HP 3000 Series Handbook page 87

For HP Internal Use Only
Table 4-18. J2 Jumper Function Description
Jmnper
Jumper F'unction Description
TP TP
Off Off
No terminator power is connected to drive terminators or SCSI bus I/0 pin 26.
On Off Drive supplies its own terminator power only.
Off On
Drive supplies power to I/0 pin 26 of SCSI bus, none to internal terminators.
On On Drive supplies terminator power to itself (internal connection) and to I/0 pin 26 of
SCSI bus.
TP POSITION
A
On This horizontally positioned jumper across the two TP positions nearest the PCB
edge connects terminator power from SCSI bus I/0 pin 26 to the drive's internal
terminators. (For single-ended only.) Set if it is the last device on the bus.
RES
Off Reserved.
PE
On
Parity checking and parity error reporting by the drive is enabled.
Off Drive does not report result of parity checking to host.
WP
On
Entire drive is write protected.
Off Drive is not write protected.
DS ME
Off
Off Spindle starts immediately after power up.
Off On
Drive spindle does not start until Start unit command is 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 is connected, drive 1 starts after
12-second delay, drive 2 after 24-second delay, etc.
On On
Drive spindle starts when Start Unit command is received from the host. Delayed
start feature is overridden and does not apply when the ME jumper is installed.
RES
Off Reserved
4-36 Configuration