CLC/TS 50607:2013

SLOVENSKI STANDARD
01-november-2013
Distribucija satelitskih signalov po enojnem koaksialnem kablu - Druga generacija
inštalacij
Satellite signal distribution over a single coaxial cable - Second generation
Verteilen von Satellitensignalen über ein Koaxialkabel - Zweite Generation
Distribution de signaux satellitaires sur un unique câble coaxial - Installations de seconde
génération
Ta slovenski standard je istoveten z: CLC/TS 50607:2013
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 50607
SPÉCIFICATION TECHNIQUE
September 2013
TECHNISCHE SPEZIFIKATION
ICS 33.060.40
English version
Satellite signal distribution over a single coaxial cable ‒ Second
generation
Distribution de signaux satellitaires sur un Verteilen von Satellitensignalen über ein
unique câble coaxial - Koaxialkabel ‒ Zweite Generation
Installations de seconde génération

This Technical Specification was approved by CENELEC on 2013-09-04.

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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

CEN-CENELEC Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. CLC/TS 50607:2013 E
Contents Page
Foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms, definitions and abbreviations . 7
3.1 Terms and definitions . 7
3.2 Abbreviations . 7
4 System architecture . 8
5 SCIF control signals. 10
5.1 DC levels . 10
5.2 Method of the data bit signalling . 12
6 Structure and format of the SCD2 messages . 13
6.1 Backwards Compatibility to EN 50494 . 13
6.2 Non-DiSEqC structure . 13
6.3 Uni-directional operation . 13
6.4 Bi-directional operation . 13
7 SCD2 commands . 13
7.1 ODU_Channel_change . 13
7.2 ODU_Channel_change_PIN . 15
7.3 ODU_UB_avail . 15
7.4 ODU_UB_PIN . 16
7.5 ODU_UB_inuse . 17
7.6 ODU_UB_freq . 18
7.7 ODU_UB_switches . 19
8 Conventions . 19
8.1 UB slots numbering . 19
8.2 Numbering of satellite IF banks . 20
9 Traffic collision management rules . 20
9.1 General . 20
9.2 Automatic detection of SCIF control signal failure . 21
9.3 Pseudo-random repeat . 21
Annex A (normative) Implementation rules . 23
A.1 User interface . 23
A.2 Installation impedance . 23
A.3 Signal reflection and return loss in installations . 24
A.4 Power supply of the SCIF . 24
A.5 Remarks concerning power supply . 25

- 3 - CLC/TS 50607:2013
Figures Page
Figure 1 — General architecture of the single cable distribution. 6
Figure 2 — General system operation and UB slot frequency mapping . 8
Figure 3 — Installation example, system with reception of one orbital position (4 Satellite IF banks) by two
receivers (2 UB slots) . 9
Figure 4 — Installation example implementing the reception of two orbital positions (8 satellite IF banks) by
four receivers (4 UB slots) . 9
Figure 5 — Installation example implementing the reception of four orbital positions (16 satellite IF banks)
for 12 receivers (12 UB slots) . 10
Figure 6 — Signal sent by the receiver for uni-directional communication . 11
Figure 7 — Signal sent by the receiver for bi-directional communication . 12
Figure 8 — Bit signalling according to DiSEqC format . 13
Figure 9 — SCIF control signal collision between two receivers and recovery mechanism . 22
Figure A.1 — Solution for masking the impedance of the installation during the SCIF control signals . 23
Figure A.2 — Implementation of an external power supply . 24

Tables Page
Table 1 -Timing for unidirectional communication . 11
Table 2 -Timing for bidirectional communication . 12
Table 3 ‒ UB slot numbering . 20

Foreword
This document (CLC/TS 50607:2013) 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 [and/or CEN] shall not be held responsible for identifying any or all such patent rights.

- 5 - CLC/TS 50607:2013
Introduction
In EN 61319-1:1996/A11:1999, the interfaces for the control and command of the devices
associated with the satellite receivers are described in the following clauses:
 Clause 4: Interfaces requirements for polarizer and polar switchers;
 Clause 5: Interfaces requirements for low-noise block converters (LNB).
In these clauses, analogue techniques are described for controlling the LNB and polar switchers.
TM
In the DiSEqC Bus Functional Specification, the “Digital Satellite Equipment Control Bus” (called
DiSEqC) is introduced as a single method of communication between the satellite and the
peripheral equipment, using only the existing coaxial cables. The existing EN 50494 “Satellite signal
distribution over a single coaxial cable in single dwelling installations” describes a system for
distributing signals via single coaxial cable issued from different bands and polarisations to several
satellite receivers This specification is limited to 8 units per output of the Single Cable Interface and
to 8 Satellite IF banks (bands, feeds, polarisations).
The second generation described in this Technical Specification is intended for single and multiple
dwelling installations and includes the following enhancements compared to EN 50494:
 The number of demodulators is extended to a maximum of 32 units per output of the Single
Cable Interface (hereafter referred to as SCIF) device.
 The system is scaled for a maximum number of 256 Satellite IF banks (bands, feeds,
polarisations)
 The SCIF replies, which may be used during installation process, are also based on DiSEqC.
 Equipment according to this Technical Specification is downwards compatible to the
specifications provided by EN 50494.

1 Scope
This Technical Specification describes:
 the system physical structure;
 the system control signals, which implement a set of messages using DiSEqC physical layer but
not the DiSEqC message structure;
 the definition of identified configurations;
 the management of the potential collisions in the control signals traffic.
Figure 1 illustrates the physical system configuration considered in this Technical Specification.
Several satellite signal demodulators can receive signals from any of the input signal banks
(Bank 1, Bank 2, ⋅⋅⋅⋅ Bank M, with M ≤ 256) of the LNB or the switch. The signals selected by the
demodulators (or receivers) are transported via a single cable to these demodulators (Receiver 1,
Receiver 2, ⋅⋅⋅⋅ Receiver N, with N ≤ 32).
To achieve these single cable distributions, the Single Cable Interface (SCIF, likely embedded in a
LNB or a Switch) features some specific functions and characteristics.
SINGLE CABLE
SINGLE CABLE
RReceieceivveerr 1 1
IINTNTEERFRFAACECE: : SSCICIFF
Bank 1
Bank 1
Receiver 2
Receiver 2
LLNB NB
PPoowwerer
or
or
Bank 2
Bank 2
spsplliitttterer
SSWWIITTCCHH
BBanank Mk M
Receiver N
Receiver N
SSiinngglle cabe cablle e
ccoonnnneeccttiioonn
AA rreceieceivverer mmaayy i innttegegrratate see sevveerralal d dememoodduullatatoorrs s

Figure 1 — General architecture of the single cable distribution
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
EN 50494 Satellite signal distribution over single coaxial cable in single
dwelling installations
EN 60728-4 Cable networks for television signals, sound signals and interactive
services – Part 4: Passive
...