Radio Shack 4005029T 900MHz Transmitter for Wireless Headphone User Manual

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Document ID	282612
Application ID	YAr64Ao8u7scK+odGQdpgg==
Document Description	User Manual
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	27.11kB (338840 bits)
Date Submitted	2002-11-11 00:00:00
Date Available	2002-11-11 00:00:00
Creation Date	2002-10-30 10:15:47
Producing Software	Acrobat 5.0 Scan Plug-in for Windows
Document Lastmod	2002-10-30 10:16:08
Document Title	User Manual
Document Creator	Acrobat 5.0 Scan Plug-in for Windows

Cat. No. 40-5029
STEREO 900 MHz WIRELESS SPEAKER SYSTEM
Your RadioShack 900 MHz Wireless Stereo Speaker System use the 900 MHz band to
deliver high-quality stereo sound to almost anywhere in or around your home. Your Speaker
System‘s three selectable channels, PLL (Phase-Locked Loop) circuitry and built-in antenna
give you precise tuning, so you can enjoy your favorite sounds without disturbing others
while you exercise or work around your yard or house — up to 150 feet away from your
stereo. ‘
Power/Transmltter Indicator _ lights green when the AC adapter is oorrectly plugged in
and the audio signal is input to the transmitter.
Power/Speaker Indicator_ lights green when the AC adapter is correctly plugged in ‘
CONTROL LOCATIONS ‘
TRANSMITTER l
1) LED Indicator (Power ON) l
2) Channel Selector ;
3) STEREO/MONO Selector l
4) AUDIO IN Jack (L, R) l
5) DC Input Jack
SPEAKER 1
6) LED lndicator (Power ON) l
7) Tone Control Knob
8) Power OFF and Volume Control Knob
9) DC Input Jack
10)Lefl/Right MODE Switch
11)Channel Selector
12)Battery box
PREPARATION
CHOOSING A LOCATION
Many factors affect the range of your system. To achieve the best performance:
0 Ffosmon the transmitter as far as possible from other electronic devices such as TVs.
receivers, or VCRs. Radio interference from these devices could affect your system‘s
performance.
. Position the transmitter away from large metal objects, as these could block your
transmitter's signals.
- Try several locations for the transmitter. Select the location that provides the best
performance.
Your system's overall performance depends on your home's construction method, the other
devrces near the system, and other devices near the system, and other radio frequency
sources in your home (such as cordless telephones).
INSTALLING THE TRANSMITTER
You need “to properly set up the transmitter to send a wireless signal to the speakers. There
are two things you must do. First, provide power to the transmitter, and second, connect the
transmitter to the audio Source.
A) CONNECTING Ac POWER
Use the supplied 12V, 250mV AC adapter to connect the transmitter to AC power.
Cautions:
0 You must use a Class 2 power source that supplies 12 volts DC and delivers at least
250mA. Its center tip must be set to positive and its plug must fit the transmitter's DC 12V
jack. The supplied adapter meets these specifications. Using an adapter that does not meet
these specifications could damage the transmitter or the adapter.
0 Always connect the AC adapter to the transmitter before you connect it to AC power.
When you finish, disconnect the adapter from AC power before you disconnect it from the
transmitter.
Plug the supplied AC adapter‘s barrel plug into the transmitters DC 12V jack, then plug the
adapter into a standard AC outlet.
B) CONNECTING TO AN AUDIO SOURCE
You can connect the transmitter to your audio source’s left and right audio output jacks or its
headphone jack.
Caution:
- Do not connect the transmitter to your audio source's speaker output. Doing so could
damage the transmitter and audio source.
- If you connected the transmitter to an audio source’s headphone jack, set the audio
source’s volume control to its mid—position.
1. Connect one end of the supplied audio patch cord to the transmitters audio jacks (white
plug to L AUDIO IN and red plug to R AUDIO IN).
2. If you are using the audio source's output jacks, connect the white and red plugs at the
other end of the patch cord directly to the audio source‘s corresponding left (white) and
right (red) audio jacks.
If you are using your audio source's stereo headphone jack, connect the patch oord‘s
white and red plugs to the white and red phono jacks on the supplied adapter.
. lfyour audio source has a 1/8-inch headphone jack, insert the adapter’s 1/8-inch stereo
plug into the audio source’s HEADPHONE jack.
. if your audio source has a 1/4-inch headphone jack, insert the adapter's 1/8-inch stereo
plug into the back of the supplied 1/8-to-1/4-inch stereo ada ter. Then in rt th ‘
the audio source‘s HEADPHONE jack. p se e adapter Into
C) MODE SWITCH
For normal stereo use, set the STEREO/MONO switch at the rear of the transmitter to
STEREO posttion . If you are using a monaural system, set the switch to MONO position.
INSTALLING A SPEAKER
CONNECTING POWER
A) DC OPERATION (BXD SIZE 1.5V ALKALINE BATTERIES)
Open the battery cover located at the back of the speaker unit. Insert the batteries making
sure it is correct and good contacted with the coil springs inside the compartment. Replace
the battery cover making certain the cover is secure prior to moving the Speaker.
Note: Be sure the battery cover is secure a falling battery could cause personal injury or
damage to equipment.
B) AC OPERATION
. Insert the power cord of the large sized 12V 1800 mA AC Adapter (provided) into the DC
IN Jack located at the back of the Speaker unit.
0 Plug the other end of the AC Adapter into a conveniently located electrical wall outlet.
C) MODE SWITCH
For normal stereo use, designate one Speaker as LEFT channel and the other as
RIGHT channel. Simply set one Speaker to “L" for Left and one to “R” for Right.
Follow the same steps, as completed above, for the other Speaker.
OPERATION
To protect your hearing, follow these guidelines when you use the speaker system.
0 Set the volume to the lowest setting before you begin listening, adjust the volume to a
comfortable level.
. Do not listen at extremely high volume levels. Extended high~volume listening can lead
to permanent hearing loss.
0 Once you set the volume, do not increase it. Over time, your ears adapt to the volume
level, so a volume level that does not cause discomfort might still damage your hearing.
Follow these steps to obtain maximum listening performance
1) Make sure that your transmitter and speaker are set up awarding to the procedures given
in this manual.
2) Turn on your audio source.
Refer to TRANSMISSION AUTO ONIOFF below for the transmitter operation.
3) Switch the transmitter to a frequency channel (Channel 1, 2, or 3) that has no
interference.
Refer to CHANNEL SELECT below.
4) Slide the CHANNEL switch at the rear of the Speakers to select the same channel
(channel 1, 2, or 3) selected on the transmitter.
5) Tum on each speaker (Left and Right speakers) by rotating the VOLUME Control Knob. A
‘click‘ will be heard and the power on indicator (green) will be on.
6) Set each speaker‘s MODE switch to L (for the Left stereo speaker) and R (for the Right
stereo speaker) and set the transmitters STEREO/MONO switch to STEREO or MONO
position.
7) Adjust each speaker's VOLUME Control and Tone Control Knobs to a comfortable
listening level to meet your personal preference.
Be sure to turn off the speakers and transmitter when you are not using them.
TRANSMISSION AUTO ONIOFF
The transmitter has a built-in automatic transmit ONIOFF controller. When the AC adapter is
correctly plugged in and the transmitter receivers the audio signals from the audio source,
the power LED of the transmitter is on and lights green, it means you can enjoy the music
from the transmitter. The transmission doesn't stop until the transmitter doesn’t receive the
audio signals from the audio source for about 1 minute. At that time, the power LED of the
transmitter will be off
CHANNEL SELECT
The popular 900 MHz High Frequenw Technology is being widely applied to Mobile Phones,
Cordless Telephones and many more items to come. If you receive interference from some
of these devices, you might be able to reduce the interference by switching from one channel
to another. There are altogether 3 channels in this system. Simply adjust the transmitting
frequency from the Transmitter by switching to an appropriate channel, then set the each
speaker to the same channel. The built in Phase Locked Loop (PLL) circuit will prevent the
system from drifting. You do not have to fine tune your Speakers constantly in order to be
tuned in for good sound reproduction.
BATTERY OPERATION
SPEAKERS
The speaker may be powered using 8 pieces of D size alkaline batteries. These batteries
allow up to 8 hours of continuos operation without the need for AC power.
Unplug the AC adapter, the batteries can automatically power on the speaker. When the AC
adapter is used, the batteries are automatically disconnected from the speaker and shall not
be used to power the speaker.
When the batteries‘ power begins to decrease, you will see the power LED of the speaker
' blinking. This indicates that you have to replace the batteries. If left unattended, the speaker
will be automatically turned off after a period of time.
TROUBLESHOOTING
If you follow all the instructions in this manual, you should have no problem with your 40-
5029 Wireless Speaker System. However, in case you can not make the system work,
please read the TROUBLESHOOTING section carefully. Do not return to your dealer
immediately! Check and follow these guides- you probably can resolve your problems
without much difficulty.
PROBLEMS SOLUTIONS
No sound Be sure the speakers are turned on.
Replace the speakers‘ batteries.
Be sure the AC adapter is plugged in and has
power.
Be sure all cables are securely connected.
Be sure the audio source is turned on and
tumed to an active channel.
Be sure the source’s volume control is turned up.
Be sure the speakers and transmitter are set to the
same channel.
Adjust the speakers’ volume control.
Distorted audio Be sure the speakers and transmitter are set to the
Lsame channel.
If you connected the transmitter to and audio
source’s headphone jack, reduce the audio
source’s volume.
Change the position of the transmitter.
The speakers are placed beyond the transmitter’s
effective range (Approximately 150 feet). You need
to bring the Speakers closer to the Transmitter.
The transmitter is located too close to the screen of
your TV set or Computer Monitor (The Screens’
magnetic field can cause some interference to the
Transmitter).
Other 900 MHZ transmissions are being picked up
by the Speaker‘s receiver. (Likely form a nearby
900MHz cordless telephone). To avoid such
interference, change to a new Frequency Channel
for the Speakers and the Transmitter.
The batteries on your sound source are too low
and should be replaced.
Check the battery levels of your speakers. The
batteries may be exhausted and need to be
replaced.
THE FCC WANTS YOU TO KNOW
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 or
more 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.
~00nsult your local RadioShack store or an experienced radio/TV technician for help.
~lf you cannot eliminate the interference, the FCC requires that you stop using your intercom system.
Changes or modifications not expressly approved by RadioShack may cause Interference and void
the users authority to operate the equipment.
CARE
Keep the station dry; it it gets wet, wipe it dry immediately. Use and store the station only in normal
temperature environments. Handle the station carefully; do not drop it, Keep the station away from
dust and dirt, and wipe it with a damp cloth occasionally to keep it looking new.
SPECIFICATIONS
Transmitter
Carrier Frequency...911.4~——918.4 MHz
Power Source...12V DC, 250 mA
Modulation Method. . .FM Modulation
Frequency Response...80 Hz---20 kHz (6 dB)
Speaker
Sensitivity ................
SIN Radio (@-50dBm)
Audio Distortion...
Max. Audio output.
Power requirement
a) AC adapter (AC 120/60Hz ~DC 12V 1800mA) supplied
b) DC BXD Size 1.5V Alkaline Batteries (Not supplied)
..<2 uV (with 20 dB SIN)
>=70 dB (A weight)
PIN: AOO129AAA1

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Create Date                     : 2002:10:30 10:15:47+08:00
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Mod Date                        : 2002:10:30 10:16:08+08:00
Creation Date                   : 2002:10:30 10:15:47+08:00
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