XLR refers to a three-pin locking connector that is used in audio applications. In analog applications, particularly in some high-end consumer audio equipment, XLR connectors are used with balanced lines for optimal interference rejection. An XLR connector's pins usually point in the direction of signal flow.
Digital Video: Why Digital Video? The shortest answer to the question "Why digital video?" is "Because analog video is dead." This isn't advertising hyperbole, its a simple fact. It may take a few years for analog cameras to completely expire, but their demise is foreordained.
