Animated Optical Glossary
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Jabber...............Jumper Cable
JabberJoint Photographic Experts Group (JPEG)Jumper Cable
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Jabber

Term used with Ethernet to describe the act of continuously sending data. A jabbering station is one whose circuitry or logic has failed, and which has locked up a network channel with its incessant transmission.


Jitter

The slight movement of a transmission signal in time or phase that can introduce errors and loss of synchronization. More jitter will be encountered with longer cables, cables with higher attenuation and signals at higher data rates. Also, called phase jitter, timing distortion or intersymbol interference.


Joint Photographic Experts Group (JPEG)

A committee formed by the International Organization of Standardization to set standards for digital compression of still images. JPEG also refers to the digital compression standard for still images created by this group.



Jumper Cable

A connectorized cable used to interconnect transmission equipment or to connect test equipment to test ports. Also known as fiber jumper, patchcord or test cord.