Jaycar Electronics AA2079 User manual

TV Hearing Aid Earphones
Manual

Manual
Contents
A. Functions
B. Product parts
C. Part function
D. Product use
E. Specifications
F. Troubleshooting
G. Notes
TV hearing aid function
1. TV hearing aid function instruction
2. Normal hearing aid function instruction
3. Wired hearing aid function instruction
4. Use normal hearing aid function to listen to
telephone instruction
5. Use normal hearing aid function to listen to mobile
phone instruction
6. Computer chatting instruction
7. Charging function instruction
function
Manual
TV hearing aid function (transmitter + receiver)
Features:
1. Help hearing impaired to listen to TV clearly from far distance, without turning
up the volume and disturbing other people.
2. Automatic signal control: hearing impaired people's adaptive faculty for volume
change is weak (can't bear loud sound, and can't hear low volume sound), the
circuit will adjust the sudden change volume and make the output volume stable,
it will avoid strong signal hurting user's hearing.
3. Voice clarifying circuitry: reduce background sound of TV, so that hard to hear
words and whispers jump out making television dialogue easier to understand.
4. Balance control: the two side hearing ability of a hearing disabled person may be
different, he or she can adjust the left and right volume to be suitable for his or her
own level.
5. Tone control: in order to solve users' different sound frequency hearing ability,
they can adjust the Tone button to find the best feature, and hear the target
audio source clearly.
6. One transmitter can match several receivers, for several people to use
in the same time.
7. Receiver in smaller and light weight design, comfortable to use,
weight of receiver: 55g.
8. In ear design for receiver.
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“ ”
A. Functions
01

Manual
1 Transmitter、
2 Receiver、
3 Audio cable for transmitter、
5 Microphone、cable
4 Audio cable 2、
6 Wired headphone cable、
B. Product parts
Manual
7 Power adapter、
8 Screwdriver、
9 Manual、
10 Earphone x 2 sets、

DC12V
AUDIO IN
OFF ON
VOL
MIC I N
LIN E IN
BAL
VOL
TON E
ON
OFF
ON OFF TONE
(BAL)
(LINE IN)
MIC IN
Manual
C. Part function
1 Transmitter、
2 Receiver、
Charging indicator Working indicator
Infrared tranmitting
window
Charging dock
Balance function
Wired cable socket
Charging socket
Infrared receiving window
Working indicator
Manual
L
R
ANT
D. Product use
(1) Connect the power adapter to a socket of the power source and the
transmitter's power jack.
(2) Connect the audio cable (3.5mm plug) to the transmitter's audio-in
socket, connect other plugs to AUDIO OUT socket of TV, DVD, STB, etc,
if it is computer, you need to connect the plugs with Audio cable 2 (RCA
cable) , then connect the 3.5mm plug of to the
earphone socket 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 (RCA cable)
Power Adapter
Audio cable
Audio out
Connect to audio out of TV
Connect to audio out of STB
TV
audio out
LR
1. TV hearing aid function instruction.

Manual
MIC I N
LIN E IN
BAL
VOL
TON E
ON
OFF
TONE
TONE
TO N E
BAL
BAL
VOL
BAL
MIC I N
LIN E IN
BAL
VOL
TON E
ON
OFF
LR
LR
(5)Frequency response: Rotate the TONE in the best position, make
sure you can hear the TV sound clearly.
“ ”
(6)Balance adjustment: If the hearing ability of two ears is not the same,
you can use screwdriver to adjust the BAL, make sure the volume meets
your requirement.
b. The infrared window of the transmitter should face the receiver.
Noise will occur when run into the below situations:
a. There is some obstacle between the transmitter and the receiver.
b. The receiver is too far away from the transmitter, or deviation
angle is too large.
MIC I N
'() *()
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X
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 the
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 faces toward the 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
In fr ar ed
wi nd ow
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.

MI C IN
Manual
(7) Transmitter will standby if there isn't audio signal in 25 seconds.
When you switch on TV or input signal, the transmitter will start to
work. Receiver will mute when it is not in receiving area, until it is
back to receiving area.
Note: when the transmitter is standby, 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 instruction
(1) Connect the receiver with 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. Adjust the volume, tone, and balance according to your
requirement, so as to get best effect.
(2) Put the microphone cable in your pocket, clip on the jacket, it can
be as normal hearing aid.
Manual
!" #
LIN E IN
MIC I N
MIC I N
3. Wired hearing aid function instruction.
Plug the end of wired headphone cable in LINE IN jack of receiver,
connect the other end with audio sources like PC, Radio, MP3, etc, switch
on the , you can hear sound from the audio source. Please adjust
the volume, TONE, Balance according to your requirement.
receiver
4. Use normal hearing aid function to listen to telephone instruction.
According to 2. Normal hearing aid function instruction”, put the
microphone near the speaker of a telephone, please be close to the
telephone while talking, you can hear the sound from the telephone.
According to volume, you can adjust the distance between microphone
and telephone's speaker, when the distance is shorter, the volume will be
louder, you can adjust the position of microphone to meet your
requirement.
“
5. Use normal hearing aid function to listen to mobile phone
According to 2. Normal hearing aid function instruction , put the
microphone near the speaker of a mobile phone, don't be too close to your
mobile phone, otherwise there is some interference. While talking, please
face to the speaker of the mobile phone.
instruction.
“ ”
4.telephone 5.mobile phone
Note: Will only work on some phones that have a 3.5mm audio outputs.

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$%&#
Manual
6. Computer chatting function
(1)Plug the microphone cable in the micro-in jack of a
computer.
(2)
and the other end to the earphone jack of the
computer, switch on the . Please adjust the
volume, TONE, Balance according to your
requirement.
instruction.
Connect one end of with the
receiver,
wired headphone cable
receiver
7. Charging function
Connect the AC adapter with the transmitter and a
power socket, switch on the transmitter, plug the
in the slot of transmitter, the charging
indicator on the transmitter will be on, it start to
charging battery. After 4 hours, Li-ion battery is
full, charging function will be closed automatically.
This will protect the Li-ion battery 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.
instruction.
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 .
3.Please turn off the when it is charging the battery.
receiver
receiver
Notice of charging:
Manual
E. Specifications
1 Transmitter、
Working voltage ~
orking current
working current
working current of input
~
Input working current of MIC
Maximum output power
3.7V (3.2V 4.2V)
Static w 19 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 1%
S/N ratio 70dB
800mV / 25mW
LI-ion battery charging time 3~4h
±
≤
≤
≤
±
≤
≥
2 Receiver、
Working time
Working voltage 12V 0.8V, 400mA
Working current 95 8mA
Standby current 10 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
±
±
±
±
≥
≥
≤
±
≥
12 hours for TV hearing aid function,
12 hours for normal hearing aid
function.
25s 5s(when no signal put in ,the
tansmitter comes into standby state
automatically))
±

Manual
F. Troubleshooting
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.
～ —
～
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 audio-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 its 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.
Manual
G. Notes
1. When you don't use the product, please turn off the transmitter and receiver, if
don t use it 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. Ensure the unit does not get wet.
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.
'