XLR jack and plug 3-pin connector that usually carries a balanced audio signal. Can also carry a 2-channel digital audio signal.

YCbCr The technical term for digital component video. The letter “Y” represents the luminance (brightness) portion of the component-video signal, and “Cb” and “Cr” are the color-difference signals.

YPbPr The technical term for analog component video. The letter “Y” represents the luminance (brightness) portion of the component-video signal, and “Pb” and “Pr” are the color-difference signals.

zone plate A special video test pattern that’s useful for assessing a video display’s comb filter, as well as the 3:2 pulldown performance of progressive-scan DVD players and image scalers within video displays.