IEC 61603-1:1997 pdf download – Transmission of audio and/or video and related signals using infra-red radiation -Part 1: General

IEC 61603-1:1997 pdf download – Transmission of audio and/or video and related signals using infra-red radiation -Part 1: General.
This part of IEC 1603 gives methods of measuring and specifying the common technical features of the parts of systems which use diffusely radiated or wide beams of intra-red radiation as carriers of information, mainly representing audio andor video signals but also control data related to audio and video apparatus.
This standard applies to signal transmission by use of freely radiated infra-red, normally used indoors In rooms and for groups of varying sizes. It does not cover security systems or other industrial applications, such as measurement and automation equipment. It also does not cover traf tic systems or systems for the help of handicapped people. Narrow-beam and cable-like intra-red applications are excluded, although the former could intertere with the systems covered.
1.2 NormatIve references
The following normative documents contain provisions which, through reference In this text, constitute provisions of this part of IEC 1603. At the time of publication, the editions indicated were valid. All normative documents are subject to revision, and parties to agreements based on this part of IEC 1603 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. Members of IEC and ISO maintain registers of currently valid International Standards.
IEC 50(845): 1987, International EIecrrotechrical Vocabulary — Lighting
IEC 65: 1985, Safety requirements for mains operated electronic and related apparatus for household and similar general use
IEC 68: Environmental testing
IEC 268-1: 1985, Sound system equipment — Part 1: General
IEC 268-15: 1996, Sound system equipment — Part 1 5: Preferred matching values for the interconnection of sound system components
IEC 417: Graphical symbols for use on equipment
IEC 574-3: 1983, Audiovisual, video and television equipment and systems — Part 3:
Connectors for the Interconnection of equipment In audiovisual systems
IEC 574.4: 1982. AudiovIsual, video and television equipment and systems – Part 4.’ Preferred matching values for the interconnection of equipment in a system
IEC 825-1:1993, Safety of laser products — Part /: Equipment classification, requirements and user’s guide
IEC 1147: 1993, Uses of inira-reri transmission and the prevention or control of interference between systems
ISO 7000:1989. Graphical symbols for use on equipment — Index and synopsis
1.3 Definitions
For the purpose of this part of IEC 1603, the following definitions apply.
13.1 channel identification number In a multichannel system, the number given to a
specific single channel for identification purposes.
1.3.2 detector; IR detector: Front end of an PR receiver, such as photodiode. phototransistor.
1 .3.3 number of channels: The total number of information channels offered by a system, as specified by the manufacturer,
1.3.4 power densIty
1) In general, the quotient of the IR power and a specified unit area.
2) For diffuse IR radiation in a room, the total installed PR power divided by the floor area of the room.
NOTE — Tii. special definition his proved to be he4ptul Pot p4anning purposes.
1.3.5 radiator; PR radiator: Device for converting the electrical input supplied by a separate transmitter into PR.
1.3.6 receiver; IR receiver Device with PR detector and signal processing which reconstructs the original message or transcodes ii for special use, such as remote control.
1.3.7 source; IR source: Any device supplying IR for transmitting signals.
1.3.8 transmitter; IR transmitter Device containing an electronic circuitry which processes a message into a signal suitable for the modulation of an PR source in the same or in a separate unit.
1.3.9 Ulbricht sphere: Device, in the shape of a sphere with its inner surface coated with scattering material, for making source power measurements.
NOTE — The scatlerwig material Qenelales a unilorm dilluse l field ins4e the sphere.
1.4 Abbreviations
1.4.1 IR: Infra-red. inhra -red radiation.
1.4.2 IRED: Infra-red emitting diode.