在数字视频设备测量中应注意的问题  

Issues Needing Attention in the Measurement of Digital Video Equipment

作　　者：张艳丽[1] 曹淑辉 

机构地区：[1]中国电子科技集团公司第三研究所,北京100015 [2]冠捷科技(北京)有限公司,北京100016

出　　处：《电视技术》2007年第10期90-92,共3页Video Engineering

摘　　要：对具有模拟输入输出的数字视频设备,为解决测量结果不稳定性和不一致性,提出了改进的测量方法,指出了测量中应注意的问题,并具体介绍了信噪比、微分增益、微分相位及脉冲特性的测量。For equipment with analog input and output, an improved measurement method is proposed to solve the problems of instability and inconsistency in test results . Issues needing attention are pointed out, and the measurements of signal to noise ratio, differential gain, differential phase and impulse characteristics are introduced in detail.

关 键 词：颤抖信号 量化误差 信噪比 微分增益 微分相位 脉冲特性 

分 类 号：TN949.6[电子电信—信号与信息处理]