20 Hawk 1LP Family Installation Guide, Rev. D
Model numbers that end in "ND" have differential I/O circuits and these drives and some "NC" 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 "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.
Read/Write head auto-park
Seagate disc drives described herein mentioned in this drive park the heads automatically at power off. This feature requires no operator intervention.
Optional parity bit enable
Some systems require parity bit checking. Consult the system documentation for the specific requirements. See figure 3a for location of Parity Bit enable jumper.
Write precompensation and reduced write current
Not required on Seagate SCSI Interface drives covered by this manual.