Specifications for Fibre Optic Cables and Connectors
The Advanced SSA Optical Extenders can drive single-mode operations and multi-mode
operations. Fibre optic cables and connectors must be to the following specifications:
Fibre optic cables for
single-mode operations
9/125 microns
Fibre optic cables for
multi-mode operations
50/125 microns or 62.5/125 microns
Note: Each type of cable needs a particular type
of multi-mode conditioner (see the Parts Catalog
in Chapter 4, “Parts Catalog”).
Connector type
ST2 (preferred for all new installations) or ST
Uniter type (multi-mode only)
ST2
Maximum permitted length
between two SSA nodes (for
example, disk drives)
3 kilometers (9842 feet) for multi-mode operations,
but see also Note.
10 kilometers (32800 feet) for single-mode operations,
but see also Note.
Note: Lengths of 3 kilometers and 10 kilometers
are permitted only if the fibre optic connection is
between:
v
Two 7133s Model D40 or T40
v
A 7133 Model D40 and a 7133 Model T40
v
A 7133 Model D40 or T40 and an Advanced
SerialRAID Adapter
v
A 7133 Model D40 or T40 and an Advanced
SerialRAID/X Adapter
v
Two Advanced SerialRAID Adapters
v
Two Advanced SerialRAID/X Adapters
Otherwise, the maximum permitted length for
single-mode and multi-mode operations is 2.4
kilometers (7874 feet).
Optical Extender Lights
Power light: This light is on when the +5-volt input is present.
Receive light: This light shows that light is being received at the input connector of the
optical extender. The received light might not be a valid SSA signal.
26
7133 Models D40 and T40 Service Guide
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