Tremetrics RA660, Operation Manual

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RA660 Operation Manual
8509790 Rev. 2 4 18/04/2018
1 Instrument Description
The RA660 is a pure-tone air conduction PC based group audiometer and is designed to be
used only by skilled personnel (Occupational Hearing Conservationist, Occupational Health
Nurse or a person with equivalent knowledge supervised by an audiologist, physician or ENT).
Typical users include military organizations, large industries, and medical offices, which
screen individuals for hearing loss or acuity. With proper operation, maintenance, and
scheduled calibrations, the RA660 provides reliable and repeatable results.
The RA660 determines hearing threshold levels using the proven Hughson-Westlake
Test Paradigm, which allows the operator to screen subjects for shifts in hearing acuity.
The audiograms obtained from the RA660 may be used to maintain records for the
subject and for the company administering the test. This helps the health care
professional evaluate and prevent major hearing problems.
Use the audiometer to document the subject’s current threshold which may be affected
from day to day noise exposure, colds, sinus infections, or other problems. To conduct
a subjective, reliable and reproducable hearing test the subject must be able to
respond to test signal in a rational way using a handswitch. Furthermore the subject
must be able to remove the headphones independently. The hearing test is suitable
for subjects from 5 years to geriatric.
The RA660 is a modular system allowing up to 8 audiometers to be connected to a
single USB port through the use of an interface box. Each RA660 audiometer has an
integrated bio-acoustic simulator that is used for daily calibration verification. Each
audiometer has an input for a room monitor microphone to verify the sound levels
present meet the requirements for testing.
Medical Disclaimer
Testing, as referred to in this manual, is the screening procedure used to establish
thresholds (hearing levels) and is not an attempt to diagnose, monitor, or treat any
medical problem, disease or injury. If a problem is suspected, the subject should be
referred to an audiologist, physician or ENT for evaluation.
1.1 Indications for Use Statement
The RA660 is a pure-tone air conduction screening audiometer. This audiometer is
used to screen for hearing loss in terms of shifts in hearing acuity.
1.2 Intended Use Statement
The RA660 is a PC based modular audiometer intended to be used for the screening
for hearing loss in subjects from five years to geriatric. The audiometer determines
hearing threshold levels using the proven Hughson-Westlake Test Paradigm, which
allows the operator to screen subjects for shifts in hearing acuity. It is intended to be
used by Occupational Hearing Conservationist, Occupational Health Nurse or a person
with equivalent knowledge supervised by an audiologist, physician or ENT as defined
in ANSI S3.1 or equivalent.