A4Tech rhp-7 User manual

Enjoy Hi-Fi music beyond boundary!
www.a4tech.com
User’s Guide
Model : RHP
-
7

1
Federal Communication Commission Interference Statement
This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a residential installation.
This equipment generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause harmful interference
to radio communications. However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does cause harmful interference to
radio or television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one of the
following measures:
. Reorient or relocate the receiving antenna.
. Increase the separation between the equipment and receiver.
. Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
. Consult the dealer or an experienced radio/TV technician for help.
FCC Caution:To assure continued compliance, any changes or modifications not
expressly approved by the party responsible for compliance could void the user's authority to
operate this equipment. (Example - use only shielded interface cables when connecting to
computer or peripheral devices).
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.

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INTRODUCTION
The 3D Stereo Wireless Headphone is of the latest
wireless technology. Its 3 Channel FM Stereo
Technology enables emitting signals travel easily
through walls and floors, delivering high-quality
stereo sound effect. No matter you are operating
your computer, watching TV, VCD, DVD, or enjoying
any audio sound and music, this wireless headphone
is so convenient that you would love to use it, even
when you are working or doing exercise.
Enjoy total freedom of sound without a physically
restricting cable at an affordable price. Try this
fantastic 3D Stereo Wireless Headphone and set
yourself free to enjoy Music beyond boundary!
FEATURES
Transmitter:
●Three selectable FM Stereo Technology channels:
CH1 CH2 and CH3
●Noise Filter Function
●Charge Output Jack for Headphone Charging
●Audio-In Jack for Audio Cord connecting Audio
Source,ideal choice for all types of music and TV
applications
●Power On Indicator: Green LED Light
Headphone Receiver:
●stereo, supra-aural, wireless RF headphone system
●Self-Adjustable Headband for fitting
●Auto Power Off Function
●Range of up to 100 meters
●Built-in Charging Capability
●Stereo Indicator: Red LED Light
●Tune Wheel for Best Channel Reception
●Volume Control
HEADPHONE RECEIVER
Tune Wheel
Volume Control
Charge Input

3
INSTALLATION OF TRANSMITTER
1) Connect the supplied AC/DC power adapter to an
electrical power source or wall outlet.
2) Plug the AC/DC power Adapter into the DC jack
located on the rear of the transmitter.
3)
There have two operations to connect transmitter.
You can choice any using way.
zOne is locate the audio cable connected AUDIO
IN B socket at the rear of the transmitter.
The OD 3.5 mm plug provided can be connect your
PC Case.
zOther way is take RCA cable connect AUDIO IN
A socket at the rear of the transmitter. RCA
type phone jacks located on the audio source
back of TV, CD, VCD, DVD. Then insert the red
and white RCA plug ends into the equipment
jacks marked "Audio Out " to make the audio
source connection.
Note: The Noise Fitter has the effect merely to
Audio Socket A.
AUTO POWER OFF FUNCTION
The transmitter will have its power automatically
cut off few minutes upon turning off the equipments.
INSTALLATION OF HEADPHONE RECEIVER
1) Open the battery compartment cover on the left
headphone
2) Insert two AAA size Ni-MH rechargeable batteries
DC Jack
Channel
Noise Filter
Audio Socket
B With PC
Audio Socket A
Power On Indicator
Green LED light
Charge On Green
LED light

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with Both battery’s positive(+) side on top.
3) Replace the cover and your headphone is ready to
use.
HOW TO CHARGE
●Connect the supplied power cord to the charge out
port located on the rear of the transmitter.
●Place the headphone receiver on the transmitter
stand at their correct position and ready to
auto-charge.
●Power off indicator light “Red” on is a signal for
low battery and required charging.
●Power off indicator light “Red” off is a signal
for full battery and ready to use.
OPERATION
●Turn on your audio source (computer or other audio
source) to which the transmitter is connected.
●The Wireless headphone is auto working ON when you
ware it(The switch adjuster is auto TUNE ON).
●Power Indicator “Green” light on, the battery is
on use.
●Place the headphone on your head and adjust the
headband to comfortably fit your head and ears.
●Select a perfect Channel for reception: CH1 CH2
or CH3
●Tune the frequency adjustment control wheel
located
on the right headphone’s rear part until the Stereo
Indicator with “Red” light on, Stereo sound is
available on its best reception.
●Tune the Volume Control to your desired listening
level.
●Switch the Noise Filter which on transmitter to
ON to delete uneasy noise.
Battery Door

5
SPECIFICATIONS
Transmitter:
Transmission Mode: UHF Stereo
Auto Cut-Off Transmission
Charging Output
Modulation: FM Stereo
Power Supply: DC 12V 300mA
Power Consumption: 280mA (Included charge current)
Audio Input Plug: 3.5mm
Modulation Degree: 60±2 KHz (Condition: Audio Input
level: 600mVrms at 1KHz)
Transmission Power: MAX: -15dBm
Auto Turn on Transmission Audio Level: Min 50mVrms
Frequency Channel 1: 912.5 MHz± 200KHz
Frequency Channel 2: 913.0 MHz± 200KHz
Frequency Channel 3: 913.5 MHz± 200KHz
Transmission Band Width Range: 300KHz
Receiver:
Carrier Frequency: 912-914 MHz
Operating Voltage 1: 2.4V 2 ×AAA Ni-MH
Operating Voltage 2: 3.0V 2 ×AAA alkaline
Frequency Response: 20Hz – 20KHz
Signal Noise Ratio: ≧55 dB
Distortion: 1.5%
Channel Separation: ≧30 dB
Operation Maximum: 52M (in open space w/o boundary)
NOTE: Changes or modifications not expressly
approved by the party responsible for compliance to
the FCC Rules could void the users authority to
operate this equipment.
CHECKAND RESET
No Sound
Ensure the AC adapter is fully inserted into the AC outlet
and into the power connection input on the transmitter.
Ensure the headphone ON/OFF switch is in its ON position.
Headphone batteries may be too low. Charge batteries.
Ensure the computer or other audio source is on and tuned
to a channel with audio.
Adjust the volume control on the headphone to turn up
the volume.
The connected audio/video equipment is not playinq (CD,
T0ape, etc.). Check the audio source.
Distortion
The volume of headphone is low, adjust the volume to your
listening level again
Ensure the stereo indicator light is on. If not, adjust
the tuning control on the headphone until the indicator
light “Red” is on.
Headphone batteries may be too low. Charge the batteries
or replace with new ones if they do not charge
The headphone is too far from transmitter, move closer
The input level of the audio signal is too low. Turn up

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the volume of the audio source equipment.