This miniature and high quality XS-3G HD/SDI fiber optical transmission system is pathological test compliance, with built in EQ and reclocking features. It works with either singlemode or multimode fiber cable. It supports SMPTE 424M/297M (1080p -- 2.97Gbps); SMPTE 292M/297M (HDTV -- 1.485Gbps); SMPTE 259M/297M (SDTV -- 270/360Mbps). These tiny transmitter and receiver modules can be deployed almost anywhere. The modules include LED indicators to display Power On, HD/SDI signal presence and Received Optical Power levels. It provides critical system diagnostic information at a glance without a need for additional test equipment. XS-3G HD/SDI fiber optical transmission system uses its own power supply or any DC voltage from 5 to 16 volt. By using XLR 4 PIN with latch locking mechanism, it can avoid unwanted power interruption. This connection also includes provisions for SNMP monitoring.