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1、BRITISH STANDARD BS EN 60094-5:1994 Implementing Amendment No. 1, not published separately BS 6288-5: 1989 Incorporating Amendments Nos. 1 and 2 IEC 94-5:1988 Incorporating Amendment 1:1996 Magnetic tape sound recording and reproducing systems Part 5: Specification for electrical magnetic tape prope
2、rties The European Standard EN 60094-5:1993 with the incorporation of amendment A1:1996 has the status of a British Standard ICS 33.160.30 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 09:41:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 60094-5:1994 This British Standard, having been
3、prepared under the direction of the Electronic Equipment Standards Policy Committee, was published under the authority of the Board of BSI and comes into effect on 31 July 1989 BSI 12-1998 The following BSI references relate to the work on this standard: Committee reference EEL/22 Draft for comment
4、79/33117 DC ISBN 0 580 17238 4 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Electronic Equipment Standards Policy Committee (EEL/-) to Technical Committee EEL/22, upon which the following bodies were represented: British Broadcasting
5、Corporation British Kinematograph, Sound and Television Society Council for Educational Technology for the United Kingdom Electronic Engineering Association Independent Television Association Sound and Communication Industries Federation The following bodies were also represented in the drafting of
6、the standard, through subcommittees and panels: Association of Professional Recording Studios Audio Engineering Society British Tape Industry Association Royal Photographic Society Amendments issued since publication Amd. No.Date of issueComments 6407September 1991 8126March 1994 9292February 1997In
7、dicated by a sideline in the margin Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 09:41:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 60094-5:1994 BSI 12-1998i Contents Page Committees responsibleInside front cover National forewordii Foreword2 Text of EN 60094-55 List of referencesIn
8、side back cover Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 09:41:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 60094-5:1994 ii BSI 12-1998 National foreword This British Standard has been prepared by Subcommittee EPL/100/2 (formerly EEL/22) and is the English language version of EN
9、 60094-5:1993 Magnetic tape sound recording and reproducing systems. Part 5 Electrical magnetic tape properties including amendment A1:1996, published by the European Committee for Electrotechnical Standardization (CENELEC). It is identical with IEC 94-5:1988 including Amendment 1:1996, published by
10、 the International Electrotechnical Commission (IEC). Agreement has been given to retain the cross-reference of this standard as Part 5 of the BS 6288 series for ease of reference in relation to other Parts of the series. Reference to page numbers in the text relate to the IEC page numbers given in
11、brackets at the bottom of each page. BS 6288 consists currently of the following Parts: Part 1 (BS EN 60094-1): Specification for general conditions and requirements; Part 2 (BS EN 60094-2): Calibration tapes; Part 3 (BS EN 60094-3): Methods of measuring the characteristics of recording equipment fo
12、r sound on magnetic tape; Part 4 (BS EN 60094-4): Mechanical magnetic tape properties; Part 5 (BS EN 60094-5): Electrical magnetic tape properties; Part 6: Specification for reel-to-reel systems; Part 7 (BS EN 60094-7): Specification for cassettes for commercial tape records and domestic use; Part 8
13、: Specification for eight track magnetic tape cartridge for commercial tape records and domestic use; Part 9: Specification for magnetic tape cartridge for professional use; Part 10: Specification for time and address codes; Part 11: Guide to and address code for compact cassettes. Cross-references
14、Publication referred to Corresponding British Standard EN 60094BS EN 60094 Magnetic tape sound recording and reproducing systems EN 60094-1:1993BS EN 60094-1:1994 (BS 6288-1:1994) (IEC 94-1:1981)Specification for general conditions and requirements EN 60094-2:1995aBS EN 60094-2 (BS 6288-2:1995) Cali
15、bration tapes (IEC 94-2:1994) EN 60094-7:1993BS EN 60094-7:1994 (BS 6288-7:1994) (IEC 94-7:1986)Specification for cassettes for commercial tape records and domestic use EN 60651:1994BS EN 60651:1994 Specification for sound level meters (IEC 651:1979) HD 311.6 S1:1986BS 6288 Magnetic tape sound recor
16、ding and reproducing systems (IEC 94-6:1985)Part 6:1987 Specification for reel-to-reel systems IEC 50 (806):1975BS 4727 Glossary of electrotechnical, power, telecommunication, electronics, lighting and colour terms Part 3 Terms particular to telecommunications and electronics Group 10:1979 Recording
17、 and reproduction of sound and video terminology Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 09:41:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 60094-5:1994 BSI 12-1998iii A British Standard does not purport to include all the necessary provisions of a contract. Users of British St
18、andards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. IEC 386:1972BS 4847:1989 Method of measurement of speed fluctuations in sound recording and reproducing equipment a EN 60094-2:1993 has been superseded
19、 by EN 60094-2:1995. Summary of pages This document comprises a front cover, an inside front cover, pages i to iv, the EN title page, pages 2 to 30, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indic
20、ated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 09:41:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 30 blank Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 09:41:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORM
21、E EUROPENNE EUROPISCHE NORM EN 60094-5 October 1993 + A1 March 1996 UDC 621.396.7:681.8Supersedes HD 311.5 S1:1989 Descriptors: Sound recording, magnetic tape, electrical property English version Magnetic tape sound recording and reproducing systems Part 5: Electrical magnetic tape properties (inclu
22、des amendment A1:1996) (IEC 94-5:1988 + A1:1996) Systmes denregistrement et de lecture du son sur bandes magntiques Cinquime partie: Proprits lectriques des bandes magntiques (inclut lamendement A1:1996) (CEI 94-5:1988 + A1:1996) Systeme fr Tonaufzeichnung und -wiedergabe auf Magnetband Teil 5: Elek
23、trische Eigenschaften von Magnetbndern (enthlt nderung A1:1996) (IEC 94-5:1988 + A1:1996) This European Standard was approved by CENELEC on 1993-09-22; amendment A1 was approved by CENELEC on 1996-03-05. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate th
24、e 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 Central Secretariat or to any CENELEC member. This European Standard exist
25、s 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 Central Secretariat has the same status as the official versions. CENELEC members are the national electr
26、otechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Elec
27、trotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1993 Copyright reserved to CENELEC members Ref. No. EN 60094-5:1993 + A1:1996 E Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 09:41:15 GMT+00:00 2006, Uncontrolled Copy, (c
28、) BSI EN 60094-5:1993 BSI 12-1998 2 Foreword As a consequence of the IEC-CENELEC Agreement, HD 311.5 S1:1989 (IEC 94-5:1988) was submitted to the CENELEC voting procedure for conversion into a European Standard. The text of the International Standard was approved by CENELEC as EN 60094-5 on 22 Septe
29、mber 1993. The following dates were fixed: Annexes designated “normative” are part of the body of the standard. In this standard, Annex ZA is normative. Foreword to amendment A1 The text of document 60A/178/FDIS, future amendment 1 to IEC 94-5:1988, prepared by SC 60A (transformed into SC 100B, Reco
30、rding, of IEC TC 100, Audio, video and multimedia systems and equipment), was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as amendment A1 to EN 60094-5:1993 on 1996-03-05. The following dates were fixed: Contents Page Foreword2 Section 1. General 1.1Scope5 1.2Object5 Secti
31、on 2. Technical requirements and information concerning testing conditions 2.1Standard atmospheric conditions5 2.2Mechanical characteristics of tape transports5 2.3Electrical characteristics of test equipment6 2.4Calibration tape7 2.5Reference tape7 2.6Bias8 2.6.1 Reference bias9 2.6.2 Conventional
32、test bias9 Section 3. Parameters to be measured 3.1Bias ratio11 3.2Maximum output level11 3.3Relative tape sensitivity14 3.4Reference level to bias noise ratio14 3.5Signal to bias noise ratio15 3.6Reference level to d.c. noise ratio15 3.7Reference level to print ratio16 3.8Erasing attenuation17 3.9U
33、niformity variations18 3.10 Drop-out annoyance18 Section 4. Information to be supplied by the magnetic tape manufacturer 4.1Recommended form for published data21 Appendix A Equipment noise correction25 Appendix B Measuring means 26 Appendix C Intermodulation distortion measuring equipment28 Annex ZA
34、 (normative) Other international publications quoted in this standard with the references of the relevant European publications29 Figure 1 Output signal spectrum12 Figure 2 Input signal spectrum12 Figure 3 Output signal spectrum13 Figure 4 Characteristics of high-pass filter for d.c. noise measureme
35、nt16 Figure 5 Circuit for d.c. noise measurement16 Figure 6 19 Figure A1 Subtracting noise powers25 latest date of publication of an identical national standard (dop) 1994-10-01 latest date of withdrawal of conflicting national standards(dow) latest date by which the amendment has to be implemented
36、at national level by publication of an identical national standard or by endorsement (dop) 1996-12-01 latest date by which the national standards conflicting with the amendment have to be withdrawn (dow) 1996-12-01 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 09:41:15 GMT+00:00 2006, Uncon
37、trolled Copy, (c) BSI EN 60094-5:1993 BSI 12-19983 Page Table I Rated tape speeds5 Table II Type of head6 Table III IEC primary reference tapes8 Table IV Table of maximum output levels specified for domestic IEC primary reference tapes10 Table V21 Table VI Recommended parameters to be quoted in publ
38、ished data for professional tapes 6.30 mm wide22 Table VII Recommended parameters to be quoted in published data for domestic tape and unrecorded tape used for commercial tape records (6.30 mm wide)23 Table VIII Recommended parameters to be quoted in published data for domestic tape and unrecorded t
39、ape used for commercial tape records (3.81 mm wide)24 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 09:41:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 blank Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 09:41:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 60094-5:1993 BSI 12-1
40、9985 Section 1. General 1.1 Scope This standard applies to non-perforated magnetic tape used for professional and domestic analogue sound recording and reproduction. 1.2 Object The object of this standard is to list and define the characteristics, methods of measurement and equipment necessary to de
41、termine the electrical properties of magnetic tapes. It will also enable users of magnetic tapes to compare the technical product data of different manufacturers, produced in accordance with this standard. Section 2. Technical requirements and information concerning testing conditions 2.1 Standard a
42、tmospheric conditions Where necessary the tests shall be preceded by a period of conditioning to ensure that the test specimen has reached equilibrium with the environment. 2.2 Mechanical characteristics of tape transports a) Tape speed The tape transports shall be capable of operating at the mandat
43、ory rated tape speed specified in Table I. Table I Rated tape speeds Other tape speeds may be required when additional optional information is given. The tape speed fluctuations (wow and flutter) shall be not more than 0.15 % when measured in accordance with IEC Publication 386. b) Tape widths Tape
44、transports shall be capable of accommodating tape widths of 6.30 mm and/or 3.81 mm with tolerances as specified in IEC Publication 94-1. In addition tape transports may be used to accommodate the other tape widths and track allocations specified in IEC Publication 94-1 or IEC Publications 94-6 to 94
45、-9. c) Tape guides Tape guides shall be such as to ensure stability of measurement without affecting the inherent characteristics of the tape. d) Tape tensions The tape tensions at the recording and replay heads shall be 1.0 0.4 N for 6.30 mm wide tapes and 0.5 0.2 N for 3.81 mm wide tapes. It is re
46、commended that pressure pads should not be used. e) Heads For details see Table II and Appendix B. Ambient temperature Relative humidity Tape applicationSpeed (cm/s) Professional 6.30 mm wide tapes38.1 0.2% Domestic 6.30 mm wide tapes9.53 0.2% Domestic 3.81 mm wide tapes4.76 0.2% Licensed Copy: shef
47、fieldun sheffieldun, na, Sat Nov 11 09:41:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 60094-5:1993 6 BSI 12-1998 Table II Type of head f) Tape wrap The total angular displacement of the tape around the head. The tape wrap shall be 6 2 (0.105 0.035 rad) around each head. The heads shall be set o
48、r adjustments provided so that: i) the face of the head contacting the tape is parallel to the corresponding faces of the guides; ii) the head is positioned so that the tape wrap is symmetrical with respect to the gap; iii) the head gap alignment can be set accurately and rigidly. If the tape under
49、test has a coating thickness greater than that of the reference tape being used, the wrap symmetry with respect to the gap shall be adjusted for maximum short wavelength response. 2.3 Electrical characteristics of test equipment a) Reproducing characteristic The reproducing characteristic of the test equipment used shall give a flat frequency response when reproducing the relevant calibration tape specified in IEC Publication 94-2. b) Recording characteristic The recording chain