CLC/TS 50607:2013

Satellite signal distribution over a single coaxial cable - Second generation

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.

Verteilen von Satellitensignalen über ein Koaxialkabel ‒ Zweite Generation

Distribution de signaux satellitaires sur un unique câble coaxial - Installations de seconde génération

Distribucija satelitskih signalov po enojnem koaksialnem kablu - Druga generacija inštalacij

Ta tehnična specifikacija opisuje: – fizično sestavo sistema; – kontrolne signale sistema, ki uvedejo nabor sporočil s fizično plastjo DiSEqC, vendar ne s sestavo sporočil DiSEqC; – definicijo prepoznanih konfiguracij; – upravljanje potencialnih kolizij kontrolnih signalov. Slika 1 prikazuje konfiguracijo fizičnega sistema, ki jo obravnava ta tehnična specifikacija. Več demodulatorjev satelitskega signala lahko sprejema signale iz katerega koli vhodnega niza signalov (Niz 1, Niz 2, •••• Niz M, pri čemer je M ≤ 256) LNB ali stikala. Signali, ki jih izberejo demodulatorji (ali sprejemniki), se prenesejo prek enega kabla v te demodulatorje (Sprejemnik 1, Sprejemnik 2, •••• Sprejemnik N, pri čemer je N ≤ 32). Za doseganje teh porazdelitev enega kabla vmesnik SCIF (Single Cable Interface, ki je verjetno vdelan v LNB ali stikalo) vključuje nekatere posebne funkcije in karakteristike.

General Information

• Status: Withdrawn
• Publication Date: 05-Sep-2013
• ICS: 33.060.40 - Cabled distribution systems
• Technical Committee: CLC/TC 209 - Cable networks for television signals, sound signals and interactive services
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 20-Oct-2017
• Completion Date: 20-Oct-2017
• Ref Project: SIST-TS CLC/TS 50607:2013 - Satellite signal distribution over a single coaxial cable - Second generation

Relations

• Replaced By: EN 50607:2015 - Satellite signal distribution over a single coaxial cable - Second generation
• Effective Date: 29-Jan-2023

Standards Content (Sample)

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 wideband equipment for coaxial cable
networks
EN 61319-1:1996 + Interconnections of satellite receiving equipment – Part 1: Europe
A11:1999 (IEC 61319-1:1995)
ISO/IEC 13818-1 Information technology – Generic coding of moving pictures and
associated audio information – Part 1
TM
DiSEqC Bus Functional Version 4.2, February 25, 1998
Specification http://www.eutelsat.com/satellites/4_5_5.html

- 7 - CLC/TS 50607:2013
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply:
3.1.1
bank
group of contiguous channels belonging to a polarisation and/or a band
3.1.2
channel
radio frequency transponder signal
3.1.3
demodulator
electronic device integrating at least a tuner and a demodulator
3.1.4
receiver
electronic equipment embedded in a cabinet and integrating all functions for demodulating and decoding the
received satellite signals (a receiver may integrate several demodulators)
3.1.5
universal LNB
LNB with the following characteristics: operation in the Ku bands (10,7 GHz  12,75 GHz); local oscillator
frequency is 9,75 GHz for signal frequencies lower than 11,7 GHz and local oscillator frequency is 10,6 GHz
otherwise
3.2 Abbreviations
CW Continuous Wave
DC Direct Current
DiSEqC Digital Satellite Equipment Control
IF Intermediate Frequency
LNB Low Noise Blockconverter
MDU Multiple Dwelling Unit
MSB Most Significant Bit
ODU Out-Door Unit
PCR Program Clock Reference
PIN Personal Identification Number
PWK Pulse Width Keying
SCD2 Single Cable Distribution 2 (second generation)
SCIF Single Cable Interface
STB Set-Top Box
UB User Band
4 System architecture
In the single coaxial cable distribution system, the bandwidth of the shared coaxial cable is divided
into slots (user band: UB). The number of slots Nb_ub varies from one application to another; the
number of slots Nb_ub is a characteristic of the SCIF.
The system defined in this Technical Specification limits the number of UB slots to 32 per output of
the SCIF.
Each receiver connected to the single coaxial cable distribution is allocated to one UB slot. This
allocation is done either in static or other modes.
In the static mode, the allocation of the UB slot is done during the installation of the satellite
receiver. Only the static mode is considered in this document.
NOTE Other modes are not described in this document but could be considered in a further release or annex of this
document.
After the slot allocation, the tuner of the receiver operates at a single frequency (centre of the slot
UB). To select a desired channel (frequency Fd), the demodulator sends a SCIF control signal that
provides the following information:
 select the bank (band, feed, polarisation) that carries the desired signal;
 select the frequency (Fd) of the desired signal;
 designate the UB slot on which the desired signal is expected.
Figure 2 illustrates the frequency mapping for such a single coaxial cable system.
Figure 3, Figure 4 and Figure 5 illustrate various examples for implementing the single cable
distribution system (other application scenarios are possible).
SSIINGNGLLEE CABL CABLEE
IINTNTEERFRFAACECE S SCICIFF
SSiinngglle cae cabblle e
Receiver 1
Receiver 1
coconnnnectectiioonn
BBanank 1k 1
LNB
LNB
PoPowweerr
RReecceiveiverer 2 2
or
or
BBanank 2k 2
sspplliittetterr
SWITCH
SWITCH
BBanank Mk M
Receiver N
Receiver N
Fd3Fd3
Bank 1
Bank 1
Fd2Fd2
UIUIFF Bank 2
Bank 2
iinnppuuttss
Fd1Fd1
Bank M
Bank M frequency
frequency
UIUIFF
oouuttppuutt
UB_UB_22
UB_UB_11 UB_UB_33 UB_UB_TT
TT= N= Nbb__uubb
Figure 2 — General system operation and UB slot frequency mapping

- 9 - CLC/TS 50607:2013
BBanank 1k 1
Power
Power
spsplliitttterer
BBanank 2k 2
Receiver 1
Receiver 1
SSCICIFF
BBanank 3k 3
Receiver 2
Receiver 2
Bank 4
Bank 4
NNuummbbeerr o off bbaannkkss = = N Nbb__BB == 4 4
Number of user slots = Nb_ub = 2
Number of user slots = Nb_ub = 2

Figure 3 — Installation example, system with reception of one orbital position
(4 Satellite IF banks) by two receivers (2 UB slots)
Bank 1
Bank 1
SSaatteellitllitee
AA
Bank 2
Bank 2
RReceieceivverer 11
Power
Power
BBanank 3k 3
splitter
splitter
Receiver 2
Bank 4 Receiver 2
Bank 4
SSCICIFF
BBanank 5k 5
Satellite
Satellite
B Receiver 3
B Receiver 3
BBanank 6k 6
RReceieceivverer 44
BBanank 7k 7
BBanank 8k 8
Number of banks = Nb_B = 8
Number of banks = Nb_B = 8
Number of user slots = Nb_ub = 4
Number of user slots = Nb_ub = 4

Figure 4 — Installation example implementing the reception of two orbital positions
(8 satellite IF banks) by four receivers (4 UB slots)

BBBBanananank 1k 1k 1k 1
SSSSaaaatttteeeellitllitllitlliteeee
AAAA
BBanank 2k 2
BBanank 2k 2
RRRReceieceieceieceivvvverererer  1111
PPPPowowowoweeeerrrr
BBBBanananank 3k 3k 3k 3
spsplliitttterer
spsplliitttterer
RReceieceivverer 22
RReceieceivverer 22
BBBBanananank 4k 4k 4k 4
SSCICIFF
SSCICIFF
BBBBanananank 5k 5k 5k 5131313
SSaatteellitllitee
SSaatteellitllitee
BB RReceieceivverer 33
BB RReceieceivverer 33
DDD
BBBBanananank 6k 6k 6k 6141414
RRRReceieceieceieceivvvverererer  1114444222
BBBBanananank 7k 7k 7k 7
BBBBanananank 8k 8k 8k 8
NNuummbbeerr o off bbaannkkss = = N Nbb__BB == 8 8
NNuummbbeerr o off bbaannkkss = = N Nbb__BB == 8 8111666
NNuummbbeerr o off uusseerr s slloottss = = N Nbb__ubub = = 4 4111222
NNuummbbeerr o off uusseerr s slloottss = = N Nbb__ubub = = 4 4

Figure 5 — Installation example implementing the reception of four orbital positions
(16 satellite IF banks) for 12 receivers (12 UB slots)
5 SCIF control signals
5.1 DC levels
In a single coaxial cable distribution system, all controls issued by the receivers (demodulators) use
the DiSEqC physical layer.
The single coaxial cable distribution system is not backwards compatible with the former 13/18 V
control associated with a continuous 22 kHz tone. The single coaxial cable distribution system is
also not backwards compatible with the tone burst signalling.
In single coaxial cable distribution systems, the signal-sending receiver generates a high DC level
upon which the SCIF control signals are added. After sending the SCIF control signal, the receiver
returns to an idle mode in which it generates a low DC level onto the single cable distribution
TM
system (see Figure 6). With reference to the DiSEqC Bus Functional Specification, the low and
high DC level shall have the following limits on the signal-sending-receiver side:
 LOW _DC value: 12,5 V to 14 V;
 HIGH_ DC value: 17 V to 19 V.
TM
For uni-directional communication (DiSEqC level 1.0; based on the DiSEqC Bus Functional
Specification), the timing shall have the following limits according to Table 1:

- 11 - CLC/TS 50607:2013
Table 1 — Timing for unidirectional communication
Time period Minimum Maximum Description
duration duration
[ms] [ms]
T1+T2 22 Rise Time and Setup Time
T2 2  Setup time
T3 54 67,5 13,5 ms per byte
T4 2  Wait time after end of DiSEqC
message (T3)
T4+T5 40 Fall time and Wait Time
T1 up to T5 129,5
Channelchange 70/71 xx xx xx (xx)(54ms-67,5ms)
Low DC
T1 T2 T3 T4 T5
Figure 6 — Signal sent by the receiver for uni-directional communication
In Clause 7, the channel-change commands (70/71 in Figure 6) are described in detail.
After each uni-directional message, SCIF reply or reply timeout, the voltage shall return to
“LOW_DC” before sending another message (see Figure 6).
TM
For bi-directional communication (DiSEqC level 2.0; based on the DiSEqC Bus Functional
Specification), the
...