12
SCSI FIBER OPTIC EXTENDER
3.5 Ensuring Proper Termination
All SCSI buses require proper termination at each end of a SCSI link. Since the
SCSI Fiber Optic Extender creates two optically isolated SCSI buses, termination is
required on each side of the Extender, in addition to the standard terminators at
each end of the SCSI chain.
That’s a total of four terminators—two on each side of the Extender. If external
device termination is required, make sure that the internal termination networks
have been removed. See
Figures 5-1, 5-2,
and
5-3
to disable or enable terminators.
NOTE
The SCSI Fiber Optic Extender is shipped with termination enabled.
3.6 Connecting a Fiber Optic Cable
A duplex fiber optic cable with standard SC plugs interconnects two SCSI Fiber
Optic Extenders.
3.6.1 L
OCAL
SCSI F
IBER
O
PTIC
E
XTENDER
Insert one plug into each fiber optic socket on the rear of the local unit. Before
insertion, make sure that the “key” on each plug is facing the top of the Extender.
NOTE
Make sure that the plug is properly aligned with the connector before
inserting it. Do not force the plug into the connector, or damage will
result.
Figure 3-1. Installing SC Fiber Optic plugs.
3.6.2 R
EMOTE
SCSI F
IBER
O
PTIC
E
XTENDER
For proper operation, the fiber optic transmitter (XMT) on the local unit must be
connected to the remote fiber optic receiver (RCV). In addition, the local fiber
optic receiver (RCV) must be connected to the remote optic transmitter (XMT).
