IEC/TR 61156-1-2 Ed. 1.1現行
Multicore and symmetrical pair/quad cables for digital communications Part 1-2: Electrical transmission characteristics and test methods of symmetrical pair/quad cables
出版：International Electrotechnical Committee
專家解讀視頻
IEC/TR 61156-1-2:2009+A1:2014 is a revision of the symmetrical pair/quad electrical transmission characteristics present in IEC 61156-1:2002 (Edition 2) and not carried into IEC 61156-1:2007 (Edition 3). This technical report includes the following topics from IEC 61156-1:2002 - the characteristic impedance test methods and function fitting procedures of 3.3.6; - Annex A covering basic transmission line equations and test methods; - Annex B covering the open/short-circuit method; - Annex C covering unbalance attenuation. This consolidated version consists of the first edition (2009) and its amendment 1 (2014). Therefore, no need to order amendment in addition to this publication.
