【摘要】 不对称数字用户线(ADSL)的线路测试,基于窄带和宽带特性确定其故障。宽带测试首先判断线路的窄带电容和环阻值,然后再判断ADSL宽带线路的电感特性、纵向平衡特性、频率响应特性、线路噪音特性、TDR特性和DMT特性等,最终决定线路的质量评估,分析定位ADSL带宽故障。更多还原

【Abstract】 Test of asymmetrical digital subscriber line(ADSL),based on POTS(plain old telephone service)and broadband character,is used to confirm the fault.The test is realized through:Firstly,broadband test judges subscriber line POTS capacitance and resistance,then judge the ADSL broadband subscriber line inductance,longitudinal balance,frequency response,noise,TDR and DMT of character etc,finally,decided the subscriber quality of service,analyzed the position of ADSL broadband fault.更多还原