Technical Specifications - Interacoustics AT235 Impedance Audiometer Gebrauchsanweisung

AT235 Instruction for Use - English
Date: 2001-06-15
The technical specifications provided here cover the general aspects of the instrument, while more
specific details are found Operation Manual in English.
Standards:
Audiometer
Impedance
Safety
The CE mark indicates that the instrument is made to fulfil the demands of the Council Directive
93/42/EEC concerning medical devices and that TÜV Product Service, identification no. 0123,
has approved the quality system of Interacoustics.
Impedance:
Probe Tone Frequency:
Probe Tone Intensity :
Pressure Range
Accuracy
Compliance Range
Compliance Accuracy :
Reflex:
Manual or automatic testing with 18 stimuli to each ear.
Auto Reflex Detection.
Multiple Reflex stimuli.
Stimulus Duration
Reflex Acceptance
Ipsi Frequencies
Intensity (Max.)
Contra Frequencies
Intensity (Max.)
Reflex Decay:
Stimulus Duration
Stimulus Frequency
Stimulus Intensity
Audiometer:
Type 4 according to EN 60645-1, ANSI S3.6.
Frequencies Hz:
125
250
500
1000
2000
3000
4000
6000
8000
Auto Threshold Determination (Modified Hughson Westlake).

Technical Specifications

: EN 60645-1, ANSI S3.6, Type 4
: EN 61027, ANSI S3.39, Type 2
: EN 60601-1, Class 1, Type B, EMC: EN60601-1-2
226 Hz ± 1%
85 dB SPL ± 1.5 dB
: +300 to -600 daPa
± 5% or ± 10 daPa
:
: 0.1-6 ml.
± 5% or 0.1 ml.
: 1.0 sec.
: Adjustable between 2% and 6%, or 0.05 – 0.15 ml change of
ear canal volume.
: 500, 1000, 2000, 3000, 4000 Hz, wide band, high and low pass.
: 100, 105, 110 dBHL.
: 250, 500, 1000, 2000, 3000, 4000, 6000, 8000 Hz, wide band,
high and low pass.
: 90, 100, 120, dBHL.
: 10 sec.
:
}
Ipsi and Contra as above.
:
Intensities dBHL:
-10 to 90
-10 to 90
-10 to 120
-10 to 120
-10 to 120
-10 to 120
-10 to 120
-10 to 120
-10 to 110
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