DTMB数字电视测试
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摘要
为了保障城乡居民听好广播、看好电视,中央于2015年开始大力投入资金在全国推广DTMB和CDR,DTMB数字电视是国家数字化覆盖工程的重要组成部分,有效解决了无线模拟技术条件下传输节目较少、质量有待提高等问题,进一步提升了广播电视公共服务水平和质量。建设任务完成后,山西覆盖区域内群众可以免费收看到中央12套电视节目(单频网中央电视台第1、2、4、10、12、13、14、15共8套和多频网中央电视台7、9、11、news共4套),以及省市县电视节目等。随着山西各区域覆盖的完成,单位承担起了DTMB最后收尾验收的测试任务,本文主要讲述DTMB测试的方法和注意事项。
In order to ensure the urban and rural residents to listen to the radio,watch television,In 2015,central began investing heavily in DTMB and CDR throughout China,DTMB digital TV is an important component of the national digital cover project,effectively solves the simulation technology under the condition of wireless transmission program is less,the problem such as quality improvement,further enhance the level and quality of public service broadcasting and television.After completion of construction tasks,covering area in shanxi people can watch 11 CCTV channels free(CCTV 1,2,4,10,12,13,14,15,a total of 8 sets of Single-frequency and CCTV 7,9,11,news,a total of 4 sets of multi-frequency network),as well as the provinces,cities and counties television program,etc.With the completion of the coverage of various regions in shanxi,the unit undertakes the test task of the final acceptance testing of DTMB.This paper mainly describes the methods and precautions of DTMB test.
In order to ensure the urban and rural residents to listen to the radio,watch television,In 2015,central began investing heavily in DTMB and CDR throughout China,DTMB digital TV is an important component of the national digital cover project,effectively solves the simulation technology under the condition of wireless transmission program is less,the problem such as quality improvement,further enhance the level and quality of public service broadcasting and television.After completion of construction tasks,covering area in shanxi people can watch 11 CCTV channels free(CCTV 1,2,4,10,12,13,14,15,a total of 8 sets of Single-frequency and CCTV 7,9,11,news,a total of 4 sets of multi-frequency network),as well as the provinces,cities and counties television program,etc.With the completion of the coverage of various regions in shanxi,the unit undertakes the test task of the final acceptance testing of DTMB.This paper mainly describes the methods and precautions of DTMB test.
引文
[1]冯景锋,周兴伟,刘骏.国家地面数字电视传输单频网覆盖测试.广播与电视技术,2008.
[2]TD-2015使用说明书.
[3]蔡新国.地面数字电视同频干扰的研究.电视技术,2009,33(10).
[4]宝盈s7000使用说明书.
[5]安捷伦的N9340A频谱分析仪使用说明书.
[2]TD-2015使用说明书.
[3]蔡新国.地面数字电视同频干扰的研究.电视技术,2009,33(10).
[4]宝盈s7000使用说明书.
[5]安捷伦的N9340A频谱分析仪使用说明书.