Interacoustics Affinity 2.0 Manual De Instrucciones página 15

2.0
Affinity Instruction for Use - English
Date: 2008-10-03
Calibration: The output level control for speech signals is calibrated in terms of hearing
level for the A type audiometer and SPL for the A-E type
Masking levels are calibrated in terms of hearing level for type A and SPL
for type A-E.
Extended Range If not activated, the AC output will be limited to 20 dB below maximum
Function: output.
Tone, Warble Tone, CD1, CD2, Mic1, Mic2.
Input:
Warble Tone: (±12½%, 0-100Hz), sinewave or triangular.
100-10000Hz.
Frequency Range:
The frequency response with a TDH39 headphone is 125 – 8000 Hz, with or
Frequency Response:
without equivalent free field output.
The frequency response with a B71 bone vibrator is 250 – 6000 Hz.
FF Loudspeaker Max 6 W into 8 ohms, max 10 W into 4 ohms.
Output:
Line Out 1-4: 100-10000 Hz
Minimum Load 4.7 kΩ
Impedance:
VU-meter for speech: Response time approx. 350 mS, dynamic range: -20 - +3dB
12.5 dB in accordance with ANSI 3.6.
Speech RETSPL
value:
Narrow Band Noise or White Noise or Speech Noise
Masking Stimulus:
Narrow Band Noise 1/3 - 1/2 octave.
bandwidth:
Speech Noise Weighted random noise with a constant amplitude from 125 to 1000Hz and
bandwidth: falling 12 dB/octave from 1000Hz to 6000Hz.
Outputs: AC Left + Right, BC Left + Right, Insert Phone Left + Right, Insert Masking,
FF1 and FF2.
TDH39 Audiometric headset. (The audiometer has equivalent free field
output for TDH39 headphones).
Transducers:
EAR-Tone 5A Insert phones (optional)
HAD200 Audiometric headset (optional)
B71 Bone conductor calibrated for mastoid placement. (The bone vibrator
output is not available with equivalent free field output).
RETSPL levels for transducers:
Frequency TDH39
Hz dB (re 20 µPa)
125 45,0
250 25,5
500 11,5
750 7,5
1000 7,0
1500 6,5
2000 9,0
3000 10,0
4000 9,5
6000 15,5
8000 13,0
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HDA200 E-A-R Tone 5A
dB (re 20 µPa) dB (re 20 µPa)
IEC 126
29,5 26,0
18,0 14,0
9,5 5,5
6,5 2,0
6,5 0,0
5,5 2,0
3,0 3,0
3,0 3,5
8,5 5,5
9,5 2,0
16,0 0,0
B71
dB (re 20 µN)
IEC711
28,0 82,5
17,5 67,0
9,5 58,0
6,0 48,5
5,5 42,5
9,5 36,5
11,5 31,0
13,0 30,0
15,0 35,3
16,0 40,0
15,5 -