EUROCOM 6X00, Service Manual, Page: 87 / 107

80
3.5” Floppy Disk Drive
Panasonic JU-226A03F FDD
Capacity Normal Density High Density
(in bytes) (MFM) (MFM)
Unformatted
Per Disk 1,000,000 1,666,666 2,000,000
Per Surface 500,000 833,333 1,000,000
Per Track 6,250 10,416 125,000
Formatted (16 sectors/track, 32 sectors/track)
Per Disk 655,360 1,310,720
Per Track 4,096 8,192
Per Sector 256 256
Formatted (9 sectors/track, 18 sectors/track)
Per Disk 737,280 1,474,560
Per Track 4,608 9,216
Per Sector 512 512
Formatted (15 sectors/track)
Per Disk 1,228,800
Per Track 7,680
Per Sector 512
Transfer Rate 250 kbits/s 500 kbits/s 500 kbits/s
Latency (avg.) 100 ms 83 ms 100 ms
Access Time
Track to Track 3 ms 3 ms 3 ms
Average (including settling and latency) 194 ms 177 ms 194 ms
Settling Time 15 ms 15 ms 15 ms
Minimum Turn Around Delay 18 ms 18 ms 18 ms
Motor Start Time 500 ms 500 ms 500 ms
Motor Rotation Select Delay 500 ms 500 ms 500 ms
Dimensions (including front panel)
Width 101.6 mm
Height 12.7 mm
Depth 110.0 mm