Cabletron Systems FOMIM-32 - Manual (Page 19)

Chapter 2: Network Requirements and Installation
2-4 FOMIM User’s Guide
2.4 CONNECTING FIBER OPTIC CABLING TO THE
FOMIM
Each fiber optic 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. The receive strand of the applicable port on the
module connects to the transmit port of the fiber optic Ethernet device.
Cabletron Systems recommends labeling fiber optic cables to indicate
receive and transmit ends. Many cables are prelabeled, providing
matching labels or tapes at both ends of each strand of cable.
1. Remove the protective plastic covers from the fiber optic ports on the
applicable port on the module, and from the ends of the connectors on
each fiber strand.
2. Attach one fiber to the applicable receive port on the module. Insert
the ST connector into the port with the alignment slot on the connector
clockwise to lock it down.
Figure 2-2 ST Connector Insertion
3. Attach the other fiber of the pair to the applicable transmit port on the
module. Use the same procedure for insertion of the ST connector.
!
C AUT IO N
Do not touch the ends of the fiber optic strands, and do not let
the ends come in contact with dust, dirt, or other contaminants.
Contamination of the ends can cause problems in data
transmissions. If the ends become contaminated, clean them
with denatured alcohol using a soft, clean, lint free cloth.