请教大神怎么理解UL294第14章节关于天线链接端子接地的要求？

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如题，请教大神怎么理解UL294第14章节关于天线链接端子接地的要求？怎么测试？谢谢
14.2 Each terminal provided for the connection of an external antenna shall be conductively connected to the supply circuit grounded conductor. The conductive connection shall have a maximum resistance of 5.2 megohms, a minimum wattage rating of 1/2 watt, and shall be effective with the power switch in either the on or off position.
Exception: The conductive connection need not be provided if:
a) Such a connection is established in the event of electrical breakdown of the antenna isolating means;
, c7 H" R# d& r" m/ D0 _4 Yb) The breakdown does not result in a risk of electric shock; and
( ?% Y0 h" P" x( b& n# f8 g4 ec) In a construction using an isolating power transformer, the resistance of the conductive connection between the supply circuit and chassis does not exceed 5.2 megohms.

, f0 v2 ^; r2 P  }9 b' C) L( i