Installation guide

Terminator resistor packs
As a factory installed option, Hawk 2LP family model
"W" drives can have terminator resistor packs that are
permanently installed, but can be enabled or disabled
by jumper plug. See jumper in Figure 3a. If you are
installing a single drive, the terminator resistor packs
must remain enabled. If you are installing multiple hard
disc drives, disable the termination resistor packs from
all the drives but the one connected to the end of the
SCSI I/O cable.
Model numbers that end in "WD" and "DC" have
differential I/O circuits. These drives and "WC" model
drives have no provisions for terminators on the drive
PCB. The system manufacturer must provide some
external means of I/O line termination. The Hawk 2LP
family "W/WD" 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.
Do not mix "W" and "WD" or "WC" and "DC" model
drives on the same I/O bus.
Hawk 2LP (Wide) Installation Guide, Rev. A 19