sales@foscoconnect.com
(510) 319-9878
Silicon Valley, CA, USA
Overview
The Jonard Tools VFL-150 is a pen-style visual fault locator kit engineered for essential fiber optic maintenance tasks, including fiber tracing, routing, continuity testing, and identifying breaks or high-loss connections. Utilizing a 650nm Class IIIA laser diode, this tool effectively illuminates faults in both single-mode and multi-mode fiber, including those within OTDR dead zones.
Designed for portability and durability in the field, the unit features a rugged pen-style form factor. It offers versatile operation with three distinct modes: continuous wave, pulsing, and slow-pulsing, providing flexibility for various diagnostic environments. The kit is compatible with 2.5mm ferrules out-of-the-box, with an included adapter for 1.25mm LC connectors.
Key Features
-
Universal Connector Compatibility
Supports 2.5mm ferruled connectors (FC, SC, ST) and includes an adapter for 1.25mm LC connectors, providing broad interface flexibility. -
650nm Laser Diode
Utilizes a visible red laser to pinpoint fiber breaks, leaks, and stress points in both single-mode and multi-mode cabling. -
Extended Operating Range
Capable of identifying faults in fiber optic cables up to 5 kilometers (3.1 miles) in length. -
Versatile Operating Modes
Features three distinct modes—continuous wave, pulsing, and slow pulsing—to assist in specific fault identification tasks. -
OTDR Dead Zone Performance
Functions effectively within OTDR dead zones, allowing for precise location of faults near the connector or termination point. -
Long Battery Life
Provides up to 60 hours of continuous operation from two AAA batteries, minimizing downtime for field technicians. -
Portable Pen-Style Design
Compact and lightweight construction enables easy transport and single-handed operation in tight enclosures or manholes.
Applications
- Fiber tracing and routing
- Continuity testing
- Locating fiber breakpoints
- Identifying poor connections or high-loss stress points
- Field diagnostics within OTDR dead zones
Package Contents
- VFL-25 Visual Fault Locator
- VFL-25125 FC to LC Adapter
- 2x AAA Batteries
Technical Specifications
| Specification | Value |
|---|---|
| Manufacturer | Jonard Tools |
| Model | VFL-150 |
| Fiber Connector | FC, SC, ST, LC (via included adapter) |
| Light Source | Class IIIA Laser Diode |
| Operating Wavelength | 650 nm |
| Distance | Up to 5 km (3.10 miles) |
| Battery | 2 x AAA |
| Battery Life | 60 hours |
| Operating Temperature | -20°C to 60°C (-4°F to 140°F) |
| Storage Temperature | -40°C to 85°C (-40°F to 185°F) |
Frequently Asked Questions
Is the VFL-150 compatible with all fiber types?
It is designed for use on both single-mode and multi-mode fiber. However, it is not recommended for use on dark-colored or armored cables.
What connectors can this VFL accommodate?
The tool has a universal interface for 2.5mm ferruled connectors (FC, SC, and ST) and includes an adapter (VFL-25125) specifically for 1.25mm LC connectors.
What is the maximum distance for fault detection?
The laser is capable of identifying faults in fiber spans up to 5 kilometers (3.10 miles).
What operating modes are available?
The unit provides three modes: continuous wave (constant light), flashing (pulsed), and a slower pulse mode for easier tracing.
Does this unit work in high or low temperature environments?
Yes, it is rated for operation between -4°F and 140°F (-20°C to 60°C).



