Plextor PlexWriter 8/2/20, Руководство по эксплуатации

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Section 2. Installing Your PlexWriter
18
PlexWriter 8/2/20 Operation Manual
If you have internal SCSI peripherals only, then you should be using an internal
ribbon cable. In this case, all devices between the SCSI host adapter and the last
peripheral on the opposite end of the ribbon cable should have their termination
removed, disabled, or turned off.
If you have both internal and external SCSI peripherals (both the internal and
external connectors of your host adapter are used), then the termination of your SCSI
interface board should be removed, disabled or turned OFF. The
last
peripheral on
your internal cable and the
last
peripheral on your external SCSI chain should retain
their termination (have it set ON). All other SCSI peripherals connected to the host
adapter should have their termination removed, disabled, or turned off.
NOTE:
The SCSI interface board that is bundled in the Plextor kits has Auto
Termination, so turning off its termination is unnecessary. However, you still must
sometimes specify termination ON or OFF on the PlexWriter drive, as discussed on
page 13.
Setting Switches on an External PlexWriter Drive
Use this procedure if you have a PlexWriter external drive. (However, if you already
have a SCSI board installed, an external PlexWriter is the only SCSI peripheral you
will use with your computer, and you do not need to change any settings, skip now to
“Install an External PlexWriter Drive” on page 28.)
Factory Switch Settings
A rear-panel rotary dial controls the SCSI ID setting of the external PlexWriter drive,
and other settings are controlled by DIP switches. Figure 7 shows the factory settings
of the rear-panel dial and switches.
Figure 7: Factory Settings for the Dial and DIP Switches on the External Drive
CAUTION : Turn the drive’s power OFF before changing the setting of the SCSI dial
or the DIP switches.