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JJF 1683-2017 English PDF

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JJF 1683-2017: Calibration Specification for Wow Flutter Meters
Status: Valid

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJF 1683-2017	English	599	Add to Cart	5 days [Need to translate]	Calibration Specification for Wow Flutter Meters	Valid	JJF 1683-2017

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Basic data

Standard ID	JJF 1683-2017 (JJF1683-2017)
Description (Translated English)	Calibration Specification for Wow Flutter Meters
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A56
Word Count Estimation	26,252
Date of Issue	2017-11-20
Date of Implementation	2018-05-20
Older Standard (superseded by this standard)	JJG 47-1990
Regulation (derived from)	AQSIQ Notice 2017 No. 103
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine

JJF 1683-2017: Calibration Specification for Wow Flutter Meters

---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.
(Jitter meter calibration specification) National Metrology Technical Specification of the People's Republic Shaker calibration specification Released on.2017-11-20 2018-05-20 implementation The General Administration of Quality Supervision, Inspection and Quarantine issued Shaker calibration specification Replace JJG47-1990 Focal Point. National Radio Measurement Technology Committee Drafting unit. Guangdong Institute of Metrology Guangdong Institute of Metrology, Dongguan Metrology Institute China Institute of Metrology This Code entrusts the National Radio Measurement Technical Committee to explain The main drafters of this specification. Chen Yisheng (Guangdong Institute of Metrology) Zhang Nan (Guangdong Institute of Metrology, Dongguan Metrology Institute) Wu Zhaochun (China Institute of Metrology) Participate in the drafters. Liu Wengang (Guangdong Institute of Metrology) Huang Xiaofen (Guangdong Institute of Metrology)

Introduction (II) 1 Scope (1) 2 References (1) 3 terms and units of measurement (1) 3.1 Jitter (1) 3.2 shaking (1) 3.3 Shaking (1) 4 Overview (1) 5 Measurement characteristics (1) 5.1 jitter rate (1) 5.2 Weighting curve (2) 5.3 Filter Characteristics (2) 5.4 Pulse dynamic characteristics (2) 5.5 Anti-modulation characteristics (2) 5.6 Adaptation to the center frequency (3) 5.7 Oscillator Output (3) 6 Calibration conditions (3) 6.1 Environmental conditions (3) 6.2 Measurement standards and other equipment (3) 7 Calibration items and calibration methods (3) 7.1 Appearance and normality check (4) 7.2 Dithering rate (4) 7.3 Weighting curve (5) 7.4 Filter Characteristics (6) 7.5 Pulse Dynamics (6) 7.6 Anti-modulation characteristics (6) 7.7 Adaptation to the center frequency (6) 7.8 Oscillator Output (6) 8 calibration results (7) 9 re-study interval (7) Appendix A Original Record Format (8) Appendix B Calibration Certificate Page Format (12) Appendix C Example of Measurement Uncertainty Evaluation---Measurement of Uncertainty of Measurement of Wobble Rate (16) Appendix D Method for generating jitter signal standard signal (18) Appendix E Generation of Pulse Modulation Signals (19)

Introduction

This specification is based on JJF 1071-2010 "Rules for the preparation of national metrology and calibration specifications", JJF 1059.1-2012 Compilation of Measurement Uncertainty and Representation. This specification is a revision of JJG47-1990 "Shake Instrument". Compared with JJG47-1990, the main revisions are. --- The format is in accordance with the requirements of JJF 1071-2010 "National Metrology Calibration Specification Writing Rules"; --- verification procedures changed to calibration specifications; --- Add Appendix D "How to generate the standard signal of the jitter rate", Appendix E "Generation of the pulse modulation signal" law"; ---The original verification item "sensitivity" "frequency indication" is no longer reserved; the original appendix 2, appendix 3 is specific The method of the model is no longer reserved. The previous versions of this specification were released. ---JJG47-1990. Shaker calibration specification

1 Scope

This specification applies to the calibration of a shaker with a center frequency of 3000 Hz and 3150 Hz.

2 reference files

This specification refers to the following documents. GB/T 9029-2011 recording and playback equipment shaking measurement method IEC 60386.1972/AMD1.1988 Method for measuring speed fluctuations in recording and playback equipment (Method Ofmeasurementofspeedfluctuationsinsoundrecordingandreproducingequipment) For dated references, only dated versions apply to this specification; undated quotations The latest version (including all amendments) applies to this specification.

3 terms and units of measure

The following terms and definitions apply to this specification. 3.1 Jitter flutter During recording or playback, the modulation frequency due to irregular motion of the record carrier is above 10 Hz The parasitic frequency modulation phenomenon of the signal. 3.2 shaking wow During recording or playback, the modulation frequency due to irregular motion of the record carrier is from 0.1 Hz~ 10 Hz parasitic frequency modulation of the signal. 3.3 shaking wowandflutter The parasitic frequency modulation of the recorded signal is caused by a relatively rapid change in the speed of the record carrier. Shaking includes jitter and Shake.

4 Overview

The shaker is mainly composed of an input circuit, a frequency discrimination circuit, a detection amplification circuit, a filter circuit, an indication circuit, and an oscillation. The circuit is composed of parts. The shaker is used to measure the jitter rate and belt speed error of tape recorders, film projectors, record players, and tape recorders. Special measuring instruments such as technical indicators.

5 Measurement characteristics

5.1 jitter rate 5.1.1 Input frequency range (3000 ± 150) Hz; (3150 ± 157.5) Hz. 5.1.2 Input voltage range

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