SIST EN 50607:2015

SLOVENSKI STANDARD
SIST EN 50607:2015
01-maj-2015
1DGRPHãþD
SIST-TS CLC/TS 50607:2013
Distribucija satelitskih signalov po enojnem koaksialnem kablu - Druga generacija
Satellite signal distribution over a single coaxial cable - Second generation
Verteilen von Satellitensignalen über ein Koaxialkabel - Zweite Generation
Distribution de signaux par satellite sur un seul câble coaxial - Deuxième génération
Ta slovenski standard je istoveten z: EN 50607:2015
ICS:
33.060.40 Kabelski razdelilni sistemi Cabled distribution systems
33.120.10 Koaksialni kabli. Valovodi Coaxial cables. Waveguides
SIST EN 50607:2015 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 50607:2015

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SIST EN 50607:2015


EUROPEAN STANDARD EN 50607

NORME EUROPÉENNE

EUROPÄISCHE NORM
January 2015
ICS 33.060.40 Supersedes CLC/TS 50607:2013
English Version
Satellite signal distribution over a single coaxial cable - Second
generation
Distribution de signaux par satellite sur un seul câble Verteilen von Satellitensignalen über ein Koaxialkabel ¿
coaxial - Deuxième génération Zweite Generation
This European Standard was approved by CENELEC on 2014-10-20. 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 CEN-CENELEC
Management Centre 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 CEN-CENELEC Management Centre has the
same status as the official versions.
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.




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
© 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN 50607:2015 E

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Contents Page
Foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms, definitions and abbreviations . 6
3.1 Terms and definitions . 6
3.2 Abbreviations . 8
3.3 Used commands . 8
4 System architecture . 9
5 SCIF control signals. 12
5.1 DC levels . 12
5.2 Method of the data bit signalling . 14
6 Structure and format of the messages of the 2nd generation single cable distribution system (SCD2)14
6.1 Backwards Compatibility to EN 50494 . 14
6.2 Non-DiSEqC structure . 14
6.3 Uni-directional operation . 15
6.4 Bi-directional operation . 15
7 SCD2 commands . 15
7.1 ODU_Channel_change . 15
7.1.1 Formats . 15
7.1.2 “Special” frequencies . 16
7.2 ODU_Channel_change_PIN . 16
7.3 ODU_UB_avail . 17
7.4 ODU_UB_PIN . 18
7.5 ODU_UB_inuse . 18
7.6 ODU_UB_freq . 19
7.7 ODU_UB_switches . 20
8 Conventions . 21
8.1 UB slots numbering . 21
8.2 Numbering of satellite IF banks . 22
9 Traffic collision management rules . 22
9.1 General . 22
9.2 Automatic detection of SCIF control signal failure . 22
9.3 Pseudo-random repeat . 23
9.3.1 Handling of SCIF control signal . 23
9.3.2 Random delay generation law . 23
Annex A (normative) Implementation rules . 25
A.1 User interface . 25
A.2 Installation impedance . 25
A.3 Signal reflection and return loss in installations . 26
A.4 Power supply of the SCIF . 26
A.5 Remarks concerning power supply . 27
Bibliography . 28

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Foreword
This document (EN 50607:2015) has been prepared by CLC/TC 209 “Cable networks for television signals,
sound signals and interactive services”.
The following dates are fixed:
• latest date by which this document has (dop) 2015-10-20
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2017-10-20
standards conflicting with this
document have to be withdrawn

This document supersedes CLC/TS 50607:2013.
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.

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Introduction
In EN 61319-1:1996, 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 standard 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 standard is downwards compatible to the specifications provided by
EN 50494.

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1 Scope
This European Standard 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 standard.
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.

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 a single coaxial cable in single dwelling installations
EN 60728-1, Cable networks for television signals, sound signals and interactive services – Part 1: System
performance of forward paths (IEC 60728-1)
EN 60728-4, Cable networks for television signals, sound signals and interactive services – Part 4: Passive
wideband equipment for coaxial cable networks (IEC 60728-4)
EN 61319-1:1996, Interconnections of satellite receiving equipment – Part 1: Europe (IEC 61319-1:1995)
IEC 60050-371, International Electrotechnical Vocabulary - Chapter 371: Telecontrol
IEC 60050-721, International Electrotechnical Vocabulary - Chapter 721: Telegraphy, facsimile and data
communication

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TM 1
DiSEqC Bus Functional Specification, Version 4.2, February 25, 1998
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-371, IEC 60050-721,
EN 60728-1 and the following ones 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
command
information used to cause a change of state of operational equipment; could be part of message
[SOURCE: IEC 60050-371:1984, 371-03-01, modified]
3.1.4
committed switch
switch with specified functions (band, polarity, position, option)
3.1.5
demodulator
electronic device transposing the selected channel into the required content
3.1.6
idle mode
operation mode on low DC level
3.1.7
message
group of characters and function control sequences which is transferred as an entity from a transmitter to a
receiver, where the arrangement of the characters is determined at the transmitter
[SOURCE: IEC 60050-721:1991, 721-09-01]
3.1.8
multi dwelling unit
MDU
building with many homes or offices used by single owners where television signals and sound signals are
distributed and with access to interactive services
[SOURCE: IEC 60728-1:2014, 3.1.64, modified]
3.1.9
nibble
half byte

1
Available from http://www.eutelsat.com/satellites/4_5_5.html

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3.1.10
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)
3.1.11
SCIF control signal
signal sent by the demodulator to select the bank and the frequency of the desired channel and to designate
the UB slot allocated to the requesting receiver
3.1.12
single cable interface
SCIF
central unit of a single cable distribution system which selects the desired channels from different banks at
its input ports and allocate them to the designated UB slots at its output port
3.1.13
single dwelling installation
installation for a home or office used by a single owner where television signals and sound signals are
distributed and there is access to interactive services
3.1.14
tuning word
information carried by the command ODU_Channel_change to select the desired channel in the SCIF
3.1.15
uncommitted switch
switch without specified functions
3.1.16
universal architecture
LNB with the following characteristics: operation in the Ku band (10,7 GHz to 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
3.1.17
user band
UB
part of the bandwidth of the shared coaxial cable which is allocated to one receiver connected to the single
coaxial cable distribution system for the reception of the desired channel
3.1.18
user band slot
UB slot
one of N bands in which the total transmission bandwidth is sub-divided
Note 1 to entry: The number of user band slots Nb_ub is a characteristic of the SCIF used.
Note 2 to entry: The system defined in this standard limits the number of UB slots to 32 per output of the SCIF.
3.1.19
wideband architecture
LNB with the following characteristics: operation in the Ku band (10,7 GHz to 12,75 GHz); with only one local
oscillator. Universal-LNB functionality is emulated by the SCIF by adding or subtracting an offset for
frequency conversion according to lowband/highband selection

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3.2 Abbreviations
CSS Channel Stacking System
CW Continuous Wave
DC Direct Current
DiSEqC Digital Satellite Equipment Control
High_DC High level of DC voltage DC
High
IF Intermediate Frequency
LNB Low Noise Blockconverter
Low_DC Low level of DC voltage DC
Low
LSB Least Significant Bit
MDU Multiple Dwelling Unit
MSB Most Significant Bit
Nb_B Number of Banks Nb
B
Nb_ub Number of user bands Nb
ub
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
UB-ID User Band Identifier
3.3 Used commands
ODU_Channel_change Unidirectional command sent by the receiver for tuning to a required channel
ODU_Channel_change_PIN Option for PIN protection of UB in the ODU_Channel_change command
ODU_PowerOFF Unidirectional command sent to SCIF before the receiver turns into standby
ODU_PowerOFF_PIN Unidirectional command to turn-off the PIN protected UB slot
ODU_UB_avail Bidirectional command for requesting information about user bands available
ODU_UB_frequ Bidirectional command for requesting the centre frequency of a specific user
band
ODU_UB_inuse Bidirectional command for requesting information about user bands currently
in use
ODU_UB_PIN Bidirectional command for requesting information about PIN protected user
bands
ODU_UB_switches Bidirectional command for requesting information about the available bank
switches of a specific user band
ODU_UBxSignal_ON Command from a receiver, specified in EN 50494, which causes the SCIF to
switch on CW tones at the centre of all (maximum 8) user bands

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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 standard 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
standard.
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, polarization) 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, Figure 5 and Figure 6 illustrate various examples for implementing the single cable
distribution system (other application scenarios are possible).

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SCIF
inputs
SCIF
output

Figure 2 — General system operation and UB slot frequency mapping
BBanank 1k 1
Power
Power
spsplliitttterer
BBanank 2k 2
RReceieceivverer 11
SCIF
SCIF
BBanank 3k 3
RReceieceivverer 22
BBanank 4k 4
NNuummbbeerr o off bbaannkkss = = N Nbb__BB == 4 4
NNuummbbeerr o off uusseerr s slloottss = = N Nbb__ubub = = 2 2

Figure 3 — Installation example, universal architecture system
with reception of one orbital position (4 Satellite IF banks)
by two receivers (2 UB slots)

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Key
Number of banks Nb_B = 2
Number of user slots Nb_ub = 2
Figure 4 − Installation example, wideband architecture system
with reception of one orbital position (2 Satellite IF banks)
by two receivers (2 UB slots)
BBanank 1k 1
SSaatteellitllitee
AA
BBanank 2k 2
RReceieceivverer 11
Power
Power
BBanank 3k 3
splitter
splitter
Receiver 2
Bank 4 Receiver 2
Bank 4
SSCICIFF
BBanank 5k 5
Satellite
Satellite
BB RReceieceivverer 33
BBanank 6k 6
RReceieceivverer 44
BBanank 7k 7
BBanank 8k 8
Number of banks = Nb_B = 8
Number of banks = Nb_B = 8
NNuummbbeerr o off uusseerr s slloottss = = N Nbb__ubub = = 4 4

Figure 5 — Installation example implementing the reception of two orbital positions
(8 satellite IF banks) by four receivers (4 UB slots)

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Figure 6 — 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 system (see Figure 7). With
TM
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:

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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

Figure 7 — Signal sent by the receiver for uni-directional communication
In Clause 7, the channel-change commands (70/71 in Figure 7) 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 7).
TM
For bi-directional communication (DiSEqC level 2.0; based on the DiSEqC Bus Functional Specification),
the timing shall have the following limits according to Table 2:
Table 2 — Timing for bidirectional communication
Time period Minimum Maximum Description
duration duration
[ms] [ms]
T1+T2  22 Rise Time and Setup Time
T2 2
T3 13,5 27 13,5 ms per byte
T4 15 25 Return to Low DC after Timeout of
50 ms (receiver)
T5 40,5 67,5 13,5 ms per byte
T6 2  Wait Time after DiSEqC message (T5)
T6+T7  40 Wait Time and Fall Time
T1 up to T7  181,5

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NOTE Maximum 4 Data Bytes due to 32 UB slots in reply.
Figure 8 — Signal sent by the receiver for bi-directional communication
In Clause 7, the Config and Reply commands (7A-7E and 74xx… in Figure 8) are described in detail. The
TM
hardware of the communication bus shall be realized according to the DiSEqC Bus Functional
Specification. Some additional care shall be taken to ensure an appropriate impedance of the installation
during the SCIF control signals. In Annex A, some implementation rules are given.
5.2 Method of the data bit signalling
DiSEqC uses base-band timings of 500 µs (±100 µs) for a one-third-bit PWK coded signal on a nominal
TM
22 kHz (± 4 kHz) carrier according to the DiSEqC Bus Functional Specification. Figure 9 shows the 22 kHz
time envelope for each bit transmitted, with nominally 22 cycles for a bit “0” and 11 cycles for a bit “1”.

Figure 9 — Bit signalling according to DiSEqC format
6 Structure and format of the messages of the 2nd generation single cable
distribution system (SCD2)
6.1 Backwards Compatibility to EN 50494
For compatibility reasons all SCIF devices supporting SCD2 shall also include the corresponding
functionality of EN 50494.
6.2 Non-DiSEqC structure
SCD2 uses DiSEqC physical layer, but a non-DiSEqC message structure optimised for single cable
operation.
FRAMING: the framing is reduced to the first four bits (7 to 4) of the first byte. The value is “7 h”. Commands
with this framing will be ignored by known DiSEqC slaves.
ADDRESS: as remote tuning systems only have one slave there is no addressing of multiple devices
required, and therefore the DiSEqC address scheme is not used.

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COMMAND: the commands are already transmitted in the lower nibble of the first byte (.3 to 0,0).
The length of the complete message can vary between one byte only and eight bytes.
6.3 Uni-directional operation
Uni-directional operation is used for regular tuning commands such as “70 h” and “71 h”. Voltage levels and
timings are defined in Figure 7.
6.4 Bi-directional operation
Bi-directional operation may be used for receiver installation purposes. Voltage levels and timings are
defined in Figure 8. To use bi-directional communication, hardware according to DiSEqC level 2.0 in the
TM
DiSEqC Bus Functional Specification shall be used (see A.2). Receivers shall send the request on the
“HIGH_DC” and hold this high DC level until either the reply was received or 50ms after the request have
passed (timeout condition). In case of improper reply, the receiver may send the request up to five times
using the repeat mechanism described in Clause 9.
Support of bidirectional operation is optional for the receiver and mandatory for the SCIF.
7 SCD2 commands
7.1 ODU_Channel_change
7.1.1 Formats
The receiver uses this uni-directional command when tuning to a (new) channel is required. Timing is
described in Figure 7.
ODU_Channel_change format:
70h Data 1 Data 2 Data 3
Data 1 format:
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
UB [4:0] T [10:8]
Data 2 format:
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
T [7:0]
Data 3 format:
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
“Uncommitted switches” ”Committed switches”
▪ UB [4:0] bits select the UB slot on which the desired signal is expected (Userband-ID).
▪ “Uncommitted switches” is extended satellite selection known from DiSEqC 1.1. Lower data nibble of
DiSEqC command “39h” can be mapped in here (“uncommitted switch 1” is Bit 4).
▪ “Committed switches” is the band (.0), polarity (.1), position (.2) and option (.3) bits known from
DiSEqC 1.0. Lower data nibble of DiSEqC command “38h” can be mapped in here (“band” is LSB).
▪ The T[.] word is the tuning word calculated by the receiver as follows:

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T = F – 100
IF
where
T is the decimal value of the tuning word T[.]. (see above);
F is the IF frequency in MHz (where the tuner would tune to when connected directly);
IF
100 is the constant value used to compress the T[.] word.
7.1.2 “Special” frequencies
Some frequencies are defined as contro
...