Historical
IEC 61603-8-1 Ed. 1.0 en:2003
Transmission of audio and/or video and related signals using infrared radiation - Part 8-1: Digital audio and related signals
Specifies the characteristics and measuring methods for digital audio signal transmission systems using infrared radiation with sub-carrier of the frequency ranges 3 MHz to 6 MHz. It describes systems with different economic uses of the available bandwidth in order to obtain minimum interference and maximum compatibility.
International Electrotechnical Commission [iec]

