USASI - Abbreviation for United States of American Standards Institute. Superseded ASA and in turn was superseded by ANSI.
USE - Neoprene® jacketed underground service entrance cable. Neoprene® is a trademark of the DuPont de Nemours Co.
UTP - Abbreviation for unshielded twisted pair.
UV - Abbreviation for ultraviolet.
V - Abbreviation for voltage. See voltage.
V BAND - A band of microwave frequencies. See frequency band.
VA - Abbreviation for volt-ampere. A designation of power in terms of volts and amperes.
VEL. - Abbreviation for velocity.
VELCRO® - Set of nylon strips of interlocking barbs on one strip and hooks on another that can be fastened and unfastened repeatedly. Velcro® is a trademark of the Velcro Industries B.V.
VELOCITY OF PROPAGATION - Is the ratio of the speed of an electric signal down a length of cable compared to the speed of light in free space. All insulated cables have this ratio and it is expressed in percentage. It is the reciprocal of the square root of the dielectric constant of the cable insulation. For example, in the case of coaxial cables with polyethylene dielectric, this ratio is 65% to 66%.
VERTICAL RISER CABLE - Steel wire armored power cable for vertical runs in a building.
VERY HIGH FREQUENCY - See frequency band. Abbreviation VHF.
