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根据中国国家标准GB/T 4961-1999《广播报时信号》制作的中国大陆广播电台常用的报时信号,于每小时的59分55秒开始播放。每一响间隔1s(±0.001s),前5响频率800Hz(±0.8Hz),每一响持续0.25s(±0.001s);最后一响于整点时发出,频率1600Hz(±1.6Hz),持续0.5s(±0.001s)。




  1. 电信
  2. 电力
  3. 金融
  4. 计算机系统
  5. 网络
  6. 分布式数据采集
  7. 国防
  8. 电子政务
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