FLOPPY DISK DRIVE SPECIFICATION

PAGE

5

 

 

MODEL

SFD-321B

 

 

 

 

LOW

HIGH

 

HIGH

 

 

I T E M

 

DENSITY

DENSITY

 

DENSITY

 

 

 

STANDARD

STANDARD

 

*OPTION*

 

 

 

 

 

 

 

 

 

1MB

2MB

 

1.6MB

 

 

 

 

 

 

 

 

 

Media Operating

Inserting

 

800 gr Max.

 

 

 

 

 

 

 

 

Force

 

Ejecting

 

1300 gr Max.

 

 

 

 

 

 

 

 

 

 

 

 

 

Media Ejecting Distance

 

10 ~ 70 mm

 

 

 

 

 

 

 

 

Acoustic Noise at 50 cm

 

50 dBA Max.

 

 

 

- at 3 ms Step Rate

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Read Bit Shift

1300 ns Max.

650 ns Max.

 

 

1.Measured with Brikon 723B on Track 79 with 0 ns precompensation on both heads.

Asymmetry

600 ns Max.

300 ns Max.

1.Measured with Brikon 723B on Track 00 with 0 ns precompensation on both heads.

 

 

Both R/W heads must be radially aligned to all tracks

 

 

within ±0.0200 mm when accessed from either

 

Radial Alignment

direction.

 

 

 

Measurement is to be made at normal voltage and

 

 

 

 

normal environmental condition

 

 

(23

2

 

and 50

5 % RH)

 

 

±

 

±

 

Azimuth Alignment

±0 °18Max.

 

 

 

 

 

 

 

0 ~ 1300 μs

 

 

Index to Data Burst

Measurement is to

be made from the leading edge of

 

index pulse to the beginning of data burst on

 

 

 

 

Track 40.

 

 

 

 

 

 

Overwrite Modulation

-26 dB or less at Track 00

 

 

 

 

 

 

 

* Read/Write Compensation : 125ns is recommended

SEMA ELECTRONICS CO.,LTD

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Samsung SFD-321B specifications Floppy Disk Drive Specification