Introduction to Distribution Amplifier

In signal management, a distribution amplifier is a device that allows you to connect a single video source to multiple displays. For example, if you have one computer and you want to display it on six monitors at the same time, you would need a distribution amplifier to buffer the video source from the load demanded by six displays. 

In most cases, the outputs on distribution amplifiers are designed to handle a range of cable lengths. Others are designed to compensate for , or “equalize” specific cable run lengths. For example, the Ditto-Amp™ (DA1907SX) is a 1-Input 2-Output distribution amplifier with one output designed specifically to feed a nearby local monitor and the other designed specifically to feed a distant display, such as a large screen monitor or projector. 

Others offer adjustments for gain and peaking, allowing specific control over the outputs for different lengths of cable. The DA1905GL provides a 16-position dial to compensate for cable attenuation.

Generally, distribution amplifiers do not provide signal-processing capabilities. If an RGBHV format signal is provided on the input, only RGBHV is available on the output. There are a few exceptions to this rule, including the DA1905GL, which offer sync combining and separating functions (i.e. RGBHV to RGBS, RGBS to RGBHV).

Distribution amplifiers typically provide the same connector type on both their inputs and outputs. For instance, a VGA-QXGA distribution amplifier offers all 15-pin HD female connectors.

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