The EXFO TK-FF Fiber Finder kit is a dual-function solution for identifying and tracing optical fibers in live and dark fiber environments. It pairs the LFD-300B Live Fiber Identifier with the TG-300B Tone Generator to enable non-disruptive fiber location across telecommunications and network installations. Technicians can pinpoint specific fibers, verify signal direction, and confirm fiber identity without service interruption—critical for network upgrades, maintenance, and troubleshooting operations.
Technical Specifications
• Components: LFD-300B Fiber Identifier, TG-300B Tone Generator, soft carrying bag, AC adapter, instrument clamp
• Dimensions: 245 mm × 45 mm × 55 mm per unit
• Weight: 0.35 kg per unit; approximately 2 lb total kit weight
• Operating Temperature: 0 °C to 50 °C
• Storage Temperature: −20 °C to 60 °C
• Power: 4 AA batteries per unit
• Test Cycle Time: Less than 6 seconds
• Insertion Loss (LFD-300B): Maximum 1 dB on single-mode fiber at any wavelength
• Insertion Loss (TG-300B): Typical 0.25 dB when added to live signal
• Signal Tones (TG-300B): 270 Hz, 1 kHz, 2 kHz
• Jacket Compatibility (LFD-300B): 900 µm, 1.6 mm, 3 mm
– Key Features
• Live fiber detection with directional signal confirmation
• Dark fiber location via audible tone generation
• Ambient light offset with optional mitigation cap on LFD-300B
• Power measurement on live fibers
• Single-person operation capability with integrated clamp
• Minimal signal disruption—no network traffic interruption required
– Typical Applications
• Network upgrades and fiber route verification
• Installation and commissioning of optical systems
• Maintenance and preventive testing
• Fault isolation and troubleshooting
– Compatibility & Integration
Works on all wavelengths and standard fiber types. Not compatible with bend-insensitive/bend-resistant fiber (G.657 standard) or certain dark-coated fibers with the LFD-300B at maximum insertion loss specification.
