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Home » Products » Test and Inspection » VFI4-L Visual Fault Identifier

VFI4-L Visual Fault Identifier

VFI4-L
VF14 Visual Fault Identifier in hand
VF14 Visual Fault Identifier in hand
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Product Overview

A Visible Fault Identifier (VFI), also referred to as a Visual Fault Locator (VFL), is an essential tool for fiber installation and maintenance technicians.

AFL’s compact VFI4-L injects high-powered red-laser light to provide exceptional brightness and range for locating defects in single-mode and multimode fibers. The light generated by these units will escape from sharp bends and breaks in jacketed or bare fibers, as well as poorly mated connectors enabling technicians to quickly spot faults. The universal connector interface mates with many connector styles without needing an adapter.

Rugged and Compact: The rugged VFI4-L is designed for the rigors of real-life field testing. It has a range of up to 4 km, fits on a keychain, and features extensions that protect the red-laser port. It has both CW and pulsating modes and is powered by a single AA battery for up to 30 hours of operation.

Installation and Activation: VFI4-L is used for quick continuity checks, fiber tracing, splice verification, and Pass/Fail validation for mechanical connectors. VFI4-L is also an excellent complement to any OTDR because it can locate faults inside the OTDR’s dead zone.

Essential Troubleshooting Tool: The VFI4-L highlights sharp bends, breaks, faulty connectors, and other defects that “leak” light. Other applications include end-to-end continuity checks, as well as identifying connectors in patch panels and fibers during splicing operations.

Low Power Option: The VFI4-L offers a low power version with a lower output power of 1.0 mW and a 4 km range.

Table of Contents

Features

  • Universal connector interface for quick connection
  • 2.5 mm universal adapter (included) accepts FC, SC, ST, etc. connectors
  • 1.25 mm universal adapter (not included) accepts LC and MU connectors
  • VFI4-L is available with output power of 1.0 mW with 4 km range

Applications

  • Identify and trace fibres during activation and installation
  • Identify poorly mated connectors
  • Verify AFL’s FASTConnect® field-installable connector installation
  • Find faults inside OTDR dead zones

Specifications

OPTICAL
Emitter Type Laser, Class II FDA 21 CFR

1040.10 and 1040.11

Class 2 IEC 60825-1:2014

Wavelength 650 nm ±15 nm
Output Power 1 mW maximum
Modulation 2 Hz or CW selected
GENERAL
Adapter 2.5 mm Universal, 1.25 mm Universal
Power 1 AA battery, <50 hours (Flash mode)
Operating Temperature -10°C to 50°C, 85 % humidity non condensing
Storage Temperature -30°C to 60°C, 95 % humidity non condensing
Size (H x W x D) 7.9 x 5.1 x 2.2 cm (3.1 x 2.0 x 0.9 in)
Weight 43 g (1.5 oz)

 

a. All specifications valid at 25°C unless otherwise specified.

Ordering Information

PART NUMBER DESCRIPTION
VFI4-02-0900PR VFI4-L visual fault identifier with 2.5 mm adapter

Adapters

PART NUMBER DESCRIPTION
2900-50-0013MR 2.5 mm Universal for VFI port
2900-50-0012MR 1.25 mm Universal for VFI port

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