In electronics, a distribution amplifier, or simply distribution amp or DA, 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 video signal is the main purpose of the VDA.
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.
- Info about some very common distribution amplifier types.
- Guide to HDMI Distribution Amp, switches and matrix
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