GB/T 12498-2012 English PDFUS$439.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 12498-2012: Generic specification of rubidium frequency standard Status: Valid GB/T 12498: Historical versions
Basic dataStandard ID: GB/T 12498-2012 (GB/T12498-2012)Description (Translated English): Generic specification of rubidium frequency standard Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: L85 Classification of International Standard: 17.220 Word Count Estimation: 19,184 Older Standard (superseded by this standard): GB/T 12498-1990; GB/T 12499-1990 Quoted Standard: GB/T 191-2008; GB 1002-2008; GB/T 3873-1983; GB/T 6587-2012; GB/T 6592; GB/T 11463-1989 Regulation (derived from): National Standards Bulletin No. 41 of 2012 Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China Summary: This standard specifies the rubidium atomic frequency standard terminology, definitions, classifications, technical requirements, testing and test methods, inspection rules and signs, packaging, transportation and storage requirements. This standard appli GB/T 12498-2012: Generic specification of rubidium frequency standard---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.ICS17.220 L85 National Standards of People's Republic of China Replacing GB/T 12498-1990, GB/T 12499-1990 Rubidium atomic frequency standard universal norms Issued on. 2013-06-01 2012-12-31 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released Table of ContentsPreface Ⅰ 1 Scope 1 2 Normative references 1 3 Terms and definitions 4 Product Category 2 5 2 Technical Requirements 6 Test and Test Methods 5 7 quality assurance provisions 11 8 signs, packaging, transportation and storage 14 9 Annex 15 random files and prepareForewordThis standard rule according to GB/T 1.1-2009 given draft. This standard replaces GB/T 12498-1990 "rubidium atomic frequency standard general technical conditions", GB/T 12499-1990 "rubidium atomic frequency Standard Test Method. " This standard and GB/T 12498-1990, GB/T 12499-1990 compared to the main changes are as follows. --- Delete references to normative documents repealed standards; --- Increasing the normative references in standards currently in force; --- Modify the terms and definitions related content; --- Revised Categories related content; --- Modify the technical requirements of the relevant content; --- Revised test methods related content. The standard proposed by the Ministry of Industry and Information Technology of the People's Republic of China. This standard by the National Standardization Technical Committee Electronic Measuring Instruments (SAC/TC153) centralized. This standard was drafted. Beijing Dahua Radio Instrument Factory. The main drafters. Zhang Jing true force Jia Wei, Guo first, Li Xuan Min. This standard superseded standard previously issued as follows. --- GB/T 12498-1990; --- GB/T 12499-1990. Rubidium atomic frequency standard universal norms1 ScopeThis standard specifies the terms rubidium atomic frequency standard (hereinafter referred to as "rubidium frequency standard"), definitions, classifications, technical requirements, testing and test side Method, inspection rules and signs, packaging, transportation and storage requirements. This standard applies to all models rubidium frequency standard product is the main technical basis for product development, design, production and acceptance testing. Develop each Model rubidium frequency standard product standard shall comply with the requirements of this standard.2 Normative referencesThe following documents for the application of this document is essential For dated references, only the dated edition applies to this article Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 191-2008 packaging Pictorial marking GB 1002-2008 household and similar purposes single-phase plug and socket type, basic parameters and dimensions GB/T 3873-1983 Telecommunication Equipment for packaging technology GB/T 6587-2012 General specification for electronic measuring instruments GB/T 6592 Electrical and electronic measurement equipment - Expression of performance GB/T 11463-1989 electronic measuring instrument reliability test3 Terms and DefinitionsThe following terms and definitions apply to this document. 3.1 Rubidium atomic frequency standards rubidiumfrequencystandard A passive atomic frequency standards, rubidium isotopes between R87b \u200b\u200batom ground state hyperfine energy level transition frequency (6834682608Hz) to control the output frequency of the crystal oscillator, to obtain high stability frequency source frequency. 3.2 Frequency deviation frequencyoffset The actual value of the frequency difference between the nominal value of the frequency, usually with relative values \u200b\u200bsee formula (1). y = fx-f0f0 (1) Where. y --- frequency deviation; f0 --- nominal frequency value; fx --- frequency found. 3.3 Frequency accuracy frequencyaccuracy The maximum range of frequency deviation. Indicates how close to the nominal value of frequency actual value expressed in numerical quantitation without sign. ...... |
