摘要
从空中开路信号能量的度量开始,介绍有线网接收开路信号电平的估算、测量。重点讨论了在模拟混合传输中利用当地无线电视频道传输数字电视调制信号的可行性及注意事项,并推广到利用频谱分析仪解决空中电磁波干扰数字电视的量化维护。
This article introduced the level approximate calculation and measure for the wireless sig hal on the cable network before measuring its energy. Then, the ability and notice for the A/D mix transmission by the wireless channel transmitting modulation on the signal DVB-C was discussed. The measurement and maintenance using the frequency curve analyzing instrument was extended to solve DVB-C signal being interfered by Hertzian waves on the sky.
出处
《国外电子测量技术》
2006年第3期31-33,46,共4页
Foreign Electronic Measurement Technology
关键词
开路场强
模数同频
电磁干扰频谱分析
Hertzain waves energy, same frequency of A/D, Hertzian waves interfering, frequency curve analyzing.
