Interacoustics AT235 Instructions For Use

AT235 Instructions for Use - EN Page 51
Terminal latency = 23 ms (5 ms)
Fall time = 44 ms (5 ms)
Overshoot = max. 1%
Undershoot = max 1%
Pressure
Range:
Values between -600 to +400 daPa can be selected in
the setup.
Safety limits:
-750 daPa and +550 daPa, 50 daPa
Reflex Calibration Standards and Spectral Properties:
General
Specifications for stimulus and audiometer signals are made to follow IEC 60645-5
Contralateral Earphone
Pure tone:
ISO 389-1 for TDH39 and ISO 389-2 for CIR 55.
Wide Band noise (WB):
Spectral properties:
Interacoustics Standard
As “Broad band noise” specified in IEC 60645-5, but
with 500 Hz as lower cut-off frequency.
Low Pass noise (LP):
Spectral properties:
Interacoustics Standard
Uniform from 500 Hz to 1600 Hz, 5 dB re. 1000 Hz
level
High Pass noise (HP):
Spectral properties:
Interacoustics Standard
Uniform from 1600 Hz to 10KHz, 5 dB re. 1000 Hz
level
Ipsilateral Earphone
Pure tone:
Interacoustics Standard.
Wide Band noise (WB):
Spectral properties:
Interacoustics Standard
As “Broad band noise” specified in IEC 60645-5, but
with 500 Hz as lower cut-off frequency.
Low Pass noise (LP):
Spectral properties:
Interacoustics Standard
Uniform from 500 Hz to 1600 Hz, 10 dB re. 1000 Hz
level
High Pass noise (HP):
Spectral properties:
Interacoustics Standard
Uniform from 1600 Hz to 4000 Hz, 10 dB re. 1000 Hz
level
General about levels:
The actual sound pressure level at the eardrum will
depend on the volume of the ear.
The risk of artifacts at higher stimulus levels in reflex measurements are minor and will not activate the
reflex detection system

Interacoustics AT235 Specifications

General

Brand	Interacoustics
Model	AT235
Category	Measuring Instruments
Language	English