通(tong)(tong)光(guang)(guang)(guang)筆（A型(xing)）最大輸出功率可(ke)達30mW,可(ke)以檢測長度超10km光(guang)(guang)(guang)纖(xian)(xian)的斷裂或(huo)彎折故障。常亮模式和閃爍模式分別可(ke)測試光(guang)(guang)(guang)纖(xian)(xian)導通(tong)(tong)狀況及快速(su)察覺(jue)光(guang)(guang)(guang)纖(xian)(xian)斷點位置。
