IEC 60728-9 pdf download – Cabled distribution systems for television and sound signals – Part 9: Interfaces of cabled distribution systems for digitally modulated signals

IEC 60728-9 pdf download – Cabled distribution systems for television and sound signals – Part 9: Interfaces of cabled distribution systems for digitally modulated signals
1Scope
This part of lEC 60728 describes physical interfaces for the interconnection of signal
processing devices for professional CATV/SMATV headend equipment or for similar systems,such as in up-link stations. This standard, in particular, specifies the transfer of MPEG-2 datasignals in the standardized transport layer format between devices of different signal
processing functions.
RF interfaces and interfaces to telecom networks are not covered by this standard.
ln addition references are made to all other parts of the lEC 60728 series and, in particular,for RF, video and audio interfaces, to lEC 60728-5.
For connections to telecom networks, special Data Communication Equipment (DCE) isnecessary to adapt the serial or parallel interfaces specified in this document to the bitratesand transmission formats of the public Plesiochronic Digital Hierarchy (PDH) networks.Otheremerging technologies such as Connectionless Broadband Data Services (CBDS),
Synchronous Digital Hierarchy (SDH),Asynchronous Transfer Mode (ATM) , etc. can be usedfor transmitting MPEG-2 Transport Streams (TS) between remote locations.ATM is
particularly suitable for providing bandwidth on demand and it allows for high data rates.
2Normative references
The following normative documents contain provisions which, through reference in this text,constitute provisions of this part of lEC 60728.For dated references,subsequent
amendments to, or revisions of, any of these publications do not apply. However, parties toagreements based on this part of lEC 60728 are encouraged to investigate the possibility ofapplying the most recent editions of the normative documents indicated below.For undatedreferences, the latest edition of the normative document referred to applies. Members of lECand lSO maintain registers of currently valid International Standards.
IEC 60169-8:1978,Radio-frequency connectors – Part 8:RF coaxial connectors with innerdiameter of outer conductor 6,5 mm (0,256 in) with bayonet lock – Characteristic impedance50 ohms (type BNC)
IEC 60728(all parts), Cabled distribution systems for television and sound signals
IEC 60728-5,—Cabled distribution systems for television and sound signals – Part 5:Head-endequipment 1)
IEC 60728-6,— Cabled distribution systems for television and sound signals – Part 6: Opticalequipment 1)
lEC 60793-2:1998,Optical fibres – Part 2 : Product specifications
ISO/IEC 13818-1:1996, Information technology – Generic coding of moving pictures andassociated audio information – Part 1: Systems
ISO/IEC 13818-9:1996, Information technology – Generic coding of moving pictures and
associated audio information -Part 9: Extension for real time interface for systems decoders
ISO/IEC 14165-111, Information technology -Fibre Channel – Part 1: Physical and signallinginterface (FC-PH)1)
ISO 2110:1989, Information technology – Data communication – 25-pole DTE/DCE interfaceconnector and contact number assignments
ITU-R Recommendation BT.656-4:1994, Interfaces for digital component video signals in525-line and 625-line television systems operating at the 4:2:2 level of RecommendationITU-R BT.601 (Part A)
ITU-T Recommendation G.654:1997, Characteristics of a cut-off shifted single-mode opticalfibre cable (Rev 1)
ITU-T Recommendation G.703:1998,Physical/electrical characteristics of hierarchical digitalinterfaces (Rev 1)
ETS 300421:1994, Digital broadcasting for television, sound and data services – Framingstructure, channel coding and modulation for 11/12 GHz satellite services
ETS 300429:1994, Digital broadcasting for television, sound and data services – Framingstructure, channel coding and modulation for cable systems
Terms, definitions and abbreviations
3.1Terms and definitions
For the purposes of this part of lEC 60728, the following definitions apply.
3.1.1
head-end
equipment connected between receiving antennas or other signal sources and the remainderof the cable distribution system to process the signals to be distributed
NOTE The head-end may, for example, comprise antenna amplifiers, frequency converters, combiners, selectorsand generators.
3.1.2
Satellite Master Antenna Television system (SMATV)
system designed to provide sound and television signals to the households of a building orgroup of buildings
NOTE Two system configurations are defined in ETS 300 473 as follows:
. SMATV system A, based on transparent transmodulation of QPSK satellite signals into QAM signals to bedistributed to the user;
. SMATV system B, based on direct distribution of QPSK signals to the user, with two options:
SMATV-IF distribution in the satellite lF band (above 950 MHz);
– SMATV-S distribution in the VHF/UHF band, for example in the extended S-band (230-470 MHz).