YDT1070-2000接入网远端设备Z接口技术要求.pdf

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1、yu中华人民共和国通信行业标准YD/T1070-2000接入网远端设备Z接口技术要求ZInterfacerequirementofaccessnetworkremoteequipment2000-06-27发布2000-09-01实施中华人民共和国信息产业部发布YD/T1070-20加目次前言····················。············...........................................................................................111范围·

2、......................................................................................................................12引用标准··········································，·，·································，·。····‘················，···..⋯⋯13定义和符号及缩写·································

3、··，·，····································。··················一‘·‘·‘13.1定义··················································································································⋯⋯13.2缩略语·.................................................................................

4、..................................14接入网远端设备Z接口技术要求·............................................................................‘一““14.1电气特性及传输性能要求·····················，·····················。·。················‘········。········⋯⋯“”’14.1.1阻抗特性····································

5、········，，······················。·····，··········。·。·。··········.....⋯⋯14.1.2对地阻抗不平衡·········，···············································。···················。···················一24.1.3接口点的相对电平····4····························，···············································

6、··········⋯⋯24.1.4回声和稳定性·.......................................................................................................34.1.5损耗频率失真”···························。，·，···················。················，···························⋯⋯34.1.6增益随输入电平的变化·······················

7、·，·，·，·························，···························，·，··⋯⋯44.1.7群时延和群时延失真·..............................................................................................44.1.8衡重杂音·..........................................................................................

8、...................64.1.9总失真·................................