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