Theatrixx, Media Converter, models:

TXVV-SDI2AUDIO-TRUE1	User Manual
XVISION TH-HDMI2SDI-T1	User Manual
XVISION TXVV-HDBT2HDMI	User Manual
XVision TH-FIBER2SDI-T1	User Manual
xVision Converter Series	Quick-Start Streaming Manual