IEC 60728-1-1:2010

IEC 60728-1-1
®
Edition 1.0 2010-01
INTERNATIONAL
STANDARD

colour
inside

Cable networks for television signals, sound signals and interactive services –
Part 1-1: RF cabling for two way home networks



IEC 60728-1-1:2010(E)

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IEC 60728-1-1
®
Edition 1.0 2010-01
INTERNATIONAL
STANDARD

colour
inside

Cable networks for television signals, sound signals and interactive services –
Part 1-1: RF cabling for two way home networks


INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XA
ICS 33.060.30; 33.160.01 ISBN 978-2-88910-260-0
® Registered trademark of the International Electrotechnical Commission

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– 2 – 60728-1-1 © IEC:2010(E)
CONTENTS
FOREWORD.0H5
INTRODUCTION.1H7
1 Scope.2H9
2 Normative references .3H10
3 Terms, definitions, symbols and abbreviations.4H12
3.1 Terms and definitions .5H12
3.2 Symbols .6H18
3.3 Abbreviations .7H19
4 Methods of measurement for the home network.8H20
5 Performance requirements of the home network .9H21
5.1 General .10H21
5.2 Impedance .11H22
5.3 Performance requirements at the terminal input .12H22
5.3.1 General .13H22
5.3.2 Signal level.14H22
5.3.3 Other parameters .15H22
5.4 Performance requirements at system outlets .16H23
5.4.1 Minimum and maximum carrier levels .17H23
5.4.2 Mutual isolation between system outlets .18H23
5.4.3 Isolation between individual outlets in one household .19H23
5.4.4 Isolation between forward and return path .20H23
5.4.5 Long-term frequency stability of distributed carrier signals at any
system outlet .21H23
5.5 Performance requirements at the HNI.22H23
5.5.1 Minimum and maximum carrier levels at HNI1 .23H23
5.5.2 Minimum and maximum carrier levels at HNI2 and HNI3.24H23
5.6 Carrier level differences in the home network from HNI to system outlet.25H23
5.7 Frequency response within a television channel in the home network.26H24
5.7.1 General .27H24
5.7.2 Amplitude response.28H24
5.7.3 Group delay.29H24
5.8 Random noise produced in the home network .30H25
5.9 Interference produced into down stream channels within a home network .31H25
5.9.1 General .32H25
5.9.2 Multiple frequency intermodulation interference.33H25
5.9.3 Intermodulation noise .34H25
5.9.4 Crossmodulation.35H26
6 Home network design and examples .36H26
6.1 General .37H26
6.2 Basic design considerations .38H26
6.3 Implementation considerations .39H27
6.4 Home networks with coaxial and balanced cables .40H27
6.4.1 General .41H27
6.4.2 Network examples .42H27
6.4.3 Calculation examples .43H28
6.4.4 General considerations.44H38

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60728-1-1 © IEC:2010(E) – 3 –
6.4.5 Home network design in a MATV system .45H39
6.4.6 Return path examples.46H39
6.5 Different home network type (HNI3 Case C) (glass or plastic fibre optic
network) .47H39
6.6 Different home network type (HNI3 Case D) .48H40
6.6.1 General .49H40
6.6.2 Wireless links inside the home network .50H40
6.6.3 Applications of IEEE 802.11 (WLAN) .51H41
6.6.4 Available bands in the 2 GHz to 6 GHz frequency range.52H42
6.6.5 Main characteristics of a WLAN signal.53H42
6.6.6 Main characteristics of coaxial cables.54H43
6.6.7 Characteristics of WLAN signals at system outlet .55H43
6.6.8 Characteristics of signals at the TV system outlet.56H44
6.6.9 Example of diplexers and power splitters near the HNI .57H44
6.6.10 Example of system outlet for coaxial TV connector and WLAN
antenna .58H44
6.6.11 Examples of WLAN connection into home networks.59H45
Annex A (informative) Wireless links versus cable links .60H50
Annex B (informative) Isolation between radiating element and system outlet .61H53
Annex C (informative) MIMO techniques of IEEE 802.11n.62H55
Bibliography.63H57

Figure 1 – Examples of RF home network types. .64H8
Figure 2 – Examples of location of HNI for various home network types.65H15
Figure 3 – Examples of home network implementation using coaxial or balanced
cables.66H28
Figure 4 – Signal levels at HNI1 (flat splitter response).67H30
Figure 5 – Signal levels at HNI1 (+6 dB compensating splitter slope).68H31
Figure 6 – Signal levels at HNI2 (L ) (flat splitter/amplifier response) .69H32
1
Figure 7 – Signal levels at HNI2 (+6 dB compensating splitter/amplifier slope) .70H32
Figure 8 – Signal levels at HNI3 (flat splitter/amplifier response) .71H36
Figure 9 – Signal levels at HNI3 (+6 dB compensating splitter/amplifier slope) .72H36
Figure 10 – Example of a home network using optical fibres. .73H39
Figure 11 – Example of a home network using cable connection and cable/wireless
connection .74H41
Figure 12 – Example of a coupler (tandem coupler) to insert WLAN signals into the
home distribution network. .75H44
Figure 13 – Example of system outlet for coaxial TV connector and WLAN antenna.76H44
Figure 14 – Assumed properties of the filters in the system outlet.77H45
Figure 15 – Reference points for the examples of calculation of link loss or link budget .78H45
Figure B.1 – Required isolation and attenuation of a cut-off waveguide, with cut-off
frequency of 2 275 MHz and a length (L) of 25 cm or 15 cm.79H53
Figure C.1 – Principle of MIMO techniques according to IEEE 802.11n .80H55

Table 1 – Methods of measurement of IEC 60728-1 applicable to the home network .81H21
Table 2 – Amplitude response variation in the home network .82H24
Table 3 – Group delay variation in the home network.83H24

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Table 4 – Example of home network implementation with coaxial cabling (passive) from
HNI1 to system outlet .84H33
Table 5 – Example of home network implementation with coaxial cabling (active) from
HNI2 to system outlet .85H33
Table 6 – Example of home network implementation with balanced pair cables (active)
from HNI3 to coaxial terminal input (Case A) .86H37
Table 7 – Example of home network implementation with balanced pair cables (active)
from HNI3 to coaxial system outlet (Case B) .87H37
Table 8 – Maximum EIRP according to CEPT ERC 70-03 .88H42
Table 9 – Available throughput of the WLAN signal.89H43
Table 10 – Minimum signal level at system outlet (WLAN antenna).90H43
Table 11 – Loss from the system outlet to WLAN base station .91H46
Table 12 – Direct connection between two system outlets (TV outlets).92H47
Table 13 – Link budget between a WLAN equipment and the “WLAN base station”.93H47
Table 14 – Wireless connection between two WLAN equipment.94H48
Table 15 – Connection from a SO to a WLAN equipment .95H49
Table A.1 – Maximum distance for a wireless link (WLAN) in free space or inside a
home .96H51
Table A.2 – Maximum length of the cable.97H52
Table C.1 – MCSs that are mandatory in IEEE 802.11n .98H56

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60728-1-1 © IEC:2010(E) – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

CABLE NETWORKS FOR TELEVISION SIGNALS,
SOUND SIGNALS AND INTERACTIVE SERVICES –

Part 1-1: RF cabling for two way home networks


FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
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6) All users should ensure that they have the latest edition of this publication.
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60728-1-1 has been prepared by technical area 5: Cable networks
for television signals, sound signals and interactive services, of IEC technical committee 100:
Audio, viedeo and multimedia systems and equipment.
The text of this standard is based on the following documents:
FDIS Report on voting
100/1622/FDIS 100/1645/RVD

Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

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A list of all parts of the IEC 60728 series, under the general title Cable networks for television
signals, sound signals and interactive services, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in
the data related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.

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60728-1-1 © IEC:2010(E) – 7 –
INTRODUCTION
Standards of the IEC 60728 series deal with cable networks including equipment and
associated methods of measurement for headend reception, processing and distribution of
television signals, sound signals and their associated data signals, and for processing,
interfacing and transmitting all kinds of signals for interactive services using all applicable
transmission media.
This includes
1
• CATV 0F -networks,
• MATV-networks and SMATV-networks,
• individual receiving networks
and all kinds of equipment, systems and installations installed in such networks.
The extent of this standardisation work is from the antennas, special signal source inputs to
the headend or other interface points to the network up to the terminal input.
The standardization of any user terminals (i.e. tuners, receivers, decoders, multimedia
terminals, etc.) as well as of any coaxial, balanced and optical cables and accessories thereof
is excluded.
The reception of television signals inside a building requires an outdoor antenna and a
distribution network to convey the signal to the TV receivers.
This part of the IEC 60728 deals with the requirements and implementation guidelines for a
home network that can be realised with different techniques. The following types of home
networks (HN) are possible:
• passive coaxial home network;
• active coaxial home network;
• different home network types.
99HFigure 1 shows typical situations that are possible when considering RF home networks.
The RF home network can be realised using coaxial cables, balanced cables, optical cables
or radio links.

—————————
1
 This word encompasses the Hybrid Fibre Coaxial (HFC) networks used nowadays to provide
telecommunications services, voice, data and audio and video both broadcast and narrowcast.

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IEC  2523/09

Figure 1 – Examples of RF home network types

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60728-1-1 © IEC:2010(E) – 9 –
CABLE NETWORKS FOR TELEVISION SIGNALS,
SOUND SIGNALS AND INTERACTIVE SERVICES –

Part 1-1: RF cabling for two way home networks



1 Scope
This part of IEC 60728 provides the requirements and describes the implementation
guidelines of RF cabling for two-way home networks; it is applicable to any home network that
distributes signals provided by CATV/MATV/SMATV cable networks (including individual
receiving systems) having a coaxial cable output. It is also applicable to home networks
where some part of the distribution network uses wireless links, for example in place of the
receiver cord.
This part of IEC 60728 is therefore applicable to RF cabling for two-way home networks with
wired cords or wireless links inside a room and primarily intended for television and sound
signals operating between about 5 MHz and 3 000 MHz. The frequency range is extended to
6 000 MHz for distribution techniques that replace wired cords with a wireless two-way
communication inside a room (or a small number of adjacent rooms) that uses the 5 GHz to
6 GHz band.
In a building divided into apartment blocks, the distribution of the signals inside the home
starts from the home network interface (HNI) up to the system outlet or terminal input. The
requirements at the system outlet are given in IEC 60728-1, Clause 5 and the requirements at
the HNI are given in IEC 60728-1, Clause 7. In Clause 5 of this standard additional
requirements are given.
This standard deals with various possibilities to distribute signals in a home network, using
coaxial cables, balanced pair cables, fibre optic cables (glass or plastic) and also wireless
links inside a room (or a small number of adjacent rooms) to replace wired cords.
This standard gives references to basic methods of measurement of the operational
characteristics of the home cable network in order to assess its performance.
All requirements refer to the performance limits, which are obtained between the input(s) at
the home network interface (HNI) and the output at any system outlet when terminated in a
resistance equal to the nominal load impedance of the system, unless otherwise specified.
Where system outlets are not used, the above applies to the terminal input.
NOTE 1 If the home network is subdivided into a number of parts, using different transmission media (e.g. coaxial
cabling, balanced cabling, optical cabling, wireless links) the accumulation of degradations should not exceed the
figures given below.
NOTE 2 Performance requirements of return paths as well as special methods of measurement for the use of the
return paths in cable networks are described in IEC 60728-10.
Clause 5 defines the performance limits measured at system outlet or terminal input for an
unimpaired (ideal) test signal applied at the HNI. Under normal operating conditions for any
analogue channel and meeting these limits, the cumulative effect of the impairment of any
single parameter at the HNI and that due to the home network will produce picture and sound
signals not worse than Grade four on the five-grade impairment scale contained in ITU-R
BT.500. These requirements are given in IEC 60728-1-2. For digitally modulated signals the
quality requirement is a QEF (Quasi Error Free) reception.

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This standard describes the physical layer connection for home networks. Description of
protocols required for Layer 2 and higher layers is out of the scope of this standard. Logical
connections between devices within the home network are therefore not always guaranteed.
2 Normative references
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition
of the referenced document (including any amendments) applies.
IEC 60050-705, International Electrotechnical Vocabulary – Chapter 705: Radio wave
propagation
IEC 60050-712, International Electrotechnical Vocabulary – Chapter 712: Antennas
IEC 60050-725, International Electrotechnical Vocabulary – Chapter 725: Space
radiocommunications
IEC 60617, Graphical symbols for diagrams
IEC 60728-1:2007, Cable networks for television signals sound signals and interactive
services – Part 1: System performance of forward paths
IEC 60728-1-2, Cable networks for television signals sound signals and interactive services
– Part 1-2: Performance requirements for signals delivered at system outlet in operation
IEC 60728-3:2005, Cable networks for television signals sound signals and interactive
services – Part 3: Active wideband equipment for coaxial cable networks
IEC 60728-10, Cable networks for television signals, sound signals and interactive services
– Part 10: System performance of return paths
IEC 60966 (all parts), Radio frequency and coaxial cable assemblies
IEC 60966-2-4, Radio frequency and coaxial cable assemblies – Part 2-4: Detail
specification for cable assemblies for radio and TV receivers – Frequency range 0 MHz to 3
000 MHz, IEC 61169-2 connectors
IEC 60966-2-5, Radio frequency and coaxial cable assemblies – Part 2-5: Detail
specification for cable assemblies for radio and TV receivers – Frequency range 0 MHz to 1
000 MHz, IEC 61169-2 connectors
IEC 60966-2-6, Radio frequency and coaxial cable assemblies – Part 2-6: Detail
specification for cable assemblies for radio and TV receivers – Frequency range 0 MHz to 3
000 MHz, IEC 61169-24 connectors
IEEE 802.11, 1999 IEEE Standards for Information Technology – Telecommunications and
Information Exchange between Systems – Local and Metropolitan Area Network – Specific
Requirements – Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer
2
(PHY) Specifications 1F I
—————————
2
Parts of IEEE 802.11 are reproduced in ISO/IEC 8802-11:2005, Information technology – Telecommunications
and information exchange between systems – Local and metropolitan area networks – Specific requirements –
Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specification

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60728-1-1 © IEC:2010(E) – 11 –
IEEE 802.11a-1999, IEEE Standard for Information technology – Telecommunications and
information exchange between systems – Local and metropolitan area networks – Specific
requirements – Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer
(PHY) specifications – Amendment 1: High-speed Physical Layer in the 5 GHz band
IEEE 802.11b-1999 Supplement to 802.11-1999, Wireless LAN MAC and PHY
specifications: Higher speed Physical Layer (PHY) extension in the 2.4 GHz band
IEEE 802.11e-2005, IEEE Standard for Information technology – Telecommunications and
information exchange between systems – Local and metropolitan area networks – Specific
requirements Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY)
specifications: Amendment 8: Medium Access Control (MAC) Quality of Service
Enhancements
IEEE 802.11g-2003 IEEE Standard for Information technology – Telecommunications and
information ex
...