R O 2 5 2 RODIME NO MORE PRODUCED Native| Translation ------+-----+-----+----- Form 5.25"/HH Cylinders 306| | | Capacity form/unform 10/ MB Heads 4| | | Seek time / track 85.0/18.0 ms Sector/track 32| | | Controller MFM / ST506 Precompensation 128 Cache/Buffer KB Landing Zone 305 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 10 50 | Power: sleep W Humidity % 10 85 | standby W Altitude km | idle W Shock g 3 | 30 seek W Rotation RPM 3600 read/write W Acoustic dBA spin-up W ECC Bit MTBF h 12000 Warranty Month Lift/Lock/Park NO Certificates ********************************************************************** L A Y O U T ********************************************************************** RODIME RO 350 SERIES USER MANUAL P/N USM0040 XXXXXXX P3 Power +---------------------------------------------------------+ | |XX | |XX | |XX P2 | |XX Data | |XX | |XX | | | Drive +-+P4 |XX P1 | Select | | |XX | 1-+ ++ |XX C | Terminator || |XX O | Resistor || |XX N | Pack || |XX T | || |XX R | ++ |XX O | |X1 L +---------------------------------------------------------+ ********************************************************************** J U M P E R S ********************************************************************** RODIME RO 350 SERIES USER MANUAL P/N USM0040 Jumper Setting ============== Drive Select ------------ Up to four drives may be connected to one host in a "daisy-chain" fashion. Drive numbering is effected by pins P4 which are shorted together by means of the jumper provided. To identify a drive as number 1, short the pins furthest from the DC connector. Similarly for drives 2, 3 and 4. All "daisy-chained" drives should have the line terminator pack removed except for the last drive in the chain. All drives are supplied for single usage, that is, pole 1 is closed and the terminator pack is present. +------+------+------+------+------+ |Drive |Pole |Pole |Pole |Pole | |Select| 1 | 2 | 3 | 4 | +------+------+------+------+------+ | 1 |CLOSED|OPEN |OPEN |OPEN | +------+------+------+------+------+ | 2 |OPEN |CLOSED|OPEN |OPEN | +------+------+------+------+------+ | 3 |OPEN |OPEN |CLOSED|OPEN | +------+------+------+------+------+ | 4 |OPEN |OPEN |OPEM |CLOSED| +------+------+------+------+------+ P3 DC Power and pin connector assignments ------------------------------------------- +------------+ pin 1 +12 VDC | 4 3 2 1 | pin 2 +12 Volts Return +------------+ pin 3 + 5 Volts Return pin 4 + 5 VDC ********************************************************************** I N S T A L L ********************************************************************** RODIME RO 350 SERIES USER MANUAL P/N USM0040 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 Side brackets with tapped holes (6/32" UNC) are provided with each drive and permits base or side mounting. These brackets are fixed to the drive frame via shock-absorbing mounts. The drive MAY BE ORIENTED IN ANY AXIS. When installing into an enclosure, at least 0.1 inch clearance must be maintained around the entire drive to allow vibration isolation and to prevent obstruction of the breather filter and the creation of ground loops. The RO250 consits of a RO350 module and sub-frame which is attached to additional side brackets. The complete assembly meets the form factor requirements of a "half-height" 5.25 inch Winchester with the same tapped mounting holes. Up to four drives may be connected to one host in a "daisy-chain" fashion. Note that, in the multiple drive configuration all data interface lines are radially connected to the host. Connectors ---------- The RO 350 drive interfaces to host systems via a variant the ST506 interface which has become an accepted standard for 5 inch Winchester disc drives. There are separate connectors for data (MFM code), for control lines and for DC power. A chassis ground tab is also provided. The convention for control is that a TTL logical zero is false and a TTL logical one is false. Up to four drives may be connected to a host system and each drive is provided with a four- pole switch for selection. The control lines may be daisy-chained but the data lines MUST be radially (individually) connected to the host. Control signals for the drive are provided via the 34 pin edge connector (P1/J1). The pins are numbered 1 through 34 with the even pins located on the solder side of the board. Pin 2 is located on the end of the board connector closest to the DC power connector and is labelled. A key slot is provided between pins 4 and 6. The recommended mating connector is AMP ribbon connector A/N 88373-3. Radial connection of read/write data signals is provided via a 20 pin edge connector (P2/J2). The pins are numbered 1 through 20 with the even pins located on the solder side of the board. The recommended mating connector is AMP ribbon connector A/N 88373-6. DC power is provided via a 4 pin AMP Mate-N-Lok connector (P7/J7) P/N 350211-1, or equivalent, mounted via the solder side of the board. The recommended mating connector is AMP P/N 1-480424-0 utilising AMP pins P/N 350078-4. System with four drives ----------------------- HOST +-----------+ +-----------------+ | +---o---Control------------------+J1 Drive 1 | | | | +-------Data------------+J2 | | | | | +-Power---+J3 | | | | | | +-----------------+ | | | | | +-----------------+ |Controller | o----+-------------+---------+J1 Drive 2 | | | | | +-----------+---------+J2 | | | | | | o---------+J3 | | | | | | | +-----------------+ | | | | | | +-----------------+ +-----------+ o----+-+-----------+---------+J1 Drive 3 | | | | | | +---------+---------+J2 | | +---+----+ | | o---------+J3 | | +---+------+ | | +-----------------+ |Data +---+--------+ | +-----------------+ |Separator | +------------------+---------+J1 Drive 4 | | +----------------------+---------+J2 | | | o---------+J3 | +-----------+ | +-----------------+ DC voltages----+ Note that, in the multiple drive configuration all data interface lines are radially connected to the host. Controllers ----------- The following 5-1/4 inch Winchester Disk Controllers are known to operate with the RO350 series disk drive. In general, any controller which will operate with the RO100 and RO200 series disk drive will also operate with the RO350 series disk drive. However, the controller must be able to address up to 306 cylinders and set the STEP interval in the range 5 s to 15ms. ********************************************************************** F E A T U R E S ********************************************************************** RODIME RO 350 SERIES USER MANUAL P/N USM0040 Introduction ------------ The Rodime RO 350 series of 3.5 inch (96 mm) Winchster disk drives provides fast access data storage for use with small business computers, terminal and microprocessor based systems. There are two models in the series, RO 351 and RO352. This manual also covers the RO 251 and RO252 which consist of the RO350 with additional mounting brackets and separate facia which simulates a half high 5.25 inch form factor. Seek Time --------- +----------------------------------+--------+ |Track-to-Track msec. typ. | 18 | +----------------------------------+--------+ |Average msec. typ. | 85 | | msec. max. | 180 | +----------------------------------+--------+ |Latency msec. avg. | 8.3 | +----------------------------------+--------+ Indicator and Fault Codes ------------------------- Two red LED's fixed to the master electronics board are visible through the facia when they are illuminated. The "Power-On" LED is on when the drive is READY with no error condition present. It is also used to indicate fault conditions to the driev. The "Select" LED is on when the drice is selected by the host provided the "Power-On" LED is on. The "Power-On" LED is positioned closest to the centre of the facia. It is used to flash error messages should certain fault conditions arise on the drive. A four bit binary code is used (long flash = logical 1, short flash = logical 0) with the most significant bit occurring first: e.g. Short, short, long, short = 2 (0010) +------------+--------------------------------------------------+ | Fault Code | Description | +------------+--------------------------------------------------+ | 01 (0001) | No index track data burst | +------------+--------------------------------------------------+ | 02 (0010) | No Flag zero | +------------+--------------------------------------------------+ | 03 (0011) | Motor speed outside +/- 1% tolerance at end of | | | power-up sequence | +------------+--------------------------------------------------+ | 04 (0100) | Motor speed outside +10%, tolerance in normal | | | operation | +------------+--------------------------------------------------+ | 05 (0101) | Flag zero stays TRUE | +------------+--------------------------------------------------+ | 06 (0110) | STEP received while WRITE GATE is TRUE | +------------+--------------------------------------------------+ | 07 (0111) | WRITE FAULT | +------------+--------------------------------------------------+ | 08 (1000) | Microprocessor self-test fail (RAM) | +------------+--------------------------------------------------+ | 09 (1001) | Microprocessor self-test fail (ROM) | +------------+--------------------------------------------------+ | 10 (1010) | No INDEX | +------------+--------------------------------------------------+ | 11 (1011) | Motor not up to speed | +------------+--------------------------------------------------+ Fault codes 1, 2, 3, 5, 8, 9, 10 and 11 are monitored during the initial power-up sequence of the drive. The remaining codes, namely 4, 6 and 7 are constantly monitored during normal operation. All fault codes are latched by the processor and the drive must be restarted to clear. Illegal Address Map ------------------- Each drive is accompanied by a map indicating the addresses of sectors which should not be used by the host. This map (label) is fixed to the base casting wall. These illegal sectors have been identified during unit test in the factory and contain a repeatable disk defect, greater than one bit in length. No such illegal address will exist in cylinders 0, 1 and 2. An illegal address is specified by cylinder, head and sector. It should be noted that the format used for this purpose is 33 sectors of 256 bytes each. The maximum number of illegal addresses is: Model Number 351 352 Max. number of illegal addresses 4 8