Hard Disk Drive
|Formatted Capacity||1034.6 MB|
|Average Seek||14.5 msec|
|Single Track||4 msec|
|Rotation Speed / Avg. Latency||3600 rpm +/- 0.5%|
|Transfer Rate to / from media||20 Mbits / sec|
|Transfer Rate to / from buffer||N/A|
|Tracks Per Inch (TPI)|
|Bits Per Inch (BPI)|
|Dimensions||8.0"L x 5.75"W x 3.25"H|
|+12V +/-5%||+5V +/-5%||Power|
|Spin up||4.35A (max)|
|Read / Write||2.0A avg||2.0A avg|
Drive Addressing and Interface Termination _ID2 | _ID1 | | _ID0 | | | Pin 1 J2 | | | J1 | J3 ___________ __________________________ ________ _| | | | | | | |___________|_ |__________________________|___|________| | .. .. | | W5 W4 RN9 W2 | | W1 W11 | | | | W28 | | | | | | | | | | | | Component Side | | |ID0, ID1, ID2 SCSI Address Jumpers
The SCSI ID (drive address) jumpers are identified as ID0, ID1,
and ID2. ID selection is binary, as shown in the table below.
For multiple drive installations, on one Host Adapter, each drive must
have a unique address. Drives are configured as SCSI ID 7 at the factory.
RN9 Interface Terminator
The Interface Terminator factory installed at RN9 provides
proper termination for the interface lines. When daisy-chaining
multiple drives, leave the terminator installed only in the last
physical drive (or drives) on the daisy chain cable; remove the
terminator from each of the other drives (or the host computer).
W1, W2, Terminator Option
W1 and W2 select the source of terminator power (+5V) for the
interface terminator. If a jumper is installed at W1(the factory
default configuration), and no jumper is installed at W2 the
drive provides terminator power. This configuration is used
for PC/AT applications. If a jumper is on W2 the host adapter
will supply terminator power. If a jumper is installed at W2 and
W11, and no jumper is installed at W1 the drive provides
terminator power to it's on-board terminators and also to the
SCSI bus via interface connector J1, pin 26.
W11 Bus Option
W11 allows the drive to supply interface terminator power to the
SCSI Bus. If W11 is not installed and W1 is jumpered (the factory
default configuration), the drive does supply SCSI bus interface
terminator power. W11 should not be installed for PC/AT
W5 Spindle Option
Selects the spindle control option. If W5 is jumpered, the
drive must wait for a Start Spindle command (after power is
applied) to start the spindle motor. If W5 is not installed
(the factory default configuration), the drive automatically
starts the spindle motor at power-on. W5 is not installed for
W4 Bus Parity Option
W4 selects the parity check option. If W4 is installed, the drive
neither generates nor detects parity. If W4 is not installed (the
factory default configuration), the drive generates parity and
enables parity detection. W4 is usually not installed for PC/AT
applications. Verify the correct configuration required by your
W28 Ground Options
W28(only implemented on Rev B and later boards) is used to
connect the drive's logic ground to frame ground. When at jumper
is installed at W28, frame ground is connected to logic ground.
When a jumper is not installed at W28 (the factory default
configuration), frame ground is not connected to logic ground.
For PC/AT applications, is a jumper should be installed at W28.