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JJF 1677-2017 English PDF

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US$599.00 · In stock
Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJF 1677-2017: Calibration Specification for Frequency Distribution Amplifiers
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJF 1677-2017	599	Add to Cart	5 days	Calibration Specification for Frequency Distribution Amplifiers	Valid

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Basic data

Standard ID: JJF 1677-2017 (JJF1677-2017)
Description (Translated English): Calibration Specification for Frequency Distribution Amplifiers
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A57
Word Count Estimation: 26,216
Date of Issue: 2017-11-20
Date of Implementation: 2018-02-20
Regulation (derived from): AQSIQ Notice 2017 No. 103
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine

JJF 1677-2017: Calibration Specification for Frequency Distribution Amplifiers

---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 Frequency Distribution Amplifiers People's Republic of China National Metrology Technical Specifications Frequency Distribution Amplifier Calibration Specifications Published on.2017-11-20 2018-02-20 Implementation The State Administration of Quality Supervision, Inspection and Quarantine issued Frequency Distribution Amplifier Calibration Specifications Key units. National Time Frequency Measurement Technical Committee Drafted by. China Academy of Metrology Participated in the drafting. Shijiazhuang Digital Equipment Co., Ltd. This specification entrusts the National Time Frequency Measurement Technical Committee to explain The main drafters of this specification. Xu Qinghua (China Institute of Metrology) Zhang Aimin (China Institute of Metrology) Participating drafters. Feng Wei (Shijiazhuang Digital Equipment Co., Ltd.) Zhang Yue (China Institute of Metrology)

Introduction (II) 1 Scope (1) 2 Terms and units of measurement (1) 3 Overview (1) 4 Metrological characteristics (1) 5 Calibration Conditions (2) 6 Calibration Items and Calibration Methods (3) 7 Expression of Calibration Results (7) 8 Re-school interval (8) Appendix A (9) Appendix B (13) Appendix C (16)

Introduction

This specification is based on JJF 1071-2010 "Rules for the preparation of national metrological calibration specifications", JJF 1001-2011 Using Measurement Terms and Definitions" and JJF 1059.1-2012 Evaluation and Expression of Measurement Uncertainty. This specification is the first release. Frequency Distribution Amplifier Calibration Specifications

1 Scope

This specification applies to the calibration of frequency distribution amplifiers with a frequency range of (0.1 to 100) MHz.

2 Terms and units of measure

2.1 isolation isolation Leakage of radio frequency signals loaded into the output port of the frequency-sharing amplifier to power of other output ports or input ports The ratio of the input power to the loaded RF signal in dB. 2.2 Crosstalk crosstalk For multi-input multi-output frequency distribution amplifiers, when there is a signal input at a certain set of distribution amplification inputs In working condition, the output power of other distribution amplifiers with no input signal inactive is in operation The ratio of the output power of the distribution amplifier of the state, in dB.

3 Overview

Frequency distribution amplifier, also known as radio frequency distribution amplifier, is a signal from one channel (or multiplex) input, from multiple output And maintain the original signal characteristics of the instrument. The input multi-channel output frequency distribution amplifier principle is shown in Figure 1. enter The signal is converted into multiple outputs by the power divider and low noise amplifier. Frequency distribution amplifiers are widely used in communications, when Inter-frequency measurement and other fields. Figure 1 Frequency distribution amplifier block diagram

4 Metrological characteristics

4.1 Input and output frequency. Continuous frequency distribution amplifier is generally (0.1~100)MHz; fixed frequency allocation The amplifier is generally 5MHz, 10MHz, 100MHz and so on. 4.2 Gain (or output power). (-0.5~0.5)dB (For frequency distribution of the output power is fixed The output power is generally 13dBm). ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJF 1677-2017_English be delivered?

Answer: Upon your order, we will start to translate JJF 1677-2017_English as soon as possible, and keep you informed of the progress. The lead time is typically 3 ~ 5 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJF 1677-2017_English with my colleagues?

Answer: Yes. The purchased PDF of JJF 1677-2017_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.