Advantest Q8460A Optical Time Domain Reflectometer

The Advantest Q8460A is an Optical Time Domain Reflectometer (OTDR) engineered for precise measurement and fault location in optical fiber installations. This portable instrument characterizes fiber performance, locates breaks and connection losses, and quantifies transmission loss, splice loss, and optical reflection loss with high accuracy. Its compact, lightweight design supports field deployment with integrated thermal printing and onboard waveform storage.

– Technical Specifications

Measurement Parameters
• Optical transmission loss
• Splice loss
• Optical reflection loss
• Fault location in optical fiber cables
• Installation and maintenance verification

Environmental Operating Conditions
• Temperature: 0°C to +40°C
• Humidity: ≤85% (non-condensing)

Optical Wavelength Support
• 0.85 ±0.02 µm
• 1.30 ±0.02 µm (50/125 µm multimode fiber)
• 1.31 ±0.02 µm (10/125 µm single-mode fiber)
• 1.31 µm and 1.55 µm (single-mode fiber via Q84621 unit)

– Key Features

• Automatic measurement functions for streamlined operation
• Integrated thermal printer for on-site documentation
• Internal waveform memory: 32 screens
• Modular plug-in unit architecture accommodates multiple fiber types and wavelengths
• GPIB interface for remote control and automation
• Compact form factor optimized for portable field use

– Compatibility & Integration

The Q8460A accepts plug-in units for wavelength and fiber-type selection:
• Q84601: 10/125 µm SMF at 1.31 ±0.02 µm
• Q84605: 0.85 ±0.02 µm operation
• Q84606: 50/125 µm MMF at 1.30 ±0.02 µm
• Q84621: Single-mode fiber at 1.31 µm and 1.55 µm

GPIB connectivity enables integration into automated test systems and remote measurement workflows. The instrument outputs an invisible laser beam from its optical connector; direct beam exposure presents a hazard and must be avoided.