Specifications: Sony MPF920-E
1.44-MB Diskette Drive
General | Performance | Recording
Parameters | Electrical | Size and Weight | Environmental Limits | Reliability | Regulatory
Notices
|
| Manufacturer |
Sony |
| Model number |
MPF920-E |
| Capacity |
2 MB (1.44
MB) on 2HD*
1 MB (720 KB) on 2DD* |
| *
The capacities in parentheses are based on the IBM�
format. Dell supports only the IBM format. Dell does NOT support
the 2-MB or 1-MB format. |
|
| Data transfer
rate: |
|
2-MB mode
|
500,000
bits/sec (for MFM) |
1-MB mode
|
250,000
bits/sec (for MFM) |
| Access times: |
|
Average access time
|
94 ms |
Track-to-track slew rate
|
3 ms |
Head settling time
|
15 ms
(maximum) |
| Rotational
speed |
300 rpm �
1.5% |
| Motor start
time |
500 ms
(maximum) |
| Rotational
latency |
100 ms
(average) |
| Speed change
time |
200 ms
(maximum) |
|
| Cylinders |
80 |
| Tracks |
160 |
| Read/write
heads |
2 |
| Track density |
135 tpi |
| Recording
density: |
|
2-MB mode
|
17,434 bpi |
1-MB mode
|
8,717 bpi |
|
| Supply
voltage |
+5.0 V � 10% |
| Power
consumption: |
|
Standby
|
17 mW
(maximum) |
Operational
|
1.5 W
(typical) |
| Current load: |
|
Standby
|
3 mA
(maximum) |
Read/write mode
|
300 mA
(typical) |
Motor start
|
930 mA
(maximum) |
Step during motor rotation
|
960 mA
(maximum) |
|
| Height |
25.4 mm (1.0
inch) |
| Width |
101.6 mm (4.0
inches) |
| Depth |
144.0 mm (5.7
inches)* |
| Weight |
430 g (0.95
lb) |
| *
Front-panel thickness and eject button not included |
|
| Temperature: |
|
Operating
|
5� to 50�C (40� to 122�F) |
Nonoperating
|
-40� to 60�C (-40� to 140�F) |
| Relative
humidity:1 |
|
Operating
|
8% to 80%
(noncondensing) |
Nonoperating
|
5% to 95%
(noncondensing) |
| Vibration:2 |
|
Operating
|
10 to 500 Hz
at maximum of 0.5 G |
Nonoperating
|
10 to 500 Hz
at maximum of 2.0 G |
| Shock:3 |
|
Operating
|
5.0 G for 11
ms |
| Nonoperating |
70 G for 11 ms |
1 Wet bulb at 29�C
2
Continuous along each mutually perpendicular axis
3 Half-sine wave along mutually perpendicular
axes |
|
| MTBF |
30,000 POH |
| MTTR |
30 minutes |
| Preventive
maintenance |
not required |
| Component
life |
5 years or
15,000 POH |
| Error rate: |
|
Soft read errors
|
1 per 10E9
bits read |
Hard read errors
|
1 per 10E12
bits read |
Seek errors
|
1 per 10E6
seeks |
