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Connecting the SEHI to the Network
SEHI User’s Guide 5-5
If a link is not established, contact Cabletron Systems Technical Support.
5.1.3 Connecting a Fiber Segment to an EPIM-F1/F2/F3
When connecting a fiber optic link segment to an EPIM-F1, F2, or F3
keep the following in mind:
• When connecting a fiber optic link segment with SMA 906 connectors
to an EPIM-F1 with SMA ports, ensure that the half alignment sleeves
(shown in Figure 5-3) are in place on each connector. A full alignment
sleeve will damage the receive port. SMA 905 connectors do not need
alignment sleeves.
• Connect a segment with ST connectors to an EPIM-F2 or EPIM-F3 by
inserting the connector into the port with the alignment key on the
connector inserted into the alignment slot on the port. Turn the
connector clockwise to lock it down.
• The physical communication link consists of two strands of fiber optic
cabling: the Transmit (TX) and the Receive (RX). The TX strand from
the applicable port on the module connects to the receive port of a fiber
optic Ethernet device at the other end of the segment. The RX strand
of the applicable port on the module connects to the transmit port of
the fiber optic Ethernet device.
• Label the fiber optic cable to indicate which fiber is receive and which
is transmit. Fiber optic cable purchased from Cabletron Systems is
labeled so that one fiber is labeled 1, and the other fiber is labeled 2 at
both ends of the cable. For cable not purchased from Cabletron
Systems, label the cable as described above.
!
CAUTION
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 causes problems in data
transmissions. If the ends become contaminated, clean them
with alcohol using a soft, clean, lint free cloth.
SEHI Book Page 5 Friday, April 19, 1996 10:46 AM