Joyshiya BL-8008A - User Manual

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B L - 8 0 0 8 B

TV hearing aid

Manual

BL-8008 Manual

Comments

A. Product instruction

B. Product parts
C. Part function
D. Product manual

E. Technology parameters
F. Problems and solutions
G. Notes

1. What is TV hearing aid

2. T
3. Features
4. Functions

4.1 TV hearing aid function
4.2 Normal hearing aid function
4.3 Wired hearing aid function

5. Who need TV hearing aid

1. TV hearing aid function instruction
2. Normal hearing aid function instruction
3. Wired hearing aid instruction
4. Use normal hearing aid function to listen

telephone instruction

5. Use normal hearing aid function to listen to mobile phone instruction
6. Computer chatting instruction
7. Charging instruction

heory

2. Theory

BL-8008 Manual

A. Product instruction

1. What is TV hearing aid

TV hearing aid is specially designed for hearing disable people to listen to TV (or

other audio devices). It can help to listen to TV sound clearly while other hearing

aids can't do it. In the market, hearing disable people can only find normal wireless

headphone for watching TV, the worst thing is that it will make the hearing ability

worse and worse by only adjust the volume louder for a long time. TV hearing aid

can solve above problems.

Besides strong wireless TV listening function, it is a perfect hearing aid and a

wired hearing improving headphone. You can connect it with normal telephone,

mobile phone, listening to music, listening to radio, etc.

TV hearing aid use IR wireless technology, TV sound is transmitted

to receiver user's wearing, this will make the receiving efficiently,

and avoid interference of noise and avoid receiving noise around

which normal hearing aid can not identify, when target audio source

is far, noise from audio source and around audio source is difficult to

identify and are amplified together. IR technology can avoid the

interference of RF signal, and makes the receiving more stable, sound

quality purer.

3. Features

BL-8008 Manual

3.1 Transmitter part, use special circuit for hearing disable people,

to get high quality audio sound.

(1) Special noise reduction circuit, reduce background noise, make

the sound clearer.

(2) Frequency raise circuit.

(3) Limit strong signal circuit.

(4) Big power super far IR transmitter.

(5) Li-ion charge and auto switch off function.

3.2 Receiver part

(1) High S/N, noise reduction function.

(2) Balance adjustment.

(3) Frequency response function.

(4) Normal hearing aid function.

(5) Wired headphone with hearing aid function.

(6) Li-ion battery design, long time to use.

BL-8008 Manual

4. Functions

4.1 TV hearing aid function (transmitter + receiver)

(6) Li-ion base charger, save money, protect environment, easy to use.

(7) 1 transmitter can match several receivers, for several people to use

in the same time.

(8) Receiver in smaller and light weight design, comfortable to use,

weight of receiver: 55g.

(9) In ear design for receiver,

Features:

(1)Help hearing disable people to listen to TV sound clearly from far distance,

without turning up the volume and disturbing other people, and avoid listening

ability becoming worse by listening strong volume for a long time.

(2) Automatic signal control: hearing disable people's adaptive faculty for volume

change is weak (can't bear loud sound, and can't hear low volume sound), our circuit

will adjust the sudden change volume and make the output volume stable, it will

avoid strong signal hurting user's listening.

(3) Voice clarifying circuitry: reduce background sound of TV, so that hard to hear

words and whispers

jump out

making television dialog easier to understand.

(4) Balance control: hearing disable people's hearing ability is the same, they can

adjust the left and right volume to be suitable for their own level.

(5)Tone control: in order to solver users' different sound frequency hearing ability,

they can adjust the

Tone

button to find the best feature, and hear the target

audio source clearly.

reduce the noise around more efficient.

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BL-8008 Manual

4.2 Normal hearing aid (receiver+microphone cable)

Features:

(1)Connected with microphone cable, the receiver is a hearing aid, microphone

can be shrunk and extended, users can select a distance to place the microphone, and

hearing other people clearly.

(2)Balance control: hearing disable people's hearing ability is not balance, they

can adjust the left and right volume to be suitable for their own level.

(3)Tone control: in order to solver users' different sound frequency hearing ability,

they can adjust the

Tone

button to find the best feature, and hear the target audio

source clearly.

4.3 Wired headphone with hearing aid (receiver + wired cable)

Features:

(1)Headphone with hearing aid design, hearing disable people can listen to

music, chat on internet, etc clearly, and solve the problem of wearing

normal wireless headphone to watch TV by adjusting the volume louder

for a long time , so as to make the hearing ability worse and worse .

(2)Balance function, please read 4.2.(2)

(3)Tone function, please read 4.2.(3)

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BL-8008 Manual

5. Who need TV hearing aid

1.Who need to buy TV hearing aid?

(1)People who wish to listen to TV program clearly without disturbing other

people and neibours, and avoid listening becoming worse.

(2)People who use hearing aid, this product can be as normal hearing aid.

(3)Normal listening ability people who don't want to disturb others

and who want to protect listening and improve listening clarity.

(4)TV hearing aid is with function design and adjustment for TV

watching people (balance adjustment and frequency adjustment), it

is first selection of high quality TV headphone for protecting listening.

BL-8008 Manual

Transmitter

¡¢

Receiver

¡¢

Audio cable for tranmsitter

¡¢

Microphone

¡¢

cable

Audio cable2

¡¢

Wired headphone cable

¡¢

BL-8008A

(for one receiver)

BL-8008B

(for two receivers)

BL-8008B

BL-8008A

BL-8008

B. Product parts

Power adapter

¡¢

Balance adjusting driver

¡¢

Manual

¡¢

Earphone 2 sets

¡¢

DC12V

AUDIO IN

OFF ON

VOL

C I

LIN

E IN

BAL

VOL

TONE

OFF

ON OFF

TONE

(BAL)

(LINE IN)

MIC IN

BL-8008 Manual

C. Part function

Transmitter

¡¢

Receiver

¡¢

Charing indicator

Working indicator

Infrared tranmitting

window

Charging dock

Balance function

Wired cable jack

Charging jack

Infrared receiving window

Working indicator

BL-8008

ANT

D. Product manual

(1) Connect the power adapter to socket and transmitter's power jack.

(2) Connect the audio cable (3.5mm plug) to transmitter's audio-in jack,
connect other Lotiform plugs to AUDIO OUT jack of TV, DVD, STB,
etc, if it is computer, you need to connect lotiform plugs with Audio cable
2 , then connect the 3.5mm plug of

to earphone jack of

computer. If the product is used with STB, DVD, etc, please prior to
connect with STB, DVD, and don't connect to TV set directly. (Because
the manufacturers of TV are different, maybe there isn't audio out signal
for some TVs when connect to them directly.)

Audio cable 2

Power Adapter

Audio cable

Audio out

Connect to audio out of TV

Connect to audio out of STB

audio out

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BL-8008 Manual

(3) After make sure the transmitter and audio cables are connected well,
switch on the transmitter, the power indicator will be on, this means
transmitter is working. Face the transmitter's IR window to the receiving
area. Adjust the audio source in working status and turn up its volume
properly (when transmitter connects to STB, DVD, PC, etc)

(4)Make sure the receiver's IR window toward transmitter, switch on
the receiver, its power indicator will be on, then you will hear the
sound from transmitter, adjust the volume properly, if the volume is
not loud enough, please turn the volume of audio source louder until
the volume meets your requirement.

Audio out

Connect to audio out of DVD

Connect to audio out of PC

BL-8008

Note: Because this product adopts infrared wireless technology, when
you ensure that you have connected the parts well, please note as below:
a.Transmitter should be put on the higher place, like the top of TV.

C I

LIN

E IN

BAL

VOL

TONE

OFF

TONE

TONE

BAL

BAL

VOL

BAL

C I

LIN

E IN

BAL

VOL

TONE

OFF

(5)Frequency response: Rotate the

TONE

in best position, make sure

you can hear the TV sound clearly.

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(6)Balance adjustment: If the hearing ability of two ears is not the same,
you can use the adjust driver to adjust the BAL, make sure the
volume meets your requirement.

b.The infrared window of transmitter should be faced to the receiving

area.

c.The infrared window of receiver (ordinarily refer to the side with

logo) should be faced to the transmitter.

Noise will occur when run into the below situations:
a.There is obstacle between the transmitter and receiver.
b.The transmitter is put at a very low place.
c.The receiver is too far away from the transmitter, or deviation angle

is too large.

BL-8008 Manual

(7) After adjusting as above, you can hear the TV sound now. In
order not to disturb others, you can turn down the TV volume or turn it
to mute status.
Note: This product adopt IR technology, it will not receive TV sound
when you move to other rooms.

(8) Transmitter will come into standby state if there isn't sound input in
25 seconds, when you switch on TV or input sound again, the transmitter
will start to work. Receiver will be in mute when it is not in receiving
area, until it is back to receiving area.
Note: When Transmitter is in standy state, its power indicator will still
be on, IR lamps will be off automatically, please turn off the
transmitter if you don't use it.

2. Normal hearing aid function
(1) Only connect the receiver to cable
with microphone: plug the microphone
cable in MIC IN jack, extend the cable,
stick the microphone on the other end
near the person you are talking to.
Switch on the receiver, you will hear
other person's sound clearly. Adjust the
volume, tone, and balance according
to your requirement, so as to get best
effect.

(2) When you go out, take the receiver,
put the microphone cable in your pocket,
clip on the jacket, it can be as normal
hearing aid.

BL-8008

¶ú»ú¿×

LINE IN

3. Wired headphone with hearing aid
Plug the end of wired hedphone cable in LINE IN jack of reciver, and
connect the other end in audio sources like PC, Radio, MP3, etc, switch
on the

, you can hear sound from audio source. Please adjust the

volume, TONE, Balance according to your requirement.

receiver

4. Use normal hearing aid function to listen to telephone
According to

2. Normal hearing aid function

to adjust the hearing aid

function, put the microphone near speaker of telephone, please be close
to telephone while talking, then you can hear the sound from telephone
clearly. According to volume status,you can adjust the distance between
microphone and telephone's speaker, when the distance is shorter,
volume will be louder, you can adjust the position of microphone to meet
your requirement.

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5. Use normal hearing aid function to listen to mobile phone
According to

2. Normal hearing aid function

to adjust the hearing

aid function, put the microphone near speaker of mobile phone, don't be
too close to your mobile phone, otherwise there is some interference.
while talking, please face to the speaker of mobile phone.

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4.telephone

mobile phone

¶ú»ú¿×

Âó¿Ë·ç¿×

BL-8008 Manual

6. Computer chatting function
(1)Plug the microphone cable in the micro-in jack of
computer.

(2)

and the other end to earphone jack of

computer, switch on the

, you will hear the

sound whom you are talking to. Please adjust the
volume, TONE, Balance according to your
requirement. If the person at the other side can't hear
you clearly, please be close to the microphone and
adjust the computer microphone volume to proper
position.

Connect one end of

with

receiver,

wired hedphone cable

receiver

7. Charging function
Connect the AC adapter with transmitter and power
socket, switch on the transmitter, plug the

the slot of transmitter, the charging indicator on
transmitter will be on, it start to charging battery. After
4 hours, Li-ion battery is full, charging function will be
closed automatically, and the charging lamp will be
dump, this will protect the Li-ion battery and circuit
safety. It is better to turn off the audio source or pull
off the audio input cable to make the transmitter stop
signal transmission and only in charging function.

receiver

1.Please charge battery after its power is run out in the first three charging. You
needn't charge frequently, it is better to charge when power is nearly run out.

2.Please make sure the direction of charging slot and

, don't plug the

back side toward forward, otherwise the battery is easy to be destroyed.

3.Please turn off the

when it is charging the battery.

receiver

Notice of charging:

E. Technology parameters

Transmitter

¡¢

Working voltage

orking current

working current

working current of input

Input Working currentof MIC

Maximum output power

3.7V (3.2V 4.2V)

Static w

3mA

Dynamic

45mA

Maximum

25mA

Input signal rage

100 mV 800 mV

20mA

Max. Gain of MIC

33dB

Receiving frequency

2.3MHz

0.02MHz

Distortion

S/N ratio

70dB

800mV / 25mW

LI-ion battery charging time

3~4h

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¡Ü

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¡Ý

Receiver

¡¢

Working time

Working voltage

12V

0.8V, 400mA

Working current

8mA

Standby current

4mA

Trans. frequency

2.3MHz

0.02MHz

Signal input limiting volt.

400mV

Signal standby starting volt.

50mV

Signal input standby volt.

40mV

Signal input frequency

20Hz - 20KHz

Signal input range

120mV-1.5V

Li-ion battery recharging current

125

5mA

Transmission distance

10M

No signal standby time

¡À

¡Ý
¡Ý

¡Ü

¡À

¡Ý

12 hours for TV hearing aid function,

12 hours for normal hearing aid

function.

25s

5s(when no signal put in ,the

tansmitter come into standby state

automatically))

¡À

BL-8008 Manual

F. Problems and solutions

3.Working environment

4. Storage condition

Working temperature: -10

60 degree, Working humidity: 10%

90%

Temperature: -30

90 degree, please don't let it be shocked, pressed, and wet.

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Phenomena

Causes

Solutions

No Sound

Audio cable is not connected in
transmitter well

connect them properly

Audio-out jack of audio source
is connected wrong

connect correct auio-out jack

The sound of audio source is not
turned on or it is in lower volume.
(when you use STB or DVD,PC,
etc,please turn the volume louder.)

Turn on the volume of audio source,
and adjust it to proper volume.

Infrared window of transmitter is
not faced receiving direction or it
is keep out by something.

Adust the position and direction of

transmitter,let it's Infrared window
face receiver's IR window, don't let
anything block the signal.

Receiver is not turned on or its
volume is adjusted to lowest
position.

Turn on the power, adjust the
volume.

Noise

The distance between receiver
and transmitter is too far .

Adjust their distance properly.

The power of battery in receiver
is too weak.

Put the receiver in charging slot of
transmitter and charge the battery.

Volume is
low

The volume from transmitter
is too low.

Adjust the volume of audio source.

The volume of receiver is too low. Adjust the volume of receiver.

Volume in
one side is
low

balance function is not
adjusted well.

Adjust the balance function
properly,make the receiver is
suitable for the listener.

There is obstacle between the
transmitter and receiver
The transmitter is put at a very
low place.
Deviation angle of receiver is too

large

Move away the obstacle.

Put the transmitter at a higher place.

Move to the receiver to the front
place of transmitter.

G. Notes

1. When you don't use the product, please turn off the transmitter and receiver, if

don t it use for a long time, please take out the adapter and cables and save them

properly.

2. Pull the adapter out of power socket before cleaning the product, don't use liquid

cleaner or spray cleaner on the product, please use dry cloth to clean the product.

3. Don't use the product near water, like washing pond, swimming pool, washing

machine, wet basement, etc.

4. The product can only be used properly under indicated power, if you use other

kind of power, the product may reject to start or burn out.

5. Please take out the cable out of power socket in storm weather, or not use for a

long time, to avoid the damage from thunder or electric shock.

6. Don't overload the power output, extend electric cable or assemble the

transmission receiver by yourself, and avoid fire or electric shock.

7. Please place the product far away from heat source, like stove, fire, heat emitter,

etc.

8. For family user, please put the product far away from microwave oven and

mobile phone to avoid unnecessary electronic wave interference.