Specifications

B-10 System Specifications
Diskette Drive
NEC Diskette Drive FD1231H-013, 3 1/2-inch, 1.44 MB
Recording capacity
— High density mode:
Unformatted: 2.00/1.00 MB
Formatted: 1440 KB (512B 18 Sec)
720 KB (256B 18 Sec)
— Normal density mode:
Unformatted: 1.00/0.50 MB
Formatted: 640 KB (256B 16 Sec)
20 KB (128B 16 Sec)
Data transfer rate
— High density mode: 500/250 Kbit/sec
— Normal density mode: 250/125 Kbit/sec
Disk speed — 300 rpm
Number of tracks — 160 (80 tracks x 2 sides)
Maximum bit density
— High density mode: 17434/8717 BPI
— Normal density mode: 8717/4359 BPI
Seek time — 3 ms
Tracks per inch — 135 TPI
Recording mode — MFM/FM
Temperature, operating — 4° to 46°
Relative humidity — 20% to 80%
Dimensions — 25.4 mm x 101.6 mm x 146 mm
Weight — 430 grams (typical).