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DSP2022-S SCSI Disk Drive Installation Guide
Learn the Jumper Functions
The jumper functions on the SCSI drive are described
in Table 3. These jumpers allow you to set the device
address, disable automatic spin-up, change the delay time
before spin-up, and enable drive power for an external SCSI
terminating resistor. The drive is shipped with all jumpers
installed.
Table 3
Jumper Descriptions
Jumper Function
Jumper
Status
0
Device Address bit 0
See Table 4
1
Device Address bit 1
See Table 4
2
Device Address bit 2
See Table 4
3
Enables automatic spin up
when power is applied
IN
Disables automatic spin up
when power is applied
OUT
4
Disables spin-up delay timer.
IN
Enables spin-up delay timer
of 10 seconds times the SCSI
ID. The delay is valid only
when automatic spin up is
enabled.
OUT
5
Reserved
IN
6
Prevents the manufacturing
test from being initiated if pin
A1 is grounded.
OUT
7
Enables drive power to an
external SCSI bus terminator
IN
Disables drive power to an
external SCSI bus terminator
OUT
