The VIAVI E4136A-PC 4100 Module A OTDR is a professional optical time domain reflectometer module engineered for fibre installation, qualification, troubleshooting, and maintenance workflows across telecom, datacentre, enterprise, metro, long-haul, and FTTx/PON environments. Designed for use with VIAVI OneAdvisor 800, T-BERD/MTS-2000, T-BERD/MTS-4000 V2, and MTS-5800 platforms, the module provides flexible modular fibre analysis capability within a portable field-ready ecosystem.
The E4136A-PC configuration supports singlemode OTDR testing at 1310 nm, 1550 nm, and 1625 nm wavelengths, allowing technicians to perform fibre construction testing, live network troubleshooting, and preventative maintenance using a single OTDR module. The 1625 nm wavelength enables in-service troubleshooting capability without interfering with active traffic in supported optical network environments.
The 4100 Series Module A architecture is designed for point-to-point, metro, access, and passive optical network testing applications requiring portable OTDR analysis with efficient workflow integration. The module supports Smart Link Mapper analysis, automated OTDR measurements, multi-result display views, and VIAVI Test Process Automation workflows for streamlined field operation and reporting.
The E4136A-PC uses PC optical connector configuration and provides compatibility with interchangeable universal connector adapters for SC, LC, and FC fibre interfaces depending on installed adapter configuration. The module is suitable for fibre acceptance testing, deployment verification, maintenance troubleshooting, and optical network certification workflows.
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