Operating Instructions MA 25 / MA 25e
operating instructions_8012238-4_MA25_E_13a
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8012238-4 10/13
Calibration
Air Conduction:
ISO 389-1/ANSI S3.6 (DD45).
Calibration values:
AC-Headphone DD45
Force 4-5 N
Frequency [Hz]
Reference equivalent threshold according to
ISO 389-1 with coupler IEC 60 318-3
[dB] (re 20
Pa)
125
47.5
250
27.0
500
13.0
750
6.5
1000
6.0
1500
8.0
2000
8.0
3000
8.0
4000
9.0
6000
20.5
8000
12.0
Calibration Values: AC Headphone Radioear DD65 Force 10,1... 11,1 N
Frequency [Hz]
Reference equivalent threshold sound
pressure level according to WDH-Standard
with coupler IEC 60318-3
[dB] (re 20
Pa),
125
52,5
250
39,5
500
19,5
750
11,0
1000
8,5
1500
13,0
2000
9,0
3000
11,5
4000
10,5
5000
14,5
6000
29,0
8000
14,0
Содержание MA 25e
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