sales@foscoconnect.com
(510) 319-9878
Silicon Valley, CA, USA
Overview
The AFL Fiber Ring is a specialized OTDR launch cable designed to enable accurate testing of fiber optic links. By acting as a launch and receive cable, it allows OTDR devices to measure both the near-end and far-end insertion loss and reflectance of a fiber link with precision.
This unit features 150 meters (492 feet) of OM2 50µm multimode fiber, pre-configured with ST connectors. The fiber is housed in a rugged, lightweight, and compact ring case that provides protection during transport and organization in the field. It is an essential tool for technicians performing fiber network certification and troubleshooting in premises environments.
Key Features
-
Standard OM2 Fiber
Features 50µm multimode fiber construction suitable for premises network testing applications. -
Launch & Receive Functionality
Allows for precise measurement of both near-end and far-end connection loss and reflectance. -
150 Meter Length
Provides an optimal length for standard OTDR testing requirements in local area networks. -
ST-ST Connectorization
Equipped with industry-standard ST connectors to ensure broad compatibility with existing test equipment. -
Rugged Case Design
Encased in a durable, lightweight housing that protects the fiber from damage during field use. -
Portable Form Factor
Compact design fits easily into standard OTDR carry cases or test kits for efficient transport.
Applications
- Premises fiber network testing
- OTDR link characterization
- End-to-end insertion loss measurement
- Reflectance monitoring
Technical Specifications
| Specification | Value |
|---|---|
| Manufacturer | AFL |
| Model | FR-OM2-150USTUST |
| Fiber Type | Multimode OM2 |
| Core Size | 50µm |
| Cable Length | 150 m (492 ft) |
| Connector A | ST |
| Connector B | ST |
Frequently Asked Questions
What is the purpose of an OTDR Fiber Ring?
It serves as a launch and receive test cable, allowing the OTDR to measure the loss and reflectance of the first and last connections in a fiber link.
Can I use this for single-mode fiber testing?
No, this product uses 50µm OM2 multimode fiber and is intended for multimode network applications.
Is the fiber permanently coiled inside the case?
Yes, the fiber is safely housed within the compact, ruggedized ring case to prevent tangling and physical damage during use.
Are the connectors standard ST?
Yes, the unit is factory-terminated with standard ST connectors for consistent performance.
Is this compatible with my specific OTDR?
The Fiber Ring is a passive cable accessory and is compatible with any OTDR that supports the corresponding ST interface for multimode testing.

