Harman Kardon AVR 171 (serv.man5) EMC - CB Certificate ▷ View online
Page 4 of 16
Report No.: 232174
ATTACHMENT 4
Clause
Requirement + Test
Result - Remark
Verdict
TRF No. IEC60065K
Cont.
Zx Protection against excessive sound pressure from personal music players
—
Zx.1 General
This sub-clause specifies requirements for
protection against excessive sound pressure from
personal music players that are closely coupled to
the ear. It also specifies requirements for
earphones and headphones intended for use with
personal music players.
This sub-clause specifies requirements for
protection against excessive sound pressure from
personal music players that are closely coupled to
the ear. It also specifies requirements for
earphones and headphones intended for use with
personal music players.
A personal music player is a portable equipment
for personal use, that:
- is designed to allow the user to listen to recorded
or broadcast sound or video; and
- primarily uses headphones or earphones that can
be worn in or on or around the ears; and
- allows the user to walk around while in use.
- is designed to allow the user to listen to recorded
or broadcast sound or video; and
- primarily uses headphones or earphones that can
be worn in or on or around the ears; and
- allows the user to walk around while in use.
NOTE 1 Examples are hand-held or body-worn portable CD
players, MP3 audio players, mobile phones with MP3 type
features, PDA’s or similar equipment.
players, MP3 audio players, mobile phones with MP3 type
features, PDA’s or similar equipment.
A personal music player and earphones or
headphones intended to be used with personal
music players shall comply with the requirements of
this sub-clause.
headphones intended to be used with personal
music players shall comply with the requirements of
this sub-clause.
The requirements in this sub-clause are valid for
music or video mode only.
music or video mode only.
The requirements do not apply:
- while the personal music player is connected to
an external amplifier; or
- while the headphones or earphones are not used.
- while the personal music player is connected to
an external amplifier; or
- while the headphones or earphones are not used.
NOTE 2 An external amplifier is an amplifier which is not part of
the personal music player or the listening device, but which is
intended to play the music as a standalone music player.
the personal music player or the listening device, but which is
intended to play the music as a standalone music player.
The requirements do not apply to:
- hearing aid equipment and professional
equipment;
- hearing aid equipment and professional
equipment;
NOTE 3 Professional equipment is equipment sold through
special sales channels. All products sold through normal
electronics stores are considered not to be professional
equipment.
special sales channels. All products sold through normal
electronics stores are considered not to be professional
equipment.
- analogue personal music players (personal music
players without any kind of digital
processing of the sound signal) that are brought
to the market before the end of 2015.
players without any kind of digital
processing of the sound signal) that are brought
to the market before the end of 2015.
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.
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.
For equipment which is clearly designed or
intended for use by young children, the limits of
EN 71-1 apply.
intended for use by young children, the limits of
EN 71-1 apply.
No portable sound system.
N/A
Page 5 of 16
Report No.: 232174
ATTACHMENT 4
Clause
Requirement + Test
Result - Remark
Verdict
TRF No. IEC60065K
Cont.
Zx.2 Equipment requirements
No safety provision is required for equipment that
complies with the following:
- equipment provided as a package (personal music
complies with the following:
- equipment provided as a package (personal music
player with its listening device), where
the acoustic output LAeq,T is ≤ 85 dBA measured
while playing the fixed “programme
simulation noise” as described in EN 50332-1; and
- a personal music player provided with an
analogue electrical output socket for a listening
device, where the electrical output is ≤ 27 mV
measured as described in EN 50332-2, while
playing the fixed “programme simulation noise” as
described in EN 50332-1.
- a personal music player provided with an
analogue electrical output socket for a listening
device, where the electrical output is ≤ 27 mV
measured as described in EN 50332-2, while
playing the fixed “programme simulation noise” as
described in EN 50332-1.
NOTE 1 Wherever the term acoustic output is used in this
clause, the 30 s A-weighted equivalent sound pressure level
L
clause, the 30 s A-weighted equivalent sound pressure level
L
Aeq,T
is
meant. See also Zx.5 and Annex Zx.
All other equipment shall:
a) protect the user from unintentional acoustic
outputs exceeding those mentioned above; and
b) have a standard acoustic output level not
exceeding those mentioned above, and
outputs exceeding those mentioned above; and
b) have a standard acoustic output level not
exceeding those mentioned above, and
automatically return to an output level not
exceeding those mentioned above when the
power is switched off; and
exceeding those mentioned above when the
power is switched off; and
c) provide a means to actively inform the user of the
ncreased sound pressure when the equipment is
operated with an acoustic output exceeding
those mentioned above. Any means used shall be
acknowledged by the user before activating a
mode of operation which allows for an acoustic
output exceeding those mentioned above. The
acknowledgement does not need to be repeated
more than once every 20 h of cumulative
listening
ncreased sound pressure when the equipment is
operated with an acoustic output exceeding
those mentioned above. Any means used shall be
acknowledged by the user before activating a
mode of operation which allows for an acoustic
output exceeding those mentioned above. The
acknowledgement does not need to be repeated
more than once every 20 h of cumulative
listening
time;
and
NOTE 2 Examples of means include visual or audible signals.
Action from the user is always required.
NOTE 3 The 20 h listening time is the accumulative listening
time, independent how often and how long the personal music
player has been switched off.
Action from the user is always required.
NOTE 3 The 20 h listening time is the accumulative listening
time, independent how often and how long the personal music
player has been switched off.
d) have a warning as specified in Zx.3; and
e) not exceed the following:
e) not exceed the following:
1) equipment provided as a package (player with
Its listening device), the acoustic output shall be ≤
100 dBA measured while playing the fixed
“programme simulation noise” described in EN
50332-1;
Its listening device), the acoustic output shall be ≤
100 dBA measured while playing the fixed
“programme simulation noise” described in EN
50332-1;
and
2) a personal music player provided with an
analogue electrical output socket for a listening
device, the electrical output shall be ≤ 150 mV
measured as described in EN 50332-2, while
playing the fixed “programme simulation noise”
described in EN 50332-1.
analogue electrical output socket for a listening
device, the electrical output shall be ≤ 150 mV
measured as described in EN 50332-2, while
playing the fixed “programme simulation noise”
described in EN 50332-1.
No portable sound system.
N/A
Page 6 of 16
Report No.: 232174
ATTACHMENT 4
Clause
Requirement + Test
Result - Remark
Verdict
TRF No. IEC60065K
Cont.
For music where the average sound pressure (long
term L
term L
Aeq,T
) measured over the duration of the
song is lower than the average produced by the
programme simulation noise, the warning does not
need to be given as long as the average sound
pressure of the song is below the basic limit of 85
dBA. In this case T becomes the duration of the
song.
programme simulation noise, the warning does not
need to be given as long as the average sound
pressure of the song is below the basic limit of 85
dBA. In this case T becomes the duration of the
song.
NOTE 4 Classical music typically has an average sound
pressure (long term L
pressure (long term L
Aeq,T
) which is much lower than the average
programme simulation noise. Therefore, if the player is capable
to analyse the song and compare it with the programme
simulation noise, the warning does not need to be given as long
as the average sound pressure of the song is below the basic
limit of 85 dBA.
to analyse the song and compare it with the programme
simulation noise, the warning does not need to be given as long
as the average sound pressure of the song is below the basic
limit of 85 dBA.
For example, if the player is set with the programme simulation
noise to 85 dBA, but the average music level of the song is only
65 dBA, there is no need to give a warning or ask an
acknowledgement as long as the average sound level of the
song is not above the basic limit of 85 dBA.
noise to 85 dBA, but the average music level of the song is only
65 dBA, there is no need to give a warning or ask an
acknowledgement as long as the average sound level of the
song is not above the basic limit of 85 dBA.
No portable sound system.
N/A
Zx.3 Warning
The warning shall be placed on the equipment, or
on the packaging, or in the instruction manual and
shall consist of the following:
- the symbol of Figure 1 with a minimum height of
5 mm; and
- the following wording, or similar:
The warning shall be placed on the equipment, or
on the packaging, or in the instruction manual and
shall consist of the following:
- the symbol of Figure 1 with a minimum height of
5 mm; and
- the following wording, or similar:
“To prevent possible hearing damage, do not listen
at high volume levels for long periods.”
at high volume levels for long periods.”
Figure 1 – Warning label (IEC 60417-6044)
Alternatively, the entire warning may be given
through the equipment display during use,
when the user is asked to acknowledge activation
of the higher level.
through the equipment display during use,
when the user is asked to acknowledge activation
of the higher level.
No portable sound system.
N/A
Page 7 of 16
Report No.: 232174
ATTACHMENT 4
Clause
Requirement + Test
Result - Remark
Verdict
TRF No. IEC60065K
Cont.
Zx.4 Requirements for listening devices (headphones and earphones)
—
Zx.4.1 Wired listening devices with analogue
input
With 94 dBA sound pressure output L
input
With 94 dBA sound pressure output L
Aeq,T
, the input
voltage of the fixed “programme simulation noise”
described in EN 50332-2 shall be ≥ 75 mV.
described in EN 50332-2 shall be ≥ 75 mV.
This requirement is applicable in any mode where
the headphones can operate (active or
passive), including any available setting (for
example built-in volume level control).
the headphones can operate (active or
passive), including any available setting (for
example built-in volume level control).
NOTE The values of 94 dBA – 75 mV correspond with 85dBA –
27 mV and 100 dBA – 150 mV.
27 mV and 100 dBA – 150 mV.
No portable sound system.
N/A
Zx.4.2 Wired listening devices with digital input
With any playing device playing the fixed
“programme simulation noise” described in
EN 50332-1 (and respecting the digital interface
standards, where a digital interface standard
exists that specifies the equivalent acoustic level),
the acoustic output L
“programme simulation noise” described in
EN 50332-1 (and respecting the digital interface
standards, where a digital interface standard
exists that specifies the equivalent acoustic level),
the acoustic output L
Aeq,T
of the listening device
shall be ≤ 100 dBA.
This requirement is applicable in any mode where
the headphones can operate, including any
available setting (for example built-in volume level
control, additional sound feature like
equalization, etc.).
the headphones can operate, including any
available setting (for example built-in volume level
control, additional sound feature like
equalization, etc.).
NOTE An example of a wired listening device with digital input is
a USB headphone.
a USB headphone.
No portable sound system.
N/A
Click on the first or last page to see other AVR 171 (serv.man5) service manuals if exist.