3G SDI SFP Dual Tx Optical Transceiver is high stability video transmission Optical Transceiver produced by F-tone through independent research,,1310nm/1550nm/CWDM ;Mainly used in SD-SDI,HD-SDI,3G-SDIHD video transmission;widely used in telecommunications networks, aerospace industry, Aviation, electricity, railways, medical, transportation, communications, and other major areas.