Installing The Patch Cord; Twisted-Pair Cable/Connector Pin-Outs - HPE OfficeConnect 1920S Series Installation And Getting Started Manual

NOTE:
Most of the time, if you are using good quality graded-index multimode fiber cable that adheres to
the standards listed in this appendix, there should not be a need to use mode conditioning patch
cords in your network. This is especially true if the fiber runs in your network are relatively short.

Installing the Patch Cord

As shown in the illustration below, connect the patch cord to the transceiver with the section of single
mode fiber plugged in to the Tx (transmit) port. Then, connect the other end of the patch cord to your
network cabling patch panel, or directly to the network multimode fiber.
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.
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To network multimode cabling
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Gigabit-LX port
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Single mode section plugs into Tx port on Gigabit-LX transceiver or Gigabit-LX mini-GBIC
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The multimode cable in the patch cord must match the characteristics of your network cable
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

The Auto-MDIX Feature:
In the default configuration, "Auto", the fixed 10/100/1000BASE-T ports on the switches 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
40 Installing the Patch Cord
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