IEC 61834-9 pdf download Recording – Helical-scan digital video cassette recording system using 6,35 mm magnetic tape for consumer use (525-60, 625-50, 1 1 25-60, 1 250-50 systems) – Part 9: DVB format 1 General 1.1Scope This part of lEC 61834 specifies the content, format and recording method for the data blocksforming the helical records on the tape containing audio，...