Termination - Plextor PX-40TSe Operation Manual

YOUR TASK:
YOUR OBJECTIVE:
YOUR METHOD:
You must enable SCSI termination if the UltraPleX is the only SCSI peripheral
used with your computer. In addition, you must enable termination if you are
using multiple SCSI peripherals with your computer and the UltraPleX is
positioned as the last peripheral in a daisy chain. If you are using an Ultra SCSI
host adapter, we recommend using active termination.
NOTE: The UltraPleX uses active termination.
If you have internal SCSI peripherals only, or external SCSI peripherals only
(but not both), then you should be using an internal ribbon cable or external
cable (or cables), respectively (but not both). In this case, all devices between
the host adapter and the last peripheral on the opposite end of the ribbon
cable, or the last peripheral at the end of your daisy chain, 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 host adapter should be removed or disabled. The last peripheral on
your internal cable and the last peripheral on your external daisy chain should
retain their termination. All other SCSI peripherals connected to the host
adapter should have their termination removed, disabled, or turned off.
NOTE: Some host adapters and peripherals have the ability to disable and
enable termination power. This should not be confused with termination
itself. Termination power can and should be provided by at least one
device attached to your SCSI host adapter. Your Plextor drive
automatically supplies termination power. Any additional devices
supplying termination power will not cause any problems.
REMEMBER: Only the last SCSI peripheral in a daisy chain should have
termination enabled. If you have any SCSI devices chained after
— CHAPTER 7 —

Termination

Find the location of the SCSI termination jumper or
switch.
Determine if you must disable the SCSI termination.
Your drive was shipped with termination enabled. If
necessary, remove the termination jumper or turn off
the SCSI termination DIP switch by following the
instructions below.
ULTRAPLEX 40X OPERATION MANUAL
21