GB/T 20549-2023 English PDFUS$359.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 20549-2023: Specifications and test methods of electromagnetic compatibility for digital cellular mobile communications repeater Status: Valid GB/T 20549: Historical versions
Basic dataStandard ID: GB/T 20549-2023 (GB/T20549-2023)Description (Translated English): Specifications and test methods of electromagnetic compatibility for digital cellular mobile communications repeater Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: L06 Classification of International Standard: 33.100.01 Word Count Estimation: 18,122 Date of Issue: 2023-03-17 Date of Implementation: 2023-10-01 Older Standard (superseded by this standard): GB/T 20549-2006 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 20549-2023: Specifications and test methods of electromagnetic compatibility for digital cellular mobile communications repeater---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. ICS33:100:01 CCSL06 National Standards of People's Republic of China Replacing GB/T 20549-2006 Electromagnetic Compatibility of Digital Cellular Mobile Communication Repeater Technical Requirements and Test Methods Released on 2023-03-17 2023-10-01 implementation State Administration for Market Regulation Released by the National Standardization Management Committee table of contentsPreface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions, Abbreviations 1 3:1 Terms and Definitions 1 3:2 Abbreviations 2 4 Test conditions 2 4:1 General conditions 2 4:2 Experimental setup 2 4:3 Exemption from testing frequency band 3 4:4 Narrowband response 3 5 Performance evaluation and performance criteria 3 5:1 Performance Evaluation 3 5:2 Performance criteria for immunity 4 6 Measurement/Test Item 4 6:1 Disturbance measurement item 4 6:2 Immunity test item 4 7 Disturbance limits and measurement methods 5 7:1 Harmonic currents 5 7:2 Voltage fluctuation and flicker 5 7:3 Conducted spurious disturbance at antenna port 5 7:4 Radiated spurious disturbance at chassis port 6 7:5 AC Power Port Conducted Disturbance 6 7:6 Conducted disturbance at DC power port 7 7:7 Conducted disturbance at telecommunication port 8 8 Immunity test level and test method 8 8:1 Immunity to radio frequency electromagnetic field radiation 8 8:2 Electrostatic discharge immunity 9 8:3 Electrical fast transient burst immunity 9 8:4 Surge (shock) immunity 10 8:5 Immunity to conducted disturbances induced by radio frequency fields 11 8:6 Power Frequency Magnetic Field Immunity 11 8:7 Immunity to voltage dips and short interruptions 11forewordThis document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules for Standardization Documents" drafting: This document replaces GB/T 20549-2006 "Technical Specifications and Test Methods for Electromagnetic Compatibility of Mobile Communication Repeaters", and is consistent with GB/T 20549- Compared with:2006, except for structural adjustment and editorial changes, the main technical changes are as follows: a) Added harmonic current and voltage fluctuation and flicker requirements for equipment with input current greater than 16A per phase (see 7:1 and 7:2); b) Deleted Table 3 (see Table 3 of the:2006 edition); c) Changed the ports used for harmonic current and voltage fluctuation and flicker (see Table 1, Table 1 of the:2006 edition); d) Change the detection method of the radiation spurious disturbance at the chassis port to the root mean square value (see 7:4:2, 7:4:2 of the:2006 edition); e) Changed the limit classification of AC power port conduction disturbance, and increased the conduction disturbance voltage limit of AC power port in the telecommunications center Value (see Table 3 and Table 4, Table 4 of the:2006 edition); f) Changed the limit value of conducted disturbance at the DC power supply port (see Table 5, Table 5 of the:2006 edition); g) Increase the limit value of conducted disturbance at the telecommunications port of the telecommunications center (see Table 6); h) Increase the maximum frequency of radio frequency electromagnetic field radiation immunity to 6000MHz (see 8:1:2, 8:1:2 of the:2006 edition); i) Increase the surge (shock) immunity test level of outdoor equipment (see 8:4:2); j) Deleted the provision of "preferred current clamp injection method" in the conducted disturbance immunity test induced by radio frequency field (see the:2006 edition 8:5:3): Please note that some contents of this document may refer to patents: The issuing agency of this document assumes no responsibility for identifying patents: This document is proposed and managed by the National Radio Interference Standardization Technical Committee (SAC/TC79): This document is drafted by: National Radio Monitoring Center Testing Center, National Radio Monitoring Center, China Academy of Information and Communications Technology: The main drafters of this document: Guo Yu, Liu Wei, Gong Jian, Wang Wenjian, Liu Xiaoyong, Dong Qifeng, Wang Yadong, An Shaogeng, Guo Min: The release status of previous versions of this document and the documents it replaces are as follows: ---First published as GB/T 20549-2006 in:2006; --- This is the first revision: Electromagnetic Compatibility of Digital Cellular Mobile Communication Repeater Technical Requirements and Test Methods1 ScopeThis document specifies the electromagnetic compatibility requirements and test methods for digital cellular mobile communication repeaters (including auxiliary radio frequency amplifiers), including Including test items, electromagnetic disturbance limits, immunity test levels, performance criteria and measurement methods: This document is applicable to the evaluation of GSM digital cellular mobile communication system, WCDMA digital cellular mobile communication system, TD-SCDMA Digital cellular mobile communication system, CDMA1x/cdma2000 digital cellular mobile communication system, LTETDD digital cellular mobile communication system system, LTEFDD digital cellular mobile communication system, NB-IoT digital cellular mobile communication system, 5G digital cellular mobile communication system and Electromagnetic compatibility of mobile communication repeaters using other technical systems:2 Normative referencesThe contents of the following documents constitute the essential provisions of this document through normative references in the text: Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document: GB/T 9254:1 Electromagnetic Compatibility of Information Technology Equipment, Multimedia Equipment and Receivers Part 1: Emission Requirements GB 17625:1 Electromagnetic Compatibility Limits Part 1: Harmonic Current Emission Limits (Equipment Input Current ≤ 16A per Phase) GB/T 17625:2 Electromagnetic Compatibility Limits For equipment with rated current ≤ 16A per phase and unconditional access in public low-voltage power supply Limitation of voltage changes, voltage fluctuations and flicker generated in the system GB /Z 17625:3 Electromagnetic compatibility limits for voltage waves generated by equipment with a rated current greater than 16A in a low-voltage power supply system movement and flickering restrictions GB /Z 17625:6 Electromagnetic Compatibility Limits For harmonic current generated by equipment with rated current greater than 16A in low-voltage power supply system flow limit GB/T 17626:2 Electromagnetic Compatibility Test and Measurement Technology Electrostatic Discharge Immunity Test GB/T 17626:3 Electromagnetic Compatibility Test and Measurement Technology Radio Frequency Electromagnetic Field Radiation Immunity Test GB/T 17626:4 Electromagnetic Compatibility Test and Measurement Technology Electrical Fast Transient Burst Immunity Test GB/T 17626:5 Electromagnetic Compatibility Test and Measurement Technology Surge (Shock) Immunity Test GB/T 17626:6 Electromagnetic compatibility test and measurement technology Conducted disturbance immunity induced by radio frequency field GB/T 17626:8 Electromagnetic Compatibility Test and Measurement Technology Power Frequency Magnetic Field Immunity Test GB/T 17626:11 Electromagnetic compatibility test and measurement technology Immunity test for voltage dips, short interruptions and voltage changes GB/T 17626:29 Electromagnetic compatibility test and measurement technology DC power input port voltage dips, short interruptions and voltage changes Chemical immunity test YD/T 1483 Technical Requirements and Measurement Methods for Spurious Emissions of Radio Equipment 3 Terms and definitions, abbreviations 3:1 Terms and Definitions The following terms and definitions apply to this document: ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 20549-2023_English be delivered?Answer: Upon your order, we will start to translate GB/T 20549-2023_English as soon as possible, and keep you informed of the progress. 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