快三彩票
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电视信号发生器技术参数电视标准：PAL—D制式行 频：15625±1% 帧 频：50HZ彩色◥副载波：.75±100HZ输出图案：网格、点阵、十字、棋盘格、彩条、红绿单色面、四矢量、圆、单一点及特殊矢量等、图象可叠加射频信号：1～56频道，38MHZ中频视频调制：AM负调制伴音信号：6.5MHZ、FM调制、电子音乐伴音视频输出：0～2V可调工作电压：AC220V±10%外形尺寸：280×240×90MM重 量：2.5KG
