Guntermann & Drunck, Extender, models:

CATVision-USB 2.0	Installation Manual
DL-Compact	Installation And Configuration Manual
DL-DVI-Vision-CAT series	Installation And Operating Manual
DL-DVI-Vision-Fiber series	Installation And Operating Manual
DP-Vision-CAT-AR	Installation And Operation Manual
DP-Vision-IP	Installation And Operation Manual
DVI-Extender-F	Installation Manual
DVI-Vision-CAT series	Installation And Operating Manual
DVI-Vision-Fiber-AR	Installation And Operation Manual
DVI-Vision-IP	Installation And Operating Manual
FIBREVision	Installation And Operation Manual