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JJF 1167-2007 English PDF

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JJF 1167-2007: Calibration Specification for Psophometers
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JJF 1167-2007English579 Add to Cart 4 days [Need to translate] Calibration Specification for Psophometers Valid JJF 1167-2007

PDF similar to JJF 1167-2007


Standard similar to JJF 1167-2007

GB/T 3222.2   GB/T 3222.1   JJG 188   JJG 1175   JJG 1166   JJG 1167   

Basic data

Standard ID JJF 1167-2007 (JJF1167-2007)
Description (Translated English) Calibration Specification for Psophometers
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A59
Classification of International Standard 17.140
Word Count Estimation 22,297
Date of Issue 2/28/2007
Date of Implementation 2007-05-28
Older Standard (superseded by this standard) JJG 483-1987
Quoted Standard GB/T 3102.5-1993; GB/T 3102.7-1993; JJG 188-2002; JJF 1001-1998; JJF 1034-2005; JJF 1059-1999; YD/T 625-1993
Regulation (derived from) AQSIQ Announcement No. 41 of 2007
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine
Summary This standard applies to noise meter calibration.

JJF 1167-2007: Calibration Specification for Psophometers

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Calibration Specification for Psophometers People's Republic of China National Metrology Technical Specifications Noise meter calibration specification Posted 2007-02-28 2007-05-28 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Noise meter calibration specification forPsop hometers Instead of JJG483-1987 This specification by the State Administration of Quality Supervision, Inspection and Quarantine, 2007 February 28 ratification and From May 28, 2007 into effect. Focal point. the National Committee of the acoustic measurement technology Drafting unit. Hubei Provincial Institute of Measurement and Testing China Testing Technology Research Institute This specification by the responsible National Technical Committee acoustic measurement interpretation Drafters of this specification. Yao Qiuping (Hubei Institute of Measurement and Testing) Hao Yu-chuan (China Testing Technology Research Institute) Wang Hong (Hubei Institute of Measurement and Testing) Zhong Jingwen (Hubei Institute of Measurement and Testing) When the root of fire (Hubei Institute of Measurement and Testing) Luo Yaqing (Hubei Institute of Measurement and Testing)

table of Contents

1 Scope (1) 2. Referenced Documents (1) 3 terminology and units of measurement (1) 4 Overview (1) 5 Metrological characteristics (1) 5.1 Zero Voltage intrinsic error (1) 5.2 Input balance (1) 5.3 input impedance (1) 5.4 measured voltage limit (2) 5.5 linearity error (2) 5.6 unweighted noise voltage frequency response measurement (2) 5.7 Frequency Response weighted noise voltage measurement time (2) 5.8 Measurement average time (3) 5.9 RMS Features (3) 5.10 peak indicating characteristics (3) 6 calibration conditions (3) Environmental conditions 6.1 (3) 6.2 Standard device and other measuring equipment (4) 7 calibration items and calibration methods (4) 7.1 calibration items (4) 7.2 Calibration method (4) 8 calibration results expression (7) 8.1 Calibration Data Processing (7) 8.2 calibration certificate (8) 8.3 calibration measurement uncertainty (8) 9 Recalibration interval (8) Appendix A calibration certificate (9) Appendix B Uncertainty Evaluation Examples (12) Noise meter calibration specification

1 Scope

This instruction applies to noise meter (also known as noise voltmeter, noise tester) calibration.

2 Citations

This specification references the following documents GB/T 3102.5-1993 "electricity and magnetism Quantities and units" GB/T 3102.7-1993 "acoustic volume and unit" JJG188-2002 "Sound Level Meter" JJF 1001-1998 "common measurement terms and definitions" JJF 1034-2005 "Acoustic measurement terminology and definitions" JJF 1059-1999 "Evaluation and Expression of Uncertainty in Measurement" YD/T 625-1993 "noise meter technical conditions" When using this specification it should be noted that using the currently valid version of the documents cited.

3 terminology and units of measurement

This specification uses JJF 1001-1998, JJF 1034-2005 and JJG188-2002 regarding terms and definitions. This specification uses GB/T 3102.5-1993 Quantities and units and GB/T 3102.7-1993 prescribed.

4 Overview

Noise meter is used to measure the acoustic communication equipment, broadcast equipment and transmission line frequency interference noise generated by the instrument Is it prescribed weighted and time-weighted measurement of the size of audio interference noise voltage. It mainly consists of an input circuit, the amount of Programmable controller, amplifiers, weighted network, detectors, self-calibration signal source, and power indicator and other components.

5 Metrological characteristics

5.1 Zero Voltage inherent error When using the 800Hz (or 1000Hz) 0dB (Input impedance 600Ω, 0dB to 0.775V) input signal, Noise meter indicates voltage and zero voltage difference. Zero voltage inherent error is better than ± 0.3dB① 5.2 Input balance When the noise meter to its balanced input common-mode input signal rejection, which indicates noise noise voltage is measured Resistance to common mode interference. Enter the degree of balance is generally greater than 70dB. 5.3 Input impedance Noise meter input impedance is measured at the input impedance, low input impedance nominal value is usually 600Ω, ① chapter "general" indicates mentioned performance measurement indicators for reference only.

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