BS EN 61672-2:2013+A1:2017:2018 Edition
$189.07
Electroacoustics. Sound level meters – Pattern evaluation tests
| Published By | Publication Date | Number of Pages |
| BSI | 2018 | 48 |
This part of IEC 61672 provides details of the tests necessary to verify conformance to all mandatory specifications given in IEC 61672‑1 for time-weighting sound level meters, integrating-averaging sound level meters, and integrating sound level meters. Pattern-evaluation tests apply for each channel of a multi-channel sound level meter, as necessary. Tests and test methods are applicable to class 1 and class 2 sound level meters. The aim is to ensure that all laboratories use consistent methods to perform pattern-evaluation tests.
NOTE 1 In this document, references to IEC 61672‑1, IEC 61672‑2, and IEC 61672‑3 refer to the second editions unless stated otherwise.
NOTE 2 Procedures for the pattern-evaluation testing of sound level meters designed to conform to the specifications of IEC 61672‑1:2002 were given in IEC 61672‑2:2003.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 4 | Foreword Endorsement notice |
| 5 | Annex ZA (normative) Normative references to international publications with their corresponding European publications |
| 9 | Annex ZA(normative)Normative references to international publicationswith their corresponding European publications |
| 13 | English CONTENTS |
| 15 | 1 Scope 2 Normative references |
| 16 | 3 Terms and definitions 4 Submission for testing |
| 17 | 5 Marking of the sound level meter and information in the Instruction Manual 6 Mandatory facilities and general requirements |
| 19 | 7 Environmental, electrostatic, and radio-frequency tests 7.1 General |
| 20 | 7.2 Uncertainties for measurements of environmental test conditions 7.3 Influence of static pressure |
| 21 | 7.4 Limits on air temperature, relative humidity and static pressure 7.5 Acclimatization requirements for tests of the influence of air temperature and relative humidity 7.6 Abbreviated test of the combined influence of air temperature and relative humidity |
| 23 | 7.7 Influence of air temperature |
| 24 | 7.8 Influence of relative humidity |
| 25 | 7.9 Influence of electrostatic discharges |
| 26 | 7.10 Influence of a.c. power-frequency and radio-frequency fields 7.10.1 Sound signal 7.10.2 AC power-frequency tests 7.10.3 Radio-frequency tests |
| 28 | 8 Radio-frequency emissions and public power supply disturbances |
| 29 | 9 Electroacoustical performance tests 9.1 General |
| 30 | 9.2 Indication at the calibration check frequency 9.3 Directional response |
| 32 | 9.4 Tests of frequency weightings with acoustical signals 9.4.1 General |
| 33 | 9.4.2 Windscreen corrections 9.4.3 Free-field tests |
| 34 | 9.4.4 Comparison coupler tests |
| 35 | 9.4.5 Conformance 9.4.6 Random incidence |
| 36 | 9.5 Tests of frequency weightings with electrical signals 9.5.1 General 9.5.2 First alternative test procedure (variable input signal level) 9.5.3 Second alternative test procedure (constant input signal level) |
| 37 | 9.5.4 Conformance 9.5.5 Frequency weightings C or Z at 1 kHz 9.6 Corrections for the effect of reflections from the case of a sound level meter and diffraction around a microphone |
| 38 | 9.7 Corrections to obtain free-field or random-incidence sound levels |
| 39 | 9.8 Level linearity 9.8.1 Tests at an air temperature near the reference air temperature |
| 40 | 9.8.2 Tests at elevated air temperature 9.9 Under-range indication 9.10 Self-generated noise level |
| 41 | 9.11 Decay time constants for time weightings F and S 9.12 Toneburst response for sound level meters that measure time-weighted sound level |
| 42 | 9.13 Toneburst response for sound level meters that measure sound exposure level or time-averaged sound level |
| 43 | 9.14 Response to sequences of repeated tonebursts for sound level meters that measure time-averaged sound level 9.15 Overload indication |
| 44 | 9.16 C-weighted peak sound level |
| 45 | 9.17 Reset 9.18 Electrical output 9.19 Timing facilities 9.20 Crosstalk in multi-channel sound level meter systems 9.21 Power supply |
| 46 | 10 Pattern evaluation report |
| 47 | Bibliography |
