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Description

Y-dimension of recorded spot

In facsimile systems, the distance between the centers of adjacent recorded spots on adjacent lines measured perpendicular to the recorded line.

Y-dimension of scanning spot

In facsimile systems, the distance between the centers of adjacent scanning spots on adjacent lines measured perpendicular to the scanning line on the object. Note: The numerical value of the Y-dimension of scanning spot depends upon the type of system.

Yagi antenna

A linear end-fire antenna, consisting of three or more half-wave elements (one driven, one reflector, and one or more directors). Note 1: A Yagi antenna offers very high directivity and gain. Note 2: The formal name for a “Yagi antenna” is “Yagi-Uda array.

Yagi antenna image

yellow alarm

An indication provided to a source device indicating a signal failure condition at a sink device. [T1.107-1988] Synonyms remote alarm indication, yellow alarm signal.

yellow alarm signal

Synonym yellow alarm.

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