Around cable

Intermittent defect: wait or fix? Why is it specifically a reflectometer? Pupin coils are now obstacles to digital services.

How cable branches are formed? What's wrong if a branch is? Methodology for locating the branch connection point

Signs of water presence in the cable Methods for locating cable water ingress points What if there's a fault in the waterlogged section of the cable?

Consider the primary functions of reflectometers, such as automatic detection, searching for crossed pairs, and identifying 'floating' defects.

Critical options for reflectometers: Why is this important, and how do you use it?

The noise filtering function - how to use it, when it helps and when it interferes with measurements. An important parameter is the velocity of propagation (VoP) - how it affects the measurement accuracy and how it can be determined experimentally if its value is unknown.

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