Hugh Robjohns has been Sound On Sound's Technical Editor since 1997. Prior to that he worked in a variety of (mostly) sound-related roles in BBC Television, ending up as a Sound Operations Lecturer at the BBC's technical training centre.
He continues to provide audio consultancy and bespoke broadcast audio training services all over the world, lectures at professional and public conventions, and occasionally records and masters acoustic and classical music too!
I need to align some analogue gear to work with digital audio embedded in a video broadcast... what dBFS should my digital PPM read at the end of the chain?