Around cable

How to compare OTDRs from different manufacturers? What is more critical: resolution capability or sensitivity? How to determine the actual range of a device?

What determines the accuracy and range of defect detection? What is better: short/long or single/multi-pulses? Case: one reflectometer, but different types of cables.

The reflectometer measures the reflection of a signal. This method for cable damage detection complements all the others we've previously discussed and, in some cases, gives more accurate results, especially when locating wire entanglements or breaks and looking for non-persistent faults. Furthermore, it allows one to clearly identify several individual problems when they interfere with each other, as well as determine the range of each one of them.

What defects can the device detect? How does localization work? Lifehacks

How to work with real cables? Important rules for cable branches

Applications, details, and features.

When servicing metal cable lines, measuring bridges are most commonly used. They are accurate in a wide range of measured values, with compensation of extraneous influences, and inexpensive.

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.