Understanding Velocity Factor
This video provides a brief overview of velocity factor and the two most common methods used to measure the velocity factor of coaxial cables.
Understanding VNAs - Distance to Fault Measurements: • Understanding VNAs - Distance to Fault Mea...
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Timeline:
00:00 Introduction
00:14 Suggested viewing
00:34 About signal propagation in coaxial cables
01:04 About velocity factor
02:08 Methods for determining velocity factor
02:30 Reading value from the cable / datasheet
03:31 Measuring round-trip time with an oscilloscope
04:21 Calculating velocity factor from round-trip time
05:07 Perform distance to fault measurement with a VNA
05:46 Calculating velocity factor from DTF results
06:41 Summary