GrandLink GLK-4500D1 Mini OTDR

GrandLink GLK-4500D1 Mini OTDR is a compact, high-performance optical time domain reflectometer designed for fast and accurate fiber optic testing in FTTx, access networks, and maintenance environments. Built for field technicians and network engineers, this portable OTDR delivers precise fault location, loss measurement, and event analysis with an intuitive interface, long battery life, and rugged construction suitable for demanding outdoor use.

Product Features

High-precision fiber testing

The GLK-4500D1 delivers accurate distance and loss measurements, enabling technicians to quickly identify faults, breaks, bends, and splices in single-mode fiber networks.

Compact and portable design

Engineered as a mini OTDR, it is lightweight and easy to carry, making it ideal for fieldwork, installations, and on-site troubleshooting.

User-friendly interface

Features a clear display and simple navigation controls that allow both experienced engineers and new users to operate efficiently without extensive training.

Fast measurement and analysis

Provides rapid test results with automatic event detection, reducing downtime and improving workflow efficiency during fiber deployment and maintenance.

Long battery life

Equipped with a high-capacity rechargeable battery to support extended field operations without frequent recharging.

Multi-function integration

Combines OTDR, optical power meter, visual fault locator (optional), and light source functions in one device, reducing the need for multiple tools.

Rugged and field-ready construction

Built with durable materials to withstand harsh working conditions, including dust, minor impacts, and varying temperatures.

Product Specifications

• Wavelength: 1310 nm / 1550 nm
• Fiber type: Single-mode fiber
• Dynamic range: Up to 28–32 dB (depending on model configuration)
• Event dead zone: ≤ 10 m
• Attenuation dead zone: ≤ 5 m
• Distance range: Up to 100 km
• Distance accuracy: ±(1 m + 0.005% × distance + sampling resolution)
• Pulse width: Adjustable (e.g., 5 ns to 10 µs)
• Display: High-resolution color LCD
• Interface: USB port for data transfer and software upgrades
• Storage: Internal memory with support for multiple test records
• Battery: Rechargeable lithium battery with up to 8–10 hours operation
• Operating temperature: -10°C to +50°C
• Storage temperature: -20°C to +70°C
• Dimensions: Compact handheld design
• Weight: Lightweight for portability
• Additional functions: Auto OTDR test, event map, trace analysis, report generation