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Glossary/Dictionary

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Term Description
Valley Any void between the insulated conductors of a cable or between a cable and its core. See also INTERSTICE.
VHF Abbreviation for Very High Frequency. 30 to 300 MHz
Video Pair Cable A transmission cable containing low-loss pairs with an impedance of 125 ohms. Used for TV pick ups, closed circuit TV, telephone carrier circuits, etc.
Volt A unit of electrical pressure. One volt is the amount of pressure that will cause one ampere of current in one ohm of resistance
Voltage Electrical potential or electromotive force expressed in volts
Voltage rating The highest voltage that may be continuously applied to a wire in conformance with standards or specifications
Voltage Standing Wave Ration (VSWR) The ratio of the maximum effective voltage to the minimum effective voltage measured along the length of a mis-matched radio frequency transmission line
Volume Resistivity(Specific Insulation Resistance) The electrical resistance between opposite faces of a 1 cm. cube of insulation material, commonly expressed in ohms-cm
Vulcanization An irreversible process during which a rubber or polymeric compound through a change in its chemical structure (for example, crosslinking) becomes thermoset
VW-1 A flammability rating established by Underwriters Laboratories for wires and cables that pass a specifically designed vertical flame test, formerly designated FR-1