GB/T 5095.2501-2021 English PDFUS$344.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 5095.2501-2021: Electromechanical components for electronic equipment - Basic testing procedures and measuring methods - Part 25-1: Test 25a: Crosstalk ratio Status: Valid
Basic dataStandard ID: GB/T 5095.2501-2021 (GB/T5095.2501-2021)Description (Translated English): Electromechanical components for electronic equipment - Basic testing procedures and measuring methods - Part 25-1: Test 25a: Crosstalk ratio Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: L23 Word Count Estimation: 18,151 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 5095.2501-2021: Electromechanical components for electronic equipment - Basic testing procedures and measuring methods - Part 25-1: Test 25a: Crosstalk ratio---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. Electromechanical components for electronic equipment - Basic testing procedures and measuring methods - Part 25-1.Test 25a. Crosstalk ratio ICS 31.220.10 L23 National Standards of People's Republic of China Electromechanical components for electronic equipment Basic test procedures and measurement methods Part 25-1.Test 25a. Crosstalk Ratio (IEC 60512-25-1.2001,Connectorsforelectronicequipment- Released on 2021-03-09 Implemented on 2021-10-01 State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee Table of contentsForeword Ⅲ 1 General 1 1.1 Scope and purpose 1 1.2 Terms and definitions 1 2 Test facility 2 2.1 Equipment 2 2.2 Device 2 3 Test sample 3 3.1 Description 3 4 Test procedure 3 4.1 Method A (Time Domain Method) 3 4.2 Method B (frequency domain method) 5 5 Rules to be stipulated by relevant standards 6 5.1 All tests 6 5.2 Time domain method only 6 5.3 Frequency domain method only 6 5.4 Supplement the recommended device specifications according to relevant standards 6 6 Test record file 6 Appendix A (Normative Appendix) Schematic diagram of installations and equipment 8 Appendix B (informative appendix) Practical Guide 12ForewordGB/T 5095 "Basic test procedures and measurement methods for electromechanical components for electronic equipment" is divided into several parts according to the test methods. Part 25 of GB/T 5095 is a signal integrity test. The parts that have been released or planned to be released are as follows. ---Part 25-1.Test 25a. Crosstalk ratio; ---Part 25-2.Test 25b. Attenuation (insertion loss); ---Part 25-3.Test 25c. Rise time decay; ---Part 25-4.Test 25d. Transmission delay; ---Part 25-5.Test 25e. Return loss; ---Part 25-6.Test 25f. Eye diagram and jitter; ---Part 25-7.Test 25g. impedance, reflection coefficient and voltage standing wave ratio (VSWR); --- Part 25-9.Signal Integrity Test Test 25i. Alien Crosstalk. This part is part 25-1 of GB/T 5095. This section was drafted in accordance with the rules given in GB/T 1.1-2009. The translation method used in this part is equivalent to the use of IEC 60512-25-1.2001 "Connector Test and Measurement for Electronic Equipment Part 25-1" Minutes. Test 25a. Crosstalk Ratio. This section has made the following editorial changes. ---The name of the standard was revised from "Connector Test and Measurement for Electronic Equipment Part 25-1.Test 25a. Crosstalk Ratio" to "Electronics Basic test procedures and measurement methods for electromechanical components for equipment. Part 25-1.Test 25a. Crosstalk Ratio. Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying these patents. This part was proposed by the Ministry of Industry and Information Technology of the People's Republic of China. This part is under the jurisdiction of the National Standardization Technical Committee of Electromechanical Components for Electronic Equipment (SAC/TC166). Drafting organizations of this section. Sichuan Huafeng Enterprise Group Co., Ltd., China Electronics Standardization Institute. The main drafters of this section. Pang Bin, Zhu Ming, Xiao Miao, Liu Jun, Wang Qilong. Electromechanical components for electronic equipment Basic test procedures and measurement methods Part 25-1.Test 25a. Crosstalk Ratio1 General1.1 Scope and purpose This part of GB/T 5095 applies to interconnecting components, such as electrical connectors, sockets and cable assemblies. This section specifies the test procedures for measuring the amount of electromagnetic coupling between the excitation circuit and the noise suppression circuit of the interconnection assembly. Single-ended The time domain method (method A) and frequency domain method (method B) of differential transmission and its insertion and standard device method. 1.2 Terms and definitions The following terms and definitions apply to this document. 1.2.1 Excitation signal drivesignal A step waveform (in the time domain) or sine waveform (in the frequency domain). 1.2.2 Crosstalk ratio crosstalkratio The ratio of the magnitude of the signal coupled (inductive) into the squelch signal line or line pair and the signal in the excitation line or line pair. The two signals have the same The unit of voltage or current, and the ratio can be expressed in percentage or decibel (dB). 1.2.3 Near-end crosstalk ratio nearendcrosstalkratio; NEXT The crosstalk ratio calculated on the squelch line close to the emission (signal source) end of the excitation line. This is the signal amplitude of the near-end squelch line and The ratio of the signal amplitude of the near-end excitation line. 1.2.4 Farend crosstalk ratio farendcrosstalkratio; FEXT The crosstalk ratio calculated on the squelch line close to the receiving (end) end of the excitation line. This is the signal amplitude of the far-end squelch line and the near-end The ratio of the signal amplitude of the excitation line. 1.2.5 Measurement system rise time measurement system rise time Rise time measured by a device with no sample installed and with filtering (or normalization) effect. Usually, the measurement is 10%~90% The rise time within the level range. 1.2.6 Sampleenvironmentimpedance The impedance caused by the device on the sample signal wire. The impedance is determined by the transmission line, terminal resistance, attached receiver or signal source And the parasitic effects of the device. 1.2.7 Step amplitude The voltage difference between 0% and 100% level, the overshoot and undershoot can be ignored, as shown in Figure 1. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 5095.2501-2021_English be delivered?Answer: Upon your order, we will start to translate GB/T 5095.2501-2021_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 5095.2501-2021_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 5095.2501-2021_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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