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46 Cheetah 9 Installation Guide, Rev. B
W/WD drives
Terminator power
There are three possible terminator power (TP) configurations
for “W” model drives (see Figure 14). You will not normally need
to change this option and can leave the drive configured as it
was shipped from the factory.
There are two possible terminator power (TP) configurations for
“WD” model drives (see Figure 14).
Figure 14. Setting terminator power jumpers
Term. Power from Drive (default)
Term. Power to SCSI Bus
Term. Power from SCSI Bus (position A)
T
E
D
S
M
E
W
P
P
D
R
E
S
T
P
2
T
P
1
“W” Models
J2
SCSI I/O
Connector
DC Power
Connector
J2
Pin 1
Drive
Front
J6
J1
Pin 1
Pin 2
Term. Power to SCSI Bus (default)
“WD” Models
Host adapter or other device provides
term. power to external terminator.
Term. Power to SCSI Bus and Drive
J2 Jumper
(enlarged to
show detail)