What is the typical result of using nominal velocity of propagation (NVP) in cabling tests?

The typical result of using nominal velocity of propagation (NVP) in cabling tests is length measurement. NVP is a factor used in telecommunications to determine how fast a signal travels through a specific type of cable, expressed as a percentage of the speed of light. By knowing the NVP of the cable being tested, it is possible to calculate the actual length of the cable using time-domain reflectometry (TDR) or other measurement techniques.

When signals are sent down a cable, some of them reflect back due to impedance mismatches, and by measuring the time it takes for the reflections to return, technicians can determine the length of the cable. Accurate length measurement is crucial for ensuring network performance and diagnosing potential issues within cabling systems. Thus, the application of NVP directly correlates with calculating the length of the wire based on the signal's propagation characteristics.