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JJG 175-2015: Verification Regulation of Working Standard Microphones (Electrostatic Actuator Method)
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Std ID	Version	USD	Buy	Deliver [PDF] in	Title (Description)
JJG 175-2015	English	559	Add to Cart	5 days [Need to translate]	Verification Regulation of Working Standard Microphones (Electrostatic Actuator Method)
JJG 175-2004	English	RFQ	ASK	3 days [Need to translate]	Wheel Contour Gauge for Railway Locomotive and Vehicle
JJG 175-1998	English	359	Add to Cart	3 days [Need to translate]	Verification Regulation of Measuring Condenser Microphones
JJG 175-1984	English	RFQ	ASK	3 days [Need to translate]	Measuring Condenser Microphones

JJG 175-2015: Verification Regulation of Working Standard Microphones (Electrostatic Actuator Method)

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Verification Regulation of Working Standard Microphones (Electrostatic Actuator Method) State verification procedures People's Republic of China Working standard microphones (Electrostatic actuator method) Issued on. 2015-01-30 2015-07-30 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Working standard microphones (Electrostatic actuator method) test procedures Microphones (ElectrostaticActuatorMethod) Replacing JJG 175-1998 Focal point. the National Committee of the acoustic measurement technology The main drafting units. China Institute of Metrology Zhejiang Institute of Metrology Participated in the drafting. Wuxi Jixing Automotive Parts Acoustic Technology Co., Ltd. Shenzhen Academy of Metrology and Quality Inspection The measurement procedure commissioned the National Technical Committee is responsible for interpreting acoustics The main drafters of this procedure. Xu Huan (China Institute of Metrology) Niu Feng (China Institute of Metrology) Qiu Jianmin (Zhejiang Institute of Metrology) Drafters participate. He Longbiao (China Institute of Metrology) Huang Wei (Wuxi Jixing Automotive Parts Acoustic Technology Co., Ltd.) Chen into a new (Shenzhen Academy of Metrology and Quality Inspection)

table of Contents

Introduction (Ⅲ) 1 Scope (1) 2. References (1) 3 terminology and units of measurement (1) 3.1 working standard microphones (1) 3.2 electrostatic actuator (2) 3.3 static actuator response microphone (2) 4 Overview (2) 5 metering performance requirements (2) 5.1 Sensitivity Level (2) 5.2 Sensitivity level Frequency response (2) 5.3 Dynamic range upper limit (3) 6 General Requirements (3) Flag 6.1 (3) 6.2 Factory calibration data (3) 7 control of measuring instruments (4) 7.1 test conditions (4) 7.2 Verification Project (4) 7.3 Verification Methods (5) 7.4 Verification Results Processing (8) 7.5 test cycle (8) Appendix A sound calibrator static correction (9) Appendix B acoustic calibrator cavity volume correction (10) Appendix C calibration certificate and test results of notice-page format (11) Measurement Uncertainty Appendix D Examples (13)

Introduction

Rules and regulations in accordance with the present format JJF1002-2010 "national verification procedures write rules" given prepared by. This procedure is based on the national standard GB/T 20441.4-2006 "Measurement microphones - Part 4. working standard Biography Sound Specification "(IEC 61094-4.1995, IDT) and the International Standard IEC 61094-6.2004" measuring microphone Part 6. used to determine the frequency response of the electrostatic actuator "as the basis for developing. Published JJG 1019-2007 "working standard microphones (coupling cavity Comparative Law)" and the present generation of common procedures For JJG 175-1998 "test condenser microphone." This procedure replaced the previously issued regulations as follows. --- JJG 175-1984; --- JJG 175-1998. Working standard microphone (electrostatic actuator method) test procedures

1 Scope

The order applies to meet GB/T 20441.4-2006 "Measurement microphones - Part 4 working standard microphone Specification "provides working standard microphones initial verification, subsequent verification and the use of checks. 2. References This procedure references the following documents. JJF1001-2011 common measurement terms and definitions JJF1034-2005 acoustic measurement terminology and definitions JJF1293-2011 electrostatic actuator calibration specification GB 3102.7-1993 Quantities and units of acoustics GB/T 3947-1996 Acoustics Terminology GB/T 15173-2010 electric acoustic sound calibrators GB/T 20441.3-2010 Electric Acoustic Measurement microphones - Part 3. Laboratory reciprocity technique Primary level approach standard microphones free-field calibration GB/T 20441.4-2006 Measurement microphones - Part 4. Specifications for working standard microphones IEC 61094-2 Electroacoustics Measurement microphones - Part 2. reciprocity technique laboratory standard microphone The method of the original sound pressure level calibration (Electroacoustics-Measurementmicrophones-Part 2. Pri- marymethodforpressurecalibrationoflaboratorystandardmicrophonesbythereciproc- itytechnique) IEC 61094-6.2004 Measurement microphones - Part 6. used to determine the frequency response of the electrostatic actuator (Measurementmicrophones-Part 6. Electrostaticactuatorsfordeterminationoffre- quencyresponse) For dated references, only the dated edition applies to this procedure; undated reference documents Member, the latest edition (including any amendments) applies to this procedure.

3 terminology and units of measurement

This procedure uses quantities and units specified in GB 3102.7-1993. JJF1001-2011, JJF1034-2005 and GB/T 3947-1996 and as defined in the following terms and definitions Apply to this procedure. The procedure needed references GB/T 20441.4-2006 and IEC 61094-6.2004 in the following surgery Terms and definitions. 3.1 working standard microphones workingstandardmicrophone At least one of the following methods can be calibrated microphone. Methods a) IEC 61094-2 or GB/T 20441.3-2010 prescribed; ...