Interacoustics AA222 - Page 71

AA222 Instructions for Use – US Page 65
Transducers
DD45
TDH39
HDA300
HDA280
B71
B81
E.A.R Tone 3A/5A
IP30
Headband Static Force 4.5N ±0.5N
Headband Static Force 4.5N ±0.5N
Headband Static Force 8.8N ±0.5N
Headband Static Force 4.5N ±0.5N
Headband Static Force 5.4N ±0.5N
Headband Static Force 5.4N ±0.5N
Patient Response
switch
One hand held push button
Patient
communication
Talk Forward (TF) and Talk Back (TB)
Monitor
Output through built-in speaker or through external earphone or speaker.
Special tests/test
battery
SISI, ABLB, Stenger, Stenger Speech, Langenbeck (tone in noise), 2 channel
speech, Auto threshold
Auto threshold tests:
Available time for patient to respond: Same as tone presentation
Increment of hearing level: 5dB.
Tone
125-8000Hz.
Resolution 1/2-1/24 octave.
Warble Tone
1-10 Hz sine +/- 5% modulation
Wave file
44100Hz sampling, 16 bits, 2 channels
Masking
Automatic selection of narrow band noise (or white noise) for tone presentation and
speech noise for speech presentation.
Narrow band noise:
IEC 60645-1:2001, 5/12 Octave filter with the same centre frequency resolution as
pure Tone.
White noise:
80-20000Hz measured with constant bandwidth
Speech Noise:
IEC 60645-2:1993 125-6000Hz falling 12dB/octave above 1KHz +/-5dB
Presentation
Manual or Reverse. Single or multiple pulses.
Auto testing: duration 1-2 s adjusted in 0.1 s intervals
Intensity
Check the accompanying Appendix.
Available Intensity Steps is 1, 2 or 5dB
Extended range function: If not activated, the Air Conduction output will be limited to
20 dB below maximum output.
Frequency range
125Hz to 8kHz
125Hz, 250Hz, 750Hz, 1500Hz and 8kHz may freely be deselected