线缆分析仪远端衰减串音比参数的校准方法研究  

Research on Calibration M ethod of Cable Analyzer in Far-end Attenuation-to-Crosstalk Ratio Parameter

作　　者：陈龙泉 许伟[1] 黄震 张颖艳 CHEN Long-quan, XU Wei, HUANG Zhen, ZHANG Ying-yan(Telecom Technology Lab, China Academy of Telecommunication Research, Ministry of Industry and Information Technology, Beijing 100191, Chin)

机构地区：[1]工业和信息化部电信研究院,北京100191

出　　处：《计量学报》2018年第3期405-409,共5页Acta Metrologica Sinica

基　　金：国家科技重大专项(2015ZX03001011);国家重点研发计划(2016YFF0200104)

摘　　要：远端衰减串音比是数字平衡线缆的主要参数,也是线缆分析仪的必备测试项目。提出一种针对线缆分析仪远端衰减串音比的校准方法,通过网络分析仪和阻抗转换器分别测量参考线缆的插入损耗和远端串扰,进而得到远端衰减串音比的数值结果。而线缆分析仪远端衰减串音比参数的校准即是通过直接对比同一参考线缆的网络分析仪与待测线缆分析仪的测试结果实现。该方案与Psiber~的Wirexpert型线缆分析仪的测试结果对比进一步验证了可行性,并给出扩展不确定度。Far-end attenuation-to-crosstalk ratio （ACR-F） is the primary parameter of digital balanced cable, also the essential test item in cable analyzer. Have proposed a calibration method on ACR-F of cable analyzer, which utilize network analyzer （NA） and impedance converter to measure insertion loss （IL） and far-end crosstalk （FEXT） in reference cable separately, and acquire the derived results. And the calibration method of ACR-F is direct comparison between the NA and cable analyzer on the reference cable. The method is confirmed through comparison with Psiber Wirexpert series cable analyzer, and extended uncertainty is also listed.

关 键 词：计量学 远端衰减串音比 线缆分析仪 插入损耗 远端串扰 

分 类 号：TB973[一般工业技术—计量学]