NEXUS System

SDI-Audio

Serial Digital Interconnect (SDI) is an internationally agreed standard for transmitting digital video with embedded audio and ancillary data. The shared, synchronised transmission path for video and audio over a single line offers a number of benefits, for example, when transferring via satellite links or routing over SDI video crossbars.

The XHDI 02 slide-in board provides an SDI interface and supports SD, HD and HD-3 G video formats. The board receives, generates and processes synchronous and asynchronous audio signals transported in a digital serial video stream. The following specifications have been implemented: SMPTE 259M (SD), SMPTE 292M (HD), and SMPTE 424M/425M (3 G).
The XHDI 02 embeds and de-embeds metadata streams used mainly during transport and processing of multichannel audio signals.
Use in combination with Stage Tec’s Dolby E^® enabled components allows for de-embedding and decoding Dolby E^® signals from an SDI stream, processing them in the NEXUS, and finally re-embedding them into the SDI stream. This is also supported for SDI signals clocked asynchronously. The XHDI 02 is also capable of compensating for the latency intrinsic to Dolby E^® decoding and encoding using a video delay of 0-15 frames (SD) or 0-8 frames (HD/3 G).

Dolby and the double-D symbol are registered trademarks of Dolby Laboratories.