Cabletron Systems 38, User Manual

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Document Conventions
FOMIM User’s Guide 1-3
1.2 DOCUMENT CONVENTIONS
The following conventions are used throughout this document:
1.3 FIBER OPTIC MEDIA INTERFACE MODULES
Cabletron Systems Fiber Optic Media Interface Modules provide a choice
of six, twelve, or eighteen ports with ST connectors.
1.3.1 Distance and Cable Type
The FOMIMs support single mode fiber optic cable for sizes such as
8.3/125
µ
m, 8.7/125
µ
m, 9/125
µ
m, 10/125
µ
m, and 12/125
µ
m. The
cable distance is dependent on the cable type and the overall system fiber
optic budget. If the system budgets and timing constraints are met, then a
distance of up to 5 kilometers is possible. You can also use 62.5/125
µ
m
multimode cable with the FOMIM, but due to greater optical loss, signal
distance is reduced to 2 km.
NOTE
Note symbol. Calls the reader’s attention to any item of
information that may be of special importance.
!
C AUT IO N
Caution symbol. Contains information essential to avoid
damage to the equipment.
Warning symbol. Warns against an action that could result in
equipment damage, personal injury or death.
NOTE
The FOMIM-32/36/38 use 1300 nm wavelength transmitters
and receivers (not the 850 nm specified by FOIRL) and should
be used only with the Cabletron Systems Ethernet single mode
transceiver, the FOT-F3.