Around cable

What is the difference between an ideal symmetrical (balanced) cable and an actual cable? What is asymmetry (imbalance) in a symmetrical (balanced) cable? Asymmetry (unbalanced) and its parameters.

We will study how the pairs in one multi-pair cable and different cables close together affect each other. We will learn the basic characteristics of this influence - the fundamental parameters NEXT and FEXT.

‍Carrier signal feed relative to the ground. How to choose the right grounding point for the transmitter? Tracing pipelines and cable channels made of conductive and non-conductive materials. Identification of pairs in multipair cables.

How is the generator connected? How to choose the right type of receiver probe? How to provide a probing current in the line being traced? What affects the range of the locator?

How does one determine the current direction and strength of the probing signal? Which techniques allow the most accurate determination of the cable's depth? How does one consider the influence that induced signals have on neighboring cables?

What makes up a cable locator receiver? Which sensors are used in receivers? What is the purpose of the different types of sensors and various combinations of sensors used? How does one correctly orient the receiver to the cable being traced?

How does a generator's signal frequency affect the range of the cable location signal? What cable identification frequency is more efficiently? Why can cable identification at low frequency be more reliable? And when is passive location used?

This post contains a brief introduction to cable location principles. What does a typical locator consist of? Active/passive location methods. Cable connection methods.

Active and passive modes of cable routing. Three ways of active tracing of power and telecommunication cables.