User Manual - Harris Communications
Contents
1. DH900 2 4GHz WIRELESS DIGITAL HEADSET User Manual INTRODUCTION This 2 4GHz DIGITAL WIRELESS CHIN HEADSET uses latest digital wireless technology and enables to improve the hearing aid capability that may required by the elderly people to enjoy crystal sound stereo music and TV sound anywhere inside your home Simply connect the transmitter to a desired audio source DVD player CD player TV set Hi Fi system or iPod Without complicated wiring and installation the system enables you to enjoy thrilling lifelike sound in minutes FEATURES 2 4GHz Digital Hopping System Technology Docking Charge Mechanism RF Transmission Auto Off when without audio signal Music Muting for Verbal Communications Speed Charging Mechanism Spare Battery Charging Design Microphone Adapter for sound pick up from audio source Adjustment of Sound Balance O Ne 0 On RB Or NS Adjustment of Treble Tone Clarity COMPONENT PART LIST Headset Receiver Transmitter Polvmer Lithium Rechargeable Batterv x 2 pieces AC DC Adapter RCA Adapter Cable Audio Cable both ends with 3 5 mm stereo plug 6 3 mm to 3 5 mm Adapter Plug 00 AO JOE JB DD External Microphone Function Identification Headset Receiver WT Sett FRON Right Adjustable Earbud ag Left Adjustable Earbud Volume Control B LED Indicator of Power Signal Mute Button for Verbal Communications Power On Off Switch2. Microphone Sound Balance Control Left Middle Right Battery BANKA Function Identification Transmitter bi Ta _ AN pe y amp t Les OT DCIN ON OFF IDE xg REAR 8 9 Charging Cradle LED Indicator of Tone Claritv Tone Claritv Button LED Indicator of Power Signal LED Charging Indicator for Main Batterv attached to Headset Receiver LED Charging Indicator for Spare Batterv Spare Charging Slot DC In Power ON OFF Mono Stereo Switch 3 5mm Audio In Socket cn O7 OO DO Ne gt Oo INSTALLATION TRANSMITTER 1 Connect the Power Adapter to the DC IN input Socket located on the transmitter rear panel 2 Connect the Power Adapter provided to an Electrical Outlet 3 RCA Adapter Cable Audio Cable 6 3 mm to 3 5 mm Adapter Plug External Microphone and are provided for various type of connection to your Audio Source e g TV set Hi Fi system MP3 or iPod 4 Behind the Transmittter select the Power ON OFF Switch to ON position The Green Power Indicator LED will blink as soon as you have connected the Power Adapter to the Electrical Outlet When the Audio Signal is detected from the Audio Source and the Green LED Indicator will glow constantiv HEADSET RECEIVER 1 e Insert a battery into the Headset Receiver with correct Polarity OPERATION 1 Switch on the Audio Source TV set or audio co
3. ace them with fullv charged batteries The Headset Receiver mav be too far awav from the Transmitter Move closer to it The Audio Signal input level is too low Increase the volume from the audio source In case the headset receiver cannot be linked with the transmitter Please follow the following procedure for Pairing 1 2 3 Turn OFF the power of the Transmitter Turn ON the Headset Receiver Press and Hold the MIC Button for about 5 seconds the Green LED flash quickiv in the Headset Receiver then turn ON the power of the Transmitter 4 The Headset Receiver and the Transmitter is then Paired automatically and the Green LED on Headset Receiver lights steadilv
4. l then glow in Red constantiv It will glows in Green about 2 hours after it is fully charged WARNING Never attempt to recharge conventional drv cells Batteries batterv pack or batteries installed shall not be exposed to excessive heat such as sunshine fire or the like Never use another tvpe of batterv or non rechargeable batteries to replace the rechargeable batteries supplied When the headphones are not in use move the switch to the OFF position to avoid damaging the batteries The batteries must alwavs be fullv charged before first use An initial 3 hours charge is required to guarantee an acceptable service life for the rechargeable batteries Alwavs ensure that the Headphone Receiver is switched to OFF position while the batteries are charging Excessive sound pressure from earphones and headphones can cause hearing loss IMPORTANT This unit should be operated with rechargeable batteries only When replacing the batteries or when disposing of the unit always complv 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 TONE CLARITY When necessary Tone Clarity to Headset Receiver can be adjusted on the Transmitter from orange LED of 1 2 and 3 Simply press the Tone Clarity Button to select and match to your level of hearing aid capability The Tone Speech Intelligibilit
5. mponent that the Transmitter is connected to The Green LED Indicator will glow constantly 2 Select the On Off Switch in the Headset Receiver to ON position then the Green Signal LED Indicator glows 3 Adjust the Volume for desired sound level then place it on the head 4 The signal Green LED Indicator on the headphone will blink slowly with Beep in every minute when the battery level is low Recharge the battery NOTE Make sure the batteries provided in the packing is fully charged before first use Charge the batterv for about 3 hours before first use RF Transmission of the Transmitter will automaticallv switch OFF in approximatelv 5 minutes if there is no Audio Signal or the Signal that it receives from the Audio Source is too weak for proper reception However if the Signal returns to an acceptable level the Transmitter will automaticallv switch ON again CHARGING THE BATTERIES 1 Select the On Off Switch in the Headset Receiver to OFF position l 2 Place the Headphone Receiver on the Transmitter make sure the Charge Contact touches the Charge Pins on the Transmitter 3 The Charging process starts automatically LED Indicator of Main Battery then glows in g Red constantiv It will glows in Green about 2 hours JIR after the batterv is fullv charged 4 Aspare battery is provided for sustained enjoyment Simply insert it into the Transmitter for Charging LED Indicator of Spare Battery wil
6. y can be enhanced individually on the transmitter with the following settings Setting Orange LED Indicator Effect Default No Adjustment Enhances Treble and Bass Enhances Treble only Enhances Bass only TECHNICAL SPECIFICATIONS Transmission mode Digital Hopping System Carrier frequency 2 4GHz ISM BAND Operating voltage Transmitter 5V 550mA Receiver 3 7 V 350 mA Lithium Polvmer Batterv Frequencv response 30 Hz 20 KHz Distortion lt 0 5 Signal to noise ratio gt 75 dB Range Up to 25 meters open area TROUBLESHOOTING NO SOUND Ensure that the mains adapter is pushed fullv into the power outlet and that its cable is properlv connected to the DC IN connector on the transmitter Ensure that the Headset Receiver Power ON OFF switch is switched to ON The charge level of Batterv inside Headset Receiver mav be too low Recharge the batterv or replace them with fullv charged batteries Ensure that the TV set Hi Fi system or audio component is switched ON and set to a channel that broadcasts an audio signal Use the Volume Control on the Headset Receiver to increase the sound level The connected audio video equipment mav not be in plavback mode Start playback on by the equipment The Headset Receiver output level is set too low Adjust the volume to a suitable level DISTORTION The charge level of Batterv inside Headset Receiver mav be too low Recharge the batterv or repl
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