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Interacoustics AC40 Service Manual

Interacoustics AC40
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AC40 Service Manual Page 14
Equivalent free field
Equivalent Free Field
Speech Audiometer
TDH39 HDA200 HDA280 DD45
IEC60645-2 1997
ANSI S3.6-2010
ISO389-8 2004 PTB
PTB – DTU
IEC60318-3 1998 IEC60318-1 IEC60318-3 1998 2010
Frequency G
F
-G
C
G
F
-G
C
G
F
-G
C
G
F
-G
C
125 -17,5 -5,0 -15,0 -21.5
160 -14,5 -4,5 -14,0 -17.5
200 -12,0 -4,5 -12,5 -14.5
250 -9,5 -4,5 -11,5 -12.0
315 -6,5 -5,0 -10,0 -9.5
400 -3,5 -5,5 -9,0 -7.0
500 -5,0 -2,5 -8,0 -7.0
630 0,0 -2,5 -8,5 -6.5
750 -5,0
800 -0,5 -3,0 -4,5 -4.0
1000 -0,5 -3,5 -6,5 -3.5
1250 -1,0 -2,0 -11,5 -3.5
1500 -12,5
1600 -4,0 -5,5 -12,5 -7.0
2000 -6,0 -5,0 -9,5 -7.0
2500 -7,0 -6,0 -7 -9.5
3000 -10,5
3150 -10,5 -7,0 -10,0 -12.0
4000 -10,5 -13,0 -14,5 -8.0
5000 -11,0 -14,5 -12,5 -8.5
6000 -14,5
6300 -10,5 -11,0 -15,5 -9.0
8000 +1,5 -8,5 -9,0 -1.5
General properties for earphones
Sound attenuation values for earphones
Frequenc
y
Attenuation
TDH39/DD45 with MX41/
AR or PN 51 cushion
EAR-Tone 3A
EAR-Tone 5A
HDA200
[Hz] [dB] [dB] [dB]
125 3 33,5 14,5
160 4
200 5
250 5 34,5 16
315 5
400 6
500 7 34,5 22,5
630 9
750 -
800 11
1000 15 35,0 28,5
1250 18
1500 -
1600 21
2000 26 33,0 32
2500 28
3000 -
3150 31
4000 32 39,5 45,5
5000 29
6000 -
6300 26
8000 24 43,5 44

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Interacoustics AC40 Specifications

General IconGeneral
BrandInteracoustics
ModelAC40
CategoryMeasuring Instruments
LanguageEnglish

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