• The maximum cabling distance between the host and the last
workstation or PC on a twinaxial cable depends on the type
of
transmission:
In 1 Mbps mode, the maximum distance is 1525 meters
(5000 feet).
In 2 Mbps mode, the maximum distance is 1220 meters
(4000 feet).
Figure 25 is an example
of
how to connect devices using twinaxial
cabling. For more information about arranging devices, see the
installation or device configuration information for your host.
CEA21002
Figure
25.
Twinax Connection Diagram
Unshielded Twisted Pair Cabling
You can run twinax signals through unshielded twisted pair (UTP)
cabling by using twinax to UTP baluns and one
of
the following hubs:
• IBM 5299
IBM 6299
• IBM 7299
For more information about UTP cabling for twinax devices, see:
• IBM 7299 Express Hub for AS/400 Planning, Installation, and
Maintenance Guide, S05J-3355-00
• IBM 6299 Midrange Hub Planning, Installation, and Maintenance
Guide, G571-0362
IBM 5299 Terminal Multiconnector Model 3 Planning, Setup, and
Maintenance Guide, GA27-3749
When using UTP cabling between the host and the hub, the following
rules apply:
UTP connections through a 5299
• In 1 Mbps mode, the maximum distance between the host and
the 5299 or any workstation is 304.8 meters (1000 feet). In 2
Mbps mode, this distance is derated
to
228.6 meters (750
feet).
In 1 Mbps mode, the maximum distance between the 5299
and any workstation is 274.3 meters (900 feet). In 2 Mbps
mode, this distance is derated
to
198.1 meters (650 feet).
Part
3.
Reference 39
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