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| QB/T 4251-2024 Primary-secondary quartz clocks for ships (English Version) |
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Detail of QB/T 4251-2024
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Introduction of QB/T 4251-2024
本文件规定了船舶用石英子母钟的工作温度、电压范围、工作可靠性，描述了相应的试验方法，规定了检验规则及标志、包装、运输、贮存和安装，同时给出了便于技术规定的分类和电气参数本文件适用于由母钟通过有线连接与多个子钟组成的子母钟的生产、检验、销售和安装，船舶使用的其他单体石英钟的生产、检验、销售和安装参照使用
Contents of QB/T 4251-2024