JJG 181-2005 English PDFUS$759.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email. JJG 181-2005: Verification Regulation of Quartz Crystal Frequency Standards Status: Obsolete JJG 181: Historical versions
Basic dataStandard ID: JJG 181-2005 (JJG181-2005)Description (Translated English): Verification Regulation of Quartz Crystal Frequency Standards Sector / Industry: Metrology & Measurement Industry Standard Classification of Chinese Standard: A57 Classification of International Standard: 17.080 Word Count Estimation: 19,199 Date of Issue: 2005-09-05 Date of Implementation: 2006-03-05 Older Standard (superseded by this standard): JJG 181-1989 Summary: This standard applies to quartz crystal frequency standard (including GPS-controlled quartz crystal frequency standard) for initial verification, testing and use of follow-up inspection. JJG 181-2005: Verification Regulation of Quartz Crystal Frequency Standards---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.Verification Regulation of Quartz Crystal Frequency Standards National Metrology Verification Regulations of the People's Republic Quartz crystal frequency standard Released on.2005-09-05 2006-03-05 implementation The General Administration of Quality Supervision, Inspection and Quarantine issued Replace JJG 181-1989 This regulation was approved by the General Administration of Quality Supervision, Inspection and Quarantine on September 5,.2005, and since.2006 It will take effect on March 5th. Focal Point. National Time Frequency Measurement Technical Committee Drafted by. China Institute of Metrology This procedure entrusts the National Time Frequency Measurement Technical Committee to explain Drafters of this procedure. Li Liming (China Institute of Metrology) Zhang Aimin (China Institute of Metrology) table of Contents1 Scope (1) 2 Overview (1) 3 Metrological performance requirements (1) 3.1 Output frequency (1) 3.2 Short-term frequency stability (1) 3.3 Single sideband phase noise (1) 3.4 Daily aging rate (1) 3.5 Frequency accuracy (1) 4 General technical requirements (2) 4.1 Appearance signs (2) 4.2 Other requirements (2) 5 measuring instrument control (2) 5.1 Verification conditions (2) 5.2 Verification items and verification methods (3) 5.3 Processing of verification results (7) 5.4 Verification cycle (7) Appendix A Relative Average Frequency Deviation Measurement Method (8) Appendix B Phase Noise Measurement Method (11) Appendix C Verification Certificate (inside page) format (12) Appendix D Verification Certificate (Inside Page) Format (GPS Controlled Quartz Crystal Frequency Standard) (13) Appendix E Verification Result Notice (inside page) format (14) Quartz crystal frequency standard verification procedure1 ScopeThis procedure applies to the first inspection of quartz crystal frequency standards (including GPS-controlled quartz crystal frequency standards) Determination, follow-up verification and in-use inspection.2 OverviewQuartz crystal frequency standard (hereinafter referred to as quartz frequency standard) refers to a high-stability quartz crystal made into a single device. Oscillator. It is mainly composed of a quartz resonator, an oscillating circuit, an isolation amplifier, an automatic gain control circuit, an oven, Precision temperature control circuit and DC stabilized power supply and other components. Quartz frequency standard has excellent short-term frequency stability and high frequency accuracy; stone controlled by GPS signal British frequency standard, its frequency accuracy can reach the level of atomic frequency standard. Quartz frequency standards are widely used in industrial production, national defense, scientific research and measurement.3 Metrological performance requirements3.1 Output frequency 1MHz, 5MHz, 10MHz 3.2 Short-term frequency stability Σy (1ms). 1×10-8~1×10-10 Σy (10ms). 1×10-9~1×10-11 Σy (100ms). 1×10-10~1×10-12 Σy(1s). 1×10-10~5×10-13 Σy(10s). 1×10-10~5×10-13 3.3 Single sideband phase noise L (10 Hz). (-100 ~ -130) dBc/Hz L (100Hz). (-120~-150)dBc/Hz L (1 kHz). (-130 ~ -160) dBc/Hz L (10 kHz). (-140 ~ -165) dBc/Hz L (100 kHz). (-140 ~ -165) dBc/Hz 3.4 Daily aging rate ±1×10-9~±1×10-11 3.5 Frequency accuracy 1×10-8~1×10-10 (1~2)×10-12 (quartz frequency standard for GPS control) ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of JJG 181-2005_English be delivered?Answer: Upon your order, we will start to translate JJG 181-2005_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of JJG 181-2005_English with my colleagues?Answer: Yes. The purchased PDF of JJG 181-2005_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. 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Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |