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Hawk 2LP Family Installation Guide, Rev. A
19
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Bus termination
Model "N" drives have an active terminator IC that is perma-
nently installed, but can be enabled or disabled by a jumper
plug. See jumper in Figure 3a. If you are installing a single
drive, the terminator IC must remain enabled. If you are
installing multiple hard disc drives, disable the termination IC
on all the drives but the one connected to the end of the SCSI
I/O cable.
Model numbers that end in "ND" have differential I/O circuits.
These drives have no provisions for terminators on the drive
PCB. The system manufacturer must provide some external
means of I/O line termination. The "ND" model drives can
provide power for external terminators if the TP jumper is
installed on the last position on the right end of J2. See Figure
3a.
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