IEC 61935-2:2010 provides methods to ensure compatibility of balanced cords to be used in cabling according to ISO\/IEC 11801 and provides test methods and associated requirements to demonstrate the performance and reliability of these balanced cords during their operational lifetime. This International Standard may also be used for providing test methods for assessing the behaviour of other balanced cords. This third edition cancels and replaces the second edition published in 2005. It differs from the second edition in that it covers category 6A to category 7A cords as defined in ISO\/IEC 11801.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 6<\/td>\n | English CONTENTS <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | INTRODUCTION <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 1 Scope 2 Normative references <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 3 Terms and definitions 4 General requirements and test configuration 4.1 Cable and connector design 4.2 Balanced cord, cable and connector tests 4.3 Test configuration and equipment <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 4.4 Balanced cord tests requirements Figures Figure 1 \u2013 Test configuration for balanced cord for NEXT and return loss measurements <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 5 Acceptance tests 5.1 Visual inspection <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 5.2 Wire map Figure 2 \u2013 Correct pairing Figure 3 \u2013 Incorrect pairing <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 5.3 Propagation delay 5.4 Delay skew 5.5 Insertion loss 5.6 Return loss <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 5.7 Near end crosstalk (NEXT) Tables Table 1 \u2013 Return loss requirements Table 2 \u2013 Balanced cord return loss requirements at key frequencies <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | Table 3 \u2013 Category 5 balanced cord NEXT requirements at key frequencies Table 4 \u2013 Category 6 balanced cord NEXT requirements at key frequencies Table 5 \u2013 Category 6A balanced cord NEXT requirements at key frequencies Table 6 \u2013 Category 7 balanced cord NEXT requirements at key frequencies Table 7 \u2013 Category 7A balanced cord NEXT requirements at key frequencies <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | 5.8 Assumptions used in the development of cord requirements 6 Balanced cord test procedure \u2013 Network analyser test configuration Table 8 \u2013 Assumptions for cabling components used in the development of NEXT and return loss requirements <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | 7 Periodic tests 7.1 General 7.2 Tensile strength Figure 4 \u2013 Initial marking of the cable sheath Figure 5 \u2013 Final visual inspection <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | 7.3 Flexure Figure 6 \u2013 Fixture for balanced cord flexure test <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | 7.4 Bending 7.5 Twisting Figure 7 \u2013 Bending test: assembly in U shape <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | 7.6 Crushing Figure 8 \u2013 Twisting test: assembly in U shape <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | 7.7 Dust test Figure 9 \u2013 Fixture for cable crushing test <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | 7.8 Coupling attenuation Figure 10 \u2013 Measuring device Table 9 \u2013 Coupling attenuation limits <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | 7.9 Climatic sequence 8 Test head requirements 8.1 General 8.2 Minimum requirements for all test head designs <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | 8.3 Additional FEXT requirements for balanced connector compatible test heads 8.4 Additional return loss requirements for balanced connector compatible test heads 8.5 NEXT loss centering requirements for balanced connector compatible test heads <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | Figure 11 \u2013 Centering of NEXT properties of the balanced connector test head <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Specification for the testing of balanced and coaxial information technology cabling – Cords as specified in ISO\/IEC 11801 and related standards<\/b><\/p>\n |