机顶盒硬件测试指南

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1、目录1概述.................................................................................................................................42视频入网指标测试............................................................................................................4

2、2.1CVBS视频入网指标测试.................................................................................................42.1.1幅频特性....................................................................................................................42.1.2输出幅度和同步幅度

3、...................................................................................................52.1.3色度/亮度增益不等和色度/亮度延时不等....................................................................52.1.4K系数....................................................

4、....................................................................52.1.5亮度非线性.................................................................................................................52.1.6视频信杂比（加权）..............................................

5、.....................................................52.1.7微分增益和微分相位...................................................................................................62.1.8色同步副载波频率测试......................................................................

6、.........................62.1.9副载波对水平同步脉冲的相位偏移（SCH）测试.......................................................62.2S_Video视频入网指标测试..............................................................................................62.3YCbCr分量指标测试.................

7、......................................................................................62.3.1蝴蝶结测试（Bowtie）...............................................................................................72.3.2通道延时（ChannelDelay）.............................

8、.........................................................72.3.3K系数测量（K-FactorMeasurement）......................................................................82.3.4水平测试（LevelMeterMeasurement）.....................................