标准摘要
[中文适用范围]: IEC 62273的这一部分给出了测量地面数字发射机性能参数的条件,并便于比较不同人员进行的测量。它包含专门选择的方法的详细信息,用于确定数字发射机最重要的性能参数。所描述的测量方法适用于有限数量的性能参数,即由于使用不同的方法和条件而可能导致模糊解释的那些参数。它们既不是限制性的也不是强制性的:可以针对每种特定情况选择测量值。如有必要,可以进行额外的测试,但这些测试应符合其他研究组、IEC 小组委员会或其他国际或适当认可的组织制定的标准。没有指定任何限制来量化可接受的性能参数范围。这些被认为已正确包含在各个发射机的技术规范中;然而,用于量化它们的术语和方式最好应在未来的 IEC 出版物中描述。本标准中描述的测量方法适用于型式认可测试。然而,它们同样可以适用于工厂或现场的验收测试测量和质量控制测试。测试信号用于测量数字和模拟地面发射机的性能参数。它们的电子特性及其相关的性能参数已被广泛了解。测试信号在通过发射机设备后进行测量,以确定其衰减是否在所需的质量标准范围内。该标准不涉及有关 MPEG 2 信号或 DVB 处理的任何细节,也不涉及数字信号处理。 [外文原描述]: IEC 62273-1:2007 gives the conditions for measuring the performance parameters of terrestrial digital transmitters and for facilitating the comparison of measurements which are carried out by different personnel. It contains details of specially selected methods for determining the most important performance parameters of digital transmitters. The measurement methods described apply to a limited number of performance parameters, i.e. those which can give rise to ambiguous interpretation due to the use of different methods and conditions. They are neither restrictive nor mandatory: measurements can be chosen for each particular case. If necessary, additional tests can be carried out but they shall comply with those standards which have been established by other study groups, subcommittees of the IEC or other international or suitably accredited organizations. This bilingual version (2012-03) corresponds to the monolingual English version, published in 2007-02.
英文名称Methods of measurement for radio transmitters - Part 1: Performance characteristics of terrestrial digital television transmitters