TRANSMISSION OF AUDIO AND/OR VIDEO AND RELATED SIGNALS USING INFRA-RED RADIATION - PART 3: TRANSMISSION SYSTEMS FOR AUDIO SIGNALS FOR CONFERENCE AND SIMILAR SYSTEMS
International Electrotechnical Committee
1. General
1.1 Scope
1.2 Normative references
1.3 Definitions
2. Explanation of terms and general information
3. System considerations
3.1 Application area
3.2 Environment
3.3 System planning and installation
3.4 Partition of functions between elements of
the system
4. General conditions for measurements
5. Characteristics to be specified and their methods
of measurement
5.1 Characteristics of the IR source
5.2 Characteristics of the receiver
6. Interface (matching) values, performance requirements
and recommendations
6.1 Interface values for transmitter output signals
6.2 Interface values for radiator input signals
6.3 Polarity
6.4 Spurious emissions and signals
6.5 Sensitivity to random incidence
6.6 Rated signal-to-noise ratio
6.7 Channel allocation and modulation characteristics
6.8 Interface values for audio signals
6.9 Overall audio frequency performance requirements
7. Marking and contents of specifications
7.1 Marking
7.2 Contents of specifications
Tables
1 Channel code, identification number and subcarrier
frequency
2 Marking and contents of specifications
Figures
1 Schematic representation of a conference sound system
2 Signal chain and related IEC standards
3 Allocation of channels and recommended carriers L
Gives methods for measuring and specifying those characteristics of audio infra-red (IR) transmission systems for conference and similar systems not covered by part 1. Allows systems that make different economic use of the bandwidths available to be described in order that conclusions with regard to compatibility and interference can be drawn.
| Document Type | Standard |
| Status | Current |
| Publisher | International Electrotechnical Committee |
| Committee | TC 100 |
