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600-9600bit/s基带调制解调器技术要求
Requirements of 600-9600bit/s baseband MODEM
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音频脉冲编码调制特性
Characteristics of pulse code modulation for voice-frequencies
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广播报时信号
Time signal in radio broadcasting
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混凝土电视塔结构技术规范
Technical code for concrete structure of TV tower
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标准调音频率
Standard tuning frequency
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测量视频连续随机杂波用的统一加权网络
Unified weighting network for measuring video continuous random noise
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电视视频通道测试方法
Methods of measurement of television video channel
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MPEG-2信号在SDH网络中的传输技术规范
Technical specification of transport of MPEG-2 signals in SDH network
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