想請問各位大大有用過WT210 power meter 這儀器的人 就是小弟開機後讓它先待機30分鐘,然後開始設定電壓範圍 接著在設定電流範圍,兩者我都設為AUTO,模式我設為RMS 但是很奇特的是它的功率顯示一直為負值,是不是小弟哪裡還沒設定 請希望高手幫小弟解答,感激不盡!!! 以下附張圖 http://imgur.com/nj8TKNP&4XoV3fL#0
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