B-4 Specification
DISKETTE DRIVE SPECIFICATIONS
Table B-4 lists the specifications for the diskette drives.
Table Appendix B -4 Specifications for Diskette Drives
Features
OSDA-90C 1.44-MB
FD1158C 1.2 MB
Storage Capacity
Unformatted
2.0 MB
1.67 MB
Formatted
1.44 MB
1.2 MB
Recording Density
Bit density
17,434 bpi
9870 bpi max
Track density
135 tpi
96 tpi
Number of Cylinders
80
80
Number of Tracks
160 (80 tracks x 2 sides)
160 (80 tracks x 2 sides)
Recording Method
MFM
MFM/FM
Disk Speed
300 rpm
360 rpm
Data Transfer Rate
500/250k bps
500/250k bps
Access Time
Average seek
94 ms
94 ms
Minimum seek
3 ms
3 ms
Head load
Non-head load
35 ms max
Dimensions
Height
1.0 in. (25.4 mm)
1.0 in. (25.4 mm)
Width
4.9 in. (101.6 mm)
5.7 in. (146 mm)
Depth
5.9 in. (150 mm)
7.4 in. (190 mm)
Weight
1.0 lb (0.63 kg)
1.5 lb (0.67 kg)
Operating Temperature
41° to 113°F (5° to 45°C)
39° to 115°F (4° to 46°C)
Relative Humidity
Tolerance Range
20% to 80%
20% to 80%
Power
+12 Vdc
Not Used
1.19 A (start up)
+5 Vdc
0.87 A (start up)
0.09 A (start up)
Power Consumption
1.5 W (operating)
2.6 W (operating)
Error Rate
Recoverable
1 per 10
-9
1 per 10
-9
Non-recoverable
1 per 10
-12
1 per 10
-12
Seeks
1 per 10
-6
1 per 10
-6
Mean Time Between
Failures
12,000 hours
12,000 hours
Summary of Contents for POWERMATE P60D - SERVICE
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