Detailed Specifications
HPE J4860C X121 1G SFP LC LH Transceiver
Overview
The HPE J4860C is a high-performance, long-haul optical transceiver designed to extend Gigabit Ethernet connectivity over vast distances. As a small form-factor pluggable (SFP) module, it provides a reliable and cost-effective solution for service providers, large enterprises, and campus networks needing to bridge geographically separated locations. Its primary purpose is to convert an electrical Gigabit signal into an optical one, enabling data transmission far beyond the limitations of standard copper or short-range optical links. This module is engineered specifically for environments requiring stable, high-speed connections between buildings, across a city, or in sprawling industrial facilities, solving the critical challenge of long-distance network segmentation and backhaul. At its core, this transceiver utilizes a high-quality 1550nm Distributed Feedback (DFB) laser to transmit data over single-mode fiber (SMF). This specific wavelength is crucial for long-haul applications as it experiences minimal signal attenuation, allowing the module to achieve a maximum link distance of up to 70 kilometers. The use of single-mode fiber, with its smaller core diameter, prevents modal dispersion over long runs, ensuring signal integrity and consistent 1 Gbps throughput. Its support for Digital Optical Monitoring (DOM) provides real-time diagnostic data on parameters like optical output power and laser bias current, enabling proactive network management and faster troubleshooting. Engineered for seamless integration, the module fits into any standard SFP port on a compatible HPE switch or router. Its hot-swappable capability allows network administrators to install or replace the transceiver without powering down the host device, which is essential for maintaining uptime in mission-critical networks. Physically, it occupies a minimal footprint within a high-density switch or chassis. Logically, it operates as a transparent physical layer device, simplifying network configuration. Management of the transceiver is handled through the host device's command-line interface (CLI) or graphical user interface, where DOM information can be monitored to ensure link health and performance.
