This miniature and high quality 3G/HD/SD-SDI fiber optical transmission system is pathological test compliance, with built in EQ and re-clocking features. It works with either single-mode 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, and SDI signal presence. It provides critical system diagnostic information at a glance without a need for additional test equipment. 3G/HD/SD-SDI fiber optical transmission system uses its own 5 Vdc power supply.