线缆分析仪远端衰减串音比参数的校准方法研究
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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.
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.
引文
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[6]赵才军,蒋全兴,何鹏,等.一种使用矢量网络分析仪的阻抗测量改进方法[J].计量学报,2010,31(2):160-164.
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[8]刘晨,吴爱华,孙静,等.宽带在片SOLT校准件研制及表征[J].计量学报,2017,38(1):98-101.
[2]YD/T 926.3—2009大楼通信综合布线系统第3部分:连接硬件和接插软线技术要求[S].2009.
[3]IEC 61935-1 Specification for the Testing of Balanced and Coaxial Information Technology Cabling—Part 1:Installed Balanced Cabling as Specified in ISO/IEC11801 and Related Standards,Edition 3[S].2009.
[4]Sellone M,Oberto L,Shan Y,et al.Comparison of SParameter measurements at millimeter wavelengths between INRIM and NMC[J].IEEE Transactions on Instrumentation&Measure,2014,63(7):1810-1817.
[5]李胜海,杨桥新.网络线缆分析仪近端串扰的校准研究[J].电子产品可靠性与环境试验,2011,29(5):54-57.
[6]赵才军,蒋全兴,何鹏,等.一种使用矢量网络分析仪的阻抗测量改进方法[J].计量学报,2010,31(2):160-164.
[7]Meng Y S,Patel A C,Shan Y,et al.Performance evaluation of a handheld network analyzer for testing of balanced twisted-pair copper cabling[C]//Conference on Precision Electromagnetic Measurements(CPEM2014),2014:348-349.
[8]刘晨,吴爱华,孙静,等.宽带在片SOLT校准件研制及表征[J].计量学报,2017,38(1):98-101.