Parts Express Sound Solutions V1 - page 14

Home Audio/Video
IR repeater systems are used most
commonly with audio/video systems that
distribute video and sound throughout
multiple rooms or locations in a home
or business. They can enable full control
over each component in the system from
every distributed location, assuming each
component in the system works with an
infrared (IR) remote.
IR repeater systems are so-named
because they simply reproduce the IR
code generated by an IR remote. The
basic system consists of:
• The connecting block that accommodates
the power supply and connections
• One or more photo diode units (often
referred to as the “repeater” or IR target)
• One or more “emitter” or IR flasher LEDs
Three conductors are required in the
hook up wire running from the connecting
block: two for DC power and one to carry
the signal. The same type of wire used
for telephone lines or alarm systems is
commonly used in repeater systems, and
is generally run in-wall back to the IR
connecting block.
The emitter LEDs “flash” the code for the
audio/video components to be controlled,
as seen by the IR target. A target must be
installed and wired in every location where
control over the A/V system is desired.
Targets are usually designed to mount
into a standard electrical junction box in a
location that offers reasonable exposure
to the remote control’s IR commands.
When the IR remote is pointed at the
target and any button is pressed, the
photo diode “sees” the IR emitted by
the diode in the remote and creates an
electrical pulse equivalent to the IR code.
This code is transmitted back
to the connecting block, which
also provides power for the
targets and flashers, and then
on to the A/V components
requiring control commands.
Emitters include a pressure-sensitive
adhesive that attaches the LED
directly over the IR window of each
home theater receiver, media player,
satellite box, etc. When the connecting
block receives the pulsed code from
any target, it causes all of the emitter
diodes to flash the code. Only the
A/V component that “recognizes” the
code will respond. Universal remotes
are often used at each target location
along with that monitor or TV’s remote.
Modern universal remotes will operate
most functions on home audio/video
We’ve all said it: “Excuse the
mess!” Put an end to your Audio/
Video clutter excuses by installing
a clean-looking Infrared Repeater
(IR) system. These repeater
systems allow you to move all
of your IR controlled equipment
behind closed doors and out of
sight—creating a clean and tidy
excuse-free viewing area.
No More
Easy to set up and use! There is
no programing required, it’s simply
a “plug and play” item.
Visit to see our full
line of infrared repeater products.
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