GESD Fiber Visual Fault Locator Instruction Manual

1. Introduction

The GESD Fiber Visual Fault Locator (VFL) is a robust and efficient tool designed for identifying and locating faults in fiber optic cables. It emits a visible red laser light (650nm) that allows users to visually trace fiber paths, detect breaks, poor connections, bends, and other issues in both single-mode and multi-mode fibers. Its durable design and versatile connectivity make it suitable for various telecommunications and CATV engineering maintenance tasks.

Image 1: GESD Fiber Visual Fault Locator and FC/LC Adapter.

2. Package Contents

Verify that all items listed below are included in your package:

• VFL Pen (Fiber Visual Fault Locator) x 1
• FC Male to LC Female Adapter x 1
• Carrying Bag x 1
• Lanyard x 1
• User Guide x 1

3. Product Features

• Long Output Distance: Emits a strong 650nm red light, capable of traveling up to 50 kilometers through optical fibers, enabling efficient fault detection over extended lengths.
• Durable Construction: Features a stainless steel head and an aluminum-alloy body, designed to resist collision and dust. The chassis grounding design helps prevent electrostatic discharge damage.
• Wide Compatibility: Equipped with a 2.5mm universal connector, compatible with ST, SC, FC, MU, and LC fiber optic connectors. An FC Male to LC Female adapter is included for enhanced versatility.
• Practical Design: Compact, lightweight, and easy to carry for field use. Includes features such as constant output power, low battery alarm, and long battery life.
• Fault Detection: Clearly identifies fiber optic faults like breaks, poor connections, excessive bends, and open circuits by illuminating the fault area with red light.

4. Product Structure and Components

Familiarize yourself with the main components of the GESD Fiber Visual Fault Locator:

Image 2: Product Structure Introduction, showing Protective Cap, Switch, Protective Shell, Metal Battery Bin, and Battery Cover.

• Protective Cap: Covers the optical output port when not in use to prevent dust and damage.
• Switch: Controls the operating mode (OFF, Continuous Wave, Pulse).
• Protective Shell: The main body of the VFL, providing durability and grip.
• Metal Battery Bin: Houses the batteries.
• Battery Cover: Secures the batteries in place.

5. Specifications

Image 3: Detailed product specifications including output power, distance, wavelength, and battery type.

Image 4: Diagram illustrating the dimensions of the GESD Fiber Visual Fault Locator.

6. Safety Information

This device emits a visible laser light. Please observe the following safety precautions:

• DO NOT look directly into the laser beam or its reflection. Direct exposure can cause severe eye injury.
• DO NOT point the laser at people or animals.
• Use the VFL only as intended and described in this manual.
• Keep out of reach of children.
• Ensure the protective cap is in place when the VFL is not in use.

7. Setup

7.1 Battery Installation

1. Unscrew the battery cover at the bottom of the VFL (refer to Image 2).
2. Insert two (2) AA batteries into the metal battery bin, ensuring correct polarity (+/-).
3. Screw the battery cover back on securely.

Note: It is recommended to use high-quality alkaline AA batteries to prevent leakage and ensure optimal performance. Remove batteries if the device will not be used for an extended period.

7.2 Connecting Fiber Optic Cables

1. Remove the protective cap from the VFL's optical output port.
2. For ST, SC, or FC connectors, directly insert the fiber connector into the VFL's 2.5mm universal port.
3. For LC connectors, attach the provided FC Male to LC Female adapter to the VFL's port first, then insert the LC fiber connector into the adapter. Ensure a secure connection.

Image 5: GESD VFL demonstrating compatibility with various fiber optic interfaces.

8. Operating Instructions

The GESD VFL offers two operating modes: Continuous Wave (CW) and Pulse (GL).

1. Power On: Slide the switch to the 'ON' position for continuous wave output. The red laser light will be emitted constantly.
2. Pulse Mode: Slide the switch to the 'GL' position for pulsed output. The red laser light will flash, which can be useful for easier identification over long distances or in noisy environments.
3. Fault Detection: Connect the fiber optic cable to the VFL. Observe the fiber along its path. Any breaks, sharp bends, or poor connections will cause the red light to escape, creating a visible glow at the fault location.
4. Power Off: Slide the switch to the 'OFF' position when finished using the VFL. Replace the protective cap.

Image 6: Comparison illustrating the longer output distance of the GESD VFL.

9. Maintenance

• Battery Care: To prevent battery leakage and potential damage to the device, remove the AA batteries if the VFL will not be used for an extended period.
• Connector Cleaning: Keep the fiber optic connector clean. Dust and debris can significantly reduce performance. Use appropriate fiber optic cleaning tools (not included) to clean the VFL's output port and fiber connectors before use.
• Protective Cap: Always replace the protective cap on the VFL's output port when not in use to prevent dust accumulation and physical damage.
• Storage: Store the VFL in its carrying bag in a dry, cool place, away from direct sunlight and extreme temperatures.

10. Troubleshooting

• No Light Output:
  • Check if the batteries are installed correctly with the right polarity.
  • Replace old or depleted batteries with new ones.
  • Ensure the switch is in the 'ON' or 'GL' position.
• Weak Light Output:
  • This often indicates low battery power. Replace the batteries.
  • Clean the VFL's output port and the fiber connector. Dust or debris can obstruct the laser beam.
• Adapter Loose/Not Connecting Properly:
  • Ensure the FC Male to LC Female adapter is fully seated and securely screwed onto the VFL's port.
  • Verify that the LC connector is properly inserted into the adapter.
• Inaccurate Fault Location:
  • Ensure the fiber is clean and free of external light interference.
  • Check for tight bends or stress points along the fiber path that might be mistaken for a fault.

11. Warranty and Support

GESD is committed to providing high-quality products and customer satisfaction. If you encounter any issues or require assistance with your Fiber Visual Fault Locator, please contact our customer support team. We offer service response within 24 hours.

For support, please visit the GESD Store on Amazon or refer to the contact information provided with your purchase.