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EK-DS002-IG-C01

May 1993

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Document:	Digital Storage Products Disk Drive (Models DSP5200 & DSP5350)
Order Number:	EK-DS002-IG
Revision:	C01
Pages:	20
Original Filename:

OCR Text

Digital Storage Products
Model DSP5200
Model DSP5350
Installation Guide
Order Number: EK-DS002-IG. C01

May 1993
The information in this document is subject to change
without notice and should not be construed as a
commitment by Digital Equipment Corporation. Digital
Equipment Corporation assumes no responsibility for any
errors that may appear in this document.
No responsibility is assumed for the use or reliability of
software on equipment that is not supplied by Digital
Equipment Corporation or its affiliated companies.
Restricted Rights: Use, duplication, or disclosure by the
U.S. Government is subject to restrictions as set forth in
subparagraph (c)(1)(ii) of the Rights in Technical Data and
Computer Software clause at DFARS 252.227-7013.
© Digital Equipment Corporation 1993.
All Rights Reserved.
Printed in U.S.A.
The following are trademarks of Digital Equipment
Corporation: DEC, DECmailer, DECservice, DSA,
DSSI, MicroVAX, MSCP, Q–bus, SERVICenter, VAX,
VAXsimPLUS, VMS, and the DIGITAL logo.

Contents
1
2
3
4
5
6

Introduction . . . . . . . . . . . . . . . . .
SCSI Address and Options
Selections . . . . . . . . . . . . . . . . . .
SCSI Bus Termination . . . . . . . . . .
Power Connections and
Requirements . . . . . . . . . . . . . . . .
Mounting . . . . . . . . . . . . . . . . . . .
Summary of Specifications . . . . . . .

1
2
9
12
14
15

iii

1 Introduction
This manual presents the information needed to
configure and install your Digital Storage Products
SCSI disk drive. Before unpacking or handling the
drive or attempting any installation, please read
through this manual, including all warnings and
cautions.
The Model DSP5200 is a full-height 5.25 inch disk
drive with a formatted capacity of 2000 megabytes
and a single-ended (S) or differential (D) SCSI-2
interface.
The Model DSP5350 is a full-height 5.25 inch disk
drive with a formatted capacity of 3570 megabytes
and a single-ended (S) SCSI-2 interface.

CAUTION
Handle the disk drive with care. Observe
antistatic precautions. Static electricity can
damage integrated circuits. Always use a
properly grounded wrist strap and antistatic
pad when removing the disk drive from its
antistatic bag and handling it outside the
bag.

2 SCSI Address and Options
Selections
An option connector on the printed circuit module is
used to set the SCSI address and select the various
operating options that are described in the following
paragraphs. Jumpers are placed across specific pins
in the connector to select the desired SCSI address
and operating options. The connector and various
jumper placements are shown in the figures that
follow.

SCSI Bus Address Selection
Three pairs of pins on the option connector are
used to set the disk drive’s address on the SCSI
bus. The drive will accept addresses 0 through
7. Each device on a SCSI bus must be assigned a
unique address. Typically the first drive on the bus is
assigned address 0, the second drive address 1, and
so on. SCSI address 7 is typically reserved for the
host adapter.
REAR VIEW
Power
Connector 21

Option
Connector

Pins 5,6

3,4

Note: Pins 21 and 22 on
DSP5350 only

22
1,2

ID JUMPER SETTINGS
SCSI ID Pins 5,6 3,4 1,2
0
1
2
3
4
5
6
7

Spin Up Option Selection
When a jumper is installed across pins 13 and 14 of
the option connector the disk drive will spin up when
power is applied. Without the jumper the drive waits
for a START UNIT command before spinning up.
The disk drive spins down when power is removed or
when a fault condition is detected.

REAR VIEW
Power
Connector 21

Option
Connector

Note: Pins 21 and 22 on
DSP5350 only

2
Pins 13,14 SPINUP Jumper
Spin up when power is applied.
Wait for START UNIT command.

Pins 19,20 FIRMWARE LOAD Jumper
Firmware load option enabled.
Firmware load option disabled.

Firmware Load Option Selection
The capability to update the drive’s internal flash
ROM has been provided to allow firmware updates
to be made in the field. In order to update the flash
ROM the following steps should be taken:

1. Apply power to the drive.
2. Install the jumper across pins 19 and 20 of the
option connector.

3. Load the firmware update.
4. Remove jumper when the update is complete.
Power should NOT be applied to the drive with the
jumper installed.

LED Indicator Options Selections
The bottom rear of the disk drive has two surface
mounted LED indicators, busy (BSY, green) and fault
(FLT, amber). These indicators are operational only
when jumpers are installed as described below.
BOTTOM VIEW

Busy (BSY, green) LED
Fault (FLT, amber) LED
(Connector Side)

REAR VIEW
Power
Connector 21

Option
Connector

Note: Pins 21 and 22 on
DSP5350 only

2
Pins 7,8 FAULT LED Jumper
Onboard Fault LED enabled.
Onboard Fault LED disabled.

Pins 9,10 BUSY LED Jumper
Onboard Busy LED enabled.
Onboard Busy LED disabled.

The busy LED indicates that the drive is working on
a SCSI command. It is not equivalent to the SCSI
BSY signal. The fault LED indicates a drive fault
condition. It is normal for both indicators, if enabled
by their jumpers, to light briefly upon application of
power as a lamp test.

Remote Options
The option connector can be used to remotely control
or monitor certain drive functions. When the remote
control panel is to be used, jumpers are removed from
the option connector and are replaced by a cable(s)
to the remote panel. The supported remote options
include:
•

Selection of SCSI address from external switches,
such as on an operator control panel.

•

Monitoring busy and fault conditions with
external LED indicators instead of those on
the drive. (The user must provide external
current-limiting resistors to limit the current to
6mA or less. No current limiting resistors are
necessary if the LED is rated to handle up to 7
mA maximum.)
A front bezel with a BUSY LED mounted
may have been installed at the factory. The
associated cable has to be connected to the
option connector in the following manner:
black lead to pin 9 and red lead to pin 11.
Note
In this case no current-limiting resistors are
needed.

•

Remote power supply notification to the drive of
AC power failure.
If the power supply warns the drive at least
1.0 milliseconds before the voltages become
unsafe, the drive will prevent write splices (write
interruptions within a data sector). Unsafe
voltages levels (measured at the drive connector)
are voltages outside the following;
4.690 to 5.557 for the +5Vdc supply
10.994 to 13.399 for the +12Vdc supply

The following diagram shows proper connection of
remote options.
DISK DRIVE

+5Vdc out

FLT_SINK L

OPTION
CONNECTOR

EXTERNAL USER
PROVIDED DEVICES

11
External *
Current
Limiting
Resistors
7

BSY_SINK L

ID_0 L

Fault LED

Busy LED

ID_1 L

ID_2 L

SCSI
Address
Switches

AC_LOW L

AC warning circuit.
Logic low on pin 12 indicates
AC failure. 1 millisecond advanced
warning required.

* The 470 ohm current limiting resistors on the
module are not shown in this drawing.

Spindle Synchronization Option (DSP5350 only)
Spindle synchronization for the DSP5350 is enabled
by the installation of a daisy-chain cable from drive
to drive. This cable should connect pin 21 to the
daisy-chained SPINDLE_SYNC_REF SIGNAL, using
pin 22 as its ground reference.

REAR VIEW
Power
Connector 21

Option
Connector

Pins 21,22 SPINDLE SYNC Cable
Spindle Sync Reference is enabled
No connection to Spindle Sync Reference

3 SCSI Bus Termination
DSP5200 Termination
The DSP5200 disk drive can provide terminator
power to its own termination resistor packs (if
installed) and/or to the SCSI bus. Alternatively,
the drive’s termination resistor packs can be powered
from the SCSI bus. The figure below shows the
proper jumper arrangements for each terminator
power configuration.
In all cases, the drive’s termination resistor packs are
to be installed ONLY if the drive is at the end of the
SCSI bus.
REAR VIEW
Option
Power
Connector 19 Connector

Pins 17,18
Pins 15,16
Pin
17 15

No drive power provided to SCSI TERMPWR.
No power to drive terminator resistor packs..
Resistor packs must be removed.
Drive provides termination power to the drive’s
terminator resistor packs (if installed).
SCSI bus provides termination power to the drive’s
terminator resistor packs (if installed).
Drive provides termination power to the drive’s
terminator resistor packs (if installed) and to SCSI bus.

The following figure shows the proper placement of
the termination resistor packs on the drive module.

NOTE THAT:
S (single-ended) units use 8-pin packs
D (differential) units use 14-pin packs

Resistor Packs
BOTTOM VIEW

SCSI Connector

Pin 1 designation on the
resistor packs are usually
a "dot" or a "vertical bar".

Pin 1
Designation

DSP5350 Termination
The DSP5350 disk drive is capable of supplying
termination power to the SCSI bus, as well as
providing active termination to the bus. The
DSP5350 drive does not use removable resistor
packs for termination. The figure shows the proper
jumper arrangements for each terminator power
configuration.
Active termination should be enabled ONLY if the
drive is at the end of the SCSI bus.
REAR VIEW
Power
Connector 21

Option
Connector

Pins 17,18
Pins 15,16
Pin
17 15

SCSI TERMPWR is NOT provided by the drive.
Active termination is DISABLED.
SCSI TERMPWR is NOT provided by the drive.
Active termination is ENABLED. (drive at end
of SCSI cable)
TERMPWR is provided to SCSI bus by the drive.
Active termination is DISABLED.
TERMPWR is provided to SCSI bus by the drive.
Active termination is ENABLED. (drive at end
of SCSI cable)

4 Power Connections and
Requirements
Each disk drive requires +5 and +12 volt DC which
is supplied from an external source by means of the
4-pin power connector of the drive.

REAR VIEW
Power
Connector 21

Option
Connector

22
Pin 1

Power Connector
Pin 1 +12VDC
Pin 2 Gnd (+12V Return)
Pin 3 Gnd ( +5V Return)
Pin 4 +5VDC

Note: Pins 21 and 22 on
DSP5350 only

Voltage &
Regulation:
DSP5200S
DSP5200D
DSP5350

+5VDC

+12VDC

±5%
±5%
±5%

±5% (±6% during spin-up)
±5% (±6% during spin-up)
±5% (±5% during spin-up)

Ripple &
Noise:
DSP5200S
DSP5200D
DSP5350

+5VDC

+12VDC

<100mv p-p
<100mv p-p
<75mv p-p

<200mv p-p
<200mv p-p
<150mv p-p

Current:
+5VDC Current

Typical

Maximum

DSP5200S
DSP5200D
DSP5350

1.0A
1.4A
1.0A

1.2A
1.6A
1.2A

+12VDC Current

Typical

Maximum

Spin-up
Spinning—no seeks
Continuous random seeks

4.3A
1.0A
1.5A

5.0A
1.2A
1.8A

Total power with
continuous random seeks

Typical

Maximum

DSP5200S
DSP5200D
DSP5350

22.9W
25.0W
35.0W

28.4W
30.5W
40.8W

Power:

5 Mounting
The disk drive may be mounted in any orientation.
Allow 0.10 inches clearance between the HDA and all
adjancent surfaces, and sufficent slack in all cables,
to provide for motion of the drive on its shock mounts
relative to the drive frame.
The drive is mounted with four 6-32 screws. The
mounting screws should not exceed more than 0.02
inches beyond the inside surface on the drive frame.
CAUTION
Screws longer than necessary will defeat the
shock mounting and could damage the drive.

DSP5200S/DSP5200D/DSP5350
MOUNTING HOLES (Side View)

warranty

1.460
.860

.970

3.120
4.740

DSP5200S/DSP5200D/DSP5350
DSP5200S/D MOUNTING HOLES (Bottom View)

5.500

3.120

2.050

6 Summary of Specifications

DSP5200/DSP5350
Single−Ended SCSI 50−Pin Connector Pin Assignments
Pin

Signal

−DB (0)

−DB (7)

GROUND

−MSG

−DB (1)

−DB (P)

−ATN

−SEL

−DB (2)

GROUND

−C/D

−DB (3)

GROUND
RESERVED

48
50

−REQ

−DB (4)

36
38

−BSY

22
24

−DB (5)

TERMPWR

−RST

−ACK

−I/O

14 −DB (6)
28 RESERVED
Notes:
1. All odd numbered pins (except pins 23,25,27) must be connected to ground.
2. Pin 25 should be left open.
3. Pin 26 (SCSI_TERMPWR) is reserved for terminator resistor power source.
4. The minus sign indicates an active low signal..

DSP5200
Differential SCSI 50−Pin Connector Pin Assignments
Pin

Signal
1 GROUND
2 GROUND

Pin
14

−DB (5)

Signal

Pin
27

RESERVED

+DB (6)

RESERVED

Pin Signal
39 +MSG
40 −MSG

3 +DB (0)

−DB (6)

+ATN

41 +SEL

4 −DB (0)
5 +DB (1)

+DB (7)

−ATN

42 −SEL

−DB (7)

GROUND

43 +C/D

6 −DB (1)
7 +DB (2)

+DB (P)

GROUND

44 −C/D

−DB (P)

+BSY

45 +REQ

8 −DB (2)
9 +DB (3)

DIFFSENS

−BSY

46 −REQ

GROUND

+ACK

47 +I/O

10 −DB (3)

RESERVED

12 −DB (4)

RESERVED
TERMPWR

36
37

−ACK

11 +DB (4)

23
24

−RST

48 −I/O
49 GROUND
50 GROUND

13 +DB (5)

TERMPWR

Signal

+RST

Notes:
1. The minus sign indicates an active low signal..
2. Some shielded flat ribbon cables use pin 1 as a connections to shield..

Disk Drive Functional Specifications
DSP5200

DSP5350

SCSI−2
2,000

SCSI−2
3,570

Average seek time (ms)
Bits per inch (max.)
Tracks per inch
Tracks per surface
Surfaces per drive
Sectors per track

12.9
43,880
2,432
2,620
21
71

12.0
50,500
2,756
2,570
25
119

Sector capacity

520

512−520

2.2

6.9

5.0
10.0
3,600

5.0
10.0
5,400

Interface
Formatted storage
(Mbytes)

(bytes)

Transfer rate

(to/from media − Mbytes/s)

Transfer rate to bus
(synchronous − Mbytes/s)

Normal mode
Fast mode
Rotational speed
(RPM)

Environmental Specifications
Ambient temperature
Operating
Nonoperating
Maximum wet bulb
(noncondensing)
Operating
Nonoperating
Relative humidity
Operating
Nonoperating
Altitude
Operating
Nonoperating

10C to 50C(50F to 122F)
−40C to 66C(−40F to 151F)
28.0C(78F)
46C(115F)
10% to 90%
8% to 95%
2,500m (8,000 ft)
4,878m (16,000 ft)