The nominal velocity of propagation of a cable is the speed the electrons flow down the cable as a percentage of the speed of light. Most NVP are between 60% and 70%. The NVP of a cable is required to enable portable testers to accurately measure the length of an installed link or channel.
Nominal Velocity of Propagation
Net Present Value, details ...Found on http://www.cryer.co.uk/glossary/n/index.htm
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