Most OTDRs offer compensation features that allow users to “remove” these cables from the results, ensuring that only the data from the actual fiber link under test is recorded. This ensures clarity and accuracy in reporting, making it easier to evaluate the fiber's. - Symptoms: Ghost signals, signal distortion, or data errors caused by reflections and backscatter within the fibre optic cable. - Causes: Improperly terminated connectors, discontinuities in the fibre optic cable, or mismatched refractive indices. Many fiber internet problems come from dirty connectors or loose plugs, not major faults. Connector quality itself may also be at fault, particularly if end-face geometry doesn't meet the IEC PAS 61755-3 standards. Fiber optic networks are celebrated for their speed and reliability, but even the best systems can encounter problems.