Technical Information 1-35
Table 1-19 Diskette Drive Specifications
Feature
Specification
Diskette Drive
NEC Diskette Drive FD1231H
Performance
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)
320 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
Head Setting Time
15 ms
Tracks per Inch
135 TPI
Recording Mode
MFM/FM
General Specifications
Temperature
Operating: 4
°
to 46
°
Relative Humidity
20
°
to 80
°
Dimensions (W x H x D)
25.4 mm x 101.6 mm x 146 mm
Weight
430 grams (typical)