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Product Manual - Hawk 4 Family (Wide) SCSI-2 (Volume 1), Rev. E
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J2
Jumper
Installation
Jumper Function Description
TE
(Applies only to "W" models)
On
With the jumper installed, the On-board (non-removable) terminator circuits are enabled
(connected to the I/O lines). Default is jumper installed.
Off
Terminator circuits not connected to I/O lines.
DS
ME
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.
WP
On
Entire drive is write protected.
Off
Drive is not write protected. Default is no WP jumper installed.
PE
On
Parity checking and parity error reporting by the drive is enabled. Default is PE jumper
installed.
Off
Drive checks parity, but does not report result of parity checking to host.
SS
Off
Reserved jumper position. Default is no jumper installed.
TP
TP
(Not used on "WC/DC" models)
Off
Off
No terminator power is connected to drive terminators or SCSI bus.
On
Off
Drive supplies its own terminator power only. Jumper on this position is factory default.
Off
On
Drive supplies power to SCSI bus; pins 17, 18, 51 and 52 none to internal terminators. When
drives have differential I/O circuits, a jumper on the right TP position may be needed to power
external terminators (see system documentation). The ST15230WD drive has differential
I/O circuits which have no terminator circuits on the drive. The "WC/DC" models have no
provisions for terminators on the drive and no provisions for terminator power to be supplied
to the 80 pin I/O connector on the drive.
On
On
Drive supplies terminator power to itself (internal connection) and to SCSI bus pins 17, 18,
51 and 52. This is a legal jumper setting.
35
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