A.422監(jiān)控時必須把每個要監(jiān)控單元串成回路,否則無法監(jiān)控 B.光纖監(jiān)控時必須把每個要監(jiān)控單元串成回路,否則無法監(jiān)控 C.監(jiān)控單元最多能帶255個LC D.08機的監(jiān)控單元只能用光纖監(jiān)控
A.2400 B.255 C.1024 D.9600
A.監(jiān)控單元控制 B.系統(tǒng)通訊正常時,按每個模塊的充電開關 C.啟用模塊的強制充電開關 D.模塊最上方的三個按鈕同時按下