Utp Cabling; Daisy-Chain Utp Cabling; Utp Cabling Standards - IBM 5500 Operational, Installation, And Maintenance Manual

UTP Cabling

Daisy-chain UTP Cabling

UTP Cabling Standards

134
Chapter 6: Twinax Client Cabling Requirements and Problem Solving
Figure 71: Between Workstations
Connect Meter Leads As Shown Below
Positive
Red
Green
Red
Green
Shield
Shield
a. Resistance for surge suppressors has been included. Without surge sup-
pressors, the normal resistance is 0 to 105 W.
The following section describes UTP cabling.
Note: Daisy-chain UTP cabling is not supported.
In daisy-chain topologies, do not replace twinax cables with baluns and UTP/
FTP cable. UTP/FTP cable is not supported in daisy-chain topologies. Only a
single UTP device can be directly attached to a twinax port on the workstation
controller. In order to support multiple devices using UTP/FTP cabling, a
twinax UTP star hub must be used.
Twinax over UTP/FTP is only supported when wired in a star topology. A star
topology is one in which a signal connection to the twinax port from the
workstation controller attaches to a twinax UTP hub and the outputs from this
hub "stars" out to the individual devices.
Categories (levels of performance) for UTP wiring are defined by the
Electronic Industries Association/Telecommunication Industry Association
(EIA/TIA), Underwriters Laboratories Inc. (UL), cable manufacturers, and
others.
Refer to the electrical specifications for level 3, 4, and 5 UTP and for FTP
cables in Figure 72.
Planning, Installation, and Maintenance Guide
Negative
Orange
Black
Green
Red
Red
Green
Normal Resistance
a
W
0 to 135
W
0 to 135
W
> 5000
W
> 5000
W
> 5000
W
> 5000