GB/T 3785.2-2023Electroacoustics - Sound level meters - Part 2: Pattern evaluation tests (English PDF)

1 Scope

This document specifies the requirements for verifying that time-weighted sound level meters, integrated average sound level meters and integral sound level meters comply with the requirements given in IEC 61672-1:

There are details of the tests required in the prerequisite specification, and if necessary, type evaluation tests are applied to each channel of the multi-channel sound level meter:

This document applies to Class 1 and Class 2 sound level meters: Its purpose is to ensure that all laboratories use a consistent method to perform the type

Evaluation test:

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text: where dated references

For documents, only the version corresponding to the date applies to this document; for undated reference documents, the latest version (including all amendments) applies used in this document:

GB/T 6113:102-2018 Specifications for Radio Disturbance and Immunity Measuring Equipment and Measurement Methods Part 1-2: Radio

Coupling devices for the measurement of conducted disturbances of disturbance and immunity measuring equipment (CISPR16-1-2:2014, IDT)

Note: There is no technical difference between the referenced content of GB/T 6113:102-2018 and the referenced content of CISPR16-1-2:2006:

GB/T 6113:201-2018 Specifications for radio disturbance and immunity measuring equipment and measurement methods Part 2-1: Radio

Disturbance and immunity measurement method Conducted disturbance measurement (CISPR16-2-1:2014, IDT)

Note: There is no technical difference between the referenced content of GB/T 6113:201-2018 and the referenced content of CISPR16-2-1:2010:

GB/T 6113:203-2020 Specifications for Radio Disturbance and Immunity Measuring Equipment and Measurement Methods Part 2-3: Radio

Disturbance and immunity measurement method Radiated disturbance measurement (CISPR16-2-3:2016, IDT)

Note: There is no technical difference between the referenced content of GB/T 6113:203-2020 and the referenced content of CISPR16-2-3:2010:

GB/T 9254:1-2021 Electromagnetic compatibility of information technology equipment, multimedia equipment and receivers Part 1: Emission requirements (CISPR32:2015MOD)

Note: There is no technical difference between the referenced content of GB/T 9254:1-2021 and the referenced content of CISPR22:2008:

GB/T 17626:2-2018 Electromagnetic Compatibility Test and Measurement Technology Electrostatic Discharge Immunity Test (IEC 61000-4-2:

2008, IDT)

GB/T 17626:3-2016 Electromagnetic Compatibility Test and Measurement Technology Radio Frequency Electromagnetic Field Radiation Immunity Test (IEC 61000-

4-3:2010, IDT)

GB/T 17626:20-2014 Electromagnetic Compatibility Test and Measurement Technique Transverse Electromagnetic (TEM) Waveguide Emission and Immunity

Degree test (IEC 61000-4-20:2010, IDT)

ISO /IEC Guide98-3 Measurement Uncertainty Part 3: Guidelines for the Expression of Measurement Uncertainty (GUM:1995) [Uncer-

Note: GB/T 27418-2017 Evaluation and Expression of Measurement Uncertainty (ISO /IEC Guide98-3:2008, MOD)

ISO /IEC Guide99 International Vocabulary of Metrology Basic common concepts and related terms (VIM) [Internationalvo-

Note: JJF1001-2011 General Measurement Terms and Definitions (ISO /IEC Guide99:2007, NEQ)

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