ZigBee—ZigBee is a mesh network specification for low-power wireless local area networks (WLANs) that cover a large area. ZigBee was designed to provide high data throughput in applications where the duty cycle is low and low power consumption is an important consideration. (Many devices that use ZigBee are powered by battery.)
Because ZigBee is often used in industrial automation and physical plant operation, it is often associated with machine-to-machine (M2M) communication and the Internet of Things (IoT). ZigBee is based on the Institute of Electrical and Electronics Engineers Standards Association's 802.15 specification. It operates on the IEEE 802.15.4 physical radio specification and in unlicensed radio frequency bands, including 2.4 GHz, 900 MHz and 868 MHz. The specifications are maintained and updated by the ZigBee Alliance.
Z—A symbol for impedance.
Zero Reference—InfoComm experts consider that this term ambiguous.
Zipcord—A cable comprising two jacketed wires or optical fibers that are conjoined together and can be separated.
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
Zoom—A term used with cameras and video displays related to the ability to change the view anywhere between near and far. Definitions for near and far vary from one device to another.
Zoom Lens—A lens with a variable focal length.
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