Adjusting The Sound Amplification; Noise Attenuation (According To The Standard En 352-1: 2002); Sound Pressure Level (According To The Standard En 352-4: 2001 + A1: 2005); In Case Of Malfunction - Num'axes CAS1021 Guide D'utilisation

Adjusting the sound amplification

Sound adjustment on the headset is independently adjustable for each ear. To amplify the sound, once
your headset is turned on, simply continue turning the button on each cup in a clockwise direction. Low
environmental noises will then be amplified up to ten times, if you turn the buttons up to the maximum.

Noise attenuation (according to the standard EN 352-1: 2002)

On average, the NUM'AXES headset attenuates noises that are dangerous for your hearing by 21 dB.
Minimum Sound Attenuation (according to the standard EN 352-1: 2002)
Frequency
[Hz]
63
125
250
500
1000
2000
4000
8000

Sound pressure level (according to the standard EN 352-4: 2001 + A1: 2005)

H = 99 dB M = 99 dB

In case of malfunction

Before determining that there is a malfunction with the product, make sure you go through this guide
once again and ensure that the problem is not due to weak batteries or user error.
If the problem persists or for any further information on your product, call NUM'AXES after-sales on:
+33 (0)2 38 69 96 27. With the aid of our technicians, many problems can be resolved over the phone.
You can also contact us at export@numaxes.com.
Depending on the extent of the malfunction, you may need to return your product to NUM'AXES after-
sales to be repaired and tested.
CAS1021 – ind.C – novembre 2018
SNR = 21 dB H = 24 dB
Sound attenuation
[dB]
11.4
10.6
13.7
17.6
22.7
25.0
34.0
31.4
L = 93 dB
M = 18 dB L = 13 dB
Standard
deviation
[dB]
4.0
3.5
3.0
3.3
2.1
2.5
5.5
5.4
APV
[dB]
7.4
7.1
10.7
14.3
20.6
22.5
28.5
26.0
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