BS-5704-1979 IEC-60485-1974.pdf
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1、BRITISH STANDARD BS 5704:1979 IEC 485:1974 Incorporating Amendment No. 1 Method for specifying the performance of digital electronic d.c. voltmeters and d.c. electronic analogue-to-digital convertors UDC 621.317.725.024:621.3.037.37 + 681.34.053 Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01
2、 14:20:04 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5704:1979 This British Standard, having been prepared under the direction of the Electronic Equipment Standards Committee, was published under the authority of the Executive Board and comes into effect on 28 February 1979 BSI 09-1999 The follow
3、ing BSI references relate to the work on this standard: Committee reference EEL/8 Draft for comment 73/24053 DC ISBN 0 580 10635 7 Cooperating organizations The Electronic Equipment Standards Committee, under whose direction this British Standard was prepared, consists of representatives from the fo
4、llowing Government departments and scientific and industrial organizations: British Broadcasting Corporation British Electrical and Allied Manufacturers Association (BEAMA) British Radio Equipment Manufacturers Association Cable and Wireless Limited Cable Television Association of Great Britain Elec
5、tricity Supply Industry in England and Wales* Electronic Components Industry Federation* Electronic Engineering Association* Institution of Electronic and Radio Engineers* Ministry of Defence* Post Office* Post Office Engineering Union Scientific Instrument Manufacturers Association* The organizatio
6、ns marked with an asterisk in the above list, together with the following, were directly represented on the committee entrusted with the preparation of this British Standard: British Industrial Measuring and Control Apparatus Manufacturers Association Department of Industry (British Calibration Serv
7、ice) Department of Industry (National Physical Laboratory) Individual experts Amendments issued since publication Amd. No.Date of issueComments 5231June 1988Indicated by a sideline in the margin Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:20:04 GMT+00:00 2006, Uncontrolled Copy, (c) BS
8、I BS 5704:1979 BSI 09-1999i Contents Page Cooperating organizationsInside front cover National forewordii 1General1 1.1Scope1 1.2Object1 2Definitions1 3General requirements for statements on functional performance19 4General requirements for tests20 5Operating error and intrinsic error of apparatus2
9、3 6Influence errors and variations24 7Stability errors25 8Further requirements concerning statements and tests on apparatus26 9Constructional requirements29 10Markings and symbols pertaining to apparatus and accessories29 11Expression of characteristics of digital voltmeters and analogue-to-digital
10、convertors30 12Recommended standard values and ranges of influence quantities36 13Proof of compliance with the recommendation42 Figure 1 Illustration of particular representation methods43 Figure 2 Commutation point44 Figure 3 Example of the components which may be included in the total time45 Figur
11、e 4 Example of the sequence of two subsequent measuring times as well as the reciprocal of the conversion rate45 Figure 5 Illustration of the set of representation units46 Figure 6 Components of the digitalization error47 Figure 7 Reference line48 Figure 8 Differential error of the slope48 Figure 9
12、Deviations from linearity48 Figure 10 Slope over 10 % and slope error over 10 %49 Figure 11 Input configurations50 Table I Examples of output states12 Table II Extract from reference conditions applicable to digital voltmeters and analogue-to-digital convertors22 Table III Extract from rated operati
13、ng conditions applicable to digital voltmeters and analogue-to-digital convertors for Usage Group I23 Table IV Schedule for the determination of stability errors26 Table V Symbols for apparatus29 Publications referred toInside back cover Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:20:0
14、4 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5704:1979 ii BSI 09-1999 National foreword This British Standard is identical with IEC Publication 485 “Digital electronic d.c. voltmeters and d.c. electronic analogue-to-digital convertors” published in 1974 by the International Electrotechnical Commi
15、ssion (IEC). It is published under the direction of the Electronic Equipment Standards Committee. Terminology and conventions. The text of the International Standard has been approved as suitable for publication, without deviation, as a British Standard. Some terminology and certain conventions are
16、not identical with those used in British Standards; attention is especially drawn to the following. Wherever the word “recommendation” appears, referring to this standard, it should be interpreted as “British Standard”. NOTE 1The British Standard is published in a number of Parts which are each iden
17、tical with a Part of the IEC standard. The only reference is in clause 12C which does not refer to any specific test method and therefore closer identification of the corresponding British Standard is not possible. NOTE 2IEC 186 does not, at present, include any method for determination of electroma
18、gnetic radiation. NOTE 3The requirements of the British Standard are less onerous than those of IEC 335-1 and to this extent the description (see note 2 to 12.1.9 of this standard) may be considered as not being equivalent. NOTE 4Textual error. The title to Figure 11 has been omitted in the text. It
19、 should be “Input configurations”. Cross-references International StandardCorresponding British Standard IEC 68BS 2011 Basic environmental testing procedures (see note 1) IEC 144:1963BS 5420:1977 Specification for degrees of protection of enclosures of switchgear and controlgear for voltages up to a
20、nd including 1 000 V a.c. and 1 200 V d.c. (Identical) IEC 186:1969BS 3941:1975 Voltage transformers (Related) (see note 2) IEC 278:1968BS 4308:1978 Documentation to be supplied with electronic measuring apparatus (Identical) IEC 335:BS 3456 Specification for safety of household electrical appliance
21、s Part 1:1970Part 1:1969 General requirements (see note 3) IEC 348:1971BS 4743:1971 Safety requirements of electronic measuring apparatus (Technically equivalent) IEC 359:1971BS 4889:1973 Method For specifying the performance of electronic measuring equipment (Technically equivalent) Licensed Copy:
22、sheffieldun sheffieldun, na, Fri Dec 01 14:20:04 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5704:1979 BSI 09-1999iii Additional information. Attention is drawn to the fact that some of the definitions adopted for the purposes of this standard in clause 2 differ significantly from definitions in B
23、S 5233:1975 “Glossary of terms used in metrology”. BS 5233 draws on the practice of the International Organization of Legal Metrology (OIML), whereas this standard takes account of the definitions of the International Electrotechnical Vocabulary (IEV), the International Federation for Information Pr
24、ocessing and International Computation Centre (IFIP-ICC) Vocabulary and the Vocabulary of Information Processing of the International Organization for Standardization (ISO). Since publication of IEC publication 485, some sections of the latter vocabulary have been published by ISO as separate Sectio
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