DIN EN 61603-1:1997-09 Transmission of audio and/or video and related signals using infra-red radiation - Part 1: General (IEC 61603-1:1997); German version EN 61603-1:1997
1997DIN EN 61603-1:1997-09 Transmission of audio and/or video and related signals using infra-red radiation - Part 1: General (IEC 61603-1:1997); German version EN 61603-1:1997
1997DIN EN 61603-1:1997 Transmission of audio and/or video and related signals using infra-red radiation - Part 1: General (IEC 61603-1:1997); German version EN 61603-1:1997