Distribution amplifier

Distribution amplifier

In electronics, a distribution amplifier or simply distribution amp, is a device that accepts a single input signal and provides this same signal to multiple isolated outputs.

These devices are important because they allow a signal to be distributed to multiple destinations without ground loops or signal degradation. They are used for a number of common engineering tasks, including multiple amplification, cable television, splitting monitor and front of house mixes, and "tapping" a signal prior to sending it through effects units to preserve a "dry" signal for later experimentation.


Video distribution amplifier

A Video Distribution Amplifier (also known as a distribution amp or VDA) is a type of electronic equipment that takes a video signal as an input, amplifies it, and outputs the amplified video signal to two or more outputs. It is primarily used to supply a single video signal to multiple pieces of video equipment.


Video signals can suffer deterioration over relatively short cable distances. To compensate for that loss, a Video Distribution Amplifier (VDA) is used.

A VDA adjusts the amplitude of a video signal to compensate for loss of signal in a video distribution system. Extending the distance of the signal of the video signal is the main purpose of the VDA.

There are VDAs built for all video formats, NTSC, ATSC, QAM16, QAM32, QAM64, Composite Video and Component Video.

Their construction and capabilities can be simple; accept input signal, amplify, then output. Others can be more sophisticated that allow remote control from a control station, allow adjustment of the gain, equalization, and provide status of the input and output signals through Ethernet networks.

See also


External links

Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать курсовую

Look at other dictionaries:

  • distribution amplifier — F/A/V an active device used to split one input into multiple outputs, while keeping each output isolated, and the signal level constant …   Audio and video glossary

  • Distribution amplifier (DA) — A&V A device used to replicate an input signal, typically providing 6 outputs, each of which is identical to the input. May also include delay and/or cable equalization capabilities …   Audio and video glossary

  • Distribution Amplifier — WikiV A device that provides several isolated outputs from one looping or bridging input, and has a sufficiently high input impedance and input to output isolation to prevent loading of the input source …   Audio and video glossary

  • pulse distribution amplifier — skirstomasis impulsų stiprintuvas statusas T sritis automatika atitikmenys: angl. pulse distribution amplifier vok. Impulsverteilerverstärker, m rus. усилитель распределитель импульсов, m pranc. amplificateur distributeur d impulsions, m …   Automatikos terminų žodynas

  • distribution amp — TV (distribution amplifier) Divides single video or audio signals, while boosting theirstrength, for delivery to multiple audio/video acceptors. Allows simultaneous recording on multiple VCR’s from the same source, especially useful for tape… …   Audio and video glossary

  • Audio distribution amplifier (audio DA) — A&V A device used to replicate an audio signal, typically providing 6 outputs, each of which is identical to the input signal …   Audio and video glossary

  • Pulse distribution amplifier (DA) — A&V A device used to replicate an input timing signal, typically providing 6 outputs, each of which is identical to the input signal. May also perform cable equalization or pulse regeneration …   Audio and video glossary

  • Video Distribution Amplifier — WikiV A device used to divide single video signals, while boosting their strength for delivery to multiple video devices …   Audio and video glossary

  • Headphone amplifier — A headphone amplifier is a kind of audio amplifier designed particularly to drive headphones instead of loudspeakers. Most commonly they are found embedded in electronic devices such as integrated amplifiers, portable music players and… …   Wikipedia

  • Optical amplifier — An optical amplifier is a device that amplifies an optical signal directly, without the need to first convert it to an electrical signal. An optical amplifier may be thought of as a laser without an optical cavity, or one in which feedback from… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”