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Category 7 is a Class F shielded copper wire
developed by Alcatel, capable of transmitting data at speeds of up to
10Gbit/s (close to existing fiber speeds.)
Technical
Info:
IBM Standard for
ISO 11801:
Name: Gold
Category & Description: Category 7*/ Class F - copper,
shielded
Standard: 650 Megahertz
ACS Performance: 1 Gigahertz
Description:
Rated temperature:
60, 75
Reference Standard: UL444, TIA/EIA
568A
Bare solid or Stranded copper conductor
Colour-coded
PE insulation
Passes UL Riser flame test & CSA FT4 vertical flame
test
Application:
100 Base-T4
100
Base-TX
100VG - AnyLAN
1000 Base-T (Gigabit Ethernet)
155 Mbps ATM
622 Mbps ATM
Cable
Construction:
Construction: SSTP
#23
Conductor Dimension /mm: 0.57
Core Dimension /mm: 1.35
Number of pairs:
4
Individual Shielding:
Aluminum/PE
Overall Shielding: Copper Wire
Braid
Nom O.D. /mm: 7.2
Category 7 cable is of a different construction
than category 5e or 6 cable.
Not only is there an overall braid and/or foil
around all four pairs, but each pair is
individually wrapped in foil.
Electrical
Characteristics:
|
Frequency
/MHz |
Impedance /ohm
|
Attenuation
db/100m
|
Next Worst Pair
/db
|
ACR
/db |
|
|
1.0 |
100 
15
|
2.0 |
80.0 |
78.0 |
|
4.0 |
3.8 |
80.0 |
76.2 |
|
10.0 |
6.0 |
80.0 |
74.0 |
|
16.0 |
7.6 |
80.0 |
72.4 |
|
20.0 |
8.5 |
80.0 |
7.5 |
|
31.25 |
10.6 |
80.0 |
69.4 |
|
62.5 |
15.1 |
75.5 |
60.4 |
|
100.0 |
19.3 |
72.4 |
53.1 |
|
155.0 |
100
25 |
24.2 |
69.6 |
45.3 |
|
200.0 |
27.7 |
67.9 |
40.2 |
|
300.0 |
34.4 |
65.3 |
30.9 |
|
600.0 |
50.0 |
60.8 |
10.7 |
Connectors:
Siemon’s TERA™ connector has been accepted as the
"non RJ-style" category 7 interface.
The "RJ-style" category 7 interface uses four
additional pins in the outlet and plug, as seen
here.
TIA and ISO have implemented provisions into their
Standards to ensure that category 7/class F cabling systems will work in harmony
with existing gneric infrastructures.
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