JJF 1395-2013 English PDF

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JJF 1395-2013: Calibration Specification for Audio Analyzer
Status: Valid

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JJF 1395-2013	629	Add to Cart	5 days	Calibration Specification for Audio Analyzer	Valid

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Basic data

Standard ID: JJF 1395-2013 (JJF1395-2013)
Description (Translated English): Calibration Specification for Audio Analyzer
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A56
Classification of International Standard: 17.220
Word Count Estimation: 27,265
Quoted Standard: JJF 1071-2010
Regulation (derived from): ?State AQSIQ Announcement 2013 No. 28;
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine
Summary: This standard applies to the frequency range of 10 Hz ~ 200 kHz of new manufacturing, audio analyzer calibration and repair after use.

JJF 1395-2013: Calibration Specification for Audio Analyzer

---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 Audio Analyzer People's Republic of China National Metrology Technical Specifications Audio Analyzer Calibration Specification Issued on. 2013-02-16 2013-05-16 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Audio Analyzer Calibration Specification AudioAnaly zer Focal point. the National Radio Technical Commission metering Drafting. Shanghai Institute of Measurement and Testing China Institute of Metrology China Electronics Standardization Institute This specification commissioned the National Radio Technical Commission responsible for the interpretation of measurement The main drafters of this specification. Xu Zhaohui (Shanghai Institute of Measurement and Testing) Li Hang (China Institute of Metrology) Hu Juping (China Electronics Standardization Institute) Drafters participate. Pan Jie (Shanghai Institute of Measurement and Testing) Lu Fumin (Shanghai Institute of Measurement and Testing)

table of Contents

Introduction (Ⅱ) 1 Scope (1) 2. References (1) 3 Overview (1) 4 Metrological characteristics (1) 4.1 audio signal analyzing section (1) 4.2 audio signal generating portion (1) Calibration Condition 5 (2) 5.1 environmental conditions (2) 5.2 Calibration Equipment (2) 6 calibration items and calibration methods (3) 6.1 appearance and working properly check (3) 6.2 audio calibration signal analysis section (3) 6.3 Calibration section of the audio signal generation (6) 7 Calibration Results The expression (8) 8 Recalibration interval (9) Appendix A calibration record format (10) Appendix B Calibration Certificate-page format (14) Appendix C Evaluation of Uncertainty Example (18)

Introduction

The calibration specification based JJF 1071-2010 "National Calibration Specifications writing rules" establishment. The specification for the 10Hz ~ 200kHz audio analyzer calibration method, respectively, from the audio signal analysis section and Performed for a predetermined portion of the audio signal occurs in two ways. Audio signal analysis section of the calibration include. frequency measurement, AC voltage measuring intrinsic noise, measuring AC voltage, AC voltage measurement frequency of the additional error distortion measure residual loss True distortion measure; the audio signal generating portion of the calibration include. output frequency, output voltage, output voltage Frequency response, distortion sine wave output. And gives the AC voltage measurement in the appendix, distortion measure other items Objective evaluation of measurement uncertainty method example. This specification is the first release. Audio Analyzer Calibration Specification

1 Scope

This calibration new specification applies to the frequency range of 10Hz ~ 200kHz in manufacturing, use and repair of audio post Analyzer calibration. 2. References This specification references the following documents. JJF 1071-2010 National Calibration Specifications writing rules For dated references, only the dated edition applies to this specification; undated reference documents Member, the latest edition (including any amendments) applies to this specification.

3 Overview

Audio analyzer commonly used in audio amplifiers, filters, cell phone transmission characteristics such as performance testing. Audio Analyzer Section and audio signal analysis components typically occurs by the audio signal. Audio signal generation portion may object to be measured mention For 1 to 2 road test excitation signal; an audio signal analysis section for receiving the object to be measured output of the audio signal, and Its comprehensive measurement of total harmonic distortion, voltage amplitude, frequency and other parameters analyzed. Audio analyzer audio signal generating portion of the output signal frequency is usually in the range 10Hz ~ 200kHz, sound Frequency signal analysis section generally measure the frequency, voltage, total harmonic distortion and other parameters within the frequency range of the signal.

4 Metrological characteristics

4.1 audio signal analysis section 4.1.1 Frequency Measurement 4.1.1.1 Measuring range. 10Hz ~ 200kHz; 4.1.1.2 The maximum permissible error. ± (0.005% ~ 0.3%). 4.1.2 AC voltage measurement 4.1.2.1 Measuring range. 1mV ~ 300V (10Hz ~ 200kHz); 4.1.2.2 The maximum permissible error. ± (0.5% ~ 5%) (1kHz); 4.1.2.3 additional error frequency (1kHz reference). ± (2% ~ 10%) (10Hz ~ 200kHz); 4.1.3 Voltage measurement inherent noise. ≤50μV (20kHzBW). 4.1.4 Distortion Measurement 4.1.4.1 Measuring range. (0.01% ~ 100%) (10Hz ~ 200kHz); 4.1.4.2 The maximum permissible error. ± (5% ~ 20%). 4.1.5 distortion measure residual distortion. ≤ (0.003% ~ 0.05%) (10Hz ~ 200kHz). 4.2 audio signal generation section 4.2.1 Output frequency ......

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