CONNECTING TO THE NETWORK
TPXMIM Installation Guide
Page 33
3.5.5
Connecting a Fiber Optic Cable to an EPIM-F1/F2,
or EPIM-F3
When connecting a fiber optic link segment to an EPIM-F1/F2, or
EPIM-F3 keep the following in mind:
• When connecting a fiber optic link segment with SMA 906
connectors to an EPIM-F1 with SMA ports, make sure each
connector uses half alignment, NOT full alignment, sleeves.
Warning: A full alignment sleeve damages the receive port. SMA
905 connectors do not need alignment sleeves.
• When connecting a fiber optic link segment with ST connectors to
an EPIM-F2 with ST ports, keep in mind that ST connectors attach
to ST ports much like BNC connectors attach to BNC ports. Insert
the connector into the port with the alignment key on the connector
inserted into the alignment slot on the port. Turn the connector to
lock it down.
• The physical communication link consists of two strands of fiber
optic cabling: the Transmit (TX) and the Receive (RX). The
Transmit strand from a module port connects to the Receive port of
a fiber optic Ethernet device at the other end of the segment (i.e., TX
of the applicable port on the module goes to RX of the other fiber
optic device). The Receive strand of the applicable port on the
module connects to the Transmit port of the fiber optic Ethernet
device (i.e., RX of the applicable port on the module goes to TX of
the other fiber optic device).
We recommend labeling fiber optic cables to indicate Receive and
Transmit ends. Cabletron Systems prelabels its cable. At one end of
the cable, one fiber is labeled 1, and the other fiber is labeled 2. This
pattern repeats at the other end of the cable. When not purchasing
cable from Cabletron Systems, label your cable in this manner.
