ISOtunes IT-48, Руководство пользователя

Страница: 13 / 143

EN | 13
Fitting
ANSI S3.19-1974 Table (NRR Table)
EN 352-2:2002 Table (SNR Table)
B5:
SNR: 30 dB
H= 34 dB
M= 27 dB
L= 21 dB
APVf=MF-SF9 (dB)
Models
IT-48 LINK 2.0
IT-49 LINK 2.0 EN 352
Important
Please read, understand, and follow all safety information.
Fitting
1. Remove the white foam inserts from each earcup
2. Pull the earcups apart
3. Place the product on your head
4. Adjust the earcup position by extending the headband to
ensure a good fit around the ears
Introduction
Thank you for purchasing ISOtunes® LINK 2.0 Professional
Noise Isolating Earmuffs. These earmuffs have been specifically
designed for use in noisy environments – allowing you to block
out much of the surrounding noise so that you can listen to your
music or talk on the phone with less interruption. This product
has been tested and meets the European Safety Standard EN 352-
1:2002, EN 352-6:2002, EN 352-8:2008, RED directive 2014/53/EU,
harmonized standard EN 60065-2014+A11-2017, EN 62479:2020,
ETSI EN 300 328 V2.1.1, ETSI EN 301 489-1 V2.1.1,ETSI EN 301
489-17 V3.1.1and the ANSI standards for a hearing protector, with
a Single Number Rating (SNR) of 30 dB with a Noise Reduction
Rating (NRR) of 25 dB. Full testing details are available in the
Noise Attenuation section of this booklet.
Noise Attenuation
APPROVAL: ISOtunes® LINK 2.0 is tested and approved in
accordance with ANSI S3.19-1974 Specifications and the
European Safety Standard EN 352-1:2002, EN 352-6:2002, and
EN 352-8:2008.
ANSI
S3.19-1974
The level of noise entering a person’s ear, when ISOtunes® LINK
2.0 headphones are worn as directed, is closely approximated by
the difference between the A-weighted environmental noise level
and the Noise Reduction Rating (NRR). Improper fit of this device
will reduce its effectiveness in attenuating noise. Consult the
enclosed instructions for proper fitting.
A1: Frequency (Hz)
A2: Mean Attenuation (dB)
A3: Standard Deviation (dB)
Example:
1. The surrounding noise level measured at the ear is 100 dB.
2. The NRR of ISOtunes® LINK 2.0 is 25 dB.
3. The noise level entering the ear is approximately equal to 75dB.
Please note that the NRR is based on the attenuation of
continuous noise and may not be an accurate indicator of the
LEGALITIES
FIG 1
FIG 2 FIG 3
R