Viaavi Optical Time Domain Reflectometer Recommendation

For versatile fiber testing, Viavi's T-BERD/MTS and SmartOTDR series, including the TB6000AV2, are highly recommended for both installation verification and troubleshooting across multiple network types. Key Considerations for Selecting a Viavi OTDRWhen choosing a Viavi OTDR, consider the following factors based on your application: 1. Network Type and FiberPremises/LAN/WAN/Data Centers: Multimode (850/1300 nm) or single-mode (1310/1550 nm) fibers; short dead zones are critical for closely spaced events.

FTTH/PON: Single-mode fibers with 1310/1550 nm; dynamic range ≥35 dB for 1/32 splitters, ≥40 dB for 1/64 splitters; automatic multi-pulse acquisition is recommended to detect all events before and after splitters.

Metro/

Long Haul: Single-mode fibers with 1310/1550/1625 nm; dynamic range ≥40–50 dB depending on distance; short dead zones for accurate event characterization. CWDM/DWDM: Wavelength-specific testing (1271–1611 nm for CWDM, C-band for DWDM); high dynamic range and short dead zones are essential. 2.

OTDR Specifications

Dynamic Range: Higher dynamic range allows testing longer fibers or through splitters. For example, TB6000AV2 offers 16–24 dB depending on wavelength and pulse width. Dead Zones: Event dead zone (0.

2–0. 25 m) and attenuation dead zone (0. 4–2.

1 m) are important for detecting closely spaced splices and connectors. Pulse Width: Adjustable pulse width (e.g., 1 ns on TB6000AV2) helps balance resolution and reach. Wavelength Support: Ensure the OTDR covers the wavelengths used in your network (850/1300/1310/1550 nm, optional 1625 nm for PON troubleshooting),.

3.

Modularity and Platform

Viavi OTD

Rs like T-BERD/MTS-2000, -4000 V2, -5800, SmartOTDR, and OneAdvisor-800 provide modular platforms that can evolve with testing needs, supporting handheld operation, automated measurements, and integration with power meters and light sources. 4. Ease of UseOTDR traces require trained technicians for accurate interpretation.

Models with automated acquisition and multi-pulse settings simplify testing, especially for PON networks. Recommended ModelsTB6000AV2: Compact OTDR with high resolution, suitable for short-range multimode and single-mode testing; ideal for premises and LAN/WAN applications. T-BERD/MTS Series: Modular, handheld OTDRs suitable for FTTH/PON, metro, and long-haul networks; supports multiple wavelengths and dynamic ranges.

SmartOTDR: Optimized for automated PON testing with multi-pulse acquisition and simplified trace analysis; excellent for FTTH deployment. OneAdvisor-800: Advanced platform for multi-application testing including OTDR, CWDM/DWDM, and network troubleshooting.

Conclusion

For most applications, Viavi's T-BERD/MTS or SmartOTDR series provide the best combination of flexibility, dynamic range, and ease of use, while the TB6000AV2 is a solid choice for compact, high-resolution testing in premises or LAN/WAN environments. Ensure the selected OTDR matches your network type, fiber, and wavelength requirements, and consider models with automated multi-pulse acquisition for PON networks to simplify testing and improve accuracy.