Category 7 cable

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Category 7 cable
Category 7 cable (Cat 7), (ISO/IEC 11801:2002 category 7/class F), is a cable standard for Ethernet and other interconnect technologies that can be made to be backwards compatible with traditional Cat 5 and Cat 6 Ethernet cable. Cat 7 features even more strict specifications for crosstalk and system noise than Cat 6. To achieve this, shielding has been added for individual wire pairs and the cable as a whole.
The Cat 7 cable standard has been created to allow 10 gigabit Ethernet over 100m of copper cabling (also, 10-Gbit/s Ethernet now is typically run on Cat 6a). The cable contains four twisted copper wire pairs, just like the earlier standards. Cat 7 can be terminated either with 8P8C compatible GG45 electrical connectors which incorporate the 8P8C standard or with TERA connectors. When combined with GG45 or TERA connectors, Cat 7 cable is rated for transmission frequencies of up to 600MHz.
Category 7a
Category 7a (or Augmented Category 7) operates at frequencies up to 1000 MHz, suitable for multiple applications in a single cable including 40 Gigabit Ethernet, 100 Gigabit Ethernet, and CATV (862 MHz). Simulation results have shown that 40 Gigabit Ethernet is possible at 50 meters and 100 Gigabit Ethernet is possible at 15 meters. Mohsen Kavehrad and researchers at Pennsylvania State University believe that either 32 nm or 22 nm circuits will allow for 100 Gigabit Ethernet at 100 meters.
See also
Category 5 cable
Category 6 cable
References
^ a b "DesignCon 2009: 40/100 Gbps Transmission Over Copper". techonline. 2009-02-01. http://www.techonline.com/learning/techpaper/213001693. Retrieved on 2009-02-28.
^ "Patch cords with integrated baluns enable multi- HD video support". Cabling Installation & Maintenance. 2008-04-30. http://cim.pennnet.com/display_article/327273/27/NEWS/none/TOPST/1/Patch-cords-with-integrated-baluns-enable-multi--HD-video-support/. Retrieved on 2009-02-28.
^ "New Siemon Patch Cords with Integrated Baluns Provide Single-Outlet Support of Multiple High-Definition Video Signals". Siemon. 2008-04-28. http://www.siemon.com/us/company/press_releases/08-04-28-tera-balun.asp. Retrieved on 2009-02-28.
^ News release
^ "UPDATE: Cat-7 copper theorized to transmit 100 Gbps in excess of 100 meters using future modems". TGDaily. 2007-11-14. http://www.tgdaily.com/content/view/34854/113/. Retrieved on 2009-02-28.
De-Mystifying Cabling Specifications From 5e to 7A

v?d?eUnshielded and shielded twisted pair cabling standards
Cat 1: Currently unrecognized by TIA/EIA. Previously used for POTS telephone communications, ISDN and doorbell wiring.
Cat 2: Currently unrecognized by TIA/EIA. Previously was frequently used on 4 Mbit/s token ring networks.
Cat 3: Currently defined in TIA/EIA-568-B, used for data networks using frequencies up to 16 MHz. Historically popular for 10 Mbit/s Ethernet networks.
Cat 4: Currently unrecognized by TIA/EIA. Provided performance of up to 20 MHz, and was frequently used on 16 Mbit/s token ring networks.
Cat 5: Currently unrecognized by TIA/EIA. Provided performance of up to 100 MHz, and was frequently used on 100 Mbit/s Ethernet networks. May be unsuitable for 1000BASE-T gigabit ethernet.
Cat 5e: Currently defined in TIA/EIA-568-B. Provides performance of up to 100 MHz, and is frequently used for both 100 Mbit/s and Gigabit Ethernet networks.
Cat 6: Currently defined in TIA/EIA-568-B. Provides performance of up to 250 MHz, more than double category 5 and 5e.
Cat 6a: Currently defined in ANSI/TIA/EIA-568-B.2-10. Provides performance of up to 500 MHz, double that of category 6. Suitable for 10GBase-T.
Cat 7: An informal name applied to ISO/IEC 11801 Class F cabling. This standard specifies four individually-shielded pairs (STP) inside an overall shield. Provides performance of up to 600 MHz.
Cat 7a: An informal name applied to Amendment 1 of ISO/IEC 11801 Class F cabling. Provides performance of up to 1000 MHz. Suitable for 40 Gigabit Ethernet.
See also: TIA/EIA-568-B ? Ethernet ? 8P8C ? Ethernet crossover cable ? Twisted pair

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