IEC 60098:2020 pdf free download Analogue audio disk records and reproducing equipment
This document applies to analogue audio disk records and the corresponding professional anddomestic reproducing equipment. lt excludes amplifiers and loudspeakers，methods ofmeasurement for which can be found in IEC 60268-3, IEC 60268-5，IEC 60268-21 andlEC 60268-221 .
This document specifies the characteristics that are necessary to ensure compatibility betweenanalogue audio disk records and the corresponding reproducing equipment.
lt also lists and defines the most important characteristics affecting the performance ofreproducing equipment, and establishes agreed methods of measurement for thesecharacteristics
2Normative references
The following documents are referred to in the text in such a way that some or all of their contentconstitutes requirements of this document.For dated references,only the edition cited applies.For undated references，the latest edition of the referenced document (including anyamendments) applies.
IEC 60050-806:1996,International Electrotechnical Vocabulary (IEV) – Part 806: Recordingand reproduction of audio and video
IEC 6o050-806:1996/AMD1:2001lEC 60050-806:1996/AMD2:2018
IEC 60263:1982,Scales and sizes for plotting frequency characteristics and polar diagrams
IEC 60386:1972，Method of measurement of speed fluctuations in sound recording andreproducing equipment
IEC 60417，Graphical symbols for use on equipment(available at http:/www.graphical-symbols.infolequipment)
IEC 61672-1:2013，Electroacoustics – Sound level meters – Part 1: Specifications
IEC 62368-1:2018, Audiolvideo, information and communication technology equipment- Part 1:Safety requirements
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-806 and thefollowing apply.
IsO and lEC maintain terminological databases for use in standardization at the followingaddresses:
ISo Online browsing platform: available at https://www.iso.orglobp
• IEC Electropedia: available at http://www.electropedia.org/
3.1
rated value
value of a quantity used for specification purposes, established for a specified set of operating conditions of a component, device, equipment, or system
Note 1 to entry: The rated value is normally the value stated by the manufacturer.
[SOURCE: IEC 60050-1 51 :2001 , 1 51 -1 6-08, modified – Note 1 to entry has been added.]
3.2
terminated, adj
Note 1 to entry: ‘Specified test conditions’ can include open-circuit and short-circuit.
4 General
4.1 Scales for graphical presentation of data 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.
IEC 60098:2020 pdf free download
