Twisted-Pair Cable/Connector Pin-Outs - HP ProCurve 6120G/XG Installation And Getting Started Manual

Cabling and Technology Information
If you connect the patch cord directly to the network cabling, you may need to install a female-
to-female adapter to allow the cables to be connected together.
Figure 9.
Make sure you purchase a patch cord that has appropriate connectors on each end, and has
multimode fibers that match the characteristics of the multimode fiber in your network. Most
important, the core diameter of the multimode patch cord must match the core diameter of
the multimode cable infrastructure (either 50 or 62.5 microns).

Twisted-Pair Cable/Connector Pin-Outs

Auto-MDIX Feature: The 10/100/1000-T ports support the IEEE 802.3ab standard, which
includes the "Auto MDI/MDI-X" feature. In the default configuration, "Auto", the RJ-45 ports
on the switch all automatically detect the type of port on the connected device and operate as
either an MDI or MDI-X port, whichever is appropriate. So for any connection, a straight-
through twisted-pair cable can be used -- you no longer have to use crossover cables, although
crossover cables can also be used for any of the connections.
If you connect a switch twisted-pair port to another switch or hub, which typically have MDI-
X ports, the switch port automatically operates as an MDI port. If you connect it to an end node,
such as a server or PC, which typically have MDI ports, the switch port operates as an MDI-X
port. In all cases, you can use standard straight-through cables or crossover cables.
If you happen to use a correctly wired crossover cable, though, the switch will still be able to
automatically detect the MDI/MDI-X operation and link correctly to the connected device.
Other Wiring Rules:
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40
To network
multimode
cabling
The multimode cable in the patch cord
must match the characteristics of your
network cable
Example: Connecting a Mode Conditioning Patch Cord for Gigabit-LX
All twisted-pair wires used for 10 Mbps, and 100 Mbps operation must be twisted through
the entire length of the cable. The wiring sequence must conform to EIA/TIA 568-B (not
USOC). See "Twisted-Pair Cable Pin Assignments" later in this appendix for a listing of the
signals used on each pin.
For 1000Base-T connections, all four pairs of wires in the cable must be available for data
transmission. See "Note on 1000Base-T Cable Requirements" on page 38
tion on 1000Base-T cabling.
For 10 Mbps connections to the ports, you can use Category 3, 4, or 5 unshielded twisted-
pair cable, as supported by the IEEE 802.3 Type 10Base-T standard.
For 100 Mbps connections to the ports, use 100-ohm Category 5 UTP or STP cable only, as
supported by the IEEE 802.3u Type 100Base-TX standard.
For 1000 Mbps connections, 100-ohm Category 5e or better cabling is recommended.
Gigabit-LX port
Mode Conditioning
Patch Cord
Single mode section plugs into Tx
port on Gigabit-LX Transceiver or
Gigabit-LX mini-GBIC
for more informa-