VIAVI OTDRs let technicians characterize optical cables by measuring length, loss, and events such as splices, connectors, and fiber bends that impact performance. The Brillouin OTDR capability in the OneAdvisor 1000 DTSS and FTH‑DTSS extends this by turning the fiber into a distributed sensor for detecting strain and temperature along the link. When abnormal splice or slope values occur, the system automatically highlights and locates the fault, simplifying troubleshooting. Dual‑wavelength OTDR testing, such as at 1550 and 1625 nm, further enhances fault identification through comparative analysis.

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