Around cable

Bidirectional and unidirectional testing Checking the optical line at both ends with two reflectometers Bidirectional testing using one OTDR

Price-to-performance ratio. What accessories and equipment are necessary? The main criteria for choosing an optical reflectometer.

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.