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Native| Translation
------+-----+-----+-----
Form 3.5"/HH Cylinders 1748| | |
Capacity form/unform 1050/ 1214 MB Heads 15| | |
Seek time / track 10.0/ 2.0 ms Sector/track | | |
Controller SCSI2 SI/WIDE Precompensation
Cache/Buffer 512 KB READ-AHEAD Landing Zone
Data transfer rate MB/S int Bytes/Sector 512
20.000 MB/S ext SYNC
Recording method RLL operating | non-operating
-------------+--------------
Supply voltage 5/12 V Temperature *C 5 50 | -40 65
Power: sleep W Humidity % 10 90 | 10 95
standby 12.0 W Altitude km -0.061 3.048| -0.305 15.250
idle W Shock g 10 | 60
seek 13.5 W Rotation RPM 5400
read/write W Acoustic dBA 36
spin-up W ECC Bit 64
MTBF h 300000
Warranty Month
Lift/Lock/Park YES Certificates
**********************************************************************
L A Y O U T
**********************************************************************
MICROPL. 2112WS PRODUCT DESCRIPTION 135863 REV. A
+------------------------------------------------------------+
| ID0-+SCSI J9
| +J2 | || ID
| W10-+ RN1+|| ID3-+|
| ++J7 Remote LED Connector +-W11 ||++ +--+
++++++ ||+RN2 |XXXJ1
++++W4 LED Option ID0+-+ ||||+W1|XXX
| ID1| | ++|||W2|XXX
| ID2| | RN3+|||| |XXX
| ID3| | ||+++W13XXX
| COMPONENT SIDE PTY| | || |XXX
| WP | | || |XXX
| SP0| | ++ |XXX
| +-+ID3 SP1+-+ |XXX
| | | SCSI ID |XXX
| +-+ID0 | 1
| +-------+ |XXXJ3
| +++++++++ |XXXPower
+---------------------------------------------------------+ 1
Connector J2 (detail)
---------------------
J2, Right-angle Spindle Sync connector mounted on solder side (far
side).
Pin 1 Slave Sync; 2 Not Connected; 3 Master Sync; 4 Ground;
+-+-+-------------------------
| +-+
|
|
|
| +-1-2-3-4--+
| | ++++++++ J2+----J1----
+-+-++++++++-+-+o o o o o
+--++++++++----+o o o o
| ++++++++J9 +-------
+-ID0------------------
**********************************************************************
J U M P E R S
**********************************************************************
MICROPL. 2112WS PRODUCT DESCRIPTION 135863 REV. A
Jumper Setting
==============
x = Factory default configuration
SCSI ID
-------
NOTE: THERE ARE THREE IDENTICAL GROUPS OF ADDRESS JUMPERS ON THE
DEVICE ELECTRONICS BOARD - ONE GROUP IS NEAR THE LED; THE SECOND
GROUP IS IN LINE WITH SP0, SP1, WP AND PTY; AND THE THIRD GROUP IS
ADJACENT TO CONNECTOR J1. DON NOT USE MORE THAN ONE GROUP AT THE SAME
TIME!
+----------+-------------------------------+
| SCSI ID | Jumpers |
| | ID3 | ID2 | ID1 | ID0 |
+----------+-------+-------+-------+-------+
| 0 | OPEN | OPEN | OPEN | OPEN |
+----------+-------+-------+-------+-------+
| 1 | OPEN | OPEN | OPEN | CLOSED|
+----------+-------+-------+-------+-------+
| 2 | OPEN | OPEN | CLOSED| OPEN |
+----------+-------+-------+-------+-------+
| 3 | OPEN | OPEN | CLOSED| CLOSED|
+----------+-------+-------+-------+-------+
| 4 | OPEN | CLOSED| OPEN | OPEN |
+----------+-------+-------+-------+-------+
| 5 | OPEN | CLOSED| OPEN | CLOSED|
+----------+-------+-------+-------+-------+
| 6 | OPEN | CLOSED| CLOSED| OPEN |
+----------+-------+-------+-------+-------+
| 7 | OPEN | CLOSED| CLOSED| CLOSED|
+----------+-------+-------+-------+-------+
| 8 | CLOSED| OPEN | OPEN | OPEN |
+----------+-------+-------+-------+-------+
| 9 | CLOSED| OPEN | OPEN | CLOSED|
+----------+-------+-------+-------+-------+
| 10 | CLOSED| OPEN | CLOSED| OPEN |
+----------+-------+-------+-------+-------+
| 11 | CLOSED| OPEN | CLOSED| CLOSED|
+----------+-------+-------+-------+-------+
| 12 | CLOSED| CLOSED| OPEN | OPEN |
+----------+-------+-------+-------+-------+
| 13 | CLOSED| CLOSED| OPEN | CLOSED|
+----------+-------+-------+-------+-------+
| 14 | CLOSED| CLOSED| CLOSED| OPEN |
+----------+-------+-------+-------+-------+
| x 15 | CLOSED| CLOSED| CLOSED| CLOSED|
+----------+-------+-------+-------+-------+
Up to sixteen devices (the host and fifteen targets) can be attached
to the SCSI bus. The 2112WS has four ID jumpers. These jumpers are
used to assign one of sixteen SCSI ID bits (0 - 15) to the drive.
In multiple-device systems, each drive must have its own unique ID.
Interface Termination
---------------------
Terminators installed at RN1, RN2, and RN3:
x Drive provides termination for the interface lines.
Terminators ommitted:
Drive does not provide termination for the interface lines.
SP0/SP1 Spindle Control Option
-------------------------------
SP0 CLOSED
SP1 OPEN Spindle motor starts when START UNIT command is
received.
x SP0 OPEN Spindle motor starts at power-on.
SP0/SP1 Spindle Delay Option
-----------------------------
SP1 CLOSED
SP0 OPEN Spindle start-up is delayed based on SCSI ID (12
seconds per ID).
x SP1 OPEN Spindle start-up delay is disabled.
PARITY Bus Parity Check Option
-------------------------------
PTY CLOSED The drive neither generates nor detects parity.
x OPEN The drive generates parity and and has parity
detection enabled.
WP Write Protect Option
------------------------
WP CLOSED The drive is write protected.
x OPEN The drive is not write protected.
W1/W2/W13 Bus Termination Power Option
---------------------------------------
+-----------------------+------------------------------------+
| Jumpers | |
| W1 | W2 | W13 | |
+-------+-------+-------+------------------------------------+
| CLOSED| OPEN | OPEN |The drive provides local terminator |
| | | |power. |
+-------+-------+-------+------------------------------------+
| OPEN | CLOSED| OPEN |Host system provides local |
| | | |termination power. |
+-------+-------+-------+------------------------------------+
x| CLOSED| OPEN | CLOSED|Drive provides local terminator |
| | | |power and terminator power to BUS. |
+-------+-------+-------+------------------------------------+
W4 Remote LED Option
---------------------
x W4 CLOSED LED on Device Electronics board is enabled.
OPEN LED (user supplied) at J7 is enabled.
W10/11 Spindle Sync Termination
--------------------------------
W10/W11 CLOSED Spindle Sync is terminated
OPEN Spindle Sync is not terminated
The Rotational Position Locking field (MODE SELECT command, Page Code
04h) is used to specify spindle synchronization operation.
Unsynchronized: If the drive is set to Unsynchronized (RPL = 00b), it
ignores the SLAVE SYNC signal.
Slave: If the drive is set to Slave (RPL = 01b), it does not generate
the MASTER SYNC signal or the SLAVE SYNC signal but synchronizes its
index to the SLAVE SYNC signal (J2, pin 1) generated by an external
source.
Signal termination is placed on the SLAVE SYNC signal at the first
device and the last device in the chain only.
Master: If the drive is set to Master (RPL = 10b), it generates the
SLAVE SYNC signal (J2, pin 1) for use directly by the slave drives.
Signal termination is placed on the SLAVE SYNC signal at the first
device and the last device in the chain only.
Master Control: If the drive is set to Master Control (RPL = 11b), it
generates the MASTER SYNC signal (J2, pin 3). This output is used by
the controller to generate the SLAVE SYNC signal (J2, pin 1) for the
slaves.
Signal termination is placed on the MASTER SYNC signal at the first
device and the last device in the chain only.
Signal termination is placed on the SLAVE SYNC signal at the first
device and the last device in the chain only.
J3 DC Power and pin connector assignments
-------------------------------------------
-------------------+
--+ +-----J3-----+| pin 1 +12 VDC
1| | 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
**********************************************************************
MICROPL. 2112WD/2112WS PRODUCT DESCRIPTION 135863 REV. A
Notes on Installation
=====================
Recommended mounting orientations
---------------------------------
horizontally vertically
+-----------------+ +--+ +--+
| | | +-----+ +-----+ |
| | | | | | | |
+-+-----------------+-+ | | | | | |
+---------------------+ | | | | | |
| | | | | |
| | | | | |
| +-----+ +-----+ |
+--+ +--+
The drives use industry-standard mounting for 3 -inch full-height
Winchester disk drives.
The drives are designed such that the outer frame should be hard-
mounted to the host equipment; no additional/external shock mounts
should be used.
Recommend orientation is vertical on either side, or horizontal with
the Device Electronics board down; other mounting orientations may be
used.
No matter what mounting orientation is used, Micropolis specifies
that the maximum HDA casting temperature not exceed 60*C (140*F).
Caution:
The mounting screws must be selected so that they do not penetrate
the bottom mounting holes by more than 0.20 inches or the side mount-
ing holes by more than 0.156 inches.
Screws that are too long will short to PCBA components and/or prevent
proper operation of the shock mount system.
Mounting holes
--------------
3 per side and 4 on bottom #6-32 UNC-2B thru.
Multiple-Drive Systems
----------------------
Drive #1
+------HOST------+ +-----------------+
| +-----------+ +--+-SCSI-BUS-----+ J1 |
| |Terminators| | | +------+ J3 J4 |
| +-----------+ | | | +--------+--------+
| | | | +------------------+
+----------------+ | | Drive #2 |
| | +-----------------+ |
+-------+------+ J1 | |
| o------+ J3 J4 | |
| | +--------+--------+ |
| | +------------------o
| | Drive #3 |
| | +-----------------+ |
+-------+------+ J1 | |
| o------+ J3 J4 | |
| | +--------+--------+ |
| | +------------------o
| | Drive #4 |
| | +--------------+--+ |
+-------+------+ J1 |T | |
o------+ J3 J4 +--+ |
---DC-VOLTAGES-----+ +--------+--------+ |
---GROUND--------------------------o------------------+
T = TERMINATORS
Terminators are installed ONLY in the last physical drive in the
control chain.
Connection J4 is provided for grounding; system characteristics
determine the proper ground connection.
J1 Signal Connector
-------------------
Recommended Cable: AMP P/N 2-57013-1 or equivalent
Mating connector: AMP P/N 786090-7 or equivalent
J2 Spindle Synchronization connector
------------------------------------
Recommended mating connector: MOLEX 10-11-2043 or equivalent
Pins: MOLEX 08-50-0005
Suggested wire size: 22-24 AWG for all pins
J3 Power Connector
------------------
Recommended mating connector: AMP 1-480424-0 or equivalent
Pins: AMP 350078-4
Suggested wire size: 18 AWG (minimum) for all pins.
J4 Ground Connector
-------------------
3/16-inch spade lug J4 is provided for grounding. System character-
istics determine proper ground connection.
Recommended mating connector: AMP 60972-2 or equivalent
J7 Remote LED Connector
-----------------------
Recommended mating connector: Dupont 69305-002 or equivalent
Pins: Dupont 77138-001
Suggested wire size: 26-30 AWG for all pins
SINGLE-ENDED Interface Electrical Characteristics
-------------------------------------------------
Interface control and status signals are digital (open collector TTL)
using industry-standard transmitters and receivers which provide
a terminated, single-ended system.
For active termination, the assigned signals are terminated with 110
ohms to +2.85V (nominal). For passive termination, the signals are
terminated with 220 ohms to +5V (nominal) and 330 ohms to ground. All
signals use open-collector or tri-state drivers.
Single-ended drivers and receivers allow a maximum cable length of
six meters (primarily for connection within a cabinet).
Signal transmission requires a single 68-conductor (flat or twisted
pair) cable. A characteristic impedance of 100 ( 10%) ohms is
recommended.
a. Input Characteristics
Each of the drive's signal receivers has the following
characteristics when measured at the interface connector.
1) Low-level input voltage (Signal true) = 0.0 VDC to 0.8 VDC
2) High-level input voltage (Signal false) = 2.0 VDC to 5.25 VDC
3) Low-level input current = -0.4 milliamps at 0.5 VDC
4) High-level input current = 0.1 milliamps at 2.7 VDC
5) Minimum input hysteresis = 0.2 VDC
6) Maximum input capacitance = 25 pF
b. Output Characteristics
Each of the drive's signal drivers has the following
characteristics when measured at the interface connector.
1) Low-level input coltage (Signal assertion) = 0.0 VDC to 0.5
VDC
2) High-level input voltage (Signal negation) = 2.5 VDC to 5.25
VDC
3) Minimum driver output capability = 48 milliamps (sinking) at
0.5 VDC.
c. Terminator Power (TERMPWR at Pins 33,34,35, and 36)
Terminator Power has the following requirements:
V(TERM) = 4.25 VDC to 5.25 VDC
1500 milliamps minimum source drive capability, with 2.0 amp
recommended current limiting (e.g., a fuse).
The drive will have a terminator power bus load of 1.0-milliamp,
maximum (except for the purposes of providing power to an
internal terminator).
The drive provides keyed connectors to prevent accidental grounding
or misconnection of terminator power.
DIFFERENTIAL Interface Electrical Characteristics
-------------------------------------------------
Differential interface signals consist of two signal lines which are
denoted +SIGNAL and -SIGNAL.
A signal is defined as true when the +SIGNAL is more positive than
the -SIGNAL.
A signal is defined as false when the -SIGNAL is more positive than
the +SIGNAL.
Differential drivers and receivers allow a maximum cable length of
25 meters.
Signal transmission requires a single 68-conductor cable. A
characteristic impedance of 100 ( 10%) ohms is recommended for un-
shielded flat or twisted pair ribbon cable.
A minimum conductor size of 28 AWG should be employed to minimize
noise effects and ensure proper distribution of optional terminator
power.
A stub length of no more than 0.2 meters is allowed off the main-line
interconnection within any connected equipment.
a. Input Characteristics
Each of the drive's signal receivers has the following
characteristics when measured at the interface connector.
I (input current on either input) = 2.0 milliamps, maximum
Note: These characteristics include both receivers and passive
drivers.
This requirement is met with the input voltage varying between
-7V and +12V, with power either on or off, and with hysteresis
equaling 35 millivolts, minimum.
b. Output Characteristics
Each driven signal has the following characteristics when
measured at the interface connector.
VOL (low-level output voltage) = 1.7V maximum at IOL
where IOL = 55 milliamps
VOH (high-level output voltage) = 2.7V maximum at IOH
where IOH = -55 milliamps
VOD (differential voltage) = 1.0V minimum, with common-mode
voltage ranges from -7 to +12
VOL and VOH are measured between the output terminal and the
SCSI device's logic ground reference.
c. Terminator Power (TERMPWR at Pins 33, 34, 35, and 36)
Terminator Power has the following requirements:
V(TERM) = 4.0 VDC to 5.25 VDC
1000 milliamps minimum source drive capability, with 1.0 amp
recommended current limiting (e.g., a fuse).
1.0-milliamp maximum bus loading (except for the purposes of
providing power to an internal terminator).
The drive provides keyed connectors to prevent accidental
grounding or misconnection of terminator power.
Adjustments and Maintenance
---------------------------
The drives requires no adjustments or periodic maintenance;
additionally, no mechanical adjustments are required to prepare a
system for handling or shipment.
Field-Replacable Components
---------------------------
The concept of repair by replacement of complete functional
components is utilized in the drive, resulting in an MTTR of less
than 15 minutes.
Data Transfers
--------------
The drives are capable of transferring data up to 20 MBytes/sec in
synchronous mode and 5 MBytes/sec in asynchronous mode.
**********************************************************************
F E A T U R E S
**********************************************************************
MICROPL. 2112WD/2112WS PRODUCT DESCRIPTION 135863 REV. A
The single-ended and differential interface drive is compatible with
the "ANSI CCS" and "SCSI-2" versions of the industry-standard Small
Computer System Interface (SCSI) specification.
Media Defects
-------------
Media defects are physical characteristics of the media which result
in repetitive read errors when a functional drive is operated within
specified operating conditions.
At the time of manufacture, a media test system evaluates every
drive and identifies each media defect location. The defective
areas are identified by head address (HD), cylinder address (CYL),
and number of bytes from Index (BFI).
The list of manufacturer-found defects is stored on the drive in a
reserved, write-protected area accessible by the SCSI controller.
This list is known as the MDL (Manufacturers Defect List) or PList
(Primary Defect List).
A printed listing of the defects is also shipped with each drive. The
entries it contains can be mapped out (reassigned) automatically at
format time by appropriate format control parameter bits.
Seek Time
---------
----------------------------------+--------+
Track-to-Track read msec. typ. | 1.5 |
write msec. typ. | 2.5 |
Average msec. typ. | 10 |
msec. max. | 25 |
Latency msec. avg. | 5.56 |
----------------------------------+--------+
Internal Data Rate
------------------
24 to 40 MHz
Sector Size = Variable; programmable up to 4096 bytes.
Specific Features of the Drives
-------------------------------
2112WS Drive
- Industry-standard 68-pin, single-ended interface connection.
- 13.5 Watts (46.1 Btu/hr) typical power dissipation.
- Industry-standard mounting.
- Active termination for improved bus termination/compatibility.
2112WD Drive
- Industry-standard 68-pin, differential interface connection.
- 15.5 Watts (52.9 Btu/hr) typical power dissipation.
- Small increase in power consumption due to use if differential
transceivers.
- Protected against accidental misconnection by standard DIFFSENS
signal.
- Industry-standard mounting.
- Schematically identical to the Single-Ended models except for
termination, differential drivers/receivers, and SCSI Interface
Connector pin assignments.
- Uses the same SCSI control firmware for identical command and
feature set to Single-Ended models.
- Differential mechanics identical to Single-Ended.