The VIAVI Quad OTDR module is designed for technicians handling both single‑mode and multimode fibers across premises, enterprise, access, metro, and wireless fronthaul/backhaul networks. It offers fast acquisition, sharp resolution, up to 26 dB multimode and 37 dB single‑mode dynamic range for efficient installation and maintenance. An integrated light source accessible from both OTDR ports allows quick fiber identification and supports full certification testing without switching connections. Its strong optical performance ensures accurate characterization of diverse fiber links in daily field operations.

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