SIST EN IEC 62368-1:2019/A11:2020

SLOVENSKI STANDARD
SIST EN IEC 62368-1:2019/A11:2020
01-julij-2020
Oprema za avdio/video, informacijsko in komunikacijsko tehnologijo - 1. del:
Varnostne zahteve
Audio/video, information and communication technology equipment - Part 1: Safety
requirements

Einrichtungen für Audio/Video-, Informations- und Kommunikationstechnik - Teil 1:

Equipements des technologies de l'audio/vidéo, de l'information et de la communication -

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

Equipements des technologies de l'audio/vidéo, de Einrichtungen für Audio/Video-, Informations- und

l'information et de la communication - Partie 1 : Exigences Kommunikationstechnik - Teil 1: Sicherheitsanforderungen

This amendment A11 modifies the European Standard EN IEC 62368-1:2020; it was approved by CENELEC on 2020-01-06. CENELEC

members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this amendment the

Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC

This amendment exists 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 CEN-CENELEC Management Centre has the same status as

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the

Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

This document (EN IEC 62368-1:2020/A11:2020) has been prepared by CLC/TC 108X "Safety

of electronic equipment within the fields of Audio/Video, Information Technology and

Clauses, subclauses, notes, tables, figures and annexes which are additional to those in

metric for estimating 1 s sound exposure level from the HD 483-1 S2 test signal applied to both

one week rolling estimate of sound exposure expressed in percent of the maximum regarded as

A-weighted sound pressure (p) squared and integrated over a stated period of time, T

levels reported in dBFS are always r.m.s. full scale levels; 0 dBFS, is the level of a dc-free

997 Hz sine wave whose undithered positive peak value is positive digital full scale, leaving the

Note 1 to entry: It is invalid to use dBFS for non-r.m.s. levels. Because the definition of full scale is based on a sine

wave, the level of signals with a crest factor lower than that of a sine wave may exceed 0 dBFS. In particular, square-

Safeguard requirements for protection against long-term exposure to excessive sound pressure

levels from personal music players closely coupled to the ear are specified below. Requirements

for earphones and headphones intended for use with personal music players are also covered.

A personal music player is a portable equipment intended for use by an ordinary person, that:

– is designed to allow the user to listen to audio or audiovisual content / material; and

– uses a listening device, such as headphones or earphones that can be worn in or on or

– has a player that can be body worn (of a size suitable to be carried in a clothing pocket) and

is intended for the user to walk around with while in continuous use (for example, on a street,

EXAMPLES Portable CD players, MP3 audio players, mobile phones with MP3 type features, PDAs or similar

Personal music players shall comply with the requirements of either 10.6.2 or 10.6.3.

NOTE 1 Protection against acoustic energy sources from telecom applications is referenced to ITU-T P.360.

NOTE 2 It is the intention of the Committee to allow the alternative methods for now, but to only use the dose

measurement method as given in 10.6.5 in future. Therefore, manufacturers are encouraged to implement 10.6.5 as

NOTE 3 Professional equipment is equipment sold through special sales channels. All products sold through

• long distance radio receiver (for example, a multiband radio receiver or world band radio

NOTE 4 This exemption has been allowed because this technology is falling out of use and it is expected that

within a few years it will no longer exist. This exemption will not be extended to other technologies.

– a player while connected to an external amplifier that does not allow the user to walk around

For equipment that is clearly designed or intended primarily for use by children, the limits of the

The relevant requirements are given in EN 71-1:2011, 4.20 and the related tests methods and

The amount of non-ionizing radiation is regulated by European Council Recommendation 1999/519/EC of

12 July 1999 on the limitation of exposure of the general public to electromagnetic fields (0 Hz to 300

For intentional radiators, ICNIRP guidelines should be taken into account for Limiting Exposure to Time-

Varying Electric, Magnetic, and Electromagnetic Fields (up to 300 GHz). For hand-held and body-

This standard is transitioning from short-term based (30 s) requirements to long-term based

(40 h) requirements. These clauses remain in effect only for devices that do not comply with

For classifying the acoustic output L , , measurements are based on the A-weighted equivalent

For music where the average sound pressure (long term L , ) measured over the duration of

the song is lower than the average produced by the programme simulation noise, measurements

may be done over the duration of the complete song. In this case, T becomes the duration of the

NOTE Classical music, acoustic music and broadcast typically has an average sound pressure (long term L , )

which is much lower than the average programme simulation noise. Therefore, if the player is capable to analyse the

content and compare it with the programme simulation noise, the warning does not need to be given as long as the

For example, if the player is set with the programme simulation noise to 85 dB, but the average music level of the song

is only 65 dB, there is no need to give a warning or ask an acknowledgement as long as the average sound level of the

– for equipment provided as a package (player with its listening device), and with a proprietary

connector between the player and its listening device, or where the combination of player and

listening device is known by other means such as setting or automatic detection, the L ,

acoustic output shall be ≤ 85 dB when playing the fixed “programme simulation noise”

– for equipment provided with a standardized connector (for example, a 3,5 phone jack) that

allows connection to a listening device for general use, the unweighted r.m.s. output voltage

shall be ≤ 27 mV (analogue interface) or -25 dBFS (digital interface) when playing the fixed

– for equipment provided as a package (player with its listening device), and with a proprietary

connector between the player and its listening device, or when the combination of player and

listening device is known by other means such as setting or automatic detection, the L ,

acoustic output shall be ≤ 100 dB(A) when playing the fixed “programme simulation noise” as

– for equipment provided with a standardized connector (for example, a 3,5 phone jack) that

allows connection to a listening device for general use, the unweighted r.m.s. output voltage

shall be ≤ 150 mV (analogue interface) or -10 dBFS (digital interface) when playing the fixed

Previous limits (10.6.2) created abundant false negative and false positive PMP sound level

warnings. New limits, compliant with The Commission Decision of 23 June 2009, are given

– for equipment provided as a package (player with its listening device), and with a proprietary

connector between the player and its listening device, or where the combination of player and

listening device is known by other means such as setting or automatic detection, the L ,

acoustic output shall be ≤ 80 dB when playing the fixed “programme simulation noise”

– for equipment provided with a standardized connector (for example, a 3,5 phone jack) that

allows connection to a listening device for general use, the unweighted r.m.s. output voltage

shall be ≤ 15 mV (analogue interface) or -30 dBFS (digital interface) when playing the fixed

– for equipment provided as a package (player with its listening device), and with a proprietary

connector between the player and its listening device, or where the combination of player and

listening device is known by other means such as setting or automatic detection, the weekly

sound exposure level, as described in EN 50332-3, shall be ≤ 80 dB when playing the fixed

– for equipment provided with a standardized connector (for example, a 3,5 phone jack) that

allows connection to a listening device for general use, the unweighted r.m.s. output level,

integrated over one week, as described in EN 50332-3, shall be ≤ 15 mV (analogue interface)

or -30 dBFS (digital interface) when playing the fixed “programme simulation noise” described

Measurements shall be made in accordance with EN 50332-1 or EN 50332-2 as applicable.

Except as given below, protection requirements for parts accessible to ordinary persons,

instructional safeguard in accordance with Clause F.5, except that the instructional

safeguard shall be placed on the equipment, or on the packaging, or in the instruction manual.

Alternatively, the instructional safeguard may be given through the equipment display during

– element 4: “Do not listen at high volume levels for long periods.” or equivalent wording

An equipment safeguard shall prevent exposure of an ordinary person to an RS2 source

without intentional physical action from the ordinary person and shall automatically return to an

output level not exceeding what is specified for an RS1 source when the power is switched off.

The equipment shall provide a means to actively inform the user of the increased sound level

when the equipment is operated with an output exceeding RS1. Any means used shall be

acknowledged by the user before activating a mode of operation which allows for an output

exceeding RS1. The acknowledgement does not need to be repeated more than once every 20 h

NOTE 2 Examples of means include visual or audible signals. Action from the user is always needed.

NOTE 3 The 20 h listening time is the accumulative listening time, independent of how often and how long the

Personal music players shall give the warnings as provided below when tested according to

The manufacturer may offer optional settings to allow the users to modify when and how they

wish to receive the notifications and warnings to promote a better user experience without

defeating the safeguards. This allows the users to be informed in a method that best meets their

physical capabilities and device usage needs. If such optional settings are offered, an

administrator (for example, parental restrictions, business/educational administrators, etc.) shall

The personal music player shall be supplied with easy to understand explanation to the user of

the dose management system, the risks involved, and how to use the system safely. The user

shall be made aware that other sources may significantly contribute to their sound exposure, for

When a dose of 100 % CSD is reached, and at least at every 100 % further increase of CSD, the

device shall warn the user and require an acknowledgement. In case the user does not

acknowledge, the output level shall automatically decrease to compliance with class RS1.

The warning shall at least clearly indicate that listening above 100 % CSD leads to the risk of

With only dose-based requirements, cause and effect could be far separated in time, defying the

purpose of educating users about safe listening practice. In addition to dose-based requirements,

a PMP shall therefore also put a limit to the short-term sound level a user can listen at.

The exposure-based limiter (EL) shall automatically reduce the sound level not to exceed

100 dB(A) or 150 mV integrated over the past 180 s, based on methodology defined in EN

50332-3. The EL settling time (time from starting level reduction to reaching target output) shall

Test of EL functionality is conducted according to EN 50332-3, using the limits from this clause.

For equipment provided as a package (player with its listening device), the level integrated over

180 s shall be 100 dB or lower. For equipment provided with a standardized connector, the un-

weighted level integrated over 180 s shall be no more than 150 mV for an analogue interface and

NOTE In case the source is known not to be music (or test signal), the EL may be disabled.

With 94 dB L acoustic pressure output of the listening device, and with the volume and sound

settings in the listening device (for example, built-in volume level control, additional sound

features like equalization, etc.) set to the combination of positions that maximize the measured

acoustic output, the input voltage of the listening device when playing the fixed “programme

NOTE The values of 94 dB and 75 mV correspond with 85 dB and 27 mV or 100 dB and 150 mV.

With any playing device playing the fixed “programme simulation noise” described in

EN 50332-1, and with the volume and sound settings in the listening device (for example, built-in

volume level control, additional sound features like equalization, etc.) set to the combination of

positions that maximize the measured acoustic output, the L , acoustic output of the listening

– with any playing and transmitting device playing the fixed programme simulation noise