The EXFO FTB-7423B OTDR module delivers high-performance optical fiber characterization across 1310 nm and 1550 nm wavelengths. This single-mode field-interchangeable module locates faults with 8 cm resolution, supports distances to 260 km, and integrates with EXFO’s portable test platforms for installation, maintenance, and troubleshooting of optical networks.
## Technical Specifications
• **Wavelengths:** 1310 nm ± 20 nm / 1550 nm ± 20 nm
• **Dynamic Range:** 41.5 dB at 1310 nm (20 µs pulse); 39.5 dB at 1550 nm (20 µs pulse)
• **Event Dead Zone:** 3 m (typical, both wavelengths)
• **Attenuation Dead Zone:** 10 m at 1310 nm / 15 m at 1550 nm (typical)
• **Maximum Distance Range:** 260 km
• **Maximum Pulse Width:** 20 µs
• **Sampling Points:** Up to 128,000
• **Sampling Resolution:** 8 cm
• **Linearity:** ± 0.03 dB/dB
• **Fiber Type:** Single-mode (9/125 µm)
• **Connector Interface:** UPC Universal (SC adapter included)
• **Power Level:** High Power
## Key Features
• Visual Fault Locator (VFL) option with 2.5 mm universal adapter included
• Ultra-fine 8 cm resolution enables precise event and fault location
• Extended 260 km range supports long-haul and metro/access network testing
• 128,000 sampling points deliver enhanced trace resolution for complex link analysis
• High power configuration optimizes performance across both wavelengths
## Typical Applications
• Single-mode fiber link characterization
• Fault location in optical networks
• Long-haul network testing and certification
• Metro and access network maintenance
• Installation and acceptance testing of optical paths
## Compatibility & Integration
The FTB-7423B module operates as a field-interchangeable component within EXFO’s test platforms:
• FTB-400 Universal Test System
• FTB-200 Compact Platform
• FTB-100B Mini-OTDR
