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SLOVENSKI STANDARD
01-januar-1999
Standardization of interconnections between broadcasting transmitters or
transmitter systems and supervisory equipment - Interface (IEC 60864-1:1986 +
A1:1987)
Standardization of interconnections between broadcasting transmitters or transmitter
systems and supervisory equipment -- Part 1: Interface standards for systems using
dedicated interconnections
Normung der Zusammenschaltung von Rundfunksendern oder Sendersystemen mit
Fernwirkeinrichtungen -- Teil 1: Schnittstellen für Anlagen mit zugeordneten
Verbindungen
Normalisation des interconnexions entre les émetteurs ou les systèmes d'émetteurs de
radiodiffusion et les systèmes de télésurveillance -- Partie 1: Normes d'interface pour les
systèmes à interconnexions câblées
Ta slovenski standard je istoveten z: HD 577 S1:1990
ICS:
33.060.20 Sprejemna in oddajna Receiving and transmitting
oprema equipment
33.200 Daljinsko krmiljenje, daljinske Telecontrol. Telemetering
meritve (telemetrija)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
NORME
CEI
INTERNATIONALE
IEC
60864-1
INTERNATIONAL
Première édition
STAN DARD
First edition
1986-01
Normalisation des interconnexions entre les
émetteurs ou les systèmes d'émetteurs de
radiodiffusion et les systèmes de télésurveillance
Première partie:
Normes d'interface pour les systèmes
à interconnexions câblées
Standardization of interconnections between
broadcasting transmitters or transmitter systems
and supervisory equipment
Part 1:
Interface standards for systems
using dedicated interconnections
© IEC 1986 Droits de reproduction réservés —
Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in
utilisée sous quelque forme que ce soit et par aucun any form or by any means, electronic or mechanical,
procédé, électronique ou mécanique, y compris la photo- including photocopying and microfilm, without permission in
copie et les microfilms, sans l'accord écrit de l'éditeur. writing from the publisher.
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864-1 © - 3 -
IEC 1986
CONTENTS
Page
FOREWORD
PREFACE 5
INTRODUCTION 7
Clause
1. Scope
2. Object
SECTION ONE — GENERAL
3. Terminology
4. General philosophy
5. Interfaces
Command and indication circuits 9
6.
7. Transmitter systems 9
STANDARD BINARY INTERFACE TECHNIQUES
SECTION TWO -
8. Introduction
Relay techniques 11
9.
10. Semiconductor logic techniques
11. Opto-isolator techniques (under consideration)
SECTION THREE — BINARY COMMANDS AND INDICATIONS
12. Introduction
13. Single transmitter facilities
14. Passive reserve system facilities 19
15. Active reserve system facilities 19
16. (N + 1) reserve system facilities
17. Multiplex reserve system facilities
SECTION FOUR — STANDARD ANALOGUE INTERFACE TECHNIQUES
(Under consideration)
SECTION FIVE — ANALOGUE COMMANDS AND INDICATIONS
(Under consideration)
SECTION SIX — GENERAL SYSTEM REQUIREMENTS
22. Introduction 25
23. Standard requirements for all systems 25
FIGURES 27
APPENDIX A - Glossary and definition of terms in common use 38
APPENDIX B - Index of English terms
864-1 © IEC 1986 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
STANDARDIZATION OF INTERCONNECTIONS BETWEEN
BROADCASTING TRANSMITTERS OR TRANSMITTER SYSTEMS
AND SUPERVISORY EQUIPMENT
Part 1: Interface standards for systems using dedicated interconnections
FOREWORD
1)
The formal decisions or agreements of the I E C on technical matters, prepared by Technical Committees on which all the
National Committees having a special interest therein are represented, express, as nearly as possible, an inte
rnational consensus
of opinion on the subjects dealt with.
2)
They have the form of recommendations for inte rnational use and they are accepted by the National Committees in that
sense.
3) In order to promote inte rn
ational unification, the I E C expresses the wish that all National Committees should adopt the text of
the I E C recommendation for their national rules in so far as national conditions will permit. Any divergence between the I E C
recommendation and the corresponding national rules should, as far as possible, be clearly indicated in the latter.
PREFACE
This standard has been prepared by Sub-Committee 12C: Transmitting Equipment, of IEC Tech-
nical Committee No. 12: Radiocommunications.
The text of this standard is based on the following documents:
Six Months' Rule Reports on Voting
12C(CO)163 12C(CO)168
12C(CO)174
12C(CO)181
12C(CO)175 12C(CO)180
12C(CO)177 12C(CO)182
Further information can be found in the relevant Repo
rts on Voting, indicated in the table
above.
— 7 —
864-1©IEC1986
STANDARDIZATION OF INTERCONNECTIONS BETWEEN
BROADCASTING TRANSMITTERS OR TRANSMITTER SYSTEMS
AND SUPERVISORY EQUIPMENT
Part 1: Interface standards for systems using dedicated interconnections
INTRODUCTION
The majority of broadcasting transmitting stations are designed and constructed to operate unat-
tended, that is without personnel being present in the same room as the transmitter. Normally, super-
visory equipment is installed which continuously monitors and sometimes controls the operation of the
transmitters. The supervisory equipment may range from a simple unit which merely extends indica-
tions and controls into an adjacent room, to a highly sophisticated system enabling a large number of
transmitters to be controlled from a common point.
This standard is concerned with the interface between the transmitters and supervisory equipment.
It comprises two parts:
Part 1: Interface standards for systems using dedicated interconnections.
Part 2: Interface standards for systems using data bus type interconnections (under consider-
ation).
It seems appropriate to divide the standard in this way because, although the majority of existing
transmitters employ wired interconnections, the advent of microprocessors and software techniques will
require different interconnection methods, for example, by means of optical fibres.
1. Scope
This standard is applicable to all classes of transmitters for sound and television broadcasting.
The standard may not, however, be appropriate for low power equipment and ce rtain special
purpose transmitters.
Any facilities and interconnections not directly associated with the transmitters, for example
intruder alarms, mast lighting, etc., are excluded from this standard.
2. Object
This standard deals with the interface between a transmitter (or system of transmitters) and the
supervisory equipment which is intended to remotely monitor and/or control the transmitter(s). It
details the interconnections and facilities to be provided with a view to achieving compatibility
between different types and makes of transmitters and supervisory equipment.
SECTION ONE — GENERAL
3. Terminology
To ensure a common understanding of terms used in this standard, a glossary and index have
been included in Appendices A and B. The relationship between some of the most impo rtant terms
is shown in Figure 1, page 27.
864-1 © IEC 1986 9
4. General philosophy
In order to achieve standardization, it is necessary to adopt a general philosophy, the main
concepts of which are as follows:
a) A basic (single) transmitter should contain its own logic to enable it to operate in its own right if
no additional or reserve transmitters are required.
b) Any transmitter system (an example of which is shown in Figure 2, page 29), should comp ri
se
two or more basic transmitters.
c) Control and operation of a system of transmitters should be exercised by means of separate
system logic.
d) The interfaces of both the basic transmitter and the system logic unit need to be standardized in
order to ensure compatibility and interchangeability of equipment.
5.
Interfaces
The interfaces to be standardized are shown in Figure 2. Commands and indications are sent
from and received by the supervisory equipment, via dedicated pairs of wires connected to
dedicated interface terminals or connectors on the transmitter or system logic unit.
It should be noted that this standard relates to the transmitter and system logic interface
terminals and not to the supervisory equipment, although this must, of course, be compatible.
6. Command and indication circuits
The term `command circuit' is used throughout this standard to denote the (dedicated) circuit
required to send each command to the transmitter. Similarly, the term `indication circuit' is used
to denote the circuit by means of which each indication is sent from the transmitter.
7. Transmitter systems
A wide variety of transmitter systems may be devised using the approach referred to in Clause 4.
Transmitter systems in common use are :
– single transmitter (in the case of television, comprising a vision and sound transmitter operating
together);
– passive reserve system;
– active reserve system;
–
(N + 1) reserve system;
–
multiplex reserve system.
Examples of such systems are shown in Figure 3, page 31. Many minor va riations of these
systems are possible but the diagram indicates the most impo rtant features of each.
Sections Two to Five below are concerned with the facilities to be provided for each system,
distinguishing between binary and analogue techniques. General requirements relating to all
systems are given in Section Six.
864-1 © IEC 1986 — 11 —
SECTION TWO — STANDARD BINARY INTERFACE TECHNIQUES
8. Introduction
This section deals with the three main techniques in common use in systems employing binary
techniques and dedicated interconnections, viz,
—relays;
—semiconductor logic;
—opto-isolators.
9. Relay techniques
The use of relay techniques is illustrated in Figure 4, page 33. This shows the principle that the
low voltage supply for command circuits is part of the transmitter and similarly, the supply for
indication circuits is part of the system logic unit (or supervisory equipment in the case of a single
transmitter).
The low voltage supply should preferably be connected to the relays via a link external to the
transmitter, as shown in Figure 4. This arrangement facilitates compatibility with different types
of supervisory equipment.
9.1 Commands
Commands are sent to the transmitter by means of contacts located in the supervisory equip-
ment or system logic unit.
The transmitter logic shall be compatible with one or the other of the following two tech-
niques :
1) Continuous closure of the appropriate contact of the supervisory equipment or system logic
unit for the duration of the required state. The opposite state is achieved by opening the contact
and in this case, only a single command circuit is required.
2) Momentary closure of the contact with a duration between 100 ms and 500 ms. In this case, the
opposite command requires an additional command circuit.
Unintentional continuous closure of contacts which are intended for momentary closure shall
not interfere with the normal operation of the transmitters.
9.1.1 Circuit requirements
Command circuit terminals shall be earth-free and arranged so as to allow for either:
—independent pairs, or
—the use of a common return wire.
Command circuit relays shall have a nominal voltage of 24 V and a maximum energizing cur-
rent of 25 mA. It is recommended that the relays should be compatible with semiconductor
logic techniques and opto-isolator techniques in accordance with Clauses 10 and 11.
864-1 O IEC 1986 – 13 –
9.1.2 Contact requirements
Command circuit contacts shall be floating, i.e. free of all potentials.
The contacts shall be capable of switching at least 25 mA at 24 V d.c.
9.2 Indications
As can be seen in Figure 4, page 33, indications are sent to the supervisory equipment or system
logic unit by means of change-over contacts located in the transmitter.
9.2.1 Contact requirements
Either the normally open or normally closed contacts may be used.
The contacts shall be floating, i.e. free of all potentials, and operate continuously for the duration
of the indicated status.
The contacts shall be capable of switching at least 25 mA at 24 V d.c.
10. Semiconductor logic techniques
The principle of semiconductor logic techniques is illustrated in Figure 5, page 35.
Appropriate precautions shall be taken to prevent misoperation as a result of unwanted voltages
on the interconnections between the transmitter and the supervisory equipment or system logic
unit.
10.1
Commands
Commands are sent to the transmitter by means of semiconductor switching devices or floating
contacts located in the supervisory equipment or system logic unit.
The transmitter logic shall be compatible with one or the other of the following two tech-
niques :
1) Continuous closure of the command circuit by the appropriate switching device in the super-
visory equipment or system logic unit for the duration of the required state. The opposite state
is achieved by opening the circuit and in this case, only a single command circuit is
required.
2)
Momentary closure of the circuit with a duration between 20 ms and 500 ms. In this case, the
opposite command requires an additional command circuit.
Unintentional continuous closure of circuits which are intended for momentary closure shall
not interfere with the normal operation of the transmitters.
10.1.1 Circuit requirements
Command circuits may employ a common return connected to the earthed negative of the
power supply in the transmitter.
The command circuit terminals on the supervisory equipment or system logic unit shall be earth
free.
864-1 © – 15 –
IEC 1986
10.1.2 Signal voltage and signal current levels
The two states of the binary d.c. voltag
...