Hard Disk Drive
|Formatted Capacity||2,050 MB|
|Average Seek||8.9. msec|
|Rotation Speed/Avg. Latency||7200 rpm +/- 0.5%|
|Transfer Rate to / from. media||20 Mbytes/sec Synchronous|
|Transfer Rate to / from buffer|
|Tracks Per Inch (TPI)|
|Bits Per Inch (BPI)|
|Dimensions||5.75"D x 4.0"W x 1.0"H|
|+12V +/-5%||+5V +/-5%||Power|
|Read / Write||1.52A||1.2A|
|Typical seeking||13.5 Watts|
|Configuration and Jumper Options
SCSI ID Selection
Up to sixteen devices (the host and fifteen targets) can be attached to the SCSI bus.
These are selected with jumpers on the Option Jumper Block or on Auxiliary
Connector J1B (use either but not both); see the Note below the J1B drawing for J1B usage.
In multiple-device systems, each device must have its own Unique SCSI ID.
The SCSI ID (drive address) jumpers are identified as ID0, ID1, ID2, and ID3.
ID selection is binary, as shown below.
An external terminator provides termination for the interface lines.
Suggested end-of-cable terminator: Methode DS2050-01-68D
If a jumper is installed at W1 (Default), the drive provides terminator power (TERMPWR) to the bus.
If the jumper is omitted, the host system provides TERMPWR.
A user-supplied LED may be connected to Remote LED (Pins 1 and 2).
Jumpers at SP0 (Pins 11 and 12) and SP1 (Pins 13 and 14) control the spindle options.
A jumper at WP (Pins 15 and 16) selects the write protect option.
A jumper at PTY (Pins 17 and 18) selects the bus parity check option.
The drive always generates parity regardless of this option.
Spindle Sync Signals
Use of the MSYNC and SSYNC signals is optional.
These signals are used as spindle synchronization reference.
Auxiliary Connector J1B