H D 6 6 2 / 1 2 OLIVETTI NO MORE PRODUCED Native| Translation ------+-----+-----+----- Form 5.25"/HH Cylinders 612| | | Capacity form/unform 20/ 25 MB Heads 4| | | Seek time / track 85.0/18.0 ms Sector/track 32| | | Controller MFM / ST506 Precompensation Cache/Buffer KB Landing Zone Data transfer rate 0.625 MB/S int Bytes/Sector 256 0.625 MB/S ext Recording method MFM operating | non-operating -------------+-------------- Supply voltage 5/12 V Temperature *C 5 50 | -10 60 Power: sleep W Humidity % 10 80 | 10 95 standby W Altitude km | idle W Shock g | seek W Rotation RPM 3573 read/write W Acoustic dBA spin-up W ECC Bit MTBF h 12000 Warranty Month Lift/Lock/Park YES Certificates ********************************************************************** J U M P E R S ********************************************************************** OLIVETTI HD662 PRELIMINARY DRIVE SPECIFICATIONS 11/84 Jumper Setting ============== Drive Selection --------------- When the drive select line is activated, drive selection will take place. Only the drive with line active will respond to input lines or gate output lines. +---------+ | x . . . | ON | . x x x | OFF DS-1-2-3-4-+ +-+-+-+ | +-------- Drive Select (set only one bit to ON) Physical Interface ------------------ The electrical interface between the drive and the host system is comprised of four connectors: 01J - provides control signals for the device (34 pins) 02J - provides the radial connection for read/write data signals (20 pins) 03J - provides the dc power (4 pins) Interface Lines and pin assignment ---------------------------------- Pin 1 +12V DC Pin 2 +12V Return Pin 3 +5V Return Pin 4 +5 V DC 01J Connector Pin Assignment ---------------------------- +------------+------------+---------------------------------+ |GND RTN PIN | Signal Pin | Signal Name | +------------+------------+---------------------------------+ | 1 | 2 | RESERVED | +------------+------------+---------------------------------+ | 3 | 4 | RESERVED | +------------+------------+---------------------------------+ | 5 | 6 | WRAGA - WRITE GATE | +------------+------------+---------------------------------+ | 7 | 8 | OCCUO - SEEK COMPLETE | +------------+------------+---------------------------------+ | 9 | 10 | POZEN - TRACK 000 | +------------+------------+---------------------------------+ | 11 | 12 | WRIFN - WRITE FAULT | +------------+------------+---------------------------------+ | 13 | 14 | HEAD1 - HEAD SELECT 2* | +------------+------------+---------------------------------+ | 15 | 16 | MACAN - RESERVED (TO 02J PIN 7) | +------------+------------+---------------------------------+ | 17 | 18 | HEAD2 - HEAD SELECT 2(1) | +------------+------------+---------------------------------+ | 19 | 20 | GIRON - INDEX | +------------+------------+---------------------------------+ | 21 | 22 | MADIN - READY | +------------+------------+---------------------------------+ | 23 | 24 | STEPN - STEP | +------------+------------+---------------------------------+ | 25 | 26 | SEL 1 - DRIVE SELECT 1 | +------------+------------+---------------------------------+ | 27 | 28 | SEL 2 - DRIVE SELECT 2 | +------------+------------+---------------------------------+ | 29 | 30 | SEL 3 - DRIVE SELECT 3 | +------------+------------+---------------------------------+ | 31 | 32 | SEL 4 - DRIVE SELECT 5 | +------------+------------+---------------------------------+ | 33 | 34 | AVANN - DIRECTION INN | +------------+------------+---------------------------------+ 02J Connector Pin Assignment ---------------------------- +------------+----------+-----------------------------------+ |GND RTN PIN |SIGNAL PIN| SIGNAL NAME | +------------+----------+-----------------------------------+ | 2 | 1 | UNSEA - DRIVE SELECTED | +------------+----------+-----------------------------------+ | 4 | 3 | RISE1 - RESERVED | +------------+----------+-----------------------------------+ | 6 | 5 | RISE2 - RESERVED | +------------+----------+-----------------------------------+ | 8 | 7 | MACAN - RESERVED (TO 01J PIN 16) | +------------+----------+-----------------------------------+ | 10 | 9 | RISE3 - RESERVED | +------------+----------+-----------------------------------+ | 12 | 11 | GROUND - GND | +------------+----------+-----------------------------------+ | | 13 | WRIDO - +MFM WRITE DATA | +------------+----------+-----------------------------------+ | | 14 | WRIDN - -MFM WRITE DATA | +------------+----------+-----------------------------------+ | 16 | 15 | GROUND - GND | +------------+----------+-----------------------------------+ | | 17 | READO - +MFM READ DATA | +------------+----------+-----------------------------------+ | | 18 | READN - -MFM READ DATA | +------------+----------+-----------------------------------+ | 20 | 19 | GROUND - GND | +------------+----------+-----------------------------------+ ********************************************************************** I N S T A L L ********************************************************************** OLIVETTI HD662 PRELIMINARY SPECIFICATIONS 11/1984 Notes on installation ===================== Drive mounting -------------- horizontally vertically +-----------------+ +--+ +--+ +------------------+ | | | +-----+ +-----+ | | | x | | | | | | | | x+----------------+x +-+-----------------+-+ | | | | | | ||x x|| +---------------------+ | | | | | | || x x || | | | | | | || x x || x x | | | | | | || x x || +------x------x-------+ | +-----+ +-----+ | || xx || +-+------x--x-------+-+ +--+ +--+ || x x || | xx | || x x || | x x | || x x || +---x--------x----+ |x x| x x x++----------------++x UNACCEPTABLE! UNACCEPTABLE! Never install PC board on the Top! Positioning Mechanism --------------------- The stepper motor positions the read/write heads. The heads are mounted on a carriage driven by a stepper motor and a capstan wound by a metal band. The winding and unwinding of the metal band determine the positioning. Drive Mechanism --------------- A brushless DC spindle motor speeds up the disk until they reach 3573 revolutions per minute. Such speed is controlled by a locked-loop circuit that has as reference a quartz frequency. Heads and Disks --------------- The read/write heads are of the Winchester type and fly at a height of 0.4 m from the disk surface. The disks are made of aluminium and the surface is coated with a sheet of ferrous oxide specially lubricated to permit contact of the head with the surface during start and stop phases. Filters ------- The drive has two filters: An absolute filter mounted inside the cover to filter the air flow generated by the disks rotation speed. A compensation filter mounted on the cover to equalize pressure with ambient air. Connection Mode --------------- The drives are connected in daisy chain on control signals and radially on read/write signals. The maximum number of connected drives is 4. The maximum lergth of the daisy connection cable is 6 meters (18 feet). Radial configuration cables must be the same length as in daisy chain. In either case, the maximum length should be no more than 6 meters. There is also the possibility of a radial connection on the command channel. When the jumper is set, all signal outputs are activated, even when the unit is not selected. XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XXXXController/Data SeparatorXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX X X X X X | | | | | | | | | | +---------+ | | | | +--X 02J | | | | | | 03JX-----Power Supply Unit +--+--+--+-----X | +--+--+--+-----X 01J |Drive 1 | | | | +---------+ | | | | | | | | +---------+ | | | +-----X 02J | | | | | 03JX-----Power Supply Unit +--+--+--------X | +--+--+--------X 01J |Drive 2 | | | +---------+ | | | | | | +---------+ | | +--------X 02J | | | | 03JX-----Power Supply Unit +--+-----------X | +--+-----------X 01J |Drive 3 | | +---------+ | | | | +---------+ | +-----------X 02J | | | 03JX-----Power Supply Unit +--------------X | X 01J |Drive 4 +---------+ Control Lines ------------- All the following lines are present in the 01J connector. The electrical specifications for these lines are as follows: Low Level = 0.0 VDC to +0.4 VDC -48mA High Level = +2.5 VDC to +5.25VDC +250 A Drive Select Lines ------------------ These lines when at a low level, permit the selection of the drives. When selected, only one of these lines will be at a low level. The peripheral remains selected when this line is kept at a low level. No more than one line must be at low level. The selection of the drive is made via dip switches mounted on the PCB. On a daisy chain configuration the resistors must be mounted only on the last drive. Cables ------ Connection with the 01J and 02J has to be made with a Flat Ribbon cable or a Twisted Pair cable with a 105 ohm impedance. Connection with the 03J has to be made with a Twisted Pair cable. ********************************************************************** F E A T U R E S ********************************************************************** OLIVETTI HD662 PRELIMINARY SPECIFICATIONS 11/1984 General Description ------------------- The HD 662 is a random access magnetic storage unit with 2, 5.25 inch diameter, non-removable disks. The 4- head unit, mounted on a carriage driven by a stepper motor with a band actuator, moves on disk surfaces and stops in any of the 612 cylinders. An appropriate area is used for the shipping zone. The disks are mounted on a spindle fitted directly on the DC brushless motor shaft. The disks, heads and carriage are contained in a sealed chamber. This chamber is made of a die-cast aluminium cup-shaped baseplate, specially treated to prevent contamination, and its cover. Within this chamber, the air blow through a class 100 absolute filter recirculates in a contaminate-free environment. On the outer side of the baseplate are mounted: - the stepper motor - the spindle motor - the electronics is composed of: stepper motor drive circuits, actuation, data channel, spindle motor speed control, and a microprocessor to control the main functions. The logical interface is industry standard and is composed of two connectors. A standard connector is also used for DC voltage requirements. The physical interface is compatible with all 5.25 inch Winchester drives with stepper motor actuator that use industry standard inter- face. Control lines from drive to controller -------------------------------------- These lines are transmitted by a line driver with an open collector. On the controller they have to be received by a Schmitt trigger (74LS14 or equivalent). Line impedance is terminated with a 220-330 ohm resistor pack. Control lines from controller to drive -------------------------------------- The lines are received by the drive with a 74LS14 Schmitt trigger and the lines are terminated with a 220-330 ohm resistor pack. On the controller they have to be transmitted by an open collector 75452-7438 or equivalent device.