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TR F No. IEC62368_1 C
are offered, an administrator (for example, parental
restrictions, business/educational administrators,
etc.) shall be able to lock any optional settings into a
specific configuration.
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
ma de aware that other sources may significantly
contribute to their sound exposure, for example
work, transportation, concerts, clubs, cinema, car
races, etc.
10.6.5.2 Dose - based warning and requirements
When a dose of 100 % CSD is reached, and at lea st
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
hearing damage or loss. N/A
10.6.5.3 Exposure - based requirements
With only dose - based requirements, cause and
effect could be far separated in time, defying the
purpose of educating users abo ut 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 be 10 s or
faster.
Test of EL functionality is conducted according to
EN 50 332 - 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 unweighted level
integrate d over 180 s shall be no more than 150 mV
for an analogue interface and no more than - 10
dBFS for a digital interface.
NOTE In case the source is known not to be music (or test
signal), the EL may be disabled. N/A
10.6.6
Requirements for listening devic es (headphones, earphones, etc.)
N/A
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TR F No. IEC62368_1 C
8
Modification to 10.5.1
N/A
10.5.1 Add the following after the first paragraph:
For RS 1 compliance is checked by measurement
under the fol lowing conditions:
In addition to the normal operating conditions, all
controls adjustable from the outside by hand, by any
object such as a tool or a coin, and those internal
adjustments or pre - sets which are not locked in a
reliable manner, are adjusted so as to give
maximum radiation whilst maintaining an intelligible
picture for 1 h, at the end of which the measurement
is made.
NOTE Z1 Soldered joints and paint lockings are examples of
adequate locking.
The dose - rate is determined by means of a radia tion
monitor with an effective area of 10 cm², at any point
10 cm from the outer surface of the apparatus.
Moreover, the measurement shall be made under
fault conditions causing an increase of the high
voltage, provided an intelligible picture is maintain ed
for 1 h, at the end of which the measurement is
made.
For RS1, the dose - rate shall not exceed 1 μSv/h
taking account of the background level.
NOTE Z2 These values appear in Directive 96/29/Euratom of 13
May 1996. N/A
9
Modification to G.7.1
N/A
G.7.1 Add the following note:
NOTE Z1 The harmonized code designations corresponding to
the IEC cord t ypes are given in Annex ZD. N/A
