9000

48 Chapter 3

Installing the HP HSC FDDI/9000 Adapter

Connecting the Adapter to the Network

Keep the dust cap(s) on the ends of the cable and on the transceivers of

the adapter until the connections are ready to be made. This prevents

dirt and oils from soiling any important surfaces. Do not attempt to

polish the connectors with a cloth made of synthetic ﬁbers; this charges

the ﬁber and attracts dust.

When connecting a ﬁber optic cable, do not stretch, puncture, or crush

the cable with staples or heavy equipment. Always maintain the

minimum bend radii speciﬁed by the cable manufacturer. The ﬁber in

ﬁber optic cable can suffer damage if the cable is bent in small radii. The

minimum bend radius is usually 10-20 times a cable’s outer diameter.

CAUTION Do not force the connectors when attaching the cable — they are keyed

connections and ﬁt one way only.

There are two ways to connect the adapter to the FDDI network. It can

be connected directly to the adjacent stations in a dual-ring network or to

a concentrator (DAC or SAC), typically dual-homed for additional fault

tolerance. You can use either SC-to-SC duplex cables or SC

duplex-to-MIC adapter cables with MIC-to-MIC cables.

You can use an Optical Bypass Switch (OBS) between the adapter and

the dual ring. An OBS maintains continuity of the primary and

secondary ring when the station is powered down, or in the event of an

adapter failure.

Signals must be routed such that the primary Tx output from each

station is routed to the primary Rx input of its neighbors, and the

secondary Tx output is routed to the secondary Rx input of the other

neighbor, and so forth, as shown in Figure 3-5.