IEC 61603-8-1:2003

FOREWORD
1 Scope
2 Normative references
3 Terms, definitions and abbreviations
4 System description
  4.1 General
  4.2 Area of application
  4.3 Band allocation
5 General characteristics
  5.1 Environment conditions for operation
  5.2 Partition of functions between elements of the systems
6 Specific requirements
  6.1 Block diagram
  6.2 Input and output
  6.3 Carrier
  6.4 Sub-carrier
  6.5 Channel allocation
  6.6 Block structure
  6.7 Source stream
  6.8 Transmission stream
  6.9 Modulation
7 Characteristics and measurements
  7.1 Test conditions
  7.2 Location
  7.3 Transmitting distance and directivity
  7.4 Spurious level
  7.5 Accuracy of transmission-check frequency
8 Marking and contents of specifications
  8.1 Marking
  8.2 Contents of specifications
Annex A (normative) Application of the transmission systems for
                    digital audio and related signals using
                    infrared radiation in the consumer audio
                    mode
Annex B (normative) Application of the transmission systems for
                    digital audio and related signals using
                    infrared radiation in the professional
                    audio mode

IEC 61603-8-1:2003 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. It replaces 6.8.3 of IEC 61603-2. This bilingual version, published in 2011-04, corresponds to the English version.