1.Adopt high performance DFB laser with international famous band, narrow Spectrum, good linear and high output power 2.Adopts RF power digital automatic process technology designed by ourselves at RF driving part. It can auto-adjust RF driving power according to the input RF signal level and channel number(15 84) to make the C/CSO,C/CTB and C/N in the best condition, which ensure performance of the whole equipment and make the output level of optical receiver keep the same. 3.Advanced multi-frequency point pre-distortion technology with GaAs devices optimize C/CTB and C/CSO value, which are the most important index in CATV system, meanwhile maximize the C/N. 4.There is Ethernet interface and RS-322 network management interface which match to IEEE802.3 10Base-T Standard 5.built-in micro-computer automatic monitor circuit