Introduction; What Is The Otoread Instrument - Interacoustics OtoRead Operation Manual

Introduction

The purpose of the OtoRead test system is to provide a rapid
measurement and documentation of Distortion Product Otoacoustic
Emissions (DPOAEs) or Transient Evoked Otoacoustic Emissions
(TEOAEs) at several frequencies.

What is the OtoRead Instrument?

The OtoRead Otoacoustic Emission test instrument is a hand-held
device designed to provide an objective measure of outer hair cell
function through the measurement of cochlear emissions. It consists
of the handheld unit, printer, single-use eartips and other
accessories. The OtoRead instrument may be used as a screening
tool or in conjunction with conventional tests as part of a full
audiological evaluation.
The OtoRead instrument contains the hardware and software for
generating the test stimuli, measuring and displaying the OAEs, and
storing the results until they are printed. The plastic housing contains
circuit boards that provide the signal processing and display the test
results. The instrument also contains 4 AA/UM-3/R6 alkaline
batteries to power the device. The instrument uses a liquid-crystal
display (LCD) and three light-emitting diodes (LEDs) to provide a
visual display of test data and test conditions to the operator. The
probe houses a microphone and two speaker tubes which produce
test stimuli and measure the sound pressure level (SPL) present in
the sealed ear canal. Interface of the instrument to the ear canal is
accomplished through disposable eartips made of industrial
elastomer, which fit onto the probe tip.
The disposable eartips are color coded to facilitate easy selection by
size. Four membrane-type push buttons located on the keypad of the
device allow the user to control testing and printing, and to reset test
protocols. Printing will commence upon placement of the instrument
into the cradle (if the printer is turned on).
OtoRead Screener Introduction Page 8