3M PELTOR WS ALERT MRX21A1WS7 Guía Rápida página 10

4.2. EUROPEAN STANDARD EN 352
EN 352-1 Sound attenuation and sizing
Table
ref.
B:A
Headband earmuffs with foam cushions
B:1 f = Octave-band centre frequency (Hz)
B:2
MV = Mean Value (dB)
B:3 SD = Standard Deviation (dB)
B:4
APV* = MV - SD (dB)
*Assumed Protection Value
B:5 H = Hearing protection estimation for high
frequency sounds (ƒ ≥ 2000Hz).
M = Hearing protection estimation for medium
frequency sounds (500Hz < ƒ < 2000Hz).
L = Hearing protection estimation for low
frequency sounds (ƒ ≤ 500Hz).
SNR = Single Number Rating of hearing
protector performance
B:6 S = Small
M = Medium
L = Large
EN 352-4 Level dependent function
Table
ref.
C:A Criterion levels
C:1
H = Criterion level for high-frequency noise
M = Criterion level for medium-frequency
noise
L = Criterion level for low-frequency noise
EN 352-6 Electrical Safety related audio input
Bluetooth
Table
ref.
D:A
External wireless safety related audio input
D:1 Input signal (dBFS)
D:2
Sound output level (dB(A))
D:3 Criterion input signal (dBFS) for which the
sound output level is equal to 82 dB(A)
D:4 Sound output level for maximum input signal
(dB(A))
D:5
Time equivalent to 82 dB(A) over 8h (hh:mm)
for maximum input signal
Description
Description
Description
5. OVERVIEW
5.1. COMPONENTS
(Figure E)
E:1 Headband (TPE, TPU)
E:2 Headband wire (stainless steel)
E:3 Two-point fastener (POM)
E:4 Cup (ABS)
E:5 Microphone for ambient listening (PET foam)
E:6 Dampening pad (PUR foam)
E:7 Ear cushion (PVC foil, PUR foam)
E:8 Speech microphone (PUR, TPE, PA)
E:9 Windshield (PUR foam)
E:10 [-] button on keypad (TPE)
E:11 [+] button on keypad (TPE)
E:12 Power button (TPE)
E:13 M button (TPE)
E:14 Bluetooth button (TPE)
E:15 USB Jack (TPE, ABS)
6. SETUP
6.1. GENERAL
The following points cover the main actions to make the
product ready for operation.
6.2. FIRST TIME USE
(Figure A:1)
The product is delivered in "shipping mode" to reduce
self-discharge and will not start until the charger is connected.
6.3. CHARGE BATTERIES
Make sure you have read and understand the contents of
Chapter 2. Safety before charging the battery/batteries.
6.3.1. CHARGING WITH CABLE
(Figure E)
1. Connect the USB-C connector to the headset (E:15).
2. Connect the other USB connector to an USB power
source.
EN
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