在第2层的表头里并没有存活时间(ttl)的设定值。
In the Layer 2 header, there is no Time To Live (TTL) value.
使用者可以自行设定颜色、背景、标题、表头、注脚等项目，还有预览的功能，功能相当齐全。
Users can set their own color, background, title, header, footer and other projects, as well as preview function, functions are complete.
面板上的报警值小数码管是与表头上的量程相对应的，如果量程改变，则设定的数值也随着改变。
Small alarm digitron on the panel corresponds to the range on meter outfit. If the range changes, setting changes accordingly.
面板上的报警值小数码管是与表头上的量程相对应的，如果量程改变，则设定的数值也随着改变。
Small alarm digitron on the panel corresponds to the range on meter outfit. If the range changes, setting changes accordingly.
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