IS/IEC 61196 : Part 1 : Sec 108 : 2011 Coaxial Communication Cables - Part 1 Electrical Test Methods - Section 108 Test for Characteristic Impedance, Phase and Group Delay, Electrical Length and Propagation Velocity
NATIONAL FOREWORD
This Indian Standard (Part 1/Sec 108) (First Revision) which is identical to IEC 61196-1-108 : 2011 'Coaxial communication cables - Part 1-108: Electrical test methods - Test for characteristic impedance, phase and group delay, electrical length and propagation velocity' issued by the International Electrotechnical Commission (IEC) was adopted by the Bureau of Indian Standards on the recommendation of Wires, Cables, Waveguides and Accessories Sectional Committee and approval of the Electronics and Information Technology Division Council.
This standard was first published in 2012 and was identical to IEC 61196-1-108 : 2005. The first revision of this Indian Standard has been under taken up to align it with the latest version of IEC 61196-1-108.
This second edition replaces the first edition published in 2005. The main changes to the previous edition is the enclosing of Annex A describing the measurement of phase dispersion:
The text of IEC standard has been approved as suitable for publication as an Indian Standard without deviations. Certain conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following:
a) Wherever the words 'International Standard' appears referring to this standard, they should be read as 'Indian Standard'; and
b) Comma (,) has been used as a decimal marker while in Indian Standards, the current practice is to use a point (.) as the decimal marker.