1、BRITISH STANDARD BS 4727-3: Group 12:1991 IEC 50(701): 1988 Glossary of Electrotechnical, power, telecommunication, electronics, lighting and colour terms Part 3: Terms particular to telecommunications and electronics Group 12: Telecommunications, channels and networksBS4727-3:Group 12:1991 This Bri
2、tish Standard, having been prepared under the directionof the General Electrotechnical Standards PolicyCommittee, was publishedunder the authority ofthe Standards Board and comesinto effect on 20December1991 BSI 10-1999 The following BSI references relate to the work on this standard: Committee refe
3、rence GEL/1 Draft announced in BSI News September 1991 ISBN 0 580 20319 0 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the General Electrotechnical Standards Policy Committee (GEL/-) to Technical Committee GEL/1, upon which the following
4、bodies were represented: Association of Consulting Engineers British Broadcasting Corporation Department of Trade and Industry (Radiocommunications Division) EEA (the Association of Electronics, Telecommunications and Business Equipment Industries) Electricity Supply Industry in United Kingdom Insti
5、tute of Physics Institution of Electrical Engineers Amendments issued since publication Amd. No. Date CommentsBS4727-3:Group 12:1991 BSI 10-1999 i Contents Page Committees responsible Inside front cover National foreword ii Guide to the glossary iv 701-01 Forms of telecommunications 1 701-02 Channel
6、s, circuits and networks 16 701-03 Use and operation of circuits and networks 22 Index 31BS4727-3:Group 12:1991 ii BSI 10-1999 National foreword This Group of BS 4727-3 has been prepared under the direction of the General Electrotechnical Standards Policy Committee and is identical with IEC50(701):1
7、990 “International Electrotechnical Vocabulary Chapter 701: Telecommunications, channels and networks”, published by the International Electrotechnical Commission (IEC). For ease of production purposes the definitions given in French, Russian and Spanish have been retained, together with the transla
8、tion of the terms (but not the definitions) given in German, Italian, Dutch, Polish and Swedish. The glossary is divided into five Parts, each of which is subdivided into Groups. Each Group will comprise the terms and definitions used in a particular branch of electrical engineering and will be issu
9、ed individually as soon as it is completed. This arrangement makes it possible to add new Groups or review existing Groups at any time without affecting the remainder of the glossary. The five Parts of the glossary are as follows. Part 1: Terms common to power, telecommunications and electronics; Pa
10、rt 2: Terms particular to power engineering; Part 3: Terms particular to telecommunications and electronics; Part 4: Terms particular to lighting and colour; Part 5: Terms particular to electromedical equipment. Fundamental and general terms common to power, telecommunications and electronics form G
11、roups 01 and 02 of Part 1. Group 01 of Part 3 contains general terms. The specialist Groups (e.g. Groups 03 to 13 of Part 1) contain only the terms and definitions relating to their subject. As far as has been practicable all terms and definitions established in current usage and falling within the
12、scope of this glossary have been included. Experience has shown that is is rarely possible to replace, or even to modify, a well established term no matter what the logical or aesthetic shortcomings of that term may be. Current usage has therefore been accepted as the authority for terms and their m
13、eaning except where there has been a very good reason for doing otherwise, e.g. where terms have been considered to be fundamentally wrong, ambiguous, superfluous or in need of standardization. Where two or more synonymous terms are in use, those which are deprecated are omitted from the body of the
14、 text but are entered in the alphabetical index with a cross-reference to the standard term. In cases where it was felt that the time was not yet right to deprecate a synonym, preferred terms are given first and the other terms are printed in less prominent type to indicate the intention to deprecat
15、e them in the course of time. Where synonyms are considered of equal value they are shown in the same type. Where terms are used with different meanings in different branches of electrical engineering, appropriate definitions are given in the Groups of the glossary corresponding to these branches. S
16、uch a definition, when taken out of the context of its Group, should if possible be quoted with a preamble indicating its proper context. It is to be noted that the given definition of a term represents the generally accepted meaning of that term. Under no circumstances should it be regarded as taki
17、ng the place of a specification. As far as possible the terms are arranged in a logical order proceeding from the general to the specific and from the whole to the part, and allied terms are placed close together. In earlier editions of BS 4727, a special national numbering system was used, however,
18、 to facilitate publication of future editions of BS 4727, only the International Electrotechnical Vocabulary numbering system is used.BS4727-3:Group 12:1991 BSI 10-1999 iii A general view of the position of the Group in the glossary can be obtained from the guide to the glossary. An alphabetical ind
19、ex of the terms of each Group is provided at the end of each Group to facilitate reference to particular terms. It is recommended that the user of any Group of the glossary should consider the Group in association with the Groups covering general or fundamental terms within the Part and with Groups
20、01 and 02 of Part 1. In this glossary parentheses ( ) enclose words or phrases that are not part of the term or definition and can be omitted without affecting the meaning. Square brackets enclose words which may replace a preceding part of an expression. A British Standard does not purport to inclu
21、de all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi
22、 tov, pages1to45 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.BS4727-3:Group 12:1991 iv BSI 10-1999 Guide to the glossary Part 1 Terms common to power, telecommu
23、nications and electronics Group 01 Fundamental terminology Group 02 Electrical and magnetic devices terminology Group 03 Relay terminology Group 04 Measurement terminology Group 05 Semiconductor terminology Group 06 Electronic tube terminology Group 07 Magnetic materials and components Group 08 Piez
24、o-electric device terminology Group 09 Electromagnetic compatibility Group 10 Insulating solids, liquids and gases Group 11 Printed circuits Group 12 Insulators Group 13 Electromechanical components for electronic equipment Titles to any further Groups will be added in due course. Part 2 Terms parti
25、cular to power engineering Group 01 General power terminology (withdrawn) Group 02 Power electronics terminology Group 03 Rotating machinery terminology Group 04 Power transformers and reactors Group 05 Voltage fluctuation terminology Group 06 Switchgear and controlgear terminology (including fuse t
26、erminology) Group 07 Tariffs terminology Group 08 Electric cable terminology Group 09 Transducer terminology Group 10 Industrial electroheating terminology Group 11 Generation, transmission and distribution of electricity terminology Group 12 Telecontrol terminology Group 13 Electrical apparatus for
27、 explosive atmospheres Group 14 Power capacitors Group 15 Overhead lines Group 16 Instrument transformers Titles to any further Groups will be added in due course. Part 3 Terms particular to telecommunications and electronics Group 01 General telecommunication and electronics terminology Group 02 Te
28、lephony terminology Group 03 Telegraphy, including facsimile, terminology Group 04 Broadcasting, radio and television terminology Group 05 Propagation and media terminology Group 06 Radio location and navigation terminology Group 07 Radiocommunication terminology Group 08 Acoustics and electro-acous
29、tics terminology Group 09 Transmission lines and waveguidesBS4727-3:Group 12:1991 BSI 10-1999 v Group 10 Recording and reproduction of sound and video terminology Group 11 Space radiocommunications terminology Group 12 Telecommunications, channels and networks Titles to any further Groups will be ad
30、ded in due course. Part 4 Terms particular to lighting and colour (withdrawn) Part 5 Terms particular to electromedical equipment Group 01 Radiology and radiological physics terminology Titles to any further Groups will be added in due course.BS4727-3:Group 12:1991 1 BSI 10-1999BS4727-3:Group 12:199
31、1 BSI 10-1999 2BS4727-3:Group 12:1991 3 BSI 10-1999BS4727-3:Group 12:1991 BSI 10-1999 4BS4727-3:Group 12:1991 5 BSI 10-1999BS4727-3:Group 12:1991 BSI 10-1999 6BS4727-3:Group 12:1991 7 BSI 10-1999BS4727-3:Group 12:1991 BSI 10-1999 8BS4727-3:Group 12:1991 9 BSI 10-1999BS4727-3:Group 12:1991 BSI 10-199
32、9 10BS4727-3:Group 12:1991 11 BSI 10-1999BS4727-3:Group 12:1991 BSI 10-1999 12BS4727-3:Group 12:1991 13 BSI 10-1999BS4727-3:Group 12:1991 BSI 10-1999 14BS4727-3:Group 12:1991 15 BSI 10-1999BS4727-3:Group 12:1991 BSI 10-1999 16BS4727-3:Group 12:1991 17 BSI 10-1999BS4727-3:Group 12:1991 BSI 10-1999 18
33、BS4727-3:Group 12:1991 19 BSI 10-1999BS4727-3:Group 12:1991 BSI 10-1999 20BS4727-3:Group 12:1991 21 BSI 10-1999BS4727-3:Group 12:1991 BSI 10-1999 22BS4727-3:Group 12:1991 23 BSI 10-1999BS4727-3:Group 12:1991 BSI 10-1999 24BS4727-3:Group 12:1991 25 BSI 10-1999BS4727-3:Group 12:1991 BSI 10-1999 26BS47
34、27-3:Group 12:1991 27 BSI 10-1999BS4727-3:Group 12:1991 BSI 10-1999 28BS4727-3:Group 12:1991 29 BSI 10-1999BS4727-3:Group 12:1991 BSI 10-1999 30BS4727-3:Group 12:1991 31 BSI 10-1999BS4727-3:Group 12:1991 BSI 10-1999 32BS4727-3:Group 12:1991 33 BSI 10-1999BS4727-3:Group 12:1991 BSI 10-1999 34BS4727-3
35、:Group 12:1991 35 BSI 10-1999BS4727-3:Group 12:1991 BSI 10-1999 36BS4727-3:Group 12:1991 37 BSI 10-1999BS4727-3:Group 12:1991 BSI 10-1999 38BS4727-3:Group 12:1991 39 BSI 10-1999BS4727-3:Group 12:1991 BSI 10-1999 40BS4727-3:Group 12:1991 41 BSI 10-1999BS4727-3:Group 12:1991 BSI 10-1999 42BS4727-3:Gro
36、up 12:1991 43 BSI 10-1999BS4727-3:Group 12:1991 BSI 10-1999 44BS4727-3:Group 12:1991 45 BSI 10-199946 blankBS 4727-3: Group 12:1991 IEC 50(701): 1988 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandard
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