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Floppy Disk Drive¶

ND 103161 5 1/4" Floppy Disk Drive, 1.2 Mbyte Dual speed

[Photo: Floppy Disk Drive]

  ND
Norsk Data

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FLOPPY DISK DRIVE¶

INTRODUCTION¶

ND 103161 Floppy Disk Drive reads and writes in single or double density, and on one or both sides of 5 1/4" diskettes.

It is provided with:

Two ceramic read/write heads providing media life of over 3 million passes/tracks, and head life of over 15,000 hours.

A Head Positioning Actuator which positions the read/write heads to the desired track on the diskette. The Head Load Solenoid loads the read/write heads against the diskette, allowing data to be recorded on or read from the diskette.

FEATURES¶

Through formatting, the diskettes can be made single sided/single density or double sided/double density.
Easy maintenance and service.
Fast 3ms track-to-track access time.
Write protect for improved data security.
Software compatible with 8-inch double-sided/double-density floppy disk drives (1.6MB).
Dual mode (1.6MB/1MB read write 0.5MB read only).
High speed (360 rpm) or dual speed mode (300/360 rpm) selectable.

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FLOPPY DISK DRIVE¶

PRODUCT DESCRIPTION¶

The ND 103161 Floppy Disk Drive consists of:

Read/Write and Control Electronics
Drive Mechanism
Head Positioning Mechanism
Two Read/Write Heads

These components perform the following functions:

Interpret and generate control signals
Move read/write heads to the selected track
Read and write data

Performance Specifications¶

	Low speed	High speed
	300rpm	360rpm
Unformatted Capacity:
Per Disk	1.0 KBytes	1.6 MBytes
Formatted Capacity:
Per Disk	0.8 MBytes	1.2 MBytes
Transfer Rate	max. 250 Kbits/sec.	max. 500 Kbits/sec.
Latency	100 msec.	83 msec.
Access Time:
Track-to-Track	3 msec.	3 msec.
Average (including settling)	94 msec.	91 msec.
Settling Time	15 msec.	15 msec.
Head Load Time	35 msec.	35 msec.
Motor start-up time	500 msec.	600 msec.

Functional Specifications¶


Innermost track bit density	5922 bpi
Track Density	96 tpi
	48 tpi read
Cylinders	80
Tracks	160
Heads	2

ENVIRONMENTAL REQUIREMENTS¶

Operating temperature: +10°C to +30°C

Power Requirements¶

+2 VDC +/- 5% 0.4A typ., 1.0A max
+5 VDC +/- 5% 0.5A typ., 0.6A max

Physical Requirements¶

Height: 42.8 mm
Width: 149 mm
Depth: 210 mm
Weight: 1.5 kg

RELIABILITY SPECIFICATIONS¶

MTBF: 10,000 hours under typical usage
MTTR: 30 minutes
Device Life: 15,000 POH

Error Rates¶

Soft Read Errors: 1 per 10⁹ bits read
Hard Read Errors: 1 per 10¹² bits read
Seek Errors: 1 per 10⁶ seeks

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Norsk Data¶

Corporate Headquarters¶

Olaf Helsets vei 5
P.O. Box 25, Bogerud
0601 Oslo 6
Norway
Tel.: +47-2-626000
Fax: +47-2-725654
Telex: 72876 nd n (A)
Telex: 75232 ndm n (A)
Telenet: 42-2-96976 (A)

Norway¶

Oslo, tel.: +47-2-302000
Bergen, tel.: +47-5-286190
Trondheim, tel.: +47-7-659760
Stavanger, tel.: +47-4-576260
Porsgrunn, tel.: +47-3-911222

Head Office¶

Olaf Helsets vei 5
P.O. Box 25
0621 Oslo 6

Sales Offices¶

Kristiansand, tel.: +47-3-921222
Trondheim, tel.: +47-7-927122
Stavanger, tel.: +47-4-394000
Tromsø, tel.: +47-839638
Porsgrunn, tel.: +47-3-65544

Sweden¶

ND Norsk Data AB
Kanalvägen 3
P.O. Box 121
194 29 Upplands Väsby
Sweden
Tel.: +46-760-92000
Fax: 12550 norgea
Telefax: +46-760-8527 (A)

Gothenburg, tel.: +46-31-456760
Malmö, tel.: +46-40-70510

ND-SILVADATA¶

Sweden
84 Sundsvall
Sundsvall
Tel.: +46-60-151510

Växjö, tel.: +46-470-460220
Stockholm, tel.: +46-760-92000

Denmark¶

Norsk Data A/S
Lautrupbjerg 3-13
2750 Ballerup
P.O. Box 51
2605 Brøndby
Tel.: +45-4286955
Telex: 36592 nd d
Telefax: +45-85664 ndex d

Copenhagen, tel.: +45-26265/681220

Switzerland¶

Norsk Data (Switzerland) S.A.
Ch. du Faubourg de Crêve-Cœur 12
2000 Neuchatel 12
Tel.: +41-38-20122
Telex: 38 100 [illegible] A

Glattburg, tel.: +41-1810033

West Germany¶

Thomasstraße 10-12
638 Bad Homburg v.d.H.
West Germany
Tel.: +49-61727280
Telex: 04-480-73500 nd
Telefax: 85-3772-2959 (A)

Sales Offices¶

West-Berlin, tel.: 49-30-213-936
Hamburg, tel.: 49-40-472020
Hannover, tel.: 49-511-66022
Mülheim, tel.: 49-201-899641
Stuttgart, tel.: 49-711-730031
Munster, tel.: 49-251-289000
Kiel, tel.: 49-431-54359

The Netherlands¶

Norsk Data Nederland B.V.
Borgoänk
P.O. Box 500
5030 NL Nieuwgein
The Netherlands
Tel.: 31-30-24244
Telex: 43070 nd nl

France¶

Norsk Data s.r.l
B.P. 6479
21407 Dijon Cedex
France
Tel.: 3505-42777
Telex: 35-06-48286 (A)

United Kingdom¶

Norsk Data Ltd.
Benham Valence
Newbury
Berks RG16 6UL
United Kingdom
Tel.: 44-635-35644
Telex: 848-34305 A
Telefax: 44-635-34068 (A)

London, tel.: 44-1-588-995
Manchester, tel.: 44-61-941-6787
Edinburgh, tel.: 44-31-558-1681

USA¶

Norsk Data N.A., Inc.
56, William Street
Wellesley
Massachusetts 02181
USA
Tel.: +1-617-235-7916
Telex: 721410 norsk well
Telefax: +1-617-237-7313 A

Los Angeles, tel.: +1-213-752-5081

Hong Kong¶

Norsk Data International
9th Wu Chung Centre
211 Connaught Road
Hong Kong
Tel.: 02-555891
Telex: 68252-651 [illegible]

Represented by Agent in:¶

India: Independent Electronic Ltd., tel.: 91-44-617465/416765, fax: 41-9691 and 41-7161
Indonesia: Norsk Data Int., Ltd., tel.: 62-21-3903588, fax: 62-21 355588
Australia: Norsk Computer Australia, tel.: 61-3-547-4444, fax: 03 563 7300 Finland: Oy Papyrus A.B., tel.: +358-908-2396/52, fax: 191723 paper
France: Anne Ostergren, tel.: +33-69-38266, mail: doean wewandstaf nf
Matra Datasytems: 5a, Paris, tel.: +33-1-815952
Toulouse, tel.: +33-5-34320, fx: 350980