Micropolis 1300-Series

DRIVE SERIES SPECIFICATIONS

DRIVE SPECIFICATIONS - 1300 SERIES

Capacity

Model Number
	1302	 	1303	 	1304

Unformatted Capacity (MBytes)
	25.9		43.2		51.9

Disk Platters
	2		3		4

Read/Write Heads
	3		5		6

Formatted Capacity (MBytes; 32 Sectors, 256 Bytes per Sector)
	20.4		34.0		40.8


(All other specs are common for all members of the 1300 Series)

	Bytes per Track		8,192

	MBytes per Surface	6.8

Note that all drives from 13xx series are based on the same chassis. Please refer to other models, like model 1325 and the respective series overview pages for more technical info: 1320 series, 1350 series, 1370 series

The 1300 series are MFM drives with an ST-412 interface.

PC Drive Types

Examine the entries in your system drive table and find the type that most resembles the head and cylinder parameters of the drive without exceeding these parameters. If you are using third-party installation/partitioning software, follow the instructions included with the software, as it may perform this step automatically.

Performance

Data Rate

	Seek Time (including settling time)

		Track-to-Track		6 msec

		Average			30 msec

		Maximum			60 msec


	Avg. Rotational Latency		8.33 msec

	Rotational Speed		3600 rpm +/- 0.5%


	Data Transfer Rate		5 Mbits/sec

	Optimum Step Rate		20 microseconds or faster (buffered seek)


	MTBF (power-on hours)		20,000


	Positioner			Fully balanced rotary voice coil

	Parking				Automatic park and lock

General Functional Specifications

	Form-Factor				5 1/4-inch, "full-height"


	Interface				ST-506/412

	Encoding Method				MFM (Modified Frequency Modulation)
		Although these drives may be capable of functioning in an RLL environment,
		Micropolis does not certify or warrant them for this application.

	Sectoring				Soft

	Write Precompensation Start Cylinder	830
	Reduced Write Current Start Cylinder	830
	Landing Zone				830


	Mounting Plane				Any orientation

Power Requirements

	+12V +/-5% (average, idle)		1.9 A

	+12V +/-5% (average, seeking)		2.9 A

	+12V +/-5% (max. during start-up)	3.7 A

	+5V +/-5% (average)			0.9 A


	Power Dissipation, Stand-by		27 Watts

	Power Dissipation, Positioning		35 Watts

Drive Configuration Information

(Board Layout and Jumper Options)