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Jacket


The outer, protective covering of the cable. Also called the cable sheath.

Jacket
 


Jitter


Small and rapid variations in the timing of a waveform due to noise, changes in component characteristics, supply voltages, imperfect synchronizing circuits, etc. See also DDJ, DCD, and RJ.

 


JPEG


Abbreviation for joint photographers expert group. International standard for compressing still photography.

 


Jumper


A short fiber optic cable with connectors on both ends.

Jumper