HP Model 712/100 - Workstation Technical Reference Manual page 54

HP A4068A 3.5–in. Flexible Disk Drive(PC Interface)
Capacity and Performance
Feature
Data Capacity:
Unformatted:
Formatted
Internal Data Buffer:
Data Transfer Rate:
Off Media:
Disk Performance:
Rotational Speed:
Start Time:
Ave. Latency:
Media Specification:
Density:
Sides:
Cylinders:
Track Construction:
Tracks per Side:
Tracks per Disk:
Density:
Inner Bit Density:
Positioning Error:
Access Times:
Track–to–track:
Seek settling time:
Index Detection:
Detection Cycle:
Timing Error:
Window Margin:
Environmental Requirements
Low Density
1.0 MB
720KB
@ 9 sectors/track
31KB
250 Kbits/sec
300 rpm 2%
500 msec. max.
100 msec.
2S/DD
2
80
80
160
135 tpi
8,717 bpi
< 15 um
3 msec. max.
15 msec. max
1 per rev.
200 msec 1.5%
500 usec.
600 nsec. min.
High Density
2.0 MB
1.474 MB
@18 sectors/track
31 KB
500 Kbits/sec
300 rpm 2%
500 msec. max.
100 msec.
2S/HD
2
80
80
160
135 tpi
17,434 bpi
< 15 um
3 msec. max.
15 msec. max.
1 per rev.
200 msec 1.5%
500 usec.
300 nsec. min.
High Density
1.6 MB
1.228 MB
@ 15 sectors/track
31 KB
500 Kbits/sec
360 rpm 2%
480 msec. max.
83.3 msec.
2S/HD
2
80
80
160
135 tpi
14,528 bpi
< 15 um
3 msec. max.
15 msec. max.
1 per rev.
166.7 msec 1.5%
500 usec.
300 nsec. min.