D K 3 2 6 C - 6 HITACHI
NO MORE PRODUCED Native| Translation
------+-----+-----+-----
Form 3.5"/SLIMLINE Cylinders 3202| | |
Capacity form/unform 601/ MB Heads 4| | |
Seek time / track 9.8/ 2.0 ms Sector/track | | |
Controller SCSI2 SI/FAST Precompensation
Cache/Buffer 448 KB LOOK-AHEAD Landing Zone
Data transfer rate 6.000 MB/S int Bytes/Sector 512
10.000 MB/S ext SYNC
Recording method RLL 1/7 operating | non-operating
-------------+--------------
Supply voltage 5/12 V Temperature *C 10 50 | -20 60
Power: sleep W Humidity % 8 80 | 8 90
standby W Altitude km 3.000| 12.000
idle W Shock g 5 | 40
seek W Rotation RPM 6300
read/write W Acoustic dBA 45
spin-up W ECC Bit 96
MTBF h 400000
Warranty Month
Lift/Lock/Park YES Certificates CSA,FCC,IEC950,TUV,UL1950,VDE
**********************************************************************
L A Y O U T
**********************************************************************
HITACHI DK326C (SINGLE-ENDED) PRODUCT SPECIFICATION K6600650 12/1993
Single Ended Type
+---------------------------------------------------------+
|+-------+ 8-7 +-+--+
|| | JP3 | | +-+ |
|| | 2-1 | | |
|| | | | |
|| | | | |
|| | 15-16 | | |
|+-------+ | | | | |
++ | | JP2 | | |
++ | | | | |
| 2+-+1 | | |
|+--+ | | |
|| | | | |
|| |J3 | | |
|| | | | |
||x | +-+ |
|+--+ +-+--+
+---------------------------------------------------------+
Other Side
+-----------------------------------------------+--J6-----+
| | +-----1 +---+J2
| | 8-----+ | |Power
| +---------+---+
| |1
| |
| |I
| |N
| |T
| |E J1
| |R
| |F
| |A
| |C
| J7 |E
| +-----1 |
| 8-----+ |
+-------------------------------------------------------------+
**********************************************************************
J U M P E R S
**********************************************************************
HITACHI DK326C (SINGLE-ENDED) PRODUCT SPECIFICATION K6600650 12/93
Jumper Setting
==============
NOTE
JP2 1-2, 3-4, 5-6, 9-10, 11-12, 13-14, 15-16 and
JP3 1-2, 5-6, 7-8 and
J6 1-2, 3-4, 5-6 are installed at the shipment.
User changeable jumpers are green!
Jumper Plug Installation
------------------------
The following jumpers are accessible to the user
Jumper Pin.-No.
SCSI ID setting jumper J6 1 6
SCSI BUS PARITY CHECK setting jumper JP2 7 8
Terminator power source selecting jumper JP3 1 4
Terminator Enable/Disable setting jumper JP3 5 6
MOTOR START/STOP setting jumper JP2 5 6
Synchronized Spindle jumper JP2 1 4
Synchronized Spindle Terminator jumper JP3 7 8
NOTE1
The DK326C jumpers other than listed above are installed by the manu-
facturer and must NOT be removed or replaced by the user.
Never remove any of the "BLACK" factory set jumpers.
These jumpers are unique to each drive.
All jumpers should be set with power off.
Jumper socket part numbers (GREEN):
Microbit header, Elco International K.K. P/N 20-8387-002-005
NOTE2
By using an extension cable from J6 connector, SCSI ID Setting and
LED are externally available.
J6 J6
7 pin o--------------+<--------------o 8 pin
Connector part numbers on the cable side
+-------------+------------------+-------------------+
|Name |Manufacturer |Part No. |
+----+--------+------------------+-------------------+
|J6 |Housing |Elco International|62-8387-008-100-001|
| | |K.K. | |
| +--------+ +-------------------+
| |Contact | |72-8387-999-100-800|
| |Socket | | |
+----+--------+------------------+-------------------+
J6 1 6 SCSI ID setting jumper
-------------------------------
7--+--+--+--1
| | | | | SCSI ID 0 REMOVE all jumper plugs
8--+--+--+--2
7--+--+--+--1
| | | |XX| SCSI ID 1 install the jumper plug for J6 1,2
8--+--+--+--2
7--+--+--+--1
| | |XX| | SCSI ID 2 install the jumper plug for J6 3,4
8--+--+--+--2
7--+--+--+--1
| | |XX|XX| SCSI ID 3 install the jumper plugs for J6 1 4
8--+--+--+--2
7--+--+--+--1
| |XX| | | SCSI ID 4 install the jumper plug for J6 5,6
8--+--+--+--2
7--+--+--+--1
| |XX| |XX| SCSI ID 5 install the jumper plugs for J6 1,2,5,6
8--+--+--+--2
7--+--+--+--1
| |XX|XX| | SCSI ID 6 install the jumper plugs for J6 3 6
8--+--+--+--2
7--+--+--+--1
| |XX|XX|XX| SCSI ID 7 install the jumper plugs for J6 1 6
8--+--+--+--2 (DEFAULT)
JP2 7,8 SCSI BUS PARITY CHECK setting jumper
---------------------------------------------
15+-+-+-+-+-+-+-+-1
| | | | | | | | | Enable SCSI BUS PARITY CHECK
16+-+-+-+-+-+-+-+-2 Remove the jumper plugs for JP2-7,8 (DEFAULT)
15+-+-+-+-+-+-+-+-1
| | | | |X| | | | Disable SCSI BUS PARITY CHECK
16+-+-+-+-+-+-+-+-2 Install the jumper plugs for JP2-7,8
JP3 1 4 Terminator power source selecting jumper
-------------------------------------------------
+----+
8| |7 +5V source for terminator is supplied only from the SCSI
+----+ bus (HOST)
6| |5
+----+ Install the jumper plug for JP3 3,4
4|XXXX|3
+----+
2| |1
+----+
+----+
8| |7 +5V source for terminator is supplied only from the drive
+----+ controller (DEFAULT)
6| |5
+----+ Install the jumper plug for JP3 1,2
4| |3
+----+
2|XXXX|1
+----+
JP3 5,6 Terminator Enable/Disable setting jumper
-------------------------------------------------
+----+
8| |7 Disable the terminator
+----+
6| |5 Remove the jumper plugs for JP3 5,6
+----+
4| |3
+----+
2| |1
+----+
+----+
8| |7 Enable the terminator (terminate the SCSI bus)
+----+
6|XXXX|5 Install the jumper plug for JP3 5,6
+----+
4| |3
+----+
2| |1
+----+
NOTE
Terminator on DK326C has the semiconductor switch internally, and
installing and removing of terminator is performed by this switch
and jumper setting instead of physical installing and removing of
terminator. So some power source is always required to operate
semiconductor switch in any terminators of the drives on SCSI Bus
cable. Otherwise the impedance of this Bus network will be pulled
down and correct termination will not be kept.
+--------------+-----+---------------------+-----------------------+
| | |Last drive to be |Non-last drive on a BUS|
| | JP3 |terminated on a daisy|CABLE or any drives in |
| | Pin#|chain BUS CABLE |ease of external |
| | +-------+-------------+termination |
| | |Set A |Set B | |
+--------------+-----+-------+-------------+-----------------------+
|terminator | 1-2 |install|remove |remove |
|power source +-----+-------+-------------+-----------------------+
| | 3-4 |remove |install |install |
+--------------+-----+-------+-------------+-----------------------+
|terminator | 5-6 |install|install |remove |
|enable/disable| | | | |
+--------------+-----+-------+-------------+-----------------------+
JP2 5,6 Motor Start/Stop setting jumper
----------------------------------------
-+7+-+-+-1 Spindle motor start up at the power on (DEFAULT)
| |X| | |
-+8+-+-+-2 Install the jumper plug for JP2 5,6
-+7+-+-+-1 Spindle motor start up units the SCSI "start/stop unit
| | | | | Command"
-+8+-+-+-2 Remove the jumper plug for JP2 5,6
JP1 1-4 Synchronized spindle jumper
------------------------------------
The Synchronized spindle option can be supported by the combination
of these jumpers. At the shipment, these jumpers are set to "Off Line
Mode", which means non-supported. The mode to be supported will be
decided when power is turned on.
The mode can be confirmed by MODE SENSE command and changed by MODE
SELECT command.
-+3+-1 -+3+-1 -+3+-1 -+3+-1
|X|X| |X| | | |X| | | |
-+4+-2 -+4+-2 -+4+-2 -+4+-2
off Line Slave Master Not Specified
at the
shipment
JP3 7-8 Synchronized Spindle Terminator jumper
-----------------------------------------------
+----+
8| |7 MASTER CLOCK line is not terminated
+----+
6| |5 Remove the jumper plugs for JP3 7,8
+----+
4| |3 This jumper will be removed at drives other than the end
+----+ of the signal line.
2| |1
+----+
+----+
8|XXXX|7 MASTER CLOCK line is terminated (factory setting)
+----+
6|XXXX|5 Install the jumper plug for JP3 7,8
+----+
4| |3
+----+
2| |1
+----+
**********************************************************************
I N S T A L L
**********************************************************************
HITACHI DK326C SPECIFICATION K6600650 12/93
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!
Mounting
--------
Mount the drive four screws by properly inserting them trhough 4
holes in the drive. (Screw's torque: 6 8KG-cm (2.36 3.15Kg-inch).
Clearance not less than 3mm around HDA is required to accommodate any
possible vibration of HDA itself.
Cooling
-------
The cooler the opearating temperature within the specification, the
higher the reliability of the drive. When you install the drive in a
cabinet or box, ventilate it using a fan. It is desirable that the
temperature around the drive be kept at almost the same as room
temperature.
Connecting Methods
------------------
Interface Cable (Daisy Chain)
+-----------+
| +-Terminator
| SCSI BUS | +-------++-SCSI--++-------++--------+
| +-+ || Cable || || |
| | || || || |
| | || || || |
| | || || || ++Terminator
| | +---++-+ +---++-+ +---++-+ +---+-++
| | |DK326C| |DK326C| |DK326C| |DK326C|
| | +--++--+ +--++--+ +--++--+ +--++--+
| | || || || ||
+-----------+ || || || ||
| +-Power--+| || || ||
| +---------+-------+| || ||
| DC POWER +---------+--------+-------+| ||
| +---------+--------+--------+-------+|
+-----------+ | | | |
| GND +---------+--GND---+--------+--------+
+-----------+
NOTE1
The SCSI bus can accommodate a maximum of eight (Single-Ended) units
including the host processor, DK326C units, and other SCSI devices.
NOTE2
Every DK326C unit is furnished with a terminator module. The
terminator module of the drives other than the last drive (end of
SCSI cable) must be removed.
Single configuration
+-------+ +-------+
| HOST +----SCSI-Bus--------+DK326C |
| XXX +--------------------+ XXX |
+-------+ +-------+
Mult-controller configuration
+-------+ +-------+
| HOST +----SCSI-Bus--------+ DK326C|
| XXX +------+ +----------+ #0|
+-------+ | | +-------+
| | +-------+
| +----------+ DK326C|
+-------------+XXX #1|
+-------+
Multi-host configuration
+-------+ +-------+
| HOST +----SCSI-Bus--------+ DK326C|
| +----+ +----+ #0 |
+-------+ | | +-------+
+-------+ | | +-------+
| HOST | | | | DK326C|
| XXX+----+ +----+XXX #1 |
+-------+ +-------+
XXX = Terminator installed
The system can consist of a maximum of eight units (Single-Ended)
including the host adapter in multi-controller and/or multi-host
configuration.
Terminator must be provided only at BOTH ENDS of SCSI Bus.
+---------+ pin 1 +12 VDC
| O O O O | pin 2 +12 Volts Return (GND)
| 4 3 2 1 | Power pin 3 + 5 Volts Return (GND)
+---------+ pin 4 + 5 VDC
Connector Specifications for Cables
-----------------------------------
The following connector part numbers indicate the connectors on
cable side.
+----------------+-------------------------------------------------+
| |Name Part Number Type |
+----------------+-------------+----------------+------------------+
|Cable B for |Connector P1 |3M-3425-6500S & |Single |
|SCSI interface | |3448-3050J or |Ended |
| | |3M-3425-6550EC |Type |
| | |(with strain | |
| | |relief) or | |
| | |FCN-607B050-G/0 | |
| | +----------------+------------------+
| | |AMP 786090-7 |Wide Differential |
| | |Fujitsu FCN |Type |
| | |237M068-G/0 | |
+----------------+-------------+----------------+------------------+
|Cable A for DC |Connector P3 | | |
|power supply | Pin |AMP 61314-4 | |
| | +----------------+------------------+
| | Housing|AMP 1-480424-0 | |
+----------------+-------------+----------------+------------------+
|LED Connector |Connector P6 | | |
| | Housing|FCN-723J012/2M | |
| | +----------------+------------------+
| | Contact|FCN-723J-AU | |
| | Socket | | |
+----------------+-------------+----------------+------------------+
Cable Specification
-------------------
+------------+----------------------------+------------------------+
| |Cable Type |Recommended max. Cable |
| | |length |
+------------+----------------------------+------------------------+
|Cable B for |FLAT RIBBON or TWISTED PAIR | 6m (Single Ended Type) |
|SCSI inter- | |25m (Wide Differentail) |
|face | | |
+------------+----------------------------+------------------------+
|Cable A for |AWG #20 | |
|DC power |Sectional area core: 0.5mm |3m |
|supply |Max. external diameter: 2.54| |
+------------+----------------------------+------------------------+
When multiple drives are connected to each other in a "daisy-chain"
connection, total length of cable B should not exceed the recommended
maximum cable length.
To improve the interface noise elimination, especially if the cables
run close to noise generating devices or come out of the frame,
shield the cables as necessary.
Crimping Tools (Single-Ended Type)
----------------------------------
Cable B for control signal Manual type: 3M-3640 or 3M-3335
Cable A for DC power supply Manual type: AMP 90123-2
**********************************************************************
F E A T U R E S
**********************************************************************
HITACHI DK326C SPECIFICATION K6600650 12/93
Product Specifications
----------------------
The DK326C disk storage is a high-speed, large-capacity enhancement
of the existing DK325 disk storage. The DK326C has high-performance
sputtered disks and thin film heads sealed in a dust-proof enclosure.
It adopts a voice coil motor for driving the magnetic heads. It
features large capacity, high-speed positioning, and high reliability
for its compact size. The interface that the DK326C uses is a SCSI-2
interface, supporting ANSI SCSI and the CCS.
FIFO Buffer
-----------
DK326C SCSI controller has 448K (64Kx7) bytes of FIFO buffer. This
data buffering feature prevents the delay from being brought about
during reconnect processing and reduces the latency time that is
otherwise generated by the difference in the data rate between the
two devices.
Automatic error correction
--------------------------
The controller uses 12 bytes of ECC to automatically correct read
errors.
Automatic error retry
---------------------
The controller automatically retries whenever disk accesses occur.
Self-diagnosis
--------------
After power up drive performs self-diagnosis automatically. In order
to achieve higher reliability controller performs self-diagnostic
operation in about every five seconds.
Seek error retry
----------------
The controller makes a maximum of 4 retries when a seek fault or ID
mismatch error (the head is positioned on an invalid track) occurs.
A seek error retry is executed with a rezero operation.
(The controller makes a retry oneself before the host makes a retry.)
Retry execution time is not more than 110 msec times the number of
retries.