Uni Art Precise HP4390-001T Stereo Headphone Transmitter User Manual Owners Manual HP4390

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Document ID	844660
Application ID	/aPELyksDLaK5JIdCfAVBQ==
Document Description	user manual
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	12.03kB (150409 bits)
Date Submitted	2007-09-18 00:00:00
Date Available	2007-09-19 00:00:00
Creation Date	2007-09-10 16:13:59
Producing Software	Acrobat Distiller 7.0.5 (Windows)
Document Lastmod	2007-09-10 16:13:59
Document Title	Microsoft Word - Owners Manual - HP4390.doc
Document Creator	PScript5.dll Version 5.2
Document Author:	Tracy.Qi

INTRODUCTION
Cordless Stereo 900MHz
This 900 MHz compact stereo headphones takes advantage of the very latest
advances in wireless transmission technology so that you can listen to music or the
Headphone System
sound from your TV set both in the house and outdoors. All you have to do is
connect the transmitter to any audio source: DVD player, CD player, TV set, VCR,
Hi-Fi system or radio (range 50 meters).
FEATURES
1.
Auto Scanning system on headphone
2.
Phase Lock Loop (PLL) transmission system on transmitter
3.
Automatic battery recharging (batteries supplied).
4.
900 MHz RF technology.
5.
RF technology leaves you completely free to move around.
6.
Transmission is not restricted solely to line of sight.
7.
Rechargeable receiver headphones.
8.
Charger built into the transmitter.
9.
High quality stereo sound that is virtually interference-free.
10.
Automatic Level Control (ALC) and Auto On/Off function.
User's Manual
COMPONENT IDENTIFICATION
COMPONENT IDENTIFICATION
FRONT VIEW
RF transmitter
RF receiver headphones
Power On/Off switch
Power On indicator light
Rechargeable batteries (LR03/AAA size)
Charge contacts
12 V 200 mA mains adapter
Jack plug adapter (3.5 mm/6.3 mm diameter)
RCA socket audio adapter
10
Operating indicator light
11
Charge indicator light
12
Audio connection cable with 3.5 mm jack plug
13
Volume control knob (VOL)
14
AUTO SCAN indicator
15
AUTO SCAN button
16
Channel selector (CHANNEL 3 2 1)
17
DC IN connector
18
Audio input cable
REAR VIEW
INSTALLATION
TRANSMITTER
1.
Connect the mains adapter provided to an electrical outlet.
2.
Connect the mains adapter cable to the DC IN input connector located on
the transmitter rear panel.
3.
A cable is provided from the transmitter rear panel that can be connected to
NOTE:
the audio outputs (Left and Right) present on a TV set, Hi-Fi system, VCR or
You should then be able to move around freely from one room to another without
radio-cassette player, or to a headphones/earphones output using the connector
any interference. If interference does occur (interruptions in the signal), press the
supplied.
"Auto Scan" button once to find a better reception channel.
The red Auto On indicator light will light up as soon as you have connected the
transmitter when you press the "Auto Scan" button.
power adapter to the mains outlet and the audio cable to a signal source. If the Auto
On indicator light remains off, switch on the audio source and increase its output
For better stereo reception, stay approximately seven meters away from the
If it is impossible to find a satisfactory frequency, change the setting on your
transmitter, then press the "Auto Scan" button on the headphones to find the
level until the red indicator light comes on.
corresponding channel.
RECEIVER HEADPHONES
To both protect the transmitter and save power, the transmitter automatically
1.
2.
Open the cover of the battery compartment located on the right hand receiver
switches off after approximately four minutes if the signal that it receives from the
headphone.
audio source is too weak for proper reception. If however the signal returns to an
Insert two rechargeable LR03/AAA size batteries taking care to ensure
acceptable level, then the transmitter automatically switches back on.
correct polarity.
3.
Close the battery compartment cover.
OPERATION
1.
CHARGING THE BATTERIES
1.
Place the On/Off switch on the receiver headphones in the Off position.
2.
To recharge the headphone batteries, place the headphones on the transmitter,
Switch on the sound source (TV set or audio component) that the transmitter
taking care to ensure that the charge contacts touch the transmitter's charge
is connected to.
prongs.
2.
Place the headphones On/Off switch in the On position.
3.
Place the headphones on your head and adjust the volume to obtain the
Be sure to charge new batteries for 24 hours before using them for the first
desired sound level.
time in the headphones.
4.
3.
The charge process starts automatically and the green indicator light comes on.
If you cannot find the best reception frequency, press the "Auto Scan" button
on the headphones. The corresponding indicator light will come on.
WARNING:
REPLACING BATTERIES
Never attempt to recharge conventional dry cells.
Rechargeable batteries have a long service life. If it is however necessary to replace
Never use another type of battery or non-rechargeable batteries to replace the
them, proceed as described below:
rechargeable (LR03/AAA) batteries supplied. When the headphones are not in use,
move the switch to the OFF position to avoid damaging the batteries.
Carefully
The batteries must always be fully charged before use. An initial 24 hour charge is
around the left and right headphones.
required to guarantee an acceptable service life for the rechargeable batteries.
Install the new batteries in their housings
Always ensure that the headphones are switched to the Off position while the
as illustrated. Check for correct +/-
batteries are charging.
polarity.
IMPORTANT:
Bring the cloth padding up over the
This unit should be operated with rechargeable batteries only. When replacing the
sloped guide slot. Hold it in place with
batteries or when disposing of the unit, always comply with applicable laws
your thumb just after the slope to ensure
relating to the disposal of batteries. Please place them in a proper disposal container
that it does not leave the guide.
remove
the
cloth
padding
to ensure that they are eliminated safely and in an environmentally-friendly way.
Thank you.
Turn the padding as illustrated. It will slide
into the guide slot by itself. Keep turning it
until it is correctly in place. Once it has
taken on an oval shape, then it is
correctly positioned.
Only use rechargeable batteries of the type specified under the “Technical
specifications” heading.
The rechargeable batteries supplied with the headphones must absolutely not be
taken apart, disposed of in an open fire or short circuited.
TECHNICAL SPECIFICATIONS
TROUBLE SHOOTING
NO SOUND
Transmission mode
: UHF stereo
Carrier frequency
: 900MHz
Operating voltage
: Transmitter – 12 V 200 mA
Ensure that the mains adapter is pushed fully into the power outlet and
that its cable is properly connected to the DC IN 12V connector on the
Receiver
– 2.4 V (two rechargeable batteries,
LR03/AAA size)
Frequency response
: 30 Hz – 11 KHz
Distortion
: <1.5%
Signal-to-noise ratio
: >50 dB
Channel separation
: 30 dB
Range
: 50 meters (open area)
transmitter.
Ensure that the headphones On/Off switch is switched to the On
The headphones battery charge level may be too low. Recharge the
batteries or replace them with fully charged batteries.
Ensure that your TV set, Hi-Fi system or audio component is switched
on and set to a channel that broadcasts an audio signal.
Use the headphones volume control to increase the sound level.
The connected audio/video equipment may not be in playback mode.
Start playback on by the equipment.
Caution:
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
suitable level.
DISTORTION
interference, and (2) this device must accept any interference, including
interference that may cause undesired operation of the device.
The headphones output level is set too low. Adjust the volume to a
Ensure that the "Stereo" indicator is lit. If not, adjust the tuning control
(Auto Scan) on the headphones until it lights.
Use the channel selector to change the transmitter's transmission
frequency. Then you will need to adjust the tuning control on the
headphones until the "Stereo" indicator comes on.
The headphones battery charge level may be too low. Recharge the
batteries or replace them with fully charged batteries.
Ensure that the volume knob setting is correct.
The headphones may be too far away from the transmitter. Move closer
to it.
The audio signal input level is too low. Increase the volume
from the audio source.

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