DESCRIPTION
The Optical Fiber Visual Fault Locator (Red Light Pen) utilizes a 650nm semiconductor laser, offering a reliable and stable red light output for fiber fault detection in both single-mode and multimode fibers. This compact and lightweight tool is an essential instrument for field technicians and network engineers, allowing quick and efficient identification of fiber breakpoints, poor connections, and bends.
With an ergonomic design, flip-cover protection, and multiple power supply options, this red light pen is designed for durability and convenience in harsh working environments. The integrated LED light further enhances usability in dark conditions, making it an ideal tool for fiber optic maintenance and troubleshooting.
Product Specifications
| Parameter | Specification |
| Output Wavelength | 650nm |
| Interface Type | 2.5mm Universal Adapter (SC/FC/ST) |
| Operating Temperature | -20 ~ +60°C (Non-Condensing) |
| Storage Temperature | -40 ~ +85°C |
| Battery Type | 2 × AA Batteries or Rechargeable Lithium Battery (Optional) |
| Working Time | >24h (AA Batteries), >12h (Lithium Battery) |
| Dimensions (mm) | 125 × 36 × 17 |
| Weight (g) | 39~48 |
Selection Notes
Typically selected when the job needs a compact 650nm VFL with flip-cover port protection and simple continuous/flashing operation, especially where LED illumination helps in dark workspaces.
May not be appropriate for teams operating under strict laser-use controls or sites where high-temperature conditions are common and laser lifespan sensitivity becomes a concern.
Feature Details
- 650nm Laser Emission– Generates stable and high-visibility red light for quick fault detection.
- One-Button Operation– Long press 650 button to activate the red light, press again for flashing mode.
- LED Illumination Mode– Long press LED button for built-in flashlight, perfect for dark workspaces.
- Smart Power Management– Simultaneous 650 & LED button press enables timed shutdown
- Charging Status Indicator– Red light during charging, green light when fully charged.
- Flip Cover Protection– Keeps the optical port clean and dust-free when not in use.
Application Details
- Fiber Link Testing– Pinpoints fiber breaks, bends, and bad splices instantly.
- FTTH Installation & Verification– Ensures proper fiber link continuity for end-user connections.
- Telecom & Data Center Maintenance– Simplifies troubleshooting for network engineers.
- Optical Component Manufacturing & Research– Provides essential optical fault location in labs.
Maintenance & Precautions
- Laser Safety Warning– Avoid direct eye exposure to the laser beam.
- Temperature Sensitivity– High temperatures can shorten laser lifespan.
- Fiber Interface Cleaning– Use specialized fiber cleaning swabs after extended use.
- Battery Care– Remove batteries when not in use to prevent leakage.
- Dust Protection– Always close the flip cover after use to avoid contamination.
FAQ
Q1: What fibers can the B3 VFL test?
Single-mode and multimode fibers.
Q2: What is the output wavelength?
650 nm visible red light.
Q3: How is it powered?
Uses 2 × AA batteries, or an optional rechargeable lithium battery.
Q4: Is it compatible with SC/FC/ST?
Yes, the 2.5mm port supports all three.
Q5: What is the detection range?
Up to 10 km depending on fiber condition.
Q6: Does it include a pulse mode?
Yes, both continuous and flashing modes.
Q7: Is it safe for field use?
Yes, durable aluminum alloy casing.
