargeable batteries. Always ensure that the headphones are switched to the Off position while the batteries are charging. ** Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device. IMPORTANT ** This unit should be operated with rechargeable batteries only. When replacing the batteries or when disposing of the unit, always comply with applicable laws relating to the disposal of batteries. Please place them in a proper disposal container to ensure that they are eliminated safely and in an environmentally-friendly way. TECHNICAL SPECIFICATIONS Transmission mode: 2.4GHz digital FHSS stereo Carrier frequency: 2.4GHz Operating…

Text truncated - open the document above for the full version.

Acoustic Arc international ltd. Declaration letter for multiple models We, Acoustic Arc international ltd. Unit 311B, 3/F., IC Development Centre,6 Science Park West Avenue, Hong Kong Science Park, Shatin,New Territories, Hong Kong declare that the following product(s): Product Description: 2.4GHz digital wireless headphones. Model Number: DH1030US(Transmitter:DH103UST, Receiver:DH103USR.) / CRC#5499371 (Transmitter:CRC#5499371T,Receiver:CRC5499731R). utilize the identical circuit design, PCB layout, shielding and interface with (DH1030US(Transmitter:DH103UST, Receiver:DH103USR.) / CRC#5499371 (Transmitter:CRC#5499371T,Receiver:CRC5499731R) ), only the cosmetic is difference. Therefore this application can be regarded as identical in performance to the submitted test sample. The manufacturer would take all the responsibilities for the above product(s). For and on behalf of Hong Kong Authorized person Location Name: George Chan Position: Deputy General manager Date of issue: 24th Aug. 2012 Acoustic Arc international ltd. *I hereby declare that I am entitled to sign on behalf of the applicant and that the information supplied is correct and complete.

Appendix B Date: 2012-08-07 Report No.: 60.870.12.023.01F Model No.:DH103UST Photo of EUT – External EUT Photos Page 1 of 3 TÜV SÜD Hong Kong Ltd. 3/F, West Wing, Phase 2, 10 Science Park West Avenue, Shatin, Hong Kong Appendix B Date: 2012-08-07 Report No.: 60.870.12.023.01F Model No.:DH103UST Photo of EUT – External EUT Photos Page 2 of 3 TÜV SÜD Hong Kong Ltd. 3/F, West Wing, Phase 2, 10 Science Park West Avenue, Shatin, Hong Kong Appendix B Date: 2012-08-07 Report No.: 60.870.12.023.01F Model No.:DH103UST Photo of EUT – External EUT Photos Page 3 of 3 TÜV SÜD Hong Kong Ltd. 3/F, West Wing, Phase 2, 10 Science Park West Avenue, Shatin, Hong Kong AC/DC Adaptor

DH1030US Rating Label artwork 5 0 . 0 50.0 1 5 . 0 30.0 S I Z E A A S I Z E A A In the plastic part From mold Transmitter Rating label Size: 50x50mm Material: 80g Artpaper Printing|: Black background, white font + matte film Unit: mm Scale 1:1 Receiver Rating label Size: 30x15mm Material: 80g Artpaper Printing|: Black background, white font + matte film. Unit: mm Scale 1:1 Transmitter bottom view Headphone “L” side Transmitter Receiver 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. 2.4GHz digital wireless headphones. Transmitter DH103UST Made in China DC IN 6V 300mA FCC ID: VHC-AAI-DH1030US0 Manufacture : Acoustic Arc International Ltd., 0812 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. 2.4GHz digital wireless headphones. Transmitter DH103UST Made in China DC IN 6V 300mA FCC ID: VHC-AAI-DH1030US0 Manufacture : Acoustic Arc International Ltd., 0812 2 X 1.2V AA Ni-MH Batteries Made in China Manufacture : Acoustic Arc International Ltd., 2.4GHz digital wireless headphones. Receiver DH103USR 2 X 1.2V AA Ni-MH Batteries Made in China Manufacture : Acoustic Arc International Ltd., 2.4GHz digital wireless headphones. Receiver DH103USR

Appendix C Date: 2012-08-07 Report No.: 60.870.12.023.01F Model No.:DH103US(Transmitter) Photo of EUT – Internal EUT Photos Page 1 of 4 TÜV SÜD Hong Kong Ltd. 3/F, West Wing, Phase 2, 10 Science Park West Avenue, Shatin, Hong Kong Appendix C Date: 2012-08-07 Report No.: 60.870.12.023.01F Model No.:DH103US(Transmitter) Photo of EUT – Internal EUT Photos Page 2 of 4 TÜV SÜD Hong Kong Ltd. 3/F, West Wing, Phase 2, 10 Science Park West Avenue, Shatin, Hong Kong Appendix C Date: 2012-08-07 Report No.: 60.870.12.023.01F Model No.:DH103US(Transmitter) Photo of EUT – Internal EUT Photos Page 3 of 4 TÜV SÜD Hong Kong Ltd. 3/F, West Wing, Phase 2, 10 Science Park West Avenue, Shatin, Hong Kong Appendix C Date: 2012-08-07 Report No.: 60.870.12.023.01F Model No.:DH103US(Transmitter) Photo of EUT – Internal EUT Photos Page 4 of 4 TÜV SÜD Hong Kong Ltd. 3/F, West Wing, Phase 2, 10 Science Park West Avenue, Shatin, Hong Kong

TEST REPORT Date: 2012-08-07 Report No.: 60.870.12.023.01F Page 1 of 30 TUV SUD Hong Kong Ltd. 3/F, West Wing, Phase 2, 10 Science Park West Avenue, Shatin, Hong Kong Applicant: Acoustic Arc International Ltd. Unit 311B, 3/F, IC Development Centre, No.6 Science Park West Avenue, Hong Kong Science Park, Shatin, N.T. Hong Kong Description of Samples:Model name: 2.4GHzDigitalWirelessHeadphones (Transmitter) Brand name: aai Model no.:DH103UST, CRC#5499371T FCCID:VHC-AAI-DH1030US0 Date Samples Received:2012-07-19 Date Tested:2012-07-20 to 2012-08-07 Investigation Requested:FCC Part 15 Subpart C, Section 15.247 Conclusions:The submitted product COMPLIED with the requirements of Federal Communications Commission [FCC] Rules and Regulations Part 15. The tests were performed in accordance with the standards described above and on Section 2.2 in this Test Report. Remarks:---- Checked by: Approved by:- Ray CheungJeff Pong Project EngineerOperation Manager Wireless & Telecom DepartmentWireless & Telecom Department ReportNo.: 60.870.12.023.01F Page 2 of 30 TÜV SÜD Hong Kong Ltd. 3/F, West Wing, Phase 2, 10 Science Park West Avenue, Shatin, Hong Kong CONTENT: Cover Page 1 of 30 Content Page 2-3 of 30 1.0General Details 1.1Test Laboratory Page 4 of 30 1.2Applicant Details Page 4 of 30 1.3Equipment Under Test [EUT] Page 5 of 30 1.4 Related Submittal(s) Grants Page 5 of 30 2.0Technical Details 2.1Investigations Requested Page 6 of 30 2.2Test Standards and Results Summary Page 6 of 30 3.0Test Methodology 3.1Radiated Emission Page 7 of 30 3.2Field Strength Calculation Page 7 of 30 3.3Conducted Emission Page 7 of 30 4.0Test Results 4.1 Number of Frequency Hopping Page 8 of 30 4.2 20dB Bandwidth Measurement Page 9-10 of 30 4.3 Hopping Channel Carrier Frequency Separation Page 11 of 30 4.4 Average Time of Occupancy Page 12-14 of 30 4.5 Pseudorandom Hopping Algorithm Page 15 of 30 4.6 Band Edge Measurement Page 16-17 of 30 4.7 Maximum Output Power Page 18-20 of 30 4.8 Out ofBand Emissionsand Emissions in Restricted Bands Page 21-25 of 30 4.9 Conducted Emission on AC Mains Page 26-28 of 30 ReportNo.: 60.870.12.023.01F Page 3 of 30 TÜV SÜD Hong Kong Ltd. 3/F, West Wing, Phase 2, 10 Science Park West Avenue, Shatin, Hong Kong 5.0RF Exposure Compliance Requirement Page 29 of 30 6.0List of Measurement Equipments Page 30 of 30 Appendix A Photos of Test Setup Appendix B External EUT Photos Appendix C Internal EUT Photos ReportNo.: 60.870.12.023.01F Page 4 of 30 TÜV SÜD Hong Kong Ltd. 3/F, West Wing, Phase 2, 10 Science Park West Avenue, Shatin, Hong Kong 1.0General Details 1.1Test Laboratory SEM. Test Compliance Service Co., Ltd 3/F, Jinbao Commerce Building, Xin’an Fanshen Road, Bao’an District, Shenzhen Registration Number: 994117 Tested by: John Zhi 1.2Applicant Details Applicant Acoustic Arc InternationalLtd. Unit 311B, 3/F., IC Development Centre, No.6 Science Park West Avenue, Hong Kong Science Park, Shatin, N.T. Hong Kong Manufacturer Acoustic Arc InternationalLtd. Unit 311B, 3/F., IC Development Centre, No.6 Science Park West Avenue, Hong Kong Science Park, Shatin, N.T. Hong Kong ReportNo.: 60.870.12.023.01F Page 5 of 30 TÜV SÜD Hong Kong Ltd. 3/F, West Wing, Phase 2, 10 Science Park West Avenue, Shatin, Hong Kong 1.3Equipment Under Test [EUT] Description of EUT Product Description:2.4GHz DigitalWireless Headphones(Transmitter) ModelNo.:DH103UST, CRC#5499371T Brand Name: aai FCCID:VHC-AAI-DH1030US0 Rating:-DC6.0V,300mA powered by AC/DC power adaptor Operated Frequency:2404-2478MHz No. of Operated Channel:19 Accessories and Auxiliary Equipments:- iPhone - AC/DC power adaptor Antenna Type:Integral Manufacture of Antenna:Acoustic Arc International Ltd. Antenna Gain:0dBi Antenna Model:N/A General Operation of EUT The Equipment Under Test (EUT) is a Transmitter of the Wireless Headphone System operated at 2.4GHz. As per Client Declaration, the circuit design, PCB Layout, shielding and interface ofDH103UST and CRC#5499371T are identical, so we use DH103UST as a representative model to perform all testing. FHSS Operation Principle: This module is controlled by microchip to generate Pseudorandom Frequency Hopping Sequence, this module support 19 hopping channels. Refer to section 4.5 of this report to have more detail of Pseudorandom Hopping Algorithm. 1.4Related Submittal(s) Grants This is a signal application subjected to Certificate Authorization. ReportNo.: 60.870.12.023.01F Page 6 of 30 TÜV SÜD Hong Kong Ltd. 3/F, West Wing, Phase 2, 10 Science Park West Avenue, Shatin, Hong Kong 2.0Technical Details 2.1Investigations Requested Perform ElectroMagnetic Interference measurement in accordance with FCC 47CFR [Codes of Federal Regulations] Part 15 and ANSI C63.4: 2003 2.2Test Standards and Results Summary Tables Test ConditionTest RequirementTest Result PassN/A Number of Frequency Hopping Section 15.247 ( a1 ) 20dB Bandwidth Measurement Section 15.247 ( a1 ) Hopping Channel Carrier Frequency Separation Section 15.247 ( a1 ) Average Time of Occupancy Section 15.247 ( a1) Pseudorandom Hopping Algorithm Section 15.247 ( a1 ) Band Edge Measurement Section 15.247 Maximum Output PowerSection 15.247 ( b1 ) Out of Band EmissionSection 15.247 ( d ) Radiated Emission in Restricted Band Section 15.247 ( d ) Conducted Emission on AC Mains Section 15.207 RF ExposureSection 15.247 ( i ) Antenna RequirementSection 15.203 See note 1 Note 1 :The EUT uses a permanently attached antenna, which in accordance to Section 15.203, is considered sufficient to comply with the provisions of this section. Remark: N/A - Not Applicable ReportNo.: 60.870.12.023.01F Page 7 of 30 TÜV SÜD Hong Kong Ltd. 3/F, West Wing, Phase 2, 10 Science Park West Avenue, Shatin, Hong Kong 3.0Test Methodology 3.1Radiated Emission The sample was placed 0.8m above the ground plane on a standard emission test site *. Measurements in both horizontal and vertical polarities were performed. During the test, each emission was maximized by: having the EUT continuously worki…

Text truncated - open the document above for the full version.