Nordx/cdt Inc.

J&ouml;rg-Hein Walling

Jacques Cornibert

Denis Blouin

Omar Saad

Jean-Francois Richard

A data communication cable includes a cable jacket surrounding a plurality of twisted pairs of insulated conductors disposed longitudinally over the length of the communication cable and arranged side-by-side to reduce cross-talk between the twisted pairs. The cable also includes a first region having a first thickness disposed between two regions having a second thickness. These regions, or another structure located on the outer surface of the jacket, are arranged to prevent symmetric stacking of several communication cables and thus reduce alien cross-talk arising from outside of the communication cable.

High speed data communication cables

A cross web core in a high performance data cable maintains geometric stability between plural twisted pair transmission media and between each twisted pair and the cable jacket. The cross web core may further isolate twisted pairs from each other by including conductive or magnetically permeable materials. By so doing, loss, impedance and crosstalk performance are improved.

Cross web for data grade cables

A cable twisting method and apparatus, for forming double twisted pair cables. The invention longitudinally distributes the eccentricities of the individual cables, where the helical propagation of the eccentricity is not conformal to the helix formed by the geometric shape of the cables.

Double-twisting cable machine and cable formed therewith

A cable testing device apparatus has been developed so as to measure the NEXT and ELFEXT characteristics of a cable containing a plurality of twisted pairs. In particular, the present invention simultaneously provides each twisted pair within the cable with an electrical signal of equal magnitude and measuring the equivalent power sum output for each of the individual twisted pairs within the cable. Thus, a total of 25 measurements for each test are needed, for a total of 50 tests.

Growing community of inventors

Beaconsfield, Canada

Jörg-Hein Walling

Growing community of inventors

Beaconsfield, Canada

J&ouml;rg-Hein Walling

Jörg-Hein Walling