The JDSU E8117MR is an optical time domain reflectometer engineered for field-based testing, analysis, and troubleshooting of fiber optic networks. This instrument delivers precise measurements essential for installation, maintenance, and verification of optical infrastructure. The E8117MR characterizes fiber optic cables, identifies faults, and validates network integrity across single-mode and multimode fiber types.
Technical Specifications
Optical Performance
• Operating wavelengths: 1310 nm and 1550 nm
• Dynamic range: Configuration-dependent across wavelength and pulse width settings
• Event dead zone: Measured in meters; configuration-dependent
• Attenuation dead zone: Measured in tens of meters; configuration-dependent
• Pulse widths: Range available for optimization across fiber lengths and event resolution
• Sampling resolution: Configurable for detailed fiber characterization
Optical Module
• Connector types: FC/APC, SC/APC
• Fiber compatibility: Single-mode fiber (SMF) and multimode fiber (MMF)
Data Management
• Onboard memory capacity for test result storage
Physical Design
• Configuration-dependent dimensions optimized for portable field operations
• Variable weight based on configuration and optional features
– Key Features
• Distance measurement with high accuracy for fiber length determination
• Loss quantification: total link loss and loss per kilometer/mile
• Event detection and characterization: splices, connectors, bends, and breaks
• Reflectance measurement from connectors and reflective events
• End-of-fiber detection for physical cable termination location
• Multiple measurement modes: standard OTDR, real-time OTDR
• Optional Visual Fault Locator (VFL) and Optical Power Meter (OPM) capabilities
– Typical Applications
The E8117MR supports field installation verification, maintenance diagnostics, network troubleshooting, and infrastructure validation for fiber optic systems.
– Compatibility & Integration
Designed for both SMF and MMF fiber types with support for standard APC connector interfaces. Measurement capabilities extend to characterization of installed components including splices, connectors, and termination points.


















