DRIVE SERIES SPECIFICATIONS
DRIVE SPECIFICATIONS - 1650 Series
Capacity
Model Number
1653-4 1653-5 1654-6 1654-7
Unformatted Capacity (MBytes)
104.0 130.0 156.1 182.1
Disk Platters
3 3 4 4
Read/Write Heads
4 5 6 7
Formatted Capacity (MBytes)
92.0 115.0 138.0 161.0
(All other specs are common for all members of the 1650 Series)
Bytes per Sector 512
Sectors per Track 36
Cylinders 1,249
Bytes per Track 20,832
PC Drive Types
If you are using third-party installation software or an on-board BIOS on the controller, follow the instructions included with the software or controller. Otherwise, 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.
Performance
Seek Time (including settling time)
Track-to-Track 4 msec
Average 16 msec
Maximum 37 msec
Avg. Rotational Latency 8.33 msec
Rotational Speed 3600 rpm +/- 0.5%
Data Transfer Rate 10 Mbits/sec
MTBF (power-on hours) 150,000
Positioner Fully balanced rotary voice coil
Parking Automatic park and lock
General Functional Specifications
Form-Factor 5 1/4-inch, "half-height"
Interface ESDI
Sectoring Hard or Soft (set by W1)
See Configuration Information
Write Precompensation Start Cylinder 1249 *
Reduced Write Current Start Cylinder 1249 *
* These are effectively turned off by specifying a non-existent cylinder.
Some systems accomplish this by using a value of "-1".
Landing Zone 1249
Mounting Plane Any orientation
Drivers/Receivers Single-ended
Power Requirements
+12V +/-5% 0.9 A average
+12V +/-5% (max. during start-up) 2.0 A
+5V +/-5% (average) 0.7 A
Power Dissipation, typical 14 Watts
(Board Layout and Jumper Options)
Drive Warranty Information