High-resolution OTDR designed for metro network testing and splitter characterization in PON FTTx applications. The FTBx-735C is optimized for testing FTTH/PON networks and longer metro links, with up to 42 dB dynamic range enabling testing up to 150 km. It offers industry-leading resolution for PON tests, a short PON dead zone for detecting issues near splitters, iOLM-ready one-touch multiple acquisitions, compatibility with EXFO Connect for cloud-based test-data management, and an in-line SM live port for power measurement and in-service troubleshooting.