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The SEGA SF-7000

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The SEGA SF-7000
SEGA SF-7000 Technical information
SEGA SC-3000 Views
SEGA SF-7000 Floppy Drive Information
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Page 4 of 5

3'' COMPACT FLOPPY DISK DRIVE TECHNICAL INFORMATION

Performance specifications

MODEL	A type
MEDIUM SIZE	3 inches
CAPACITY	Unformatted Per Side: 250 KBytes - Formatted Per Side: 164 KBytes
RECORDING DENSITY	8946 bpi
TRACK DENSITY	100 tpi
TOTAL NUMBER OF TRACKS	40
RECORDING METHOD	MFM
ROTATIONAL SPEED	300 RPM
TRANSFER RATE	250 Kbits/sec
LATENCY (AVERAGE)	171 msec
ACCESS TIME	Track to Track: 12 msec - Settling: 15 msec
MOTOR START TIME	400 msec (MAX)
INDEX	1

Installation requirements

POWER REQUIREMENTS	3.8 Watts (Op) 1.85 Watts (Stby)
ENV TEMPERATURE	4~46°C (Op) 22~50°C (Stand by)
ENV RELATIVE HUMIDITY	20~80% (Op) 10~90% (Stand by)
MECHANICAL WIDTH	90 mm. (3.54 inch)
DIMENSIONS HEIGHT	40 mm. (1.57 inch)
(NO FRONT BEZEL) DEPTH	150 mm. (5.91 inch)
(NO FRONT BEZEL) WEIGHT	750 g. (1.65 lb)
MOUNTING	Horizontal - Vertical

Reliability specifications

MT8F	3.8 Watts (Op) 1.85 Watts (Stby)
MTTR	8000 POH
COMPONENT LIFE	43.800 hours
ERROR RATES SOFT ERROR RATE	90 mm. (3.54 inch)
DIMENSIONS HEIGHT	109 bit
HARD ERROR RATE	1012 bit
SEEK ERROR RATE	106 seeks

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