Other applicable jumper options

42	Cheetah 18 Installation Guide, Rev. A

Several other jumper options are available as illustrated.

R R

S D M W P E E T

E S E P D S S P

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).

Pin 1

Pin 2

Write protect = On (disables writing).

Parity Check option

Enable parity check of SCSI bus (default).

Disable parity check.

J2 Jumper Plug

(enlarged to show detail)

Drive

Front