Black Box SC120A-R2 Manual De Usuario
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CHAPTER 5: Configuration and Operation
5.3 Selecting Internal Terminator Power
On-board SCSI Switch terminators can be powered by internal 5-volt power or
externally from SCSI-bus “terminator power” (TERMPWR).
externally from SCSI-bus “terminator power” (TERMPWR).
Figure 5-4. Internal terminator-power jumpers.
Table 5-1. Jumper settings for internal termination.
SC120A-R2
SC121A
E14-Port A
E20-Port 1
E15-Port A
E21-Port 1
E13-Port B
E19-Port 2
E16-Port B
E22-Port 2
NOTE
The standard factory default connects internal terminators to internal
5 volts.
5 volts.
5.4 Selecting External Terminator Power
The SCSI Switch can supply external terminator power via an internal resettable
fuse. This fuse supplies 1 amp at 5 volts to the terminator-power (TERMPWR)
signal. The SCSI Switch contains internal protection and will not be affected if
other SCSI devices provide terminator power.
fuse. This fuse supplies 1 amp at 5 volts to the terminator-power (TERMPWR)
signal. The SCSI Switch contains internal protection and will not be affected if
other SCSI devices provide terminator power.
Figure 5-5. External terminator-power jumpers.
NOTE
Factory default is “Enabled” on all ports.
Internal 5V
1
2
3
External
Terminator
Power
E13, E14, E19, E20
or
E15, E16, E21, E22
E5, E6, E21, E22
or
E17–E20