Interacoustics AT235 Instructions For Use Manual page 57

AT235 Instructions for Use - EN
Pressure Range:
Safety limits:
Reflex Calibration Standards and Spectral Properties:
General Specifications for stimulus and audiometer signals are made to follow IEC 60645-5
Contralateral Earphone Pure tone:
Wide Band noise (WB):
Spectral properties:
Low Pass noise (LP):
Spectral properties:
High Pass noise (HP):
Spectral properties:
Ipsilateral Earphone Pure tone:
Wide Band noise (WB):
Spectral properties:
Low Pass noise (LP):
Spectral properties:
High Pass noise (HP):
Spectral properties:
General about levels:
The risk of artifacts at higher stimulus levels in reflex measurements are minor and will not activate the
reflex detection system
Terminal latency = 23 ms (5 ms)
Fall time = 44 ms (5 ms)
Overshoot = max. 1%
Undershoot = max 1%
Values between -600 to +400 daPa can be selected in
the setup.
-750 daPa and +550 daPa, 50 daPa
ISO 389-1 for TDH39 and ISO 389-2 for CIR 55.
Interacoustics Standard
As "Broad band noise" specified in IEC 60645-5, but
with 500 Hz as lower cut-off frequency.
Interacoustics Standard
Uniform from 500 Hz to 1600 Hz, 5 dB re. 1000 Hz
level
Interacoustics Standard
Uniform from 1600 Hz to 10KHz, 5 dB re. 1000 Hz
level
Interacoustics Standard.
Interacoustics Standard
As "Broad band noise" specified in IEC 60645-5, but
with 500 Hz as lower cut-off frequency.
Interacoustics Standard
Uniform from 500 Hz to 1600 Hz, 10 dB re. 1000 Hz
level
Interacoustics Standard
Uniform from 1600 Hz to 4000 Hz, 10 dB re. 1000 Hz
level
The actual sound pressure level at the eardrum will
depend on the volume of the ear.
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