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GB 13837-2012 PDF English (GB 13837-2003: Older version)Search result: GB 13837-2012 (GB 13837-2003 Older version)
GB13837-2012: PDF in EnglishGB 13837-2012 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 33.100.01 L 06 Replacing GB 13837-2003 Sound and television broadcast receivers and associated equipment - Radio disturbance characteristics - Limits and methods of measurement (IEC/CISPR 13:2009, MOD) Changed to recommended standard according to the Announcement No.7 in 2017 by the Standardization Administration of China ISSUED ON: DECEMBER 31, 2012 IMPLEMENTED ON: JULY 01, 2013 Issued by: General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration of PRC. Table of Contents Foreword ... 4 1 Scope ... 5 2 Normative references ... 6 3 Terms, definitions, abbreviations ... 7 3.1 Terms and definitions ... 7 3.2 Abbreviations ... 8 4 Disturbance limits ... 9 4.1 Overview ... 9 4.2 Disturbance voltage at the power supply terminal ... 9 4.3 Disturbance voltage at the antenna ... 10 4.4 Useful signal and disturbance signal voltage at RF output of equipment with integrated or additional RF image modulator ... 11 4.5 Disturbance power ... 11 4.6 Radiated disturbance ... 12 4.7 Radiated power ... 12 5 Measurement method ... 13 5.1 Overview ... 13 5.2 Test signal ... 13 5.3 Disturbance voltage at the power supply terminal in the frequency range of 150 kHz ~ 30 MHz ... 15 5.4 Measurement of disturbance voltage at the antenna end of receivers and related equipment with RF input in the frequency range of 30 MHz ~ 2.15 GHz 18 5.5 Measurement of useful signal and disturbance voltage at the RF output of relevant equipment with RF image modulator in the frequency range of 30 MHz ~ 2.15 GHz ... 19 5.6 Measurement of disturbance power of related equipment (except video recorders) in the frequency range of 30 MHz ~ 1 GHz ... 20 5.7 Measurement of radiation field strength by 3m method in the frequency range of 30 MHz ~ 1 GHz ... 22 5.8 Radiation measurement in the frequency range of 1 GHz ~ 18 GHz ... 26 5.9 Measurement of local frequency power at the input of outdoor unit ... 29 6 Explanation of CISPR radio disturbance limit... 29 6.1 Standard compliance... 29 6.2 Significance of limits ... 29 6.3 Compliance limit values on a statistical basis ... 29 Appendix A (Normative) Digital signal broadcasting receiver ... 37 Appendix B (Informative) Basic information of digital television useful signals) ... 42 Appendix C (Informative) Settings of flat-panel TV receiver ... 44 Sound and television broadcast receivers and associated equipment - Radio disturbance characteristics - Limits and methods of measurement 1 Scope This standard specifies the measurement methods for sound and television receivers and related equipment, as well as the limits for the control of harassment from such equipment. For multifunctional equipment, it shall meet the requirements of this standard and/or other standards, see 4.1. This standard is applicable to the electromagnetic energy generated by the sound of broadcasting and similar transmissions and television receivers and related equipment; the frequency range is 9 kHz ~ 400 GHz. Frequencies without specified limits do not need to be measured. The receiving system used for collective reception, especially the front end of the cable distribution system (shared antenna TV, CATV) and the shared receiving system (main antenna TV, MATV) belong to the category of GB 13836. See Appendix A and Appendix B for the requirements of broadcast receivers for receiving digital signals. It does not include information technology equipment (ITE), even if it is connected to a television receiver. The telecommunications port connecting the broadcast receiver to the telecommunications network belongs to the scope of GB 9254. In addition, when the telecommunication port has a broadcast receiving function, the broadcast receiving function that can be independent of the telecommunication function shall be measured separately, meanwhile the telecommunication function does not work during the measurement. The PC tuner card shall be measured in accordance with the corresponding clauses of this standard. 2 Normative references The following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) are applicable to this standard. GB/T 3174 PAL-D system TV broadcasting technical specification GB/T 4365 Electrotechnical terminology - Electromagnetic compatibility (GB/T 4365-2003, IEC 60050 (161):1990, IDT) GB 4824-2004 Industrial, scientific and medical (ISM) radio-frequency equipment - Electromagnetic disturbance characteristics - Limits and methods of measurement (IEC/CISPR 11:2003, IDT) GB/T 6113.101 Specification for radio disturbance and immunity measuring apparatus and methods - Part 1-1: Radio disturbance and immunity measuring apparatus - Measuring apparatus (GB/T 6113.101-2008, IEC/CISPR 16-1-1: 2006, IDT) GB/T 6113.102 Specification for radio disturbance and immunity measuring apparatus and methods - Part 1-2: Radio disturbance and immunity measuring apparatus - Ancillary equipment - Conducted disturbance (GB/T 6113.102-2008, IEC/CISPR 16-1- 2:2006, IDT) GB/T 6113.103 Specification for radio disturbance and immunity measuring apparatus and methods - Part 1-3: Radio disturbance and immunity measuring apparatus - Ancillary equipment - Disturbances power (GB/T 6113.103-2008, IEC/CISPR 16-1- 3:2004, IDT) GB/T 6113.104 Specification for radio disturbance and immunity measuring apparatus and methods - Part 1-4: Radio disturbance and immunity measuring apparatus - Ancillary equipment - Radiated disturbance (GB/T 6113.104-2008, IEC/CISPR 16-1- 4:2005, IDT) GB/T 6113.202 Specification for radio disturbance and immunity measuring apparatus and methods - Part 2-2: Methods of measurement of disturbances and immunity - Measurement of disturbance power measurement (GB/T 6113.202-2008, IEC/CISPR 16-2-2 :2004, IDT) GB/Z 6113.403 Specification for radio disturbance and immunity measuring apparatus and methods - Part 4-3: Uncertainties statistics and limit modelling - Statistical considerations in the determination of EMC compliance of bulk products (GB/Z 6113.403-2007, IEC/CISPR 16-4-3:2004, IDT) GB 9254 Information technology equipment - Radio disturbance characteristics - Limits and methods of measurement (GB 9254-2008, IEC/CISPR 22:2006, IDT) GB 13836 Distribution systems for television and sound signals - Part 2: Electromagnetic compatibility of equipment (GB 13836-2000, IEC 60728- 2:1997, NEQ) GB/T 17309.1-1998 Methods of measurement on receivers for television broadcast transmissions Part 1: General considerations Electrical measurements at radio and video frequencies and measurements on display performance (idt IEC 60107-1:1995) SJ/T 11348-2006 Methods of measurement for digital television flat panel displays 3 Terms, definitions, abbreviations 3.1 Terms and definitions The terms and definitions as defined in GB/T 4365 as well as the following terms and definitions apply to this document. 3.1.1 Sound broadcast receivers The equipment used for receiving terrestrial, cable and satellite transmission of sound broadcasting and similar services, the input signal of which may be analog or digital. 3.1.2 Television receivers The equipment used for receiving terrestrial, cable and satellite television broadcasting and similar services, the input signal of which can be analog or digital. 3.1.3 Associated equipment A device directly connected to a sound or television receiver, or a device capable of generating or reproducing audio or video information. ITE: Information technology equipment ITU-R: International telecommunication union-radio LW, MW and SW: Long wave, medium wave and short wave MATV: Main antenna TV PC: Personal computer RF: Radio frequency 4 Disturbance limits 4.1 Overview When the method given in Chapter 5 is used for measurement, the RF disturbance level shall not be greater than the limit specified in 4.2 ~ 4.7. At the boundaries of the two frequency ranges overlap, the lower limit shall be used. For mass-produced equipment, at least 80% of the products meet the limit requirements with 80% confidence (see Chapter 6). At the same time, the multi-function equipment that belongs to the requirements of different clauses of this standard and/or other standards can realize each function without changing the inside of the equipment, the test shall be carried out independently under each function. When each function of the equipment meets the requirements of the corresponding clauses/standards, the equipment is considered to meet the requirements of all clauses/standards. For equipment that cannot achieve independent operation of each function during the test, or the independent operation of a special function will cause the basic functions of the equipment to be impossible, at this time, if the basic operating functions necessary for the equipment meet the requirements of the corresponding clauses/standards, the equipment is considered to meet the requirements. The RMS-average limit is newly introduced. In case of dispute, the quasi- peak/quasi-peak and average measurement results shall prevail. 4.2 Disturbance voltage at the power supply terminal It shall be measured according to 5.3. The limits are as shown in Table 1. frequency shall meet the requirements of the corresponding system. For teletext, preferably use several rows of digital graphics that fill the screen, as shown in Figure 2. If there is no such graphic, the main index page of the national teletext broadcasting service shall be used as the test figure when measuring, which shall be indicated in the measurement result. For radio receivers, the standard test si.......Source: https://www.ChineseStandard.net/PDF.aspx/GB13837-2012 |