Installing the Drive
Chapter 4
Technical Reference Manual
Page 45
Cabling the Drive - CFP2107W
Connect the SCSI interface cable and the spindle synchronization cable (when
needed) as shown in Figure 4-8.
Figure 4-8
Connecting the cabling
J1
J4
J2
E8
J3
SS
LED
68-pin
SCSI
Interface
Connection
4-pin Power
Connection
Pin 1 (typically indicated
by a colored stripe on
the cable
Pin 1
Pin 1
J5
2-mm Auxiliary
Connector
2107_4_8
J6
LED
Spindle
Synchronization
Connection
OE6, LED Connection
LED
Connection
SCSI Bus Cable
The cable and mating connector required to connect the drive to the SCSI bus
are described in Chapter 5. In addition, the cable should meet the following
guidelines, particularly with FAST SCSI-2 systems:
•
Do not route the data cable next to the drive PCB or any other high
frequency or large current switching signals. Improper drive operation can
result from improper cable routing.
•
Cable stubs should not exceed 0.1 meter (4 inches).
•
There should be 0.3 meters (12 inches) of cable between drives.
•
The total cable length should not exceed 3 meters (10 feet) and may have to
be reduced if a mixture of round and flat cable are used.
•
Do not tightly bundle excess flat cable against each other since this promotes
cross coupling of signals on the cable. Use spacers to maintain a minimum of
0.050 inches (1.27mm) gap between cable runs.
•
Do not clamp the cable tightly against a metal chassis since this will degrade
the signal. Use spacers or a non-flammable insulation material to maintain
a gap between the chassis and the cable.
