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有台电源因为时间问题要走空运,但是在机场检查时,磁性不过.之后包装中采取磁屏蔽的方式,但是效果不是太明显,所以在此请教各路高手讨论一下,使用什么办法来解决这个问题,和这个问题产生的原因:- q6 [ ]% {! }
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在机场磁测试有两个步骤:! E$ z+ T! ^ O! D6 F; v3 D7 `, q. D: W' [
First: Static inspection
+ M/ L X/ n" p2 ^3 MSecond Dynamic inspection./ a- n8 i! s+ l( @
, M% Q/ B6 y8 v0 [% [6 O1 u测试结果如下Now we have the situation both on above two steps: magnetism not stable with slight movement while Static inspection. * X# E5 P" f0 y: |0 e# o
And also over indicators with Dynamic inspection. Below please find some standard indicator for your ref:
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2 }3 b7 r* }. \4 |, zBefore degaussing <1300 NP (Dynamic status)
. F6 e5 F3 q; s0 h; nAfter degaussing <400-600 NP (Dynamic status)
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Now we have the figure with 800-1000 NP after Degaussing. |
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