Service Manual MA 42
D-0125965 Rev. D
42
18/05/2022
6.2 Calibration Values and Maximum Levels
Calibration Values and Max Levels: Headphone DD45
Coupler IEC 60318-3, PTB Report 2009, DTU Report 2010
Fre-
quen-
cy
[Hz]
Tone/Ped.
Noise
RETSPL
dB re 20µPa
NBN
RETSPL
dB re 20µPa
Tone/Ped.
Noise
Max Level
[dB HL]
NBN
Max Level
[dB HL]
Sound
Attenuation
[dB]
ISO 8253-1
G
F
- G
C
[dB]
125
47.5
51.5
85/73
65
3
-21.5
250
27.0
31.0
105/93
85
5
-12.0
500
13.0
17.0
120/108
100
7
-7.0
750
6.5
11.5
120/108
105
-
-
1000
6.0
12.0
120/108
105
15
-3.5
1500
8.0
14.0
120/108
105
-
-
2000
8.0
14.0
120/108
105
26
-7.0
3000
8.0
14.0
120/108
105
-
-
4000
9.0
14.0
120/108
105
32
-8.0
6000
20.5
25.5
120/108
95
-
-
8000
12.0
17.0
120/108
95
24
-1.5
Signal
Speech
Speech
Equ. FF
Speech
Noise
Speech
Noise
Equ. FF
White
Noise
IEC 60645-1 RETSPL
20.0
3.5
20.0
3.5
0.0
IEC Max Level [dB HL]
100
110
95.0
105
120
ANSI S3.6 RETSPL
18.5
18.5
18.5
18.5
0.0
ANSI Max Level [dB HL]
100
95
95.0
90
120
JIS T 1201-2 RETSPL
14.0
3.5
14.0
3.5
n/a
JIS Max Level [dB HL]
106
110
101
105
n/a
Содержание MA 42
Страница 1: ...MA 42 Service Manual...
Страница 31: ...Service Manual MA 42 D 0125965 Rev D 30 18 05 2022 Put out encoder PCA Remove screws from the impeller...
Страница 34: ...Service Manual MA 42 D 0125965 Rev D 33 18 05 2022 Take out light guides...
Страница 37: ...Service Manual MA 42 D 0125965 Rev D 36 18 05 2022 Disassamble screws and screw fittings from the PCA...
