Introducing the LEX1852-10: The Ultra-Compact, Highly Reliable Gigabit Media Converter

Meet the LEX1852-10 (Dual-Fiber SC Type)—a highly reliable, ultra-compact switch-type media converter designed to seamlessly bridge your copper and fiber networks. Equipped with a 1000BASE-LX port (SMF 15km / MMF 550m, Dual-Fiber SC connector), it effortlessly converts 10/100/1000BASE-T to 1000BASE-LX.

Despite being one of the smallest media converters in the world, the LEX1852-10 is built for uncompromising ruggedness and durability. With hardware-based DIP switches for quick configuration, it caters to a wide array of network architectures—from carrier-grade infrastructures to standalone setups. If you are looking to upgrade your legacy copper infrastructure to high-speed Gigabit fiber, this is the perfect solution.

◆Key Features
・Ultra-Compact Form Factor: One of the world's smallest footprints at just 50mm (W) x 74mm (D) x 20mm (H) (excluding protrusions).

・Flexible Deployment: Compatible with a variety of mounting chassis depending on your environment (LEX1001PEH, LEX1012-15/45, LEX1020).

・High Durability: Engineered with premium ceramic capacitors for long-term operational stability.

・Plug-and-Play RJ45: Features Auto-Negotiation and Auto MDI/MDI-X.

・Visual Diagnostics: Front-panel LED indicators for intuitive status monitoring.

・High-Performance Forwarding: Jumbo Frame support up to 10,240 bytes.

・Protocol Transparency: Fully supports EAP and BPDU pass-through.

・Customizable DIP Switch Controls: Easily toggle the following settings via hardware switches:

・Manual speed, Duplex (Half/Full), and Auto-Negotiation settings.

・Manual selection of Auto MDI/MDI-X or Force MDI/MDI-X.

・LFP (Link Fault Pass-Through) ON/OFF.

・Advanced ECO Mode ON/OFF.

・Flooding Mode ON/OFF (disables MAC learning when active).

◆Industry Applications
Built for versatility, the LEX1852-10 powers critical connections across a wide range of sectors:

・Carriers & ISPs: FTTH rollouts, inter-regional links, service monitoring networks, and Data Center (DC) connectivity.

・Government & Municipalities: Secure connections between city halls, branch offices, schools, and public libraries.

・Education & Research: Campus-wide networks, inter-university links, and R&D facility connections.

・Utilities & Power: Smart grid monitoring, unmanned substation links, and FTTB/FTTH expansion.

・Manufacturing & Logistics: Extending network reach between factory buildings and warehouses.

・Transportation: Highway ETC (Electronic Toll Collection) networks, security camera feeds, and railway signal monitoring.

・Broadcasting (CATV): Interconnection between CATV operator hubs.

◆Deep Dive: Standout Features

・Link Fault Pass-Through (LFP)
Network downtime is costly. With the LFP feature enabled, if a link goes down on one port (e.g., the UTP copper side), the converter automatically forces the other port (the SFP fiber side) to drop its link as well. This immediate synchronization allows network administrators to rapidly isolate and identify the exact point of failure, drastically reducing troubleshooting time (MTTR) and minimizing business disruption.

・Advanced ECO Mode
Aligning with green IT initiatives, the Advanced ECO Mode is a smart power-saving function. When enabled, all LEDs (except the power indicator) are restricted—flashing for only 5 seconds every 3 minutes, regardless of network traffic. This simple adjustment reduces power consumption by approximately 10%, helping lower operational expenditures (OPEX) in large-scale deployments.

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