Sharp FDD-412A - Page 7

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FDD412A/B
GENERAL
Overview
The FDD-412A/B floppy disk drive (FDD) is a slim, energy-saving,
lightweight FDD that accommodates 2-sided, double-density floppy disks,
based on the technologies implemented in the widely used FDD-101A/201/
401/102D/402D/403D FDD..
The FDD-412A (Model A) incorporates a VFO, while the FDD-412B (Model B)
has no VFO. The user can select either depending on whether there is a
controller VFO or not.
The standard specifications of the FDD are as follows:
Mae
(1)
(2)
(3)
(4)
(5)
(6)
File protection : Transparent
Top cover color .: . Black
Door lock : Electromagnetic door lock mechanism
Features
Slim lined
The body is only half as wide as conventional types. This makes
it possible to install 2 units in a space for a single conven-
tional type.
Lightweight
The FDD weights 3.5 kg or less.
This weight is about 70% of that of our existing models, making
handling procedures much easier.
Field-proven brushless direct drive system
Our field-proven brushless direct drive system is implemented in
a narrower enclosure.
This system is much more reliable than the belt system or brush-
based direct drive system. Without any parts to be replaced
periodically, the system is of a complete maintenance-free design.
‘There is no need to distinguish 50Hz and 60Hz in frequency.
Convenient VFO connecting interface
Up
to
4
FDDs
can
be
connected
to
the
controller.
If
a
system
con-
figuration
includes
one
model
A
FDD,
all
FDDs
can
be
connected
to
the
VFO interface
regardless
of
the
other
three
being
of
model
A
or
B.
This
promises
configurations
of
high
cost-performance.
2-DC power supply
A 2-DC power supply system has replaced the 3-DC power supply
system. This has reduced the average power consumption to about
57% of that of our existing models.
LSI-based circuitry
Dedicated LSIs constitute the greater part of circuitry. Without
any parts to be replaced periodically, higher reliability and much
better maintenability can be realized. .