刚参加工作,刚看标准,有些疑惑
CISPR 14-1(2009)
The appliance shall be placed 0.4 m above an earthed conducting surface of at least 2 m *2 m in size and at a distance of 0,8 m from the artificial mains V-network and shall be kept at least 0,8 m from any other earthed conducting surface. If the measurements are made in a screened enclosure, the distance of 0,4 m may be referred to one of the walls of the enclosure.
CISPR 14-1 的描述应该是指器具放在 接地导电平面 上方 0.4m ,即地面上方0.4m 而距其他接地导电平面0.8 m ,即距墙 0.8m;但一些图片以及实验室的布置,都是器具离地面0.8m,离屏蔽室墙面0.4m 。如何解释呢? 谢谢~
图2
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