Seagate STD224000N Installation Manual - Page 13

Note., Caution.

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Seagate DAT Drive Installation Manual 9 Enabling SCSI termination Active SCSI termination is disabled as the factory default. If you need to enable active termination on the drive, place a jumper on pins 11 and 12. ® Note. You need to enable the active termination if the drive is the only device on the SCSI bus or if it is the last device on the bus. Terminator power You can enable terminator power if needed for terminators or other SCSI devices through a jumper placement. The factory default for internal drives is that terminator power is disabled. To enable terminator power, place a jumper firmly over pins 15 and 16, as shown in Figure 6. ! Caution. If the jumper is installed, be careful not to short the TERMPWR signal to ground. The drive contains a terminator power fuse to prevent damage to drive components in case the terminator power is shorted. If terminator power is enabled and the SCSI cable is connected upside down for example, this fuse may blow to prevent damage to the drive. If this occurs, the drive will not longer supply terminator power to the bus. To replace the fuse, you must return the drive to an authorized repair facility. Remote SCSI Address Selection You can use pins 1 through 6 to remotely select the SCSI address. To do so, install a remote SCSI ID switch and connect it to pins 1 through 6. Pins 1 and 2 configure bit 0; pins 3 and 4 configure bit 1; and pins 5 and 6 configure bit 2. ® Note. If you use this method for ID selection, set switches S1 through S3 to the OFF position (see Figure 3 on page 5.)

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Seagate DAT Drive Installation Manual
9
Enabling SCSI termination
Active SCSI termination is
disabled
as the factory default.
If you need to enable active termination on the drive,
place a jumper on pins 11 and 12.
Note.
You need to enable the active termination if the
drive is the only device on the SCSI bus or if it is the
last device on the bus.
Terminator power
You can enable terminator power if needed for
terminators or other SCSI devices through a jumper
placement. The factory default for internal drives is that
terminator power is disabled. To enable terminator power,
place a jumper firmly over pins 15 and 16, as shown in
Figure 6.
!
Caution.
If the jumper is installed, be careful not
to short the TERMPWR signal to ground.
The drive contains a terminator power fuse to prevent
damage to drive components in case the terminator power
is shorted. If terminator power is enabled and the SCSI
cable is connected upside down for example, this fuse may
blow to prevent damage to the drive. If this occurs, the
drive will not longer supply terminator power to the bus.
To replace the fuse, you must return the drive to an
authorized repair facility.
Remote SCSI Address Selection
You can use pins 1 through 6 to remotely select the SCSI
address. To do so, install a remote SCSI ID switch and
connect it to pins 1 through 6. Pins 1 and 2 configure bit 0;
pins 3 and 4 configure bit 1; and pins 5 and 6 configure bit 2.
Note.
If you use this method for ID selection, set
switches S1 through S3 to the OFF position (see
Figure 3 on page 5.)