EN 61603-8-1:2004

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
   7.5 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
Figures
Tables

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.