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

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.

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.“

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.

Synonym yellow alarm.