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JJF 1805-2020 English PDF

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JJF 1805-2020: Calibration Specification for Frequency and Phase Offset Generators
Status: Valid

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJF 1805-2020	English	719	Add to Cart	5 days [Need to translate]	Calibration Specification for Frequency and Phase Offset Generators	Valid	JJF 1805-2020

PDF similar to JJF 1805-2020

Standard similar to JJF 1805-2020

GB/T 3222.1 JJF 1234 JJF 1396 JJF 1901 JJF 1900 JJF 1808

Basic data

Standard ID	JJF 1805-2020 (JJF1805-2020)
Description (Translated English)	Calibration Specification for Frequency and Phase Offset Generators
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A57
Classification of International Standard	17.080
Word Count Estimation	33,398
Date of Issue	2020
Date of Implementation	2020-04-17
Issuing agency(ies)	State Administration for Market Regulation

JJF 1805-2020: Calibration Specification for Frequency and Phase Offset Generators

---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 Phase Micro-Jumper) National Metrology Technical Specifications of the People's Republic of China Calibration specification for phase micro jumper 2020-01-17 released 2020-04-17 implementation Issued by the State Administration for Market Regulation Calibration specification for phase micro jumper Focal point. National Technical Committee of Time and Frequency Measurement Main drafting unit. China Institute of Metrology Participated in the drafting. Beijing Institute of Radio Measurement and Testing Technology Shanghai Institute of Metrology and Testing Technology This specification entrusts the National Time and Frequency Measurement Technical Committee to be responsible for interpretation The main drafters of this specification. Yang Zhiqiang (China Institute of Metrology) Zhang Aimin (China Institute of Metrology) Liang Kun (China Institute of Metrology) Participating drafters. Yang Jun (Beijing Institute of Radio Measurement and Testing Technology) Dong Lian (Shanghai Institute of Metrology and Testing Technology)

Introduction (Ⅱ) 1 scope (1) 2 Reference documents (1) 3 Overview (1) 4 Measurement characteristics (1) 5 Calibration conditions (2) 5.1 Environmental conditions (2) 5.2 Measurement standards and other equipment (2) 6 Calibration items and calibration methods (4) 6.1 Calibration items (4) 6.2 Calibration method (4) 7 Expression of calibration results (10) 8 Recalibration interval (10) Appendix A Original Record Format (11) Appendix B Format of Calibration Certificate (Inner Page) (17) Appendix C Example of Calibration Uncertainty Evaluation (21)

Introduction

This specification is based on JJF 1071-2010 "Rules for the Compilation of National Metrology and Calibration Specifications" and JJF 1059.1-2012 "Evaluation and Expression of Measurement Uncertainty" was compiled. This specification is released for the first time. Calibration specification for phase micro jumper

1 Scope

This specification applies to the calibration of phase micro-hops with input frequencies of 5MHz, 10MHz, and 100MHz.

2 Reference documents

This specification refers to the following documents. JJF 1001 General measurement terms and definitions For dated reference documents, only the dated version applies to this specification; for undated references The latest version (including all amendments) is applicable to this specification.

3 overview

The phase micro jumper is a kind of locking the input frequency signal f0, adjusting it within a certain range and outputting it. A device that outputs time-frequency signals. When working, the local crystal oscillator is locked to the external input frequency signal f0. When the precision adjustment Δf is applied to the loop, the adjusted time and frequency signals are generated. Adjusted frequency The signal generates a local 1PPS signal through frequency division, and the external 1PPS signal can initially synchronize the local output 1PPS. By adjusting the phase of the frequency signal, the purpose of precisely adjusting the phase of 1PPS is achieved. The working principle of the phase micro jumper is shown in the figure 1 shown. Phase micro-steps are widely used in time and frequency control, time keeping, satellite navigation and metering. Figure 1 Working principle diagram of phase micro-hop

4 Measurement characteristics

4.1 Input power range. (7~15)dBm. 4.2 Output power. (10~17)dBm. 4.3 Harmonic distortion. ≤-40dBc.

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