Seagate ST3146855LW ユーザーズマニュアル

42

Cheetah 15K.5 SCSI Product Manual, Rev. J

J6 does not exist on the LC model and is supported on the LW model only.

 

 

 

 
Jumper function description

On

Forces drive to use single-ended I/O drivers/receivers only.

Off

Drive can operate on the interface in low voltage differential mode or single-ended, depend-
ing on the voltage state of the I/O “DIFFSNS” line. Default is SE jumper not installed.

Off

Off

Spindle starts immediately after power up - Default setting.

Off

On

Drive spindle does not start until Start Unit command received from host.

On

Off

Spindle Startup is delayed by SCSI ID times 12 seconds after power is applied, i.e., drive 0 
spindle starts immediately when DC power connected, drive 1 starts after 12 second delay, 
drive 2 starts after 24 second delay, etc.

On

On

Drive spindle starts when Start Unit command received from host. Delayed start feature is 
overridden and does not apply when ME jumper is installed.

On

Entire drive is write protected.

Off

Drive is not write protected. Default is WP jumper not installed.

On

Parity checking and parity error reporting by the drive is disabled.

Off

Drive checks for parity and reports result of parity checking to host.

Default is PD jumper not installed.

Off

Reserved jumper position. Default is no RES jumper installed.

Off

The drive does not supply terminator power to external terminators or to the SCSI bus I/O 
cable.

On

Drive supplies power to SCSI bus I/O cable. When drives have differential I/O circuits, a 
jumper on the TP position may be needed to power external terminators (see system docu-
mentation). These drives do not have terminator circuits on the drive.