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BS EN IEC 60645-6:2022 – TC

BS EN IEC 60645-6:2022 – TC

$186.33

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

Published By Publication Date Number of Pages
BSI 2022 50
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PDF Catalog

PDF Pages PDF Title
1 30457863
27 A-30412781
28 undefined
31 Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
32 Blank Page
33 English
CONTENTS
35 FOREWORD
37 INTRODUCTION
38 1 Scope
2 Normative references
39 3 Terms and definitions
40 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
41 5.1.3 Stimulus frequency range
5.1.4 Stimulus level
42 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
43 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
44 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
45 6.3 Complete system
6.4 Maximum permitted expanded uncertainty of measurements Umax
Table 3 – Values of Umax for conformance and periodic calibration measurements
46 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
47 8 Additional characteristics to be specified by the manufacturer
9 Periodic calibration
48 Bibliography

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BS EN IEC 60645-6:2022 - TC
$186.33