|
US$599.00 · In stock
Delivery: <= 6 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJG 802-2019: Distortion Meter Calibrators
Status: Valid JJG 802: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| JJG 802-2019 | English | 599 |
Add to Cart
|
6 days [Need to translate]
|
Distortion Meter Calibrators
| Valid |
JJG 802-2019
|
| JJG 802-1993 | English | 479 |
Add to Cart
|
3 days [Need to translate]
|
Verification Regulation of Distortion Meter Calibrator
| Obsolete |
JJG 802-1993
|
PDF similar to JJG 802-2019
Basic data | Standard ID | JJG 802-2019 (JJG802-2019) | | Description (Translated English) | Distortion Meter Calibrators | | Sector / Industry | Metrology & Measurement Industry Standard | | Classification of Chinese Standard | A57 | | Classification of International Standard | 17.080 | | Word Count Estimation | 26,285 | | Date of Issue | 2019 | | Date of Implementation | 2020-03-27 | | Issuing agency(ies) | State Administration for Market Regulation | JJG 802-2019: Distortion Meter Calibrators---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.
Distortion Meter Calibrators
National Measurement Verification Regulations of the People's Republic of China
Distortion meter calibrator
2019-09-27 release
2020-03-27 Implementation
Issued by the State Administration of Market Supervision and Administration
Verification Regulation of Distortion Meter Calibrator
Replace JJG 802-1993
Focal point. National Radio Measurement Technical Committee
Main drafting unit. Zhejiang Institute of Metrology
Chinese Academy of Metrology
Participated in the drafting unit. Shanghai Institute of Metrology and Testing Technology
No. 203, Second Institute of China Aerospace Science and Industry Corporation
The National Radio Measurement Technical Committee is entrusted with the interpretation of this regulation
The main drafters of this regulation.
Gu Xiazhen (Zhejiang Institute of Metrology)
Chen Jing (Zhejiang Institute of Metrology)
Li Hang (Chinese Academy of Metrology)
Participating drafters.
Xu Zhaohui (Shanghai Institute of Measurement and Testing Technology)
Wang Lifeng (Chinese Academy of Metrology)
Chen Xiquan (Zhejiang Institute of Metrology)
Miao Miao (No. 203, Second Institute of China Aerospace Science and Industry Corporation)
table of Contents
Introduction (Ⅱ)
1 Scope (1)
2 Overview (1)
3 Measurement performance requirements (1)
3.1 Frequency (1)
3.2 Oscillator waveform distortion (1)
3.3 Amplitude stability (1)
3.4 Maximum allowable error of harmonic partial pressure (1)
3.5 Basic error of voltmeter and maximum allowable error of frequency response (1)
4 General technical requirements (2)
5 Control of measuring instruments (2)
5.1 Verification conditions (2)
5.2 Verification items and verification methods (3)
5.3 Processing of verification results (6)
5.4 Verification period (6)
Appendix A Verification of the original record format (7)
Appendix B Format of the inner pages of the certificate of verification/certification result (13)
Appendix C Verification Certificate/Verification Result Notification Verification Results Page (14)
Appendix D. Superposition error verification method (21)
Introduction
This regulation is based on the requirements in the National Metrology Technical Specification JJF1002 "Rules for Compiling National Metrology Verification Regulations".
It is a revision of JJG 802-1993.
Compared with JJG 802-1993 "Distortion Tester Verification Device", the main technical
The changes are as follows.
--- Increase "Introduction".
--- Widened the scope of application of the regulations. the standard distortion range 0.03% ~ 100% changed to 0.003% ~ 100%.
--- Improved some measurement performance requirements. if the maximum allowable frequency error is changed from ± (3% reading 1Hz)
± (2% reading 0.1Hz); amplitude stability changed from better than 0.5%/15min to better than 0.2% /
15min; the optimal requirement of harmonic partial voltage error is changed from ± (0.5% reading 30μV) to ± (0.2% reading
Count 20μV).
--- Improved the technical requirements of the measuring standard used.
--- Increase the measurement performance of harmonic oscillator output waveform distortion and the corresponding verification method.
--- Superposition error verification method moved from the text to Appendix D.
--- Removed the overall verification method for the calibrator of the distortion meter.
--- Removed the measurement standard of passive notch filter.
The release of previous versions of this regulation.
--- JJG 802-1993.
Distortion meter calibrator
1 Scope
This regulation applies to the frequency range of 5Hz ~.200kHz, the standard distortion range of 0.003% ~ 100%
Verification of the calibrator of the distortion meter.
2 Overview
Distortion meter calibrator is a harmonic distortion designed by using fundamental wave and second harmonic method to generate standard distortion source.
Wave distortion measurement standard. It is mainly composed of independent low distortion fundamental wave oscillator, second harmonic oscillator, high precision harmonic
It consists of voltage divider, voltmeter, fundamental and harmonic superposition circuit, and low-noise power supply.
Standard instrument for measuring and calibrating distortion measuring instruments and audio analyzers.
3 Measurement performance requirements
3.1 Frequency
The fundamental frequency range. 5Hz ~.200kHz, the maximum frequency error. ± (2% reading 0.1Hz).
Harmonic frequency range. 10Hz ~ 400kHz, maximum frequency error. ± (2% reading 0.1Hz).
3.2 Oscillator waveform distortion
3.2.1 Distortion of fundamental oscillator waveform
≤1/3 Output the minimum value of standard distortion.
3.2.2 Harmonic oscillator waveform distortion
< 1.0% (10Hz≤f < 20kHz);
< 2.0% (20kHz≤f≤400kHz).
3.3 Stability of amplitude
Amplitude range. 1V or 3V.
Fundamental signal amplitude stability. ≤0.2%/15min.
Harmonic signal amplitude stability. ≤0.2%/15min.
3.4 Maximum allowable error of harmonic partial pressure
± (2% reading 30μV) (10Hz≤f < 20Hz);
± (1% reading 30μV) (20Hz≤f < 100Hz);
± (0.2% reading 20μV) (100Hz≤f < 40kHz);
± (0.5% reading 30μV) (40kHz≤f < 200kHz);
± (2.5% reading 30μV) (200kHz≤f≤400kHz).
3.5 Basic error of voltmeter and maximum allowable error of frequency response
Basic error of voltmeter. ± 0.3% (1kHz).
Maximum allowable error of frequency response. ± 0.3% (5Hz ~ 400kHz) (based on 1kHz).
|