First step is to make an accurate inspection of the ferrule, using a video microscope. Each type of connector has a different ferrule diameter. Therefore, the correct. Fiber Optic Testing Testing is used to evaluate the performance of fiber optic components, cable plants and systems. As the components like fiber, connectors, splices, LED or laser sources, detectors and receivers are being developed, testing confirms their performance specifications and helps. This Applications Engineering Note (AEN 135) explains and recommends standard measurement methods for characterizing optical fiber system performance. We specialize in precision fiber optic splicing, OTDR testing, and network troubleshooting for commercial, industrial, and telecommunications clients throughout the. Independent fiber optic testing services for cables (OPGW, ADSS, OPPC) that enables you to choose reliable products and ensure your infrastructure meets or exceeds your expected design life. Fiber optic cable. Perhaps the most important test is insertion loss of an installed fiber optic cable plant performed with a light source and power meter (LSPM) or optical loss test set (OLTS) which is required by all international standards to ensure the cable plant is within the loss budget before acceptance of.