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CAT 7 Cable
Features of the cable:
As shown in figure 1, Category 7 or Class F cable has four individually foiled twisted pairs that are bundled together and surrounded by either an additional foil(F/FTP) or braided screen (S/FTP). The redundant screening or shielding provides more consistent transmission characteristics among each of the pairs.It also substantially reduces inter-pair and alien crosstalk.
Inter-pair crosstalk is the tendency for signals carried by one pair to interfere with one or more of the other four pairs in the cable. Alien crosstalk describes the condition where interfering signals are coupled into a cable from another adjacent cable, a nearby power source, wireless communications device or electrical equipment. Unlike Category 5/6 cable, the individually shielded pairs don’t rely on varying twist rates to control crosstalk. Each pair is twisted at nearly an identical rate, rendering closely matched propagation speeds. This minimizes inter-pair skew.
Despite its differences in construction and specifications, Category 7 can support legacy Category 5/6 infrastructure. Cross connection patch cables and patch panels are available to adapt standard RJ-45 connections to the Category 7 environment.
Figure 1
