EN 50083-5:2001

SLOVENSKI STANDARD
01-december-2003
1DGRPHãþD
SIST EN 50083-5:1995
Cable networks for television signals, sound signals and interactive services - Part
5: Headend equipment
Cable networks for television signals, sound signals and interactive services -- Part 5:
Headend equipment
Kabelnetze für Fernsehsignale, Tonsignale und interaktive Dienste -- Teil 5: Geräte für
Kopfstellen
Réseaux de distribution par câbles pour signaux de télévision, signaux de radiodiffusion
sonore et services interactifs -- Partie 5: Matériels de tête de réseau
Ta slovenski standard je istoveten z: EN 50083-5:2001
ICS:
33.060.40 Kabelski razdelilni sistemi Cabled distribution systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 50083-5
NORME EUROPÉENNE
EUROPÄISCHE NORM March 2001
ICS 33.060.40 Supersedes EN 50083-5:1994
English version
Cable networks for television signals, sound signals and
interactive services
Part 5: Headend equipment
Réseaux de distribution par câbles Kabelnetze für Fernsehsignale,
pour signaux de télévision, signaux Tonsignale und interaktive Dienste
de radiodiffusion sonore et services Teil 5: Geräte für Kopfstellen
interactifs
Partie 5: Matériels de tête de réseau
This European Standard was approved by CENELEC on 1998-01-01. CENELEC members are bound
to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any
other language made by translation under the responsibility of a CENELEC member into its own
language and notified to the Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech
Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg,
Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2001 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50083-5:2001 E
Foreword
This European Standard was prepared by CENELEC Technical Committee TC 209, "Cable
networks for television signals, sound signals and interactive services" on the basis of
EN 50083-5:1994 and the first amendment to EN 50083-5.
The text of this first amendment was submitted to the Unique Acceptance Procedure and was
approved by CENELEC on 1998-01-01 with the request to prepare a second edition of
EN 50083-5, by incorporating this amendment into the European Standard EN 50083-5:1994.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2001-10-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2001-10-01
Annexes designated "normative" are part of the body of the standard.
Annexes designated "informative" are given for information only.
In this standard, annexes A, B and D are normative and annexes C and E are informative.
__________
- 3 - EN 50083-5: 2001
Contents
Page
1 Scope.4
1.1 General.4
1.2 Specific scope of this part 5.4
2 Normative references.7
3 Terms, definitions, symbols and abbreviations.8
3.1 Terms and definitions .8
3.2 Symbols.11
3.3 Abbreviation.12
4 Methods of measurement.13
4.1 Single-channel intermodulation.13
4.2 Three-carrier intermodulation measurement.14
4.3 Two carrier intermodulation measurements for second and third order products .15
4.4 Carrier-to-spurious signal ratio at the output.16
4.5 Television carrier-to-noise ratio.18
4.6 Differential gain and phase for PAL/SECAM signals .22
4.7 Group delay variation.26
4.8 2T-pulse response, K-factor .27
4.9 Chrominance-luminance delay inequalities (20T-pulse method).28
4.10 Luminance non-linearity.30
4.11 Intermodulation distortion (FM stereo radio) .30
4.12 Decoding margin (Teletext).31
4.13 Hum modulation of carrier.33
5 Performance requirements and recommendations .36
5.1 Safety .36
5.2 Electromagnetic compability .36
5.3 Environmental.36
5.4 Marking.36
5.5 Mean time operation between failure (MTBF).37
6 Signal requirements .37
6.1 Indoor units.37
6.2 Outdoor units .40
7 Data publication requirements.40
7.1 General.40
7.2 Indoor units - TV (AM and FM).41
7.3 Indoor units - FM radio.45
7.4 Outdoor units .46
Annex A (normative) Definition of the specified test frequency range for
return loss and noise figure .48
Annex B (normative) Audio connector .49
Annex C (informative) Selectivity diagram for adjacent channel transmission .50
Annex D (normative) Special national conditions .54
Annex E (informative) Measurement errors which occur due to missmatched equipment.55

1 Scope
1.1 General
Standards of EN 50083 series deal with cable networks for television signals, sound signals and
interactive services including equipment, systems and installations
• for headend reception, processing and distribution of television and 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.

All kinds of networks like
• CATV-networks,
• MATV-networks and SMATV-networks,
• Individual receiving networks
and all kinds of equipment, systems and installations installed in such networks, are within this
scope.
The extent of this standardization work is from the antennas, special signal source inputs to the
headend or other interface points to the network up to the system outlet or the terminal input,
where no system outlet exists.

The standardization of any user terminals (i.e. tuners, receivers, decoders, multimedia terminals
etc.) as well as of any coaxial and optical cables and accessories therefor is excluded.
1.2 Specific scope of this part 5
This standard defines the characteristics of equipment used in the headends of terrestrial
broadcast and satellite receiving systems (without satellite outdoor units and without those
broadband amplifiers in the headend as described in EN 50083-3). The satellite outdoor units
for FSS are described in standard ETS 300 158, for BSS in standard ETS 300 249. Test
methods for both types (FSS and BSS) of satellite outdoor units are laid down in ETS 300 457.
This standard
• covers the frequency range 5 MHz to 3000 MHz;
• identifies performance requirements for certain parameters;
• lays down data publication requirements for certain parameters;
• stipulates methods of measurements;
• introduces minimum requirements defining quality grades (Q-grades).
As far as possible this standard only deals with the interfaces between headend equipment and
only explains the function of the equipment if this is necessary to support the description of the
interfaces.
Coder, transcoder, encrypter, decrypter etc. are not described in this standard. If such
equipment are used in headends, the relevant parameters for RF, video, audio and data
interfaces have to be met.
According to the definitions in clause 3 the headends are divided into the following three quality
grades:
Grade 1: local headend / remote headend
Grade 2: hub headend
Grade 3: MATV headend / individual reception headend

- 5 - EN 50083-5: 2001
Practical experience has shown these types meet most of the technical requirements necessary
for supplying a minimum signal quality to the subscribers. This classification shall not be
considered as a requirement but as the information for users and manufacturers on the
minimum quality criteria of the material required to install networks of different sizes. The system
operator has to select appropriate material to meet the minimum signal quality at the
subscriber's outlet and to optimise cost performance, taking into account the size of the network
and local circumstances.
Terrestrial and/or
Satellite Reception
Remote
Headend
Terrestrial and
Satellite Reception
Local
Headend
Hub
Headend
Figure 1 - Example of headends

OUTDOOR INDOOR
Demodulator Transcoder Modulator
Antennas
+
Preamplifier
VHF/UHF
FM Radio, DAB
f
f
Pilot
Data
Video Encoder
Audio
Polarizer
f
Video
f
Audio
LNB
M
VHF/UHF
FM-TV
1st SAT IF
ETS 300 158
ETS 300 249
FM-TV
1st SAT IF
f
f
Figure 2 - Example of headend
Polarmount
- 7 - EN 50083-5: 2001
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions
of any of these publications apply to this European Standard only when incorporated in it by
amendment or revision. For undated references the latest edition of the publication referred to
applies.
EN 50083 Cable networks for television signals, sound signals and interactive
services
EN 50083-1 1993 Part 1: Safety requirements
+ A1 1997
+ A2 1997
EN 50083-2 1995 Part 2: Electromagnetic compatibility for equipment
+ A1 1997
EN 50083-3 1998 Part 3: Active wideband equipment for coaxial cable networks
EN 60068/HD 323 series Environmental testing/Basic environmental testing procedures
(IEC 60068 series)
EN 60130-9 2000 Connectors for frequencies below 3 MHz – Part 9: Circular
connectors for radio and associated sound equipment
(IEC 60130-9:2000)
EN 60244-5 1994 Methods of measurement for radio transmitters
Part 5: Performance characteristics for television transmitters
(IEC 60244-5:1992)
EN 60417-1 1999 Graphical symbols for use on equipment
Part 1: Overview and application (IEC 60417-1:1998)
EN 60417-2 1999 Graphical symbols for use on equipment
Part 2: Symbol originals (IEC 60417-2:1998)
EN 60529 1991 Degrees of protection provided by enclosures (IP Code)
+ corr. May 1993 NOTE: Basic Safety Publication
(IEC 60529:1989)
EN 300 163 1998 Television systems - NICAM 728: Transmission of two-channel
V1.2.1 digital sound with terrestrial television systems B, G, H, I, K1 and L
EN 300 473 1997 Digital Video Broadcasting (DVB) - Satellite Master Antenna
V1.1.2 Television (SMATV) distribution systems
HD 134.2 S2 1984 Radio frequency connectors - Part 2: Coaxial unmatched connector
(IEC 60169-2:1965 + A1:1982)
HD 571 S1 1990 General principles
...