BS EN 60118-14-1998 Hearing aids - Specification of a digital interface device《助听器 数字接口装置规范》.pdf

1、BRITISH STANDARD BS EN 60118-14:1998 IEC 60118-14:1998 Hearing aids Part 14: Specification of a digital interface device The European Standard EN 60118-14:1998 has the status of a British Standard ICS 17.140.50BSEN60118-14:1998 This British Standard, having been prepared under the directionof the El

2、ectrotechnical Sector Board, was published underthe authority of the Standards Board and comes intoeffect on 15 June 1998 BSI 04-1999 ISBN 0 580 29931 7 National foreword This British Standard is the English language version of EN 60118-14:1998. It is identical with IEC 60118-14:1998. The UK partici

3、pation in its preparation was entrusted to Technical Committee EPL/29, Electroacoustics, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK in

4、terests informed; monitor related international and European developments and promulgate them in the UK. The UK Technical Committee EPL/29 made detailed technical comments on this document as they felt it needed further development and therefore the UK voted against it. A list of organizations repre

5、sented on this committee can be obtained on request to its secretary. From 1 January 1997, all IEC publications have the number 60000 added to the old number. For instance, IEC 27-1 has been renumbered as IEC 60027-1. For a period of time during the change over from one numbering system to the other

6、, publications may contain identifiers from both systems. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to international publications with their corresponding European publications. The British Standards whic

7、h implement these international or European publications may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include al

8、l 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, pages i and

9、 ii, theEN title page, pages 2 to 6, 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 indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date Comment

10、sBSEN60118-14:1998 BSI 04-1999 i Contents Page National foreword Inside front cover Foreword 2 Text of EN 60118-14 3ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 60118-14 April 1998 ICS17.140.50 Descriptors: Acoustics, hearing aids, interfaces, digital technics, control devices, elect

11、rical properties, mechanical properties, adjustment English version Hearing aids Part 14: Specification of a digital interface (IEC 60118-14:1998) Appareils de correction auditive Partie 14: Spcification dinterface numrique (CEI 60118-14:1998) Hrgerte Teil 14: Spezifikation einer digitale Schnittste

12、lle (IEC60118-14:1998) This European Standard was approved by CENELEC on 1998-04-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lis

13、ts and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the r

14、esponsibility 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 electrotechnical committees of Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland,

15、Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B

16、-1050 Brussels 1998 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60118-14:1998 EEN60118-14:1998 BSI 04-1999 2 Foreword The text of document 29/389 + 389A/FDIS, future edition 1 of IEC60118-14, prepared by IEC TC 29, Electroacoust

17、ics, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN60118-14 on 1998-04-01. The following dates were fixed: Annexes designated “normative” are part of the body of the standard. In this standard, Annex ZA is normative. Annex ZA has been added by CENELEC. Endorsement n

18、otice The text of the International Standard IEC60118-14:1998 was approved by CENELEC as a European Standard without any modification. Contents Page Foreword 2 Introduction 3 1 Scope 3 2 Normative references 3 3 Definitions 3 4 Symbols and abbreviations 4 5 Physical specifications of the interface 4

19、 Annex ZA (normative) Normative references to international publications with their corresponding European publications Inside back cover latest date by which the ENhas to be implemented at national level by publication of an identical national standard or by endorsement (dop) 1999-01-01 latest date

20、 by which the national standards conflicting with the EN have to be withdrawn (dow) 2001-01-01EN60118-14:1998 BSI 04-1999 3 Introduction This part of IEC60118 has been prepared to define the electrical and mechanical characteristics of the interface (the signals and connectors) to be used for the el

21、ectrical setting of hearing aid parameters. This standard was motivated by a desire to avoid the problem of incompatibility between the hearing aids and the parameter setting devices produced by different manufacturers. The standard assumes a general configuration for the electrical setting of param

22、eters which consist of a general-purpose control device, such as a desktop computer; a hearing aid with electrical control of parameter values; an interface to connect the computer to the hearing aid. This standard only specifies the requirements for the interface between the control device and the

23、hearing aid. 1 Scope This part of IEC60118 specifies the electrical and mechanical requirements for an interface device to allow a general-purpose control device such as a desktop computer to be connected to hearing aids, for the purpose of electrical setting of their operating parameters. There is

24、no specification of anything within the hearing aid, such as types of parameters and their signal processing characteristics, nor is there any specification of the parameter setting procedure the method used to determine which settings are most appropriate to the person wearing the hearing aid. This

25、 standard is restricted to the digital interface between the control device and the hearing aid. This standard provides a specification such that all hearing aids which can be programmed by the specified digital interface may have their parameters set by a single control device and interface device.

26、 The specifications of this standard are for use in connection with hearing aids with parameters set by a direct electrical connection using a cable. They do not cover hearing aids with parameters controlled by radio frequency or infrared transmission, or any other “wireless” method of control. 2 No

27、rmative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of IEC60118. At the time of publication, the editions indicated were valid. All normative documents are subject to revision, and parties to agreements bas

28、ed on this part of IEC60118 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. Members of IEC and ISO maintain registers of currently valid normative documents. IEC60601-1-1:1992, Medical electrical equipment Part 1: General

29、 requirements for safety Section 1: Collateral standard: Safety requirements for medical electrical systems. IEC60118-12:1996, Hearing aids Part12:Dimensions of electrical connector systems. IEC61076-4-105:1995, Connectors with assessed quality for use in d.c., low-frequency analogue and in digital

30、high-speed data applications Part4:Printed board connectors Section105:Detail specification for 9 mm circular connector with 3 to 8 contacts for use in a wide range of applications including the telecommunication and audio industry. ITU-T Recommendation V.24:1996, List of definitions for interchange

31、 circuits between data terminal equipment (DTE) and data circuit-terminating equipment (DCE). 3 Definitions For the purpose of this part of IEC60118, the following definitions apply. 3.1 digital interface device device for exchanging signals between a hearing aid and a control device for the electri

32、cal setting of operating parameters 3.2 control device desktop computer or other programmable device which carries out the procedure for setting the parameters of a hearing aid. The control device is connected to the digital interface device by a serial interface. 3.3 hearing aid device worn by a pe

33、rson to aid auditory function. Within this standard, the only relevant hearing aids are those which have electrically programmable controls and therefore require setting using a digital interface device and control device.EN60118-14:1998 4 BSI 04-1999 3.4 serial interface method of sending electroni

34、c signals using pulses down a single wire or a pair of wires. A standard serial interface is defined by ITU-T V.24. 3.5 input data transmitted from the hearing aid to the digital interface device 3.6 output data transmitted from the digital interface device to the hearing aid 4 Symbols and abbreviat

35、ions 5 Physical specifications of the interface 5.1 General The digital interface device may be physically and electrically separate from the control device. If the device is not physically separate, but constructed as a part of the control device, it shall still be constructed so as to meet the req

36、uirements for patient safety given in 5.2. The digital interface device shall be connected to the hearing aid using a cable with connectors at both ends. It is recommended that the digital interface device provide two independent connectors, to provide for binaural fitting. 5.2 Patient safety The di

37、gital interface device shall comply with IEC60601-1-1, type BF. When the digital interface device is integrated with the control device, the entire system shall comply with IEC60601-1-1, type BF. 5.3 Connection to the control device If the digital interface device is physically and electrically sepa

38、rate, it shall be controlled by a serial connection between the device and the control device, according to ITU-T V.24. The digital interface device shall conform to the specification within the referenced ITU-T V.24 recommendation for a data terminal equipment device. These specifications govern bo

39、th electrical and mechanical requirements. If the digital interface device is constructed as a part of the control device, this standard makes no specification for the interconnection between the interface device and the control device. If the digital interface device is constructed as a physically

40、separate entity, the connector for the cable to the control device may vary from the mechanical requirements of ITU-T V.24, provided that a) the minimum electrical requirements are met (two data lines plus earth, conventionally referred to as TX (transmit), RX (receive) and E); b) the physical conne

41、ctions are fully documented; c) a convertor for use of a standard ITU-T V.24 cable is readily available, either in the general market or from the interface device manufacturer. 5.4 Connection to the hearing aid The specifications of the connection of the digital interface device to the hearing aid i

42、s given in the following subclauses. These specifications apply to each of the two connectors that are recommended to support binaural hearing aid fitting. 5.4.1 Mechanical specifications 5.4.1.1 General The digital interface device shall connect to a hearing aid by a cable. The cable connection at

43、the digital interface device is a six-terminal shielded connector according to IEC61076-4-105. The cable connection at the hearing aid shall be determined by the hearing aid manufacturer. IEC60118-12 describes suitable connectors. 5.4.1.2 Terminal assignment Because of the wide range of potential re

44、quirements of various types of electronic technologies and various hearing aid designs, there are multiple ways of using several of the lines. The digital interface device shall provide a) four different voltage sources for supply purposes, data output and common ground; U bat Fixed supply voltage U

45、 o Variable data output voltage U prog Variable programming voltage U supply Variable supply voltage G Common groundEN60118-14:1998 BSI 04-1999 5 b) a data input sense facility for receiving data; c) a multiplexing system that allows different combinations of supply data input and data output to be

46、assigned to the six terminals at the device. Terminals 1, 2 and 5 are those permanently assigned to fixed supply voltages (U bat ), common ground (G) and variable supply voltages (U supply ), respectively. The following subclauses specify the capabilities of each terminal. 5.4.2 Electrical specifica

47、tions 5.4.2.1 Fixed supply voltage U bat(terminal 1) This function is the hearing aid supply voltage, the substitute for a battery. The voltage shall always be available at terminal 1. The current limiting shall be selectable by the control device. 5.4.2.2 Common ground (G) (terminal 2, optionally t

48、erminal 6) This function is a low impedance ground. It shall always be available at terminal 2. G can also optionally be assigned to terminal 6. 5.4.2.3 Programmable output voltage U o(terminal3, terminal 4 and terminal 6) This voltage source shall be selectable by the control device for terminal 3,

49、 terminal 4 and terminal 6. 5.4.2.4 Programming voltage U prog(selectable by the control device for terminal 4) This voltage source may be used as a programming voltage source, as required by the various memory technologies. 5.4.2.5 Variable supply voltage U supply(terminal 5) A supply voltage shall be available on terminal 5 if enabled by the control device. Its value is set by the control device. 5.4.3 Data transmission 5.4.3.1 General The digital interface device can be set up to transmit and receive data in multiple ways. Vol