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HD Baluns

What is a Balun?

A balun is a small transformer which converts an audio or video signal from unbalanced to balanced and vice-versa. By doing so, baluns make the necessary impedance adjustment for A/V signal transmission between different types of wiring. An example is to use the Cables for Less 052-122 model to send HDTV signals on component video cables up to 500’ away using a single CAT5e wire!

Why would I use a Balun?

Baluns extend transmission distances. Baluns allow you to extend audio/video signals which are limited to short lengths when utilizing standard cables.

For example using baluns from Cables for Less allows you to send:

• Analog audio as far as 500 feet

• Digital audio as far as 500 feet

• Composite video as far as 500 feet

• Component video at up to 1080i/p HDTV resolutions as far as 500 feet

• All of this using reliable passive (no power supply) Baluns!

Baluns can use existing wiring.

Many buildings and homes already have CAT5e wiring installed! If this is the case for you, the hard work is already done. Just connect a Balun at each end of the cable run with whichever signal wire you need, such as audio or video, to connect the baluns to source and destination equipment.

Baluns lower installation cost. In many installations, the cost of your Cables for Less Baluns in addition to the required CAT5e or CAT6 cable is far less than the cost of standard cables, especially for longer distances.

Increase efficiency and simplify installations.

Traditionally, a single cable could not transmit both audio and video. With Baluns from Cables for Less, both audio and video signals of many different types can be sent on one inexpensive length of CAT5e or CAT6.

Baluns eliminate background hum and rolling interference.

Because Cables for Less Baluns are built using isolation transformers or chokes and utilize twisted pair cabling, these Baluns eliminate the ground loops that cause background audio hum and rolling bar video interference.

How are Baluns used?

It's easy, Cables for Less Baluns are packed in pairs. Simply choose the model that is right for you and place a Balun at each end of your cable run. Cables for Less Baluns will yield best performance when terminated to the T-568A wiring standard. Enclosed versions use a simple RJ45 connector. In-wall versions use 110 punch-down terminals or RJ45 connectors. Make sure that the cable you use is terminated as straight through.

When should I not use a Balun?

Baluns from Cables for Less are not the perfect choice for every application, just most of them! Some factors can degrade Balun performance. It is critical that you check your situation and note any potential issues.

• CAT5e cables carrying an audio/video signal should not be split or connected through an Ethernet hub or switcher.

• CAT5e cables carrying an audio/video signal may be connected through a passive patch bay as long as point-to-point connections are used.

• Do not use a CAT5e cable that is also being used for data, such as computer Ethernet traffic, for connecting Baluns.

• CAT5e cables carrying an audio/video signal should be kept at least 12” away from fluorescent lights.

• CAT5e cables carrying an audio/video signal should not be run parallel for more than 36” with high voltage lines (110 volts AC or greater). If you must cross high voltage lines with the CAT5e, you should do so at a 90 degree angle.

• Balun performance will almost always be compromised with excessive connections and signal conversions. Every time you make a new connection, there will be some loss of signal strength.

• Balun performance may be reduced in areas with excessive RF interference, such as a location near large AC motors.