Stp - Cabletron Systems MCC-16 User Manual

MEDIA SPECIFICATIONS
EIA/TIA Electrical
Category Impedance
Cat. 3 100
Cat. 4 100
Cat. 5 100
C.1.2 STP
The MCC-16 supports IBM Type 1, 2, 6, and 9 STP cabling as described
below:
• IBM Type 1 consists of two STP lengths of 22 AWG solid wire for
data. It is typically used for the longest cable runs within walls of
buildings.
• IBM Type 2 is similar to Type 1 data cable, but it has four additional
UTP lengths of 22 AWG solid wire carried outside of the shield casing.
It is typically used for voice communication and often used to wire
cable runs within the walls of buildings.
IBM Type 6 consists of two STP lengths of 26 AWG stranded wire for
•
data. It is typically used in patch panels or to connect devices to/from
wall jacks.
IBM Type 9 is similar to Type 1, but it uses 26 AWG solid wire
•
instead.
IBM Types 6 and 9 are used primarily for lobe connections from stations
to wall jacks or patch panels.
Table C-2 lists STP cable performance specifications.
Types Frequency
4 MHz
1 & 2
16 MHz
4 MHz
6 & 9
16 MHz
C-2
Table C-1 UTP Performance Specifications
Attenuation
@ 4 MHz
dB/1000 ft.
15% 17
15% 13
15% 13
Table C-2 STP Cable Specifications
Impedance
150 + 15%
150 + 15%
150 + 15%
150 + 15%
Attenuation
@ 16Mhz
dB/1000 ft.
40
27
25
.
Attenuation
<22 dB/km (6.7 db/1000 ft.)
<45 dB/km (13.7 db/1000 ft.)
<33 dB/km (10 db/1000 ft.)
<66 dB/km (20 db/1000 ft.)
NEXT
dB/1000 ft.
23
36
44