Use world famous-known Raman PUMP laser. Lower noise, high gain bandwidth, flexible gain and stable temperature etc. Use distributed Raman amplifiers, it can reduce the span loss 5.5dB Humanized display of using time, temperature, voltage, optical power and failure warning. Built-in sound control circuit and a microcomputer automatically embedded blue front panel LCD display, accurate real-time monitoring laser output power and a variety of working conditions, ensure a stable output power. Excellent ability of multistage lightning protection, automatic temperature control and automatic power switching, ensure long-time stable and continuous working in an adverse environment. Beautiful 19-inch standard rack case, the structure of scientific and reasonable process, excellent overall performance indicators is an essential pre-amplifier for all CATV engine room. Intelligent: RG-45 Ethernet interface is optional, for implementing a monitor system under .