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5.遠(yuǎn)端串音防衛(wèi)度：150kHZ時(shí)指定組合的功率平均值大于69dB/km。

配線電纜HPVV特價(jià)廠家  50對(duì)通信電纜色譜線序： 
說明：50對(duì)的通信電纜要注意了，50對(duì)通信電纜里有2種標(biāo)識(shí)線，前25對(duì)是用“白蘭"標(biāo)識(shí)線纏著的�。『�25對(duì)是用“白桔"標(biāo)識(shí)線纏著的�。� 
（注意：這25對(duì)用“白蘭"標(biāo)識(shí)線纏著） 
1對(duì)—白蘭   2對(duì)—白桔    3對(duì)—白綠   4對(duì)—白棕   5對(duì)—白灰 
6對(duì)—紅蘭   7對(duì)—紅桔    8對(duì)—紅綠   9對(duì)—紅棕   10對(duì)—紅灰 
11對(duì)—黑蘭  12對(duì)—黑桔   13對(duì)—黑綠  14對(duì)—黑棕  15對(duì)—黑灰 
16對(duì)—黃蘭  17對(duì)—黃桔   18對(duì)—黃綠  19對(duì)—黃棕  20對(duì)—黃灰 
21對(duì)—紫蘭  22對(duì)—紫桔   23對(duì)—紫綠  24對(duì)—紫棕  25對(duì)—紫灰 
（用“白桔"標(biāo)識(shí)線纏著） 
26對(duì)—白蘭  27對(duì)—白桔   28對(duì)—白綠  29對(duì)—白棕  30對(duì)—白灰 
31對(duì)—紅蘭  32對(duì)—紅桔   33對(duì)—紅綠  34對(duì)—紅棕  35對(duì)—紅灰 
36對(duì)—黑蘭  37對(duì)—黑桔   38對(duì)—黑綠  39對(duì)—黑棕  40對(duì)—黑灰 
41對(duì)—黃蘭  42對(duì)—黃桔   43對(duì)—黃綠  44對(duì)—黃棕  45對(duì)—黃灰 
46對(duì)—紫蘭  47對(duì)—紫桔   48對(duì)—紫綠  49對(duì)—紫棕  50對(duì)—紫灰