Service Manual MA 42
D-0125965 Rev. D
43
18/05/2022
Calibration Values and Max Levels: Headphone DD65 V2
Coupler IEC 60318-1, PTB Report 2018, AAU Report 2018
Fre-
quency
[Hz]
Tone/Ped.
Noise
RETSPL
dB re 20µPa
NBN
RETSPL
dB re
20µPa
Tone/Ped.
Noise
Max Level
[dB HL]
Max NBN
[dB HL]
Sound
Attenuation
[dB]
ISO 8253-1
G
F
- G
C
[dB]
125
30.5
34.5
80/68
65
8.3
-4.5
250
17.0
21.0
100/88
85
15.5
-4.5
500
8.0
12.0
110/98
95
26.1
-3.0
750
5.5
10.5
115/103
100
-
-
1000
4.5
10.5
115/103
100
32.4
-1.5
1500
2.5
8.5
115/103
100
-
-
2000
2.5
8.5
115/103
95
43.6
-2.5
3000
2.0
8.0
115/103
100
-
-
4000
9.5
14.5
110/98
95
43.8
-9.5
6000
21.0
26.0
100/88
85
-
-
8000
21.0
26.0
95/82
80
45.6
-4.5
Signal
Speech
Speech
Equ. FF
Speech
Noise
Speech
Noise
Equ. FF
White
Noise
IEC 60645-1 RETSPL
20.0
1.5
20.0
1.5
0.0
IEC Max Level [dB HL]
85
100
80
90
110
ANSI S3.6 RETSPL
17.0
16.5
17.0
16.5
0.0
ANSI Max Level [dB HL]
90
85
85
80
110
JIS T 1201-2 RETSPL
14.0
1.5
14.0
1.5
n/a
JIS Max Level [dB HL]
91
100
86
90
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...
