BS EN IEC 60098:2020 pdf free.Analogue audio disk records and reproducing equipment.
BS EN IEC 60098 This document applies to analogue audio disk records and the corresponding professional and domestic reproducing equipment. It excludes amplifiers and loudspeakers, methods 0 measurement for which can be found in IEC 60268-3，IEC 60268-5，IEC 60268-21 and IEC 60268-221 .
This document specifies the characteristics that are necessary to ensure compatibility between analogue audio disk records and the corresponding reproducing equipment.It also lists and defines the most important characteristics affecting the performance of reproducing equipment, and establishes agreed methods of measurement for these characteristics.The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies.For undated references， the latest edition of the referenced document (including any amendments) applies.IEC 60050-806:1996, International Electrotechnical Vocabulary (IEV) – Part 806: Recording and reproduction of audio and video IEC 60050-806:1996/AMD1:2001 IEC 60050- 806:1996/AMD2:2018 1EC 60263:1982, Scales and sizes for plotting frequency characteristics and polar diagrams IEC 60386:1972，Method of measurement of speed fluctuations in sound recording and reproducing equipment IEC 60417，Graphical symbols for use on equipment (available at http://www.graphical-symbols.info/equipment) IEC 61672-1:2013, Electroacoustics – Sound level meters – Part 1: Specifications IEC 62368-1:2018, Audio/video, information and communication technology equipment- Part 1:Safety requirements  Linear or logarithmic scales are recommended for graphical presentation. Linear decibel scales are equivalent to logarithmic scales. Other kinds of scale, such as double logarithmic, should be avoided. When using decibel scales, the zero reference should, if possible, be the rated value. In those cases, where each of the scales refers directly to physical units, it is recommended to avoid a combination of linear and logarithmic scales.Where quantities represented by the axes are of the same kind, it is recommended that the same unit length be used for both.Linear scales with remote zero point should be avoided as far as possible. For further
information, see IEC 60263.BS EN IEC 60098 pdf download.