The JDS Uniphase 4126LM is a dual-wavelength OTDR module engineered for comprehensive optical network testing and troubleshooting across FTTx, enterprise, and metro architectures. This laser diode module integrates OTDR measurement capability with a continuous wave light source and power meter functionality, enabling installation, turn-up, and maintenance operations on point-to-point and passive optical networks (PONs). The module delivers 32 dB dynamic range at 1310 nm and 30 dB at 1550 nm, with event and attenuation dead zones of 1 m and 4 m respectively. It accommodates configurable pulse widths from 3 ns to 10 µs and captures up to 256,000 acquisition points. Traffic detection triggers automatically upon connection to live fiber. Interchangeable FC, SC, DIN, LC, and ST connectors enable flexible field deployment across standard and APC-terminated installations.
## Technical Specifications
• **Wavelengths (Single-Mode):** 1310 nm ±20 nm, 1550 nm ±20 nm
• **OTDR Dynamic Range:** 32 dB at 1310 nm; 30 dB at 1550 nm
• **Event Dead Zone:** 1 m
• **Attenuation Dead Zone:** 4 m
• **Pulse Width Range:** 3 ns to 10 µs
• **Maximum Acquisition Points:** 256,000
• **Power Meter Wavelengths:** 1310 nm, 1490 nm, 1550 nm, 1625 nm, 1650 nm
• **Light Source:** Continuous Wave (CW)
• **Operating Temperature:** 0 to 50 °C
• **Storage Temperature:** -40 to 70 °C
• **Humidity:** Maximum 95% RH non-condensing (0 to 45 °C)
• **Laser Safety Class (21CFR):** Class 1
• **Dimensions:** 128 × 134 × 40 mm
• **Weight:** 0.35 kg
## Key Features
• Dynamic range up to 43 dB supports testing through 1×128 optical splitters
• Single connector port for 1310/1550 nm operation; separate in-service wavelengths at 1625/1650 nm
• Interchangeable optical connectors (FC, SC, DIN, LC, ST) for multi-environment deployment
• Single, dual, and tri-wavelength configurations available
• Instant traffic detection on live fiber connections
## Typical Applications
• Fiber installation and turn-up across PON and point-to-point architectures
• FTTx network qualification and troubleshooting
• Enterprise and metro network diagnostics
• Triple-play service verification (IP video, VoIP, IP Data)
## Compatibility & Integration
Module integrates with JDSU T-BERD/MTS-2000, T-BERD/MTS-4000, and T-BERD/MTS-5800 platforms. Supports SLM, FTTA-SLM, and FTTH-SLM intelligent optical application software.
