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BS EN IEC 60645-6:2022

BS EN IEC 60645-6:2022

$142.49

Electroacoustics. Audiometric equipment – Instruments for the measurement of otoacoustic emissions

Published By Publication Date Number of Pages
BSI 2022 24
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PDF Pages PDF Title
2 undefined
5 Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
6 Blank Page
7 English
CONTENTS
9 FOREWORD
11 INTRODUCTION
12 1 Scope
2 Normative references
13 3 Terms and definitions
14 4 Requirements for specific instruments
5 General specifications
5.1 Acoustic stimulus system
5.1.1 General requirements
5.1.2 Stimulus types
Table 1 – Mandatory functions for otoacoustic emission instruments
15 5.1.3 Stimulus frequency range
5.1.4 Stimulus level
16 5.1.5 Intermodulation distortion
5.2 Test quality assuring system
5.2.1 Stability of acoustic response in the external auditory meatus
5.2.2 Test quality assurance
5.2.3 Individual stimulus recordings
17 5.3 Measuring system
5.3.1 Units of measurement
5.3.2 Measurement range
5.3.3 Accuracy of measurement
5.3.4 Frequency range
5.3.5 Noise reduction
5.3.6 Response detection
5.3.7 Response quality estimates
5.3.8 Normative values
5.4 Presentation of results
18 6 Demonstration of conformity with specifications
6.1 General
6.2 Probe signal
6.2.1 Probe signal frequency spectrum
6.2.2 Probe signal level and harmonic distortion
6.2.3 Probe measurement accuracy
Table 2 – Documentation of test conditions, parameters and results
19 6.3 Complete system
6.4 Maximum permitted expanded uncertainty of measurements Umax
Table 3 – Values of Umax for conformance and periodic calibration measurements
20 7 General requirements
7.1 Marking
7.2 Instruction manual
7.3 Safety requirements
7.4 Immunity to power and radiofrequency fields
7.5 Warm-up time
7.6 Voltage supply variation and environmental conditions
7.6.1 Mains operation
7.6.2 Battery operation
7.6.3 Environmental conditions
21 8 Additional characteristics to be specified by the manufacturer
9 Periodic calibration
22 Bibliography

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BS EN IEC 60645-6:2022
$142.49