Seagate CHEETAH 18 ST118202LW/LC Installation Manual page 44

Scsi disc drives
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42
LW drives
Other applicable jumper options
Several other jumper options are available as illustrated.
Reserved
Single-Ended Mode option
Use single-ended or low voltage differential mode.
Force the drive to operate only in single-ended mode.
Delay Motor Start option
(valid only if the Enable Motor Start jumper is not connected)
Disable the Delay Motor Start option (default).
Motor start delay equal to the SCSI ID multiplied by 12 seconds.
For example, if the SCSI ID = 2, the drive starts in 24 seconds.
Motor Start option
Disable motor start (default). The drive starts according to the
Delay Motor Start option.
Enable motor start. The drive waits for the Start Unit command
from the host before starting the spindle motor.
Write Protect option
Write protect = Off (enables writing – default).
Write protect = On (disables writing).
Parity Check option
Enable parity check of SCSI bus (default).
Disable parity check.
Cheetah 18 Installation Guide, Rev. A
J2 Jumper Plug
(enlarged to
show detail)
J2
S
D
M
E
S
E
J2
J6
Drive
Front
Pin 1
Pin 2
R
R
W
P
E
E
T
P
D
S
S
P

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