sales@foscoconnect.com
(510) 319-9878
Silicon Valley, CA, USA
Overview
The EXFO LFD-202E is a specialized live fiber detector designed for identifying active traffic and signal direction without disconnecting or disrupting existing network services. By measuring core power on live singlemode fibers, it prevents accidental downtime during maintenance, rerouting, or troubleshooting tasks.
Engineered for versatility, this detector identifies both continuous and modulated traffic signals at 270 Hz, 1 kHz, and 2 kHz. Its rugged construction and interchangeable adapter heads allow it to interface with a wide range of fiber types, including 250\u00b5m, 900\u00b5m, 3mm jacketed cables, and ribbon fibers, making it an essential tool for data center and field technician kits.
Key Features
-
Non-Intrusive Detection
Detects signal presence and direction without disrupting traffic or over-stressing the fiber core. -
Wide Spectral Response
Operates effectively across an 800 nm to 1700 nm spectral range for broad compatibility. -
Flexible Fiber Compatibility
Includes three interchangeable adapter heads to support 250\u00b5m, 900\u00b5m, 3mm, and ribbon fibers. -
Modulation Detection
Identifies modulated signals at 270 Hz, 1 kHz, and 2 kHz frequencies for precise testing. -
Core Power Measurement
Provides an integrated power reading display to confirm signal intensity. -
High Power Range
Features a power detection range of 23 dBm to -50 dBm with an over-range indicator.
Applications
- Fiber optic maintenance and troubleshooting
- Network rerouting and upgrades
- Traffic identification before fiber disconnection
- Central office and data center fiber management
Package Contents
- LFD-202E Main Unit
- Interchangeable Fiber Adapter Heads (250\u00b5m, 900\u00b5m, 3mm, and Ribbon)
- Soft Carrying Pouch
Technical Specifications
| Specification | Value |
|---|---|
| Manufacturer | EXFO |
| Model | LFD-202E |
| Power Range | 23 dBm to -50 dBm |
| Spectral Response | 800 nm to 1700 nm |
| Modulation Frequencies | 270 Hz, 1 kHz, 2 kHz |
| Supported Fiber Types | 250\u00b5m, 900\u00b5m, 3mm, Ribbon |
Frequently Asked Questions
Can this unit detect signal direction?
Yes, the LFD-202E is designed to analyze signal presence and determine directionality on singlemode fibers.
Does it work on ribbon fiber?
Yes, the unit comes with an interchangeable adapter head specifically for ribbon fiber.
Will it cause downtime during testing?
No, the unit is designed for non-intrusive testing and will not disrupt active traffic.
What is the spectral range?
The device operates in the 800 nm to 1700 nm range.
What frequencies can it detect?
It can detect modulated signals at 270 Hz, 1 kHz, and 2 kHz.

