https://www.asmag.com/project/resource/index.aspx?aid=16&t=secutech-made-in-taiwan-products-and-solutions
Product Info
HD SDI Digital Video Optical transmitter and receiver

HD SDI Digital Video Optical transmitter and receiver

Shenzhen Huatiancheng Techco., LTD
Region: China
Update: 09/19/2011
Key Specifications
HD-SDI Video Fiber Optic Transmission System could transmit SDI signal (143Mbps-1.485Gbps) over extended distances, the SDI signal could be embedded audio and control data.

HD-SDI Video Fiber Optic Transmission System

Video: 1 channel HD-SDI Video

Audio: 1 channel embedded Audio

Serial Data: 1 channel unidirectional/ bidirectional RS-232/RS-422/RS-485

Fiber type: SMF & MMF

https://www.asmag.com/project/resource/index.aspx?aid=16&t=secutech-made-in-taiwan-products-and-solutions