Improving measurement accuracy of low level signal is studied using RF attenuation, resolution bandwidth, video bandwidth, and video average.
研究了利用频谱仪射频衰减、分辨带宽、视频带宽和视频平均的方法，提高和改善低电平信号的测量精度。
The article analyzed the problems in China railways' level crossing signal and explored their solutions. And a intelligent level crossing signal and video monitoring system were introduced in details.
分析了我国铁路既有道口信号存在的若干问题，探讨了解决途径。较详细地介绍了一种智能化道口信号及图像监录系统。
The system also comprises ambient light level sensing, video signal switching technology and power conversion circuitry.
该系统还包括环境光强度感觉、视频信号交换技术及能量转换电路。
And a intelligent level crossing signal and video monitoring system were introduced in details.
较详细地介绍了一种智能化道口信号及图像监录系统。
Based on that, this thesis illustrates one uncompressed video transmission system, which can satisfy the demand of the broadcast level transmission of the TV program signal source.
由此出发，本文研制了一个非压缩视频传输系统，该系统可以满足电视节目源信号高质量传输要求。
As part of the video signal, bi-level sync introduces an unwanted DC component (Figure 2).
作为视频信号的一部分，双电平同步包含了一部分并不需要的直流分量(如图2)。
As part of the video signal, bi-level sync introduces an unwanted DC component (Figure 2).
作为视频信号的一部分，双电平同步包含了一部分并不需要的直流分量(如图2)。
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