The line quality test, transmission quality test and fault location test can be conducted prior to operation by mean of single - ended measurement, master - slave system measurement and ATU - C/R emulation .
英
美
- 利用它可通過(guò)單端測量、主從機測量和ATU-C/R仿真等方法,進(jìn)行開(kāi)通前線(xiàn)路質(zhì)量確認性測試、傳輸質(zhì)量測試以及故障定位測試等。
