SDI digital video Multipliers. Devices from an SDI signal multiply the same signal at different output ports. Serial Digital Interface (SDI) is a digital video format, used for the transmission of uncompressed video signal (RGB video) without encryption (optionally including audio). Is also used for transmitting data packets. The specifications of this format is specifiedn in the ITU-R BT-656 for transmitting video signals in digital components. Data transmission using 270 Mbits/s. In this section you will find all kinds of electronics on the SDI format and its derivatives: HD-SDI, SD-SDI and 3G-SDI.