Viavi 4100 Mod C OTDR Module – 1310/1550/Filtered 1650nm (46/45/43dB) Dynamic Range, APC

The Viavi E4138FC65APC is a high-performance 4100 Series Mod C OTDR Module designed for advanced fiber optic network testing and troubleshooting across access, metro, and FTTx networks. Featuring three wavelengths (1310, 1550, and filtered 1650 nm) with impressive dynamic ranges of 46/45/43 dB, this OTDR module is ideal for detecting events over long distances and through complex network environments.

The inclusion of a filtered 1650nm live fiber testing port enables technicians to perform in-service troubleshooting without disrupting traffic—a critical advantage in modern fiber network maintenance.

Key Features

• Tri-wavelength OTDR: 1310/1550/1650 nm (filtered for live fiber testing)

• Dynamic Range: 46 dB (1310nm), 45 dB (1550nm), 43 dB (1650nm)

• Compatible with Viavi T-BERD/MTS-2000, 4000, and 5800 platforms

• Filtered 1650nm enables safe live fiber monitoring

• High-resolution fault localization across long-haul and access networks

• APC connector interface minimizes reflection for accurate measurements

Applications

• Tier-2 OTDR testing for access and metro networks

• Live fiber troubleshooting with filtered 1650 nm

• Long-range backhaul and fiber link validation

• FTTx/PON fault localization

• Routine fiber certification and maintenance

Specifications

• Wavelengths: 1310 / 1550 / 1650 nm (filtered)

• Dynamic Range (typical): 46/45/43 dB

• Event Dead Zone: As low as ~0.5 m (platform dependent)

• Attenuation Dead Zone: ~2–3 m

• Connector Interface: APC (Angled Physical Contact)

• Compatible Platforms: Viavi T-BERD/MTS-4000, 5800, and others

• Live Fiber Safe: Yes, with filtered 1650nm port

Ordering Info

• SKU: E4138FC65APC

• Module Type: OTDR (Mod C)

• Wavelengths: 1310/1550/Filtered 1650nm

• Dynamic Range: 46/45/43 dB

• Interface: APC