Structured cabling, also called communications cabling, dat\/voice is the standarized infrastructured (by TIA\/EIA and IEEE) for telephone and local area network (LAN). These standards are TIA\/EIA 568 and IEEE 802.3. Nowadays structured cabling is also part of AV world.<\/p>\n
This cabling is made up of 4 twisted pairs (shielded or unshielded) with an impedance of 100 \u2126. Conductor diameter depends on the category but ranging from 24-23 AWG (at higher category bigger diameter).<\/p>\n
Each pair can be differentiated by colour:<\/p>\n
Pair 1: White\/Blue \u2013 Blue<\/p>\n
Pair 2: White\/Orange \u2013 Orange<\/p>\n
Pair 3: White\/Green \u2013 Green<\/p>\n
Pair 4: White\/Brown \u2013 Brown<\/p>\n
It can be changed by each manufacturer.<\/p>\n
Estructured cabling is classified to different categories:<\/p>\n
CAT 3: 10 BASET\/\/Bit rate: 10 Mbps\/\/Bandwidth: 16 MHz<\/p>\n
CAT. 5: 100 BASET\/\/Bit rate:100 Mbps \/\/Bandwidth: 100 MHz<\/p>\n
CAT 5E: 1000 BASET\/\/Bit rate: 1000 Mbps o 1 Gbps\/\/Bandwidth: 100 MHz. (Clase D)<\/p>\n
CAT. 6: 1000 BASET\/\/Bit rate: 1000 Mbps o 1Gbps\/\/Bandwidth: 250 MHz. (Clase E)<\/p>\n
CAT 6A: 10 GBASET\/\/Bit rate: 10 Gbps\/\/Bandwidth: 500 MHz o versiones de 625 MHz (Clase EA).<\/p>\n
Physically the category can be distinguished by the diameter of the conductors and especially by the twisted step. At higher category more steps.<\/p>\n
The naming convention specified by ISO\/IEC 11801 is shown:<\/p>\n
XX\/ZTP<\/p>\n
XX = Overall shielding:<\/p>\n
F = foil shielded<\/p>\n
S = braid shielded<\/p>\n
SF = braid and foil shielded<\/p>\n
Z = Individual shield each pair:<\/p>\n
U = unshielded<\/p>\n
F = foil shielded<\/p>\n
TP = Twisted pair.<\/p>\n
If we have a F\/UTP cable, we have: a cable with foil overall shield and without shielding each pair.<\/p>\n
If we have a FTP cable, we have: a cable with foil shield each pair.<\/p>\n
If we have a SF\/UTP cable, we have: a cable with double shield (braid and foil) and without sielding each pair.<\/p>\n
NOTE: There are cables with besides having double shielding are composed of double cover for higher protection against external aggressions CABLE SF\/UTP<\/p>\n
The overall shielding reduces the external interferences like EMI (Electromagnetic interferences) or RFI (Radio-frequency interferences) and the individual shielding reduces interference bethween pairs in the same cable (Alien crosstalk).<\/p>\n
Bibliography: Handbook for Sound Engineers. Fourth Edition. Glen Ballow. Focal Press.<\/p>\n","protected":false},"excerpt":{"rendered":"
Cable of 4 twisted pairs (shielded or unshielded) for LAN or Audiovisual applications. They are classified in CAT 5, CAT 5e, CAT 6, CAT 6A… and depending on the its shielding: UTP, FTP, F\/UTP, F\/FTP, SF\/UTP…<\/p>\n","protected":false},"author":1,"featured_media":0,"menu_order":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"glossary-categories":[],"glossary-tags":[],"class_list":["post-5245","glossary","type-glossary","status-publish","hentry"],"acf":[],"yoast_head":"\n