Samsung SFD-321B specifications Performance, LOW High E M Density Standard Option

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FLOPPY DISK DRIVE SPECIFICATION

PAGE

4

 

 

MODEL

SFD-321B

 

 

2.GENERAL SPECIFICATIONS

2.1Performance

 

 

 

 

 

 

 

LOW

HIGH

 

HIGH

 

 

 

I T E M

 

DENSITY

DENSITY

 

DENSITY

 

 

 

 

STANDARD

STANDARD

 

*OPTION*

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1MB

2MB

 

1.6MB

 

 

 

 

 

 

 

 

 

 

 

 

 

Unformatted

 

Per Disk

1000

2000

 

1600

 

 

 

 

 

 

 

 

 

 

 

Per Track

6.25

12.5

 

10.0

 

 

 

 

 

 

 

Capacity

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

655.4 (16)

1310.7 (32)

 

1065.0 (26)

(KBytes)

 

 

 

 

 

 

 

 

 

Formatted

 

Per Disk

 

 

 

 

 

 

 

 

737.3 (9)

1474.6 (18)

 

1228.8 (15)

 

 

 

 

(Sector / Track)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

819.2 (5)

1638.4 (10)

 

1310.7 (8)

 

 

 

 

 

 

 

 

 

Recording Density (BPI)

 

8,717

17,434

 

14,528

 

 

 

-Inner Most Track, side 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Data Transfer Rate (KBits / sec)

250

500

 

 

 

 

 

 

-MFM recording

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Number of Heads

 

 

2

 

 

 

 

 

 

 

 

 

Number of Tracks

 

 

160

 

 

 

 

 

 

 

Track Density (TPI)

 

135TPI (5.33 Tracks / mm)

 

 

 

 

 

 

 

 

 

 

 

Rotational Speed

300 RPM

 

360 RPM

 

 

 

 

 

 

 

 

 

 

Drive Motor

 

 

LSV

 

 

± 1.5 % Max.

 

 

 

 

 

 

 

 

 

 

Specification

 

 

ISV

 

 

± 1.5 % Max.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Start Time

 

500 ms Max.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Track to Track

 

3 ms

 

Access Time

 

Time

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Head Settling Time

 

15 ms Max.

 

 

 

 

 

 

 

 

 

Head 0 / Head 1 Offset

 

Head 1 is displaced 8 tracks toward the

 

drive spindle direction.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SEMA ELECTRONICS CO.,LTD

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Contents OEM Manual SFD-321B Floppy Disk Drive SpecificationSafety Standards Packaging Description Disk Used ApplicationLOW High E M Density Standard Option PerformanceFloppy Disk Drive Specification Environmental Conditions SpecificationReliability E M SpecificationPower Supply Physical Specifications Page Page Page SFD-321B*1 Signal InterfacePower Interface Signal Interface Connector and Cable Side Connector Interface ConnectorsSignal Interface Connector Side Power Interface Connector and Cable Side Connector Power Interface ConnectorConnector Recommended Interface Circuit Signal LevelSignal Logic Input Level Output Level *1 Type Contents Input SignalsDensity Select Drive Select 0Motor On Density Mode Transfer Rate TypDirection Select StepWrite Gate Output SignalsSide Select IndexRead Data MFM TrackWrite Protect Disk Change / Ready Timing Diagram Safety Standards Serial Number Label Marking Label DescriptionS1ARB00001 Label DescriptionPage Page Trace Name Description Trace OptionsMode Other Options Buyer SelectionSelection of Bezel Type Color of Bezel, ButtonGeneral Comment