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JJG 502-2017 English PDF

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Upon your order, we will start to translate JJG 502-2017_English as soon as possible, and keep you informed of the progress. The lead time is typically 4 ~ 6 working days. The lengthier the document the longer the lead time.

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Q: Should I purchase the latest version JJG 502-2017?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version JJG 502-2017 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

US$879.00 · In stock
Delivery: <= 6 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJG 502-2017: Synthesized Signal Generators
Status: Valid

JJG 502: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJG 502-2017	879	Add to Cart	6 days	Synthesized Signal Generators	Valid
JJG 502-2004	839	Add to Cart	4 days	Verification Regulation of Synthesized Signal Generators	Obsolete
JJG 502-1987	399	Add to Cart	3 days	Verification Regulation of Frequency Synthesizer	Obsolete

Similar standards

GB/T 3222.1 JJG 188 JJF 1396 JJG 802 JJG 488 JJG 238

Basic data

Standard ID: JJG 502-2017 (JJG502-2017)
Description (Translated English): Synthesized Signal Generators
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A57
Word Count Estimation: 38,341
Date of Issue: 2017-11-20
Date of Implementation: 2018-05-20
Older Standard (superseded by this standard): JJG 502-2004
Regulation (derived from): AQSIQ Notice 2017 No. 103
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine

JJG 502-2017: Synthesized Signal 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.
(Synthetic signal generator verification procedures) National Metrology Verification Regulations of the People's Republic Composite signal generator Released on.2017-11-20 2018-05-20 implementation The General Administration of Quality Supervision, Inspection and Quarantine issued Replace JJG 502-2004 Focal Point. National Time Frequency Measurement Technical Committee Main drafting unit. Beijing Radio Measurement and Testing Institute Participated in the drafting unit. China Institute of Metrology This procedure entrusts the National Time Frequency Measurement Technical Committee to explain The main drafters of this procedure. Han Hong (Beijing Radio Measurement and Testing Institute) Li Fang (Beijing Radio Measurement and Testing Institute) Liu Dan (Beijing Radio Measurement and Testing Institute) Participate in the drafters. Zhang Aimin (China Institute of Metrology) Zhang Yue (China Institute of Metrology)

Introduction (II) 1 Scope (1) 2 References (1) 3 terms and units of measurement (1) 3.1 Pulse modulation on-off ratio (1) 4 Overview (1) 5 Metrological performance requirements (2) 5.1 Internal Time Base (2) 5.2 Frequency (2) 5.3 power (2) 5.4 Attenuation (relative level) (2) 5.5 Spectrum purity (2) 5.6 Modulation (2) 5.7 Pulse Modulation (3) 5.8 Internal Modulation Generator (3) 6 General technical requirements (3) 6.1 Appearance and Accessories (3) 6.2 Working normality (3) 7 Measuring instrument control (3) 7.1 Verification conditions (4) 7.2 Verification project (6) 7.3 Verification method (7) 7.4 Processing of verification results (18) 7.5 Verification cycle (18) Appendix A Verifying the Original Record Format (19) Appendix B Verification certificate page format (24) Appendix C Format of the results of the verification result notice (29)

Introduction

This procedure is to amend JJG 502-2004. Compared with JJG 502-2004, in addition to editorial changes, The main technical changes are as follows. --- Verify the frequency range from 5kHz to 26.5GHz to 5kHz~110GHz, increase 26.5GHz~ Verification items and verification methods for various parameters of 110 GHz; --- Verification of the attenuation (relative level) verification method; --- Increase the pulse modulation on-off ratio verification; --- Increase the pulse modulation rise/fall time check; --- Increase the verification of the internal modulation generator frequency; --- Increase the verification of the amplitude of the internal modulation generator. The release of previous versions of this procedure. ---JJG 502-2004; ---JJG 502-1987. Synthetic signal generator verification procedure

1 Scope

This procedure applies to the first verification, subsequent verification and making of synthetic signal generators in the 5 kHz to 110 GHz band. Check in use.

2 reference files

This procedure refers to the following documents. JJG 180 electronic measuring instrument quartz crystal oscillator JJG 292 铷 atomic frequency standard For dated references, only the dated version applies to this Code; any undated quotation The latest version (including all amendments) applies to this procedure.

3 terms and units of measure

3.1 Pulse modulation on/off ratio pulsemodulationon-offratio Pulse modulation, the peak output power of the carrier signal during the pulse duration versus the remaining carrier in the pulse gap time The ratio of the output power of the signal. Unit. dB.

4 Overview

Synthetic signal generator, also known as frequency synthesizer or frequency synthesizer, synthetic signal generator frequency synthesis method can be divided For two, one is direct synthesis and the other is indirect synthesis. Direct synthesis method by mixing, frequency multiplication, frequency division And so on to achieve frequency conversion. Indirect synthesis generally uses frequency phase-locking technology to pass the frequency of the main source with a phase-locked loop. The phase is locked to the time base signal such that its relative frequency deviation is close to the relative frequency deviation of the internal time base. Composite signal Generators are widely used in research, production, measurement and other departments. The composite signal generator is mainly composed of time base, frequency synthesis component, main oscillator, main driver, modulation component, modulation It consists of a driver, an automatic level control (ALC) system, an output component, and a CPU. Figure 1 shows the synthesis signal generation Schematic diagram of the structure. Figure 1 Schematic diagram of the composite signal generator structure ......

Image

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJG 502-2017_English be delivered?

Answer: Upon your order, we will start to translate JJG 502-2017_English as soon as possible, and keep you informed of the progress. The lead time is typically 4 ~ 6 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJG 502-2017_English with my colleagues?

Answer: Yes. The purchased PDF of JJG 502-2017_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. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version JJG 502-2017?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version JJG 502-2017 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.