Technicians use various tools to install, maintain, and troubleshoot fiber cabling: detection and verification testers, certification testers, inspection cameras, cleaning supplies, certification testers, and advanced optical time domain reflectometer (OTDR) instruments for. Technicians use various tools to install, maintain, and troubleshoot fiber cabling: detection and verification testers, certification testers, inspection cameras, cleaning supplies, certification testers, and advanced optical time domain reflectometer (OTDR) instruments for. Fiber testing is the process of verifying the performance of optical fiber cabling. This process includes a range of tests and measurements such as insertion loss, optical return loss, and fiber length. It encompasses all of the standards, processes, and tools used to test the components of both. For termination, our fiber optic pigtail kits come in 6- and 12-strand options with LC, LC APC, SC, and ST connectors in multimode and singlemode. To protect and organize fiber terminations, we carry fiber optic splice trays and. Fiber testers are instruments and equipment used to test fiber optic transmission links.