CLC/TS 50083-2-3:2018

SLOVENSKI STANDARD
01-januar-2019
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Cable networks for television signals, sound Signals and interactive services - Part 2-3:
LTE (4G) Interference Mitigation Filters
Kabelnetze für Fernsehsignale, Tonsignale und interaktive Dienste - Teil 2-3: LTE (4G)
Filter zur Vermeidung von Störungen
Réseaux de distribution par câbles pour signaux de télévision, signaux de radiodiffusion
sonore et services interactifs - Partie 2-3 : Filtres d'atténuation du brouillage pour les
réseaux LTE (4G)
Ta slovenski standard je istoveten z: CLC/TS 50083-2-3:2018
ICS:
33.060.40 Kabelski razdelilni sistemi Cabled distribution systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL SPECIFICATION CLC/TS 50083-2-3

SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
March 2018
ICS 33.060.40
English Version
Cable networks for television signals, sound Signals and
interactive services - Part 2-3: LTE (4G) Interference Mitigation
Filters
Réseaux de distribution par câbles pour signaux de Kabelnetze für Fernsehsignale, Tonsignale und interaktive
télévision, signaux de radiodiffusion sonore et services Dienste - Teil 2-3: LTE (4G) Filter zur Vermeidung von
interactifs - Partie 2-3 : Filtres d'atténuation du brouillage Störungen
pour les réseaux LTE (4G)
This Technical Specification was approved by CENELEC on 2017-12-25.

CENELEC members are required to announce the existence of this TS in the same way as for an EN and to make the TS available promptly
at national level in an appropriate form. It is permissible to keep conflicting national standards in force.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. CLC/TS 50083-2-3:2018 E

Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms, definitions and abbreviations . 5
3.1 Terms and definitions . 5
3.2 Abbreviations . 6
4 LTE Filter Characteristics . 6
4.1 General . 6
4.2 Pass-band and stop-band of a LTE filter (800 MHz band) . 6
4.3 Types of standard for a LTE filter . 7
4.4 LTE filter specifications . 7
4.5 Connections, EMC, environmental and other factors . 8
4.5.1 Connections . 8
4.5.2 EMC – Screening effectiveness . 8
4.5.3 DC and 50 Hz line power considerations . 8
4.5.4 Climate and operating temperature range . 8
4.5.5 Drop test . 9
4.5.6 Fixings . 9
4.6 Information to be supplied by the manufacturer or responsible vendor . 9
Annex A (informative) Signal protection from LTE signals . 10
A.1 Frequency allocation of LTE signals in the 800 MHz band . 10
A.2 LTE-UE field strength in the 800 MHz band . 10
A.3 LTE-BS field strength in the 800 MHz band . 11

European foreword
This document (CLC/TS 50083-2-3:2018) has been prepared by CLC/TC 209 “Cable networks for television
signals, sound signals and interactive services”.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Introduction
Standards and deliverables of EN 60728 series and EN 50083 series deal with cable networks including
equipment and associated methods of measurement for headend reception, processing and distribution of
television and sound signals and for processing, interfacing and transmitting all kinds of data signals for
interactive services using all applicable transmission media. These signals are typically transmitted in
networks by frequency-multiplexing techniques.
This includes for instance:
a) regional and local broadband cable networks;
b) extended satellite and terrestrial television distribution systems;
c) individual satellite and terrestrial television receiving systems;
and all kinds of equipment, systems and installations used in such cable networks, distribution and receiving
systems.
The extent of this standardization work is from the antennas and/or special signal source inputs to the
headend or other interface points to the network up to the terminal input of the customer premises
equipment.
The standardization work will consider coexistence with users of the RF spectrum in wired and wireless
transmission systems.
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.
1 Scope
This Technical Specification provides requirements to passive filters intended to reduce RF interference from
LTE Base Stations (LTE-BS) and LTE User Equipment (LTE-UE) to receiving equipment and cable
distribution systems of broadcast DVB-T and DVB-T2 signals in the VHF and UHF bands. While primarily
intended to be used with VHF/UHF DVB-T and DVB-T2 receivers and signal distribution systems, filters can
also be useful for mitigation of interference to VHF FM or DAB radio.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements 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.
EN 50083-2:2012, Cable networks for television signals, sound signals and interactive services - Part 2:
Electromagnetic compatibility for equipment
EN 60529:1991, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989)
EN 60728-11, Cable networks for television signals, sound signals and interactive services – Part 11: Safety
(IEC 60728-11)
EN 61169-2, Radio-frequency connectors - Part 2: Sectional specification - Radio frequency coaxial
connectors of type 9,52 (IEC 61169-2)
EN 61169-24, Radio-frequency connectors - Part 24: Sectional specification - Radio frequency coaxial
connectors with screw coupling, typically for use in 75 ohm cable networks (type F) (IEC 61169-24)
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1.1
bandwidth
width of a frequency band over which a given characteristic of an equipment or transmission channel does
not differ from its reference value by more than a specified amount or ratio
3.1.2
pass-band
frequency band throughout which the attenuation is less than a specified value
3.1.3
stop-band
frequency band throughout which the attenuation is greater than a specified value
3.2 Abbreviations
For the purposes of this document, the following abbreviations apply.
BS Base Station
DC direct current
EMC electromagnetic compatibility
LTE long term evolution
RF radio frequency
MATV Master Antenna Television
TV television
UHF ultra high frequency
UE user eqipment
VHF very high frequency
4 LTE Filter Characteristics
4.1 General
To comply with this specification a filter shall pass a range of frequencies (the pass-band) which includes a
number of VHF and UHF TV channels and shall attenuate a range of LTE frequencies (the stop-band). In all
cases the stop-band lies above the pass-band.
4.2 Pass-band and stop-band of a LTE filter (800 MHz band)
Pass-band (terrestrial broadcasting service):
a) the lower boundary of the pass-band shall lie between 0 Hz (DC) and 174 MHz;
b) the upper boundary of the pass-band shall lie on the upper edge of a TV channel, UHF channel N, such
that the pass-band upper bound frequency is (8*N+310) MHz. The value of N shall be in the range 58 to
60.
It should be noted that a filter of the band-stop (or band-reject) type can be used to meet this specification.
Where this type of filter is used, the range of frequencies lying above the defined stop-band is not considered
to be part of the pass-band for the purpose of this specification.
NOTE 1 What the filter does above 862 MHz might be advantageous and could offer some roll-off in the 900 MHz
mobile spectrum, but this is outside the scope of this specification.
Stop-band: shall be from 791 MHz to 862 MHz, divided in two parts:
1) Stop-band 1: 791 MHz to 821 MHz (LTE Base Station (LTE-BS))
2) Stop-band 2: 832 MHz to 862 MHz (LTE User Equipment (LTE-UE))
NOTE 2 It is intended to add an extended stop-band option in a future revision of this specification, allowing the
option to cover the proposed 700 MHz LTE band once the extent of that band is agreed.
4.3 Types of standard for a LTE filter
Three types of standard for a LTE filter are defined, considering the stop-band attenuation performance, as
defined below.
a) Standard 1 LTE filter
“Professional” filter for use in large cable systems incorporating distribution amplifiers and/or where greater
attenuation of LTE interference is required in the case that channel 60 is not distributed.
b) Standard 2 LTE filter
“Consumer” filter intended for use with a single receiver or a number of receivers fed via a passive
distribution network.
c) Standard 3 LTE filter
“Typical” filter for use in MATV systems incorporating distribution amplifiers and/or where a typical
attenuation for LTE interference mitigation is required.
4.4 LTE filter specifications
The nominal characteristic impedance for the LTE filters is 75 Ω, to be used also in measurements. The main
LTE filter characteristics are specified in Table 1.
Table 1 — LTE filter specifications
Parameter Requirement Note
Standard 1 filter Standard 2 filter Standard 3 filter
Pass-band (excluding any band edge relaxation) 1
UHF channel N
58 59 59
Insertion loss ≤ 1,5 dB ≤ 2,0 dB ≤ 1,5 dB 2
Input/output return loss ≥ 16 dB ≥ 14 dB ≥ 16 dB 3
Maximum amplitude response variation 4 dB 6 dB 4 dB 4
within channel N UHF
Maximum group delay variation 50 ns 50 ns 50 ns 4
within channel N UHF
a
Pass-band (optional band edge relaxation)
UHF channel N 59 60 60
Insertion loss ≤ 4,0 dB ≤ 5,0 dB ≤ 4,0 dB 2
Input/output return loss ≥ 12 dB ≥ 10 dB ≥ 12 dB 3
Maximum amplitude response variation 6 dB 8 dB 6 dB 4
within channel N UHF
Maximum group delay variation 250 ns 250 ns 250 ns 4
within channel N UHF
Stop-band1 (791 MHz to 821 MHz)(LTE-BS)
Insertion loss ≥ 55 dB ≥ 25 dB ≥ 30 dB 2
Stop-band2 (832 MHz to 862 MHz)(LTE-UE)

Insertion loss ≥ 30 dB ≥ 15 dB ≥ 15 dB 2
...