M75 

一台電腦要能夠號稱"防水", 能否通過IP測試就顯得異常重要了. 在IEC (International Electrotechnical Commission) 60529中所謂的Ingress Protection rating有系統的將電子產品防水防塵(防侵入)的等級做了以下區分:

 IP ratingLevel of protection
Solid ingress
IP1X Protected against solid objects greater than 50mm diameter
IP2X
Protected against solid objects greater than 12.5mm diameter
IP3X
Protected against solid objects greater than 2.5mm diameter 
IP4X
Protected against solid objects greater than 1.0mm diameter
IP5X Dust protected
IP6X Dust tight (with a vacuum applied to the product)
Liquid ingress IPX1
Protected against dripping water
IPX2
Protected against dripping water when tilted up to 15
IPX3
Protected against spraying water
IPX4
Protected against splashing water
IPX5
Protected against water jets
IPX6
Protected against powerful water jets
IPX7
Protected against the effects of temporary immersion in water
IPX8 
Protected against the effects of continuous immersion in water


比如說一台軍規電腦它說可以達到IP54等級, 就是意謂著它能夠阻止一般粉塵的侵入以及雨淋. 更高一點的電腦可以做到IP65, 意謂著抵擋沙塵暴(有風速)以及水柱的噴射(有水壓).

下面這段影片拿Panasonic的CF30以及Motorola的ML910來做實際的IP測試, 最後甚至還做了另一項爆破測試, 關於爆破測試的介紹就等下次囉....

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