外部参考电压可被应用到REF引脚转移所需数量的模拟视频电平下来。
An external reference voltage can be applied to the REF pin to shift the analog video level down by the desired amount.
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。
Improving measurement accuracy of low level signal is studied using RF attenuation, resolution bandwidth, video bandwidth, and video average.
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).
根据视频处理通道中的直流电平恢复电路的性能，部分或全部的同步脉冲不会从绿色通道中移除。
Depending on the performance characteristics of the DC restoration circuitry within the video processing channel, some or all of the sync pulse may not be removed from the green channel.
现在，输入视频固定在稳定的直流电平，消隐电平则设定为已知的ADC代码。
The input video is now fixed at a stable DC level where the blank level is set to a known ADC code.
同样，由于残留的同步信号而导致的黑电平上很小的直流偏移依然能够影响颜色的平衡和各个视频通道的增益。
Again, small DCshifts in the black level caused by residual sync can disturb the colorbalance or gains of the video channels.
同样，由于残留的同步信号而导致的黑电平上很小的直流偏移依然能够影响颜色的平衡和各个视频通道的增益。
Again, small DCshifts in the black level caused by residual sync can disturb the colorbalance or gains of the video channels.
应用推荐