prEN IEC 60728-101-2:2022
(Main)Performance requirements for signals delivered at the system outlet in operation with all-digital channels load
<p>Performance requirements for signals delivered at the system outlet in operation with all-digital channels load</p>
Anforderungen für Signale an der Teilnehmeranschlussdose im Betrieb mit rein digitaler Kanallast
Exigences de performance relatives aux signaux délivrés à la prise d'abonné en fonctionnement sous une charge de porteuses exclusivement numériques
Zahteve za zmogljivost za signale na izhodu sistema pri delovanju pod obremenitvijo vseh digitalnih kanalov
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN IEC 60728-101-2:2022
01-november-2022
Zahteve za zmogljivost za signale na izhodu sistema pri delovanju pod
obremenitvijo vseh digitalnih kanalov
Performance requirements for signals delivered at the system outlet in operation with
alldigital channels loadExigences de performance relatives aux signaux délivrés à la prise d'abonné en
fonctionnement sous une charge de porteuses exclusivement numériques
Ta slovenski standard je istoveten z: prEN IEC 60728-101-2:2022
ICS:
33.040.20 Prenosni sistem Transmission systems
33.160.01 Avdio, video in avdiovizualni Audio, video and audiovisual
sistemi na splošno systems in general
oSIST prEN IEC 60728-101-2:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN IEC 60728-101-2:2022
100/3804/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60728-101-2 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2022-09-02 2022-11-25
SUPERSEDES DOCUMENTS:
100/3745/CD, 100/3765A/CC
IEC TA 5 : CABLE NETWORKS FOR TELEVISION SIGNALS, SOUND SIGNALS AND INTERACTIVE SERVICES
SECRETARIAT: SECRETARY:Japan Mr Hiroo Tamura
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
Other TC/SCs are requested to indicate their interest, if
any, in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel votingThe attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of
which they are aware and to provide supporting documentation.TITLE:
Performance requirements for signals delivered at the system outlet in operation with all-
digital channels loadPROPOSED STABILITY DATE: 2026
NOTE FROM TC/SC OFFICERS:
Copyright © 2022 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to download this
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
permission in writing from IEC.---------------------- Page: 3 ----------------------
oSIST prEN IEC 60728-101-2:2022
IEC CDV 60728-101-2 IEC:2022(E) – 1 –
1 CONTENTS
2 FOREWORD ........................................................................................................................... 3
3 INTRODUCTION ..................................................................................................................... 5
4 1 Scope ............................................................................................................................... 6
5 2 Normative references ....................................................................................................... 7
6 3 Terms, definitions, symbols and abbreviations .................................................................. 8
7 3.1 Terms and definitions .............................................................................................. 8
8 3.2 Abbreviations ........................................................................................................ 16
9 4 Methods of measurement ............................................................................................... 17
10 5 Summation of the impairments ....................................................................................... 17
11 5.1 Impairments to be summed ................................................................................... 17
12 5.2 Summation laws .................................................................................................... 18
13 5.2.1 General ..................................................................................................... 18
14 5.2.2 Voltage addition ........................................................................................ 18
15 5.2.3 Power addition........................................................................................... 19
16 5.3 Examples .............................................................................................................. 19
17 6 Performance requirements in operation .......................................................................... 19
18 6.1 General ................................................................................................................. 19
19 6.2 Impedance ............................................................................................................ 19
20 6.3 Performance requirements at the terminal input .................................................... 20
21 6.3.1 Definition ................................................................................................... 20
22 6.3.2 Signal level ................................................................................................ 20
23 6.3.3 Other parameters ...................................................................................... 20
24 6.4 Performance requirements at system outlets ......................................................... 20
25 6.4.1 Minimum and maximum signal levels ......................................................... 20
26 6.4.2 Mutual isolation between system outlets .................................................... 20
27 6.4.3 Isolation between individual outlets in one household ................................ 20
28 6.4.4 Isolation between forward and return path ................................................. 20
29 6.4.5 Long-term frequency stability of distributed signals at any system30 outlet ......................................................................................................... 20
31 6.4.6 RF signal level differences at system outlet ............................................... 21
32 6.4.7 Frequency response within a television channel ........................................ 21
33 6.4.8 Random noise at system outlet .................................................................. 21
34 6.4.9 Interference to television channels ............................................................ 23
35 6.5 Additional performance requirements .................................................................... 24
36 6.5.1 DVB (PSK, QAM, OFDM) performance ...................................................... 24
37 6.5.2 DAB performance ...................................................................................... 25
38 Annex A (informative) Examples of summation of impairments............................................. 26
39 Bibliography ........................................................................................................................ 28
41 Figure 1 – CATV/MATV/SMATV cable network – Performance requirements .......................... 7
42 Figure 2 – Examples of location of HNI for various home network types ................................ 12
44 Table 1 – RF signal-to-noise ratios at system outlet in operation .......................................... 22
45 Table 1 (continued) – RF signal-to-noise ratios at system outlet in operation ........................ 23
46 Table 2 – Signal-to-noise ratios at system outlet (sound radio) in operation .......................... 23
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47 Table 3 – Modulation error ratio MER of DVB signals in operation ........................................ 25
48 Table A.1 – Examples of voltage addition ............................................................................. 26
49 Table A.2 – Examples of power addition ............................................................................... 27
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IEC CDV 60728-101-2 IEC:2022(E) – 3 –
52 INTERNATIONAL ELECTROTECHNICAL COMMISSION
53 ____________
55 CABLE NETWORKS FOR TELEVISION SIGNALS,
56 SOUND SIGNALS AND INTERACTIVE SERVICES –
58 Part 101-2: Performance requirements for signals
59 delivered at the system outlet in operation with all-digital channels load
62 FOREWORD
63 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
64 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
65 international co-operation on all questions concerning standardization in the electrical and electronic fields. To
66 this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
67 Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
68 Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
69 in the subject dealt with may participate in this preparatory work. International, governmental and non-
70 governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
71 with the International Organization for Standardization (ISO) in accordance with conditions determined by
72 agreement between the two organizations.73 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
74 consensus of opinion on the relevant subjects since each technical committee has representation from all
75 interested IEC National Committees.76 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
77 Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
78 Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
79 misinterpretation by any end user.80 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
81 transparently to the maximum extent possible in their national and regional publications. Any divergence
82 between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
83 the latter.84 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
85 assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
86 services carried out by independent certification bodies.87 6) All users should ensure that they have the latest edition of this publication.
88 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
89 members of its technical committees and IEC National Committees for any personal injury, property damage or
90 other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
91 expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
92 Publications.93 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
94 indispensable for the correct application of this publication.95 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
96 patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
97 International Standard IEC 60728-101-2 has been prepared by technical area 5: Cable
98 networks for television signals, sound signals and interactive services, of IEC technical
99 committee 100: Audio, video and multimedia systems and equipment.100 This International Standard is to be used in conjunction with IEC 60728-101:2016.
101 The text of this standard is based on the following documents:FDIS Report on voting
100/XX/FDIS 100/XX/RVD
102
103 Full information on the voting for its approval can be found in the report on voting indicated in
104 the above table.---------------------- Page: 6 ----------------------
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105 The language used for the development of this International Standard is English.
106 This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
107 accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available at
108 https://www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
109 described in greater detail at https://www.iec.ch/standardsdev/publications.110 A list of all parts of the IEC 60728 series, under the general title Cable networks for television
111 signals, sound signals and interactive services, can be found on the IEC website.
112 The committee has decided that the contents of this document will remain unchanged until the
113 stability date indicated on the IEC website under webstore.iec.ch in the data related to the
114 specific document. At this date, the document will be115 • reconfirmed,
116 • withdrawn,
117 • replaced by a revised edition, or
118 • amended.
119 A bilingual version of this publication may be issued at a later date.
120
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IEC CDV 60728-101-2 IEC:2022(E) – 5 –
121 INTRODUCTION
122 Standards and deliverables of IEC 60728 series deals with cable networks including
123 equipment and associated methods of measurement for headend reception, processing and
124 distribution of television and sound signals and for processing, interfacing and transmitting all
125 kinds of data signals for interactive services using all applicable transmission media. These
126 signals are typically transmitted in networks by frequency-multiplexing techniques.
127 This includes for instance128 • regional and local broadband cable networks,
129 • extended satellite and terrestrial television distribution systems,
130 • individual satellite and terrestrial television receiving systems,
131 and all kinds of equipment, systems and installations used in such cable networks, distribution
132 and receiving systems.133 The extent of this standardization work is from the antennas and/or special signal source
134 inputs to the headend or other interface points to the network up to the terminal input of the
135 customer premises equipment.136 The standardization work will consider coexistence with users of the RF spectrum in wired
137 and wireless transmission systems.138 The standardization of any user terminals (i.e., tuners, receivers, decoders, multimedia
139 terminals etc.) as well as of any coaxial, balanced and optical cables and accessories thereof
140 is excluded.141 The reception of television signals inside a building requires an outdoor antenna and a
142 distribution network to convey the signal to the TV receivers.143 This part of IEC 60728 deals with the requirements that must be fulfilled at the system outlet
144 or terminal input, when the CATV/MATV/SMATV system is in operation.145 These performance requirements for signals at the system outlet or terminal input in operation
146 are derived from considerations of the characteristics of the received signals at the input of
147 the headend (see Clause 6 of IEC 60728-101) and the summation of the impairments
148 produced by the headend, the CATV/MATV/SMATV network and the home network, when the
149 requirements given in IEC 60728-101 and IEC 60728-101-1 are fulfilled.150 This document gives the guidelines for calculation of the operational characteristics at system
151 outlet, taking into account the performance requirements of the CATV/MATV/SMATV network,
152 of the home networks and of the received signals, given in the International Standards
153 IEC 60728-101 and 60728-101-1 prepared by TA 5: Cable networks for television signals,
154 sound signals and interactive services, of IEC technical committee 100: Audio, video and
155 multimedia systems and equipment.156 This document considers digital signals only and is based on IEC 60728-101 dealing with
157 system performance of forward paths loaded with digital channels only. For performance
158 requirements for analogue signals delivered at the system outlet in operation refer to IEC
159 60728-1-2 ED2.160 Although the upper frequency range of terrestrial broadcast signals depends on the allocation
161 frequency plan of each region (e.g., in Europe it is reduced to 694 MHz, being the 700 MHz
162 and 800 MHz bands assigned to telecommunication services), the upper frequency range into
163 the cable networks can be maintained to 862 MHz in order to maximise the number of
164 channels distributed in the cable networks, assuming that sufficient immunity (screening
165 efficiency) to signals radiated in the 700 MHz and 800 MHz bands is provided.
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167 CABLE NETWORKS FOR TELEVISION SIGNALS,
168 SOUND SIGNALS AND INTERACTIVE SERVICES –
169
170 Part 101-2: Performance requirements for signals
171 delivered at the system outlet in operation with all-digital channels load
172
173
174
175 1 Scope
176 This part of IEC 60728 provides the minimum performance requirements to be fulfilled in
177 operation at the system outlet or terminal input and describes the summation criteria for the
178 impairments present in the received signals and those produced by the CATV/MATV/SMATV
179 cable network, including individual receiving systems.180 NOTE 1 When a change of signal format is made at the headend, the summation of the impairments does not
181 apply (see also Clause 6).182 In a building divided into apartment blocks, the signals received by the antennas are
183 distributed by the MATV/SMATV cable network up to the home network interface (HNI); the
184 television signals are then distributed (inside the home) by home networks (HN) of various
185 types up to the system outlet or terminal input. The cable network can support two way
186 operation, from the system outlet (or terminal input) towards the headend.187 The home network can use coaxial cables, balanced pair cables, fibre optic cables (glass or
188 plastic) and also wireless links inside a room (or a small number of adjacent rooms) to replace
189 wired cords.190 This part of IEC 60728 is limited to downstream TV broadcast signals received from antennas
191 and is applicable to cable networks intended for television signals, sound signals and
192 interactive services operating between about 5 MHz and 3 300 MHz. The frequency range is
193 extended to 6 000 MHz for home distribution techniques that replace wired cords with a
194 wireless two-way communication inside a room (or a small number of adjacent rooms) that
195 uses the 5 GHz to 6 GHz frequency band.196 64H64H64HFigure 1 shows the main sections of a general CATV/MATV/SMATV system, indicating the
197 parts of the IEC 60728-101 series documents where the relevant performance requirements
198 are indicated.199 • The requirements for the signals received at the headend are given in Clause 6 of
200 IEC 60728-101.201 • The requirements for the CATV/MATV/SMATV cable network, assuming an unimpaired
202 input signal at the input of the headend, up to the system outlet are given in
203 IEC 60728-101, Clause 5.204 • The requirements for the CATV/MATV/SMATV cable network up to the home network
205 interface (HNI) are given in IEC 60728-101, Clause 7, assuming an unimpaired input
206 signal at the input of the headend.207 • The specific requirements from HNI to the system outlet or terminal input are given in
208 IEC 60728-101-1, Clause 5, assuming an unimpaired input signal at the HNI.209 • The requirements at the system outlet in operation are given in Clause 6 of this document.
210 The expression “in operation” means that the received signals, with their impairments, are
211 applied to the headend input of the CATV/MATV/SMATV cable network. The requirements at
212 the system outlet “in operation” are derived, therefore, by summing the impairments of the
213 various cascaded parts of the system and of the input signal.---------------------- Page: 9 ----------------------
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214 When a change of signal format from digital to digital (e.g. from QPSK to QAM) (e.g. as in ETSI
215 EN 300473) or from digital to analogue (e.g. from DVB-S/S2 to AM-VSB or DVB-T/T2 to AM-
216 VSB) is made at the headend, the summation of the impairments that produce a relaxation of
217 requirements at system outlet does not apply. Such a case will be the equivalence of
218 unimpaired signals applied at the headend input. Therefore, the requirements at system outlet
219 given in IEC 60728-1 apply.Performance requirements,
see Clause 6 (in operation)
Antenna system
(or other feeding network)
Satellite
Terrestrial
antenna
antenna
HNI
CATV/MATV/SMATV
Distribution Home network Terminal
Headend
network (HN) equipment
System
oulet
Headend
Performance requirements,
input
see Clause 5 of IEC 60728-
Performance requirements, see Clause 7
101-1
of IEC 60728-101 (unimpaired input signals)
Performance (unimpaired input signals)
requirements,
see Clause 6
Performance requirements, see Clause 5
of IEC 60728-101
of IEC 60728-101 (unimpaired input signals)
IEC 1012/09
220
221 Diagram of the main sections of a CATV/MATV/SMATV cable network and the relevant parts
222 of the IEC 60728-101 series where the requirements are indicated.223 Figure 1 – CATV/MATV/SMATV cable network – Performance requirements
224 This document also provides references for the basic methods of measurement of the
225 operational characteristics of the downstream cable network in order to assess its
226 performance.227 All requirements refer to the performance limits to be achieved in operation at any system
228 outlet when terminated in a resistance equal to the nominal load impedance of the system,
229 unless otherwise specified. Where system outlets are not used, the above applies to the
230 terminal input.231 NOTE 2 If the home network is subdivided into a number of parts, using different transmission media (e.g. coaxial
232 cabling, balanced cabling, optical cabling, wireless links) the accumulation of degradations should not exceed the
233 figures given below.234 NOTE 3 Performance requirements of return paths as well as special methods of measurement for the use of the
235 return paths in cable networks are described in IEC 60728-10.236 2 Normative references
237 The following referenced documents are indispensable for the application of this document.
238 For dated references, only the edition cited applies. For undated references, the latest edition
239 of the referenced document (including any amendments) applies.240 IEC 60050-705, International Electrotechnical Vocabulary (IEV) – Chapter 705: Radio wave
241 propagation242 IEC 60050-712, International Electrotechnical Vocabulary (IEV) – Chapter 712: Antennas
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243 IEC 60050-725, International Electrotechnical Vocabulary (IEV) – Chapter 725: Space
244 radiocommunications245 IEC 60728-101:2016, Cable networks for television signals, sound signals and interactive
246 services – Part 1: System performance of forward paths loaded with digital channels only
247 IEC 60728-101-1, Cable networks for television signals, sound signals and interactive
248 services – Part 1-1: RF cabling for two-way home networks with all-digital channels load
249 IEC 60728-3, Cable networks for television signals sound signals and interactive services –
250 Part 3: Active wideband equipment for coaxial cable networks251 IEC 60966-2-4, Radio frequency and coaxial cable assemblies – Part 2-4: Detail
252 specification for cable assemblies for radio and TV receivers – Frequency range 0 MHz to
253 3 000 MHz, IEC 61169-2 connectors254 IEC 60966-2-5, Radio frequency and coaxial cable assemblies – Part 2-5: Detail
255 specification for cable assemblies for radio and TV receivers – Frequency range 0 MHz to
256 1 000 MHz, IEC 61169-2 connectors257 IEC 60966-2-6, Radio frequency and coaxial cable assemblies – Part 2-6: Detail
258 specification for cable assemblies for radio and TV receivers – Frequency range 0 MHz to
259 3 000 MHz, IEC 61169-24 connectors260 ETSI EN 300 421, Digital Video Broadcasting (DVB); Framing structure, channel coding and
261 modulation for 11/12 GHz satellite services262 ETSI EN 300 429, Digital Video Broadcasting (DVB); Framing structure, channel coding and
263 modulation for cable systems264 ETSI EN 300 473, Digital Video Broadcasting (DVB); Satellite Master Antenna Television
265 (SMATV) distribution systems266 ETSI EN 300 744, Digital Video Broadcasting (DVB); Framing structure, channel coding and
267 modulation for digital terrestrial television268 ETSI EN 302 307, Digital Video Broadcasting (DVB); Second generation framing structure,
269 channel coding and modulation systems for Broadcasting, Interactive Services, News
270 Gathering and other broadband satellite applications271 ETSI EN 302 755, Digital Video Broadcasting (DVB) - Frame structure, channel coding and
272 modulation for a second generation digital terrestrial television broadcasting system (DVB-T2)
273 ETSI EN 302 769 (2015), Digital Video Broadcasting (DVB); Frame structure channel coding
274 and modulation for a second generation digital transmission system for cable systems (DVB-
275 C2)276 3 Terms, definitions, symbols and abbreviations
277 3.1 Terms and definitions
278 For the purposes of this document, the following terms and definitions apply.
279 ISO and IEC maintain terminology databases for use in standardization at the following
280 addresses:---------------------- Page: 11 ----------------------
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281 • IEC Electropedia: available at https://www.electropedia.org/
282 • ISO Online browsing platform: available at https://www.iso.org/obp
283 3.1.1
284 active home network
285 home network that uses active equipment (for example, amplifiers) in addition to passive
286 equipment such as splitters, taps, system outlets, cables and connectors up to the coaxial RF
287 interface (input and/or output) of the terminal equipment for distributing and combining RF
288 signals289 [SOURCE: IEC 60728-1:2014, 3.1.2]
290 3.1.2
291 antenna
292 part of a radio transmitting or receiving system which is designed to provide the required
293 coupling between a transmitter or a receiver and the medium in which the radio wave
294 propagates295 Note 1 to entry: In practice, the terminals of the antenna or the points to be considered as the interface between
296 the antenna and the transmitter or receiver are specified.297 Note 2 to entry: If the transmitter or receiver is connected to its antenna by a feeder line, the antenna is
298 considered to be a transducer between the guided radio waves of the feeder line and the radiated waves in space.
299 Note 3 to entry: See also IEC 60728-1:2014, 3.1.3, IEC 60728-1-1:2014, 3.1.2 and IEC 60728-1-2:2014, 3.1.2.
300 [SOURCE: IEC 60050-712:1992, 712-01-01, modified – The deprecated term "aerial" has
301 been deleted, in Note 1 "should be specified" has been replaced by "are specified", Note 2
302 has been clarified and a Note 3 giving additional references has been added.]
303 3.1.3304 attenuation
305 ratio of the input power to the output power of an equipment or system
306 Note 1 to entry: The ratio is expressed in decibels.
307 [SOURCE: IEC 60728-1:2014, 3.1.5]
308 3.1.4
309 balun
310 device for transforming an unbalanced voltage to a balanced voltage or vice-versa
311 Note 1 to entry: The term is derived from "balanced to unbalanced transformer".
312 [SOURCE: IEC 60728-101-1:202x, 3.1.4]313 3.1.5
314 bit error ratio
315 BER
316 ratio between erroneous bits and the total number of transmitted bits
317 [SOURCE: IEC 60728-1:2014, 3.1.9]
318 3.1.6
319 CATV network
320 regional and local broadband cable networks designed to provide sound and television signals
321 as well as signals for interactive services to a regional or local area322 Note 1 to entry: Originally defined as Community Antenna Television network.
323 [SOURCE: IEC 60728-1-1:2014, 3.1.9 and IEC 60728-1-2:2014, 3.1.8]
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324 3.1.7
325 decibel ratio
326 ten times the logarithm to the base 10 of the ratio of two quantities of power P and P , that is
1 210lg in dB
327
328 Note 1 to entry: T
...
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