- Advanced crosstalk management capabilities deal with both NEXT (near-end crosstalk
) and FEXT (far-end crosstalk) in scenarios where multiple fiber extenders are deployed in the same apartment building.
This involves extracting some of the important parameters such as characteristic impedance ([z.sub.0]), time delay (td), dielectric constant (dk), near-end crosstalk
([s.sub.31]), far-end crosstalk ([s.sub.41]) and transmission coefficient ([S.sub.21]).
* Enhanced EMI shielding and low near-end crosstalk
In this model, near-end crosstalk
characteristics were also studied using the cascading technique and compared those with other results to show that the cascading technique cannot efficiently estimate crosstalk because discontinuity effects are not considered in the technique.
ranges from -40 dB at 13 GHz to -57 dB at 4.05 GHz assuming a single aggressor.
. The signal traveling backwards toward the driver is called near-end or backward crosstalk.
The crosstalk signal [x.sub.NEXT] (t) is called a near-end crosstalk
The transceivers are required to cancel both echo and near-end crosstalk
(NEXT) on each pair of wires, and cancellation of far-end crosstalk, while recommended, was not required.
In a typical stackup with .006" wide lines, and each of the three dielectric layers is .005" thick, the saturated near-end crosstalk
coefficient (NEXT) in broadside coupling is about 15%.
The MystiPHY110 offers high immunity to noise and cross-talk, meeting the IEEE specification for near-end crosstalk
* Near-End Crosstalk
(NEXT) - occurs when a signal from one cable pair leaks into another, akin to static on a phone fine.