User guide

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 Heath/Zenith Computer Support • Zenith Business Systems
 H-SCOOP Newsletter Henry E. Fale • Computer Consulting
 Computer Control & Interfacing [phone] • Computer Programming
 Word Processing • Sales, Service, Support
QUIKSTOR
15-MEG SUBSYSTEM SPECIFICATIONS
Our 15 megabyte (formatted) hard disk subsystems are adaptable to either the Heath/Zenith
H8 or H89 computer systems via our QUIKSTOR subsystem. This same Winchester unit is also
used for our internal QUIKSTOR system for the Z100 and Z150 series of computers. Please note
that any Winchester hard drive unit is very delicate. The drive technology uses a "flying" head
which never makes contact with the disk surface, but floats slightly above the surface. Never
subject this unit to any type of shock or rough handling. When the unit is in operation, it must
be level and on a hard rigid surface. It must not be subject to any vibrations, i.e. don't knock
the unit while in operation, or you could damage the hard disk surface.
Drive unit comes complete with cabinet, fan, switching power supply, cable, drive controller
and all else needed for host computer interface - software and computer host adapter card
extra.
HARD DRIVE UNIT: Tandon TM503 5 1/4" rigid disk drive or equivalent
ROTATION SPEED: 3600 RPM
HEAD POSITIONING: Split band open loop rotary positioning system
TRACK TO TRACK STEP TIME: 2 milliseconds plus 15 ms head settling time Heads
positioned to track 000 at power up
START/STOP: 15 seconds maximum to reach operating speed from power on
15 seconds for disk to stop rotating after power down
Solenoid operated mechanical brake provided for rapid spindle deceleration and to
preclude possibility of head or disk damage during shipping
CAPACITY: 19.14 MB unformatted (15 MB formatted) per drive, 3.19 MB unformatted per
surface, 10.4 KB per track
PLATTERS: 3
ACTIVE DATA SURFACES: 6
TRACK DENSITY: 345 TPI
CYLINDERS: 306
TRACKS: 1836