WTD RTXM192-404 SFP Transceiver

The WTD RTXM192-404 is a hot-pluggable SFP (Small Form-factor Pluggable) optical transceiver module designed for multirate high-speed applications up to 2.67 Gbit/s. It supports line rates including 2.488 Gbit/s (OC-48/STM-16) and 2.67 Gbit/s (with FEC), making it suitable for SDH/SONET, Fibre Channel, and other telecom/datacom interfaces.This module operates at a nominal wavelength of 1310 nm using a Fabry-Perot (FP) laser transmitter and a PIN photodiode receiver. It is optimized for single-mode fiber (SMF 9/125 µm) with a typical transmission distance of up to 2 km (Short Reach / SR-1 class). The optical link budget provides reliable performance with low bit error rates (better than 10⁻¹²) over the specified short-reach distance. Transmitter average output power and receiver sensitivity comply with short-reach SONET/SDH specifications.
The RTXM192-404 complies with the SFP MSA and relevant ITU-T G.957 / Telcordia standards for STM-16 / OC-48 short-reach interfaces. It supports framed SDH STM-16 and SONET OC-48 signals with section, line, and path overhead processing when installed in a compatible host platform. The module includes digital diagnostic monitoring (DDM/DOM) compliant with SFF-8472, enabling real-time reporting of transmitted and received optical power, laser bias current, temperature, and supply voltage via the I²C interface.
Optical connectivity is realized through a duplex LC connector. Key operational features include Loss of Signal (LOS) detection and assertion, automatic laser shutdown (ALS) for Class 1 eye safety compliance, and hot-swap support. The module uses the standard 20-pin SFP electrical interface with a single +3.3 V power supply and low power consumption (typically below 1.5 W), making it suitable for high-density port configurations in routers, switches, and optical transport equipment.
Environmental specifications include a commercial operating temperature range of -10°C to +70°C (or wider depending on variant), high humidity tolerance, and built-in ESD protection. This SFP transceiver is primarily used for short-reach intra-office or inter-facility connections in SDH/SONET add-drop multiplexers, terminal equipment, or as a tributary interface in multiservice platforms.
The module integrates seamlessly with network management systems for remote provisioning, performance monitoring (including BIP error checking and signal quality thresholds), and alarm reporting. Installation requires standard fiber optic cleaning procedures, correct Tx/Rx fiber polarity, and adherence to minimum bend radius guidelines for duplex LC patch cords. The WTD RTXM192-404 offers a reliable, cost-effective solution for 2.5 Gbit/s optical transport over single-mode fiber up to 2 km.