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Chapter 5: Connecting to the Network
5-2 SEHI User’s Guide
• Label the fiber optic cable to indicate which fiber is receive and which
is transmit. Cabletron Systems fiber optic cable is labeled so that one
fiber is labeled 1, and the other fiber is labeled 2 at both ends of the
cable. If the cable was not purchased from Cabletron Systems, label
the cable as described above.
Use the following steps to connect a fiber optic link segment to the SEHI:
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 the fiber labeled 1 to the applicable RX port, on the SEHI. See
Figure 5-1.
Figure 5-1 SEHI-22FL Network Ports
!
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.
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12
RX
TX
RX
TX
RX
TX
RX
TX
RX
TX
RX
TX
1
2
3
4
5
6
RX
TX
RX
TX
RX
TX
RX
TX
RX
TX
RX
TX
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2
1
SEHI Book Page 2 Friday, April 19, 1996 10:46 AM