Atom RF771 900MHz Scanning Receiver User Manual
Atom Industrial Limited 900MHz Scanning Receiver
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User Manual
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ATOMIC
Quick
Set-Up Guide
ADVW771 (RF8338-51)
900MHz
PLL Headphones
Digital Tuning
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Congratulations on the purchase of ADVW771 (RF8338-51) (900MHz) Stereo RF Wireless
Headphones to enjoy the revolutionary technology of Phase Lock Loop and Digital-tuning!
Please check the supplied component against the following list:
1 x Transmitter
1 x Headphones
1 x Power Supply (AC/DC 12V 200mA Adaptor for Transmitter)
1 x 3.5mm Stereo Audio Cord
1 x 3.5mm Y-connection Cord
1 x Charging Cord
FUNCTION KEYS
HEADPHONES
(1) Headbelt
(2) Ear Cushion
(3) Digital Volume Up button
(4) Digital Volume Down button
(5) Power LED Indicator
(6) Digital Tuning button
(7) Digital Power ON/OFF button
(8) Charging Socket
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10
L
eft Hand Side
Right Hand Side
1
2
3
4
5
7
8
6
3
(9) Battery Compartment
(10) Battery cover
TRANSMITTER:
Transmitter Front Side:
(11) Charging LED Indicator
(12) Power LED Indicator
Transmitter Rear Side:
(13) Channel CH1/CH2/CH3 Switch
(14) Audio IN Socket
(15) Charging Socket
(16) DC IN Socket
ACCESSORIES:
(17) 3.5mm Y-connection Cord
(18) 3.5mm Stereo Audio Cord
(19) AC/DC Adaptor
(20) Charging Cord
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12
14
16
15
13
17
18
19
20
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INSTALLATION
Please follow this quick set-up guide to ensure trouble free installation of your headphones.
Step 1:
Connect the 3.5mm Stereo Audio Cord (18) to the audio output socket (i.e. PHONE/
HEADPHONE 3.5mm socket) of your audio source, e.g. TV, HiFi, CD, DVD player etc.
*** If your audio source has 2 RCA output sockets (red and white in colour), use the 90mm
Y-connection Cord (17) for connection, if necessary.
Step 2:
Connect the other end of the 3.5mm Stereo Audio Cord (18) to the Audio IN Socket (14) at
the rear side of the transmitter.
Step 3:
Connect one end of the AC/DC Adaptor (19) to the DC IN Socket (16) at the rear side of the
transmitter, and the other end to the main electric wall outlet.
Step 4:
The transmitter will be automatically ON when there is audio signal from the audio source
(please make sure that the transmitter is powered on by the AC/DC adaptor in Step 3). Then
the Power LED Indicator (12) will glow GREEN to confirm that the transmitter is ready for
operation. Place the transmitter on a dry, cool place preferably above head level.
*** The transmitter has auto-cut-off function. When there is no audio signal for over 70+/-
10 seconds, the power of the transmitter will be automatically cut off.
Step 5:
Open the Battery Cover (10). Insert 2 pcs AAA size batteries into the Battery Compartment
(9) at the Left hand side of the headphones observing the correct polarity. Then close the
Battery Cover (10), and press the headphones ON (7), the Power led (5) glow red.
Step 6:
Switch on your music device (TV. HiFi, CD, DVD etc.) and start your media playing.
Step 7:
Press the digital-tuning Button (6) once until the Correct Channel of the headphones then you
can hear a good quality sound. Adjust the Volume UP / DOWN button (3,4) to a desired
level.
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CHANNEL SELECTION
There are 3 channels altogether for this PLL Headphone. At the rear side of the transmitter,
there is a Channel CH1/CH2/CH3 Switch (13).
Frequency Channel
912.40MHz CH1
913.00MHz CH2
913.60MHz CH3
The 3 different channels are auto-locked by the latest PLL technology, enable you to enjoy
the great sound quality in high stability.
POWER OFF
Press Power ON/OFF button (7) to off the headphones.
CHARGING THE HEADPHONES
Battery type: Rechargeable batteries AAA
No. of cells: 2pcs
Rated capacity: 300 mAH / 9 hrs
Rated DC output voltage (V): 2.4V
Rated DC output current (A): 60mA
Step 1:
Insert 2 pcs AAA size rechargeable batteries into the Battery Compartment (9) at the Left
hand side of the headphones.
Step 2:
Connect the transmitter to a conveniently located electric wall outlet with the supplied
AC/DC Adaptor (19).
Step 3:
Insert one end of the Charging Cord (20) to the Charging Socket (15) at the rear side of
transmitter and the other end to the Charging Socket (8) of headphones.
The batteries should be charged for a full 12 hours before use. During charging process, the
Charging LED Indicator (11) will glow RED showing the headphone is being charged.
*** Regular (non-rechargeable type) batteries can also be used to operate this headphone.
However, you must never attempt to charge non-rechargeable batteries in this appliance as
this could prove dangerous.
Step 4:
When the batteries have been charged, remember to remove the Charging Cord from the
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headphones.
*** Charging procedure should never exceed 48 hours.
Caution! To avoid risk of fire or injury, do not attempt to recharge non-rechargeable
batteries.
Replace only with the same or equivalent type recommended by the manufacturer. Please
dispose of old, defective batteries in an environmentally friendly manner in accordance
with the relevant legislation.
TROUBLE SHOOTING GUIDE
If you encounter any trouble in setting up the Headphones, please check the following points:
(1) Distorted sound quality or unclear sound:
~ Check if the sound of your audio source is distorted and whether the volume control is
tuned to the suitable level.
~ Check if the batteries in the headphones have insufficient power. Replace fresh ones if
necessary.
~ Check if you have selected the best channel, press the Digital tuning button (6) again to
check.
~ Check if the distance between the headphones and transmitter are within the effective
range. (The effective range of the device is approx. 100M in open area.) Place the
headphones closer to the transmitter.
(2) No Sound from the headphones:
~ Make sure that your audio equipment, the transmitter and headphones are properly
connected, powered and switched ON.
~ Check if the batteries are inserted properly into the battery compartment.
~ Check if the transmitter is powered on with the AC/DC adaptor: the Power LED Indicator
(12) will glow GREEN showing the transmitter is powered (only when there is audio
signal from the audio source).
~ Check if all the connection cords are properly connected.
(3) Mono Sound:
~ Check if the audio source is mono only, use stereo audio source.
(4) Interference:
~ At the rear side of the transmitter, there is a Channel CH1/CH2/CH3 Switch (13), select a
different channel and Press the Digital tuning button (6) once Then you can listen the
good quality sound.
(5) Power auto-cut-off:
~ The transmitter has auto-cut-off function. When there is no audio signal for a prolonged
period, the power of the transmitter will be automatically cut off. You just need to switch
on the audio sources again and press the Digital tuning button (6) once, Then you can
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listen the good quality sound again.
The ventilation should not be impeded by covering the ventilation openings with items,
such as newspaper, tablecloths, curtains, etc.
No naked flame sources, such as lighted candles, should be placed on the apparatus.
If you still have problem after checking the above points, please contact your customer
service. Do not try to loosen the screws of the products to fix the problem.
All the above are subject to our final change without further notice.
Copyright by Atom Industrial Ltd.2003
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SPECIFICATION
Model ADVW771 (RF8338-51) (900MHz)
Description Radio Frequency (UHF)
Wireless Headphones System
(Power Auto Cut Off/ Phase Lock Loop/ ALC function/
Rechargeable function)
Transmitter
No. of Channels 3
Carrier Frequency Channel 1: 912.40MHz
Channel 2: 913.00MHz
Channel 3: 913.60MHz
Effective Range 100 meters
Power Supply AC/DC Adaptor
Headphones
Frequency Responses 20 - 20,000 Hz
Signal to Noise Ratio 50dB
Distortion <1%
Channel Separation 30dB
Power Supply 2 x 1.2V AAA size rechargeable batteries OR
2 x 1.5V AAA size normal batteries (Optional)
System Included: 1 x Transmitter
1 x Headphones
1 x AC120V DC 12V 200mA (UL) Adaptor for
transmitter
1 x 3.5mm Stereo Audio Cord
1 x 3.5mm Y-connection Cord
1 x Charging Cord
Operation is subject to the following two conditions: (1) this device may not cause
interference, and (2) this device must accept any interference, including interference that may
cause undesired operation of the device.
Warning: 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.