SVHS – A high band video recording process for VHS that increases the picture quality and resolution capability. See
Terminal – A device typically having a keyboard and display that is capable of sending text to and receiving text from another device, a network, etc.
Termination – A load, or impedance at the end of a cable or signal line used to match the impedance of the equipment that generated the signal. The impedance absorbs signal energy to prevent signal reflections from going back toward the source. In the video industry, termination impedance is typically 75 ohms.
Vertical Interval – The synchronizing information which is presented between fields, and then signals the picture monitor to return to the top of the screen to start another vertical scan.
Videoconferencing — Conducting a conference between two or more locations using video cameras, microphones and video monitors. The participants can be seen, as well as heard. Referred to as a “virtual conference room”.
Virtual conference room — See videoconferencing.
Virtual map — Used with Extron’s virtual matrix switchers (Matrix 3200/6400), a virtual map is made up of tables stored in memory that relate physical connectors (as on the back panel) to logical connections (as seen by the user). In printed form, this can show physical input/output connector numbers as they relate to virtual input/output numbers.
Virtual memory — The process of increasing the apparent size of a computer’s
Virtual switching — A means of making real, physical input or output ports appear to have different numbers. For example, Extron’s Matrix 3200/6400 switchers can be programmed to switch a set (group) of connectors as one. Also see virtual map.
Wideband – A relative term indicating a high bandwidth.
Y – In video, “Y” is an abbreviation for Luminance.
Z – A symbol for impedance.
