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EK-DECAC-IG-C01

September 1992

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Document:	DECmpp 12000/Sx Model 100 Hardware Installation Guide
Order Number:	EK-DECAC-IG
Revision:	C01
Pages:	72
Original Filename:

OCR Text

DECmpp 12000/Sx Model 100
Hardware Installation Guide
Part Number: EK–DECAC–IG. C01
September 1992
This manual describes the site preparation and installation procedures
for the DECmpp 12000/Sx and DECmpp 12000–LC/Sx Series hardware.

Revision/Update Information:

This document has been revised for
DECmpp Version 1.1.

Operating System and Version: ULTRIX Version 4.2A.
Future releases may require higher
versions.
Software Version:

Digital Equipment Corporation
Maynard, Massachusetts

DECmpp 12000/Sx Version 1.1.

First Printing, January 1992
Revised, September 1992
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.
The software described in this document is furnished under a license and may be used or copied
only in accordance with the terms of such license.
NOTICE—Class A Computing Device:
This equipment generates, uses, and may emit radio frequency energy. The equipment has been
type tested and found to comply with the limits for a Class A computing device pursuant to Subpart
J or Part 15 of FCC rules, which are designed to provide reasonable protection against such radio
frequency interference when operated in a commercial environment. Operation of this equipment in
a residential area may cause interference; in which case, measures taken to correct the interference
are at the user’s expense.
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 1992.
All Rights Reserved.
The postpaid Reader’s Comments forms at the end of this document request your critical evaluation
to assist in preparing future documentation.
The following are trademarks of Digital Equipment Corporation: DECnet, DECstation, DECsupport,
DECsystem, DECwindows, Rdb/VMS, ThinWire, TURBOchannel, ULTRIX, VAX, VAX DOCUMENT,
VMS, and the DIGITAL logo.
The following are registered trademarks of the MasPar Computer Corporation: MasPar and
the MasPar logo. The following are trademarks of the MasPar Computer Corporation: MasPar
Data Display Library (MPDDL), MasPar FORTRAN (MPF), MasPar Input/Output Channel,
MasPar Parallel Application Language (MPL), MasPar Parallel Disk Array (MPDA), and MasPar
Programming Environment (MPPE). UNIX is a registered trademark of UNIX System Laboratories,
Inc.

This document was prepared using VAX DOCUMENT, Version 2.0.

Contents
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

vii

1 Introduction
2 Site Preparation
2.1
DECmpp 12000/Sx Site Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1.1
Physical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1.1.1
Size and Service Clearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1.1.2
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1.2
Electrical Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1.2.1
Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1.3
Environmental Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1.3.1
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1.3.2
Temperature and Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1.3.3
Static Electricity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1.4
Additional Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1.4.1
Modem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1.4.2
Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2
DECmpp 12000–LC/Sx Site Preparation . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.1
Physical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.1.1
Size and Service Clearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.1.2
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.2
Electrical Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.2.1
Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.3
Environmental Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.3.1
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.3.2
Temperature and Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.3.3
Static Electricity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.4
Additional Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.4.1
Modem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.4.2
Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3
Parallel Disk Array Site Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3.1
Physical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3.1.1
Size and Service Clearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3.1.2
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3.2
Power and Cooling Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3.3
Power and Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . .

2–2
2–2
2–2
2–2
2–3
2–5
2–6
2–6
2–6
2–7
2–7
2–7
2–7
2–8
2–8
2–8
2–8
2–9
2–10
2–10
2–10
2–11
2–11
2–11
2–11
2–11
2–12
2–12
2–12
2–12
2–13
2–13

iii

3 System Hardware Installation
3.1
Installation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2
Unpacking and Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.1
Unpacking and Positioning the DECmpp 12000/Sx Server . . . . . . . . .
3.2.2
Unpacking and Positioning the DECmpp 12000–LC/Sx Server . . . . . .
3.2.3
Unpacking and Positioning the DECmpp 12000/Sx DPU . . . . . . . . . .
3.2.3.1
Assembling the Enclosure Skirts . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.4
Unpacking and Positioning the DECmpp 12000–LC/Sx DPU . . . . . . .
3.3
Front-End Server Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3.1
Installing the DECsystem 5900 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3.2
Installing the DECstation 5000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4
Data Parallel Unit Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4.1
Handling PCBs Correctly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4.2
Data Parallel Unit PCBs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4.2.1
Array Control Unit Jumper Settings . . . . . . . . . . . . . . . . . . . . . . .
3.4.3
Data Parallel Unit Card Cage Access . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4.3.1
Data Parallel Unit Card Cage Slots . . . . . . . . . . . . . . . . . . . . . . . .
3.4.3.2
Installing the PCBs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4.4
Data Parallel Unit Backplane Jumpers . . . . . . . . . . . . . . . . . . . . . . . .
3.4.5
Connecting the Data Parallel Unit and DECstation Cables . . . . . . . . .
3.4.5.1
Connecting the Internal DPU Cables (DECmpp 12000–LC only)
....................................................
3.4.5.2
Connecting the External DPU Cables . . . . . . . . . . . . . . . . . . . . . .
3.4.6
Preparing the System Modem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4.7
Connecting the DPU Power Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5
DPU Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5.1
Front Controls and Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5.2
Rear Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.6
Powering Up the DPU for the First Time . . . . . . . . . . . . . . . . . . . . . . . . .
3.6.1
Powerup Sequence Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.6.2
Powerdown Sequence Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–1
3–2
3–2
3–2
3–3
3–5
3–7
3–12
3–12
3–13
3–13
3–14
3–15
3–15
3–15
3–16
3–19
3–19
3–22
3–23
3–23
3–24
3–25
3–26
3–26
3–27
3–28
3–34
3–34

A Installation Checklist
A.1

Installation Steps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

A–1

B Power Cable Wiring and Replacement
B.1
B.1.1
B.1.2

Power Cable Wires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wire Ends . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing the Power Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

C DECmpp Variations and Options
Index

B–1
B–1
B–1

Figures
1–1
1–2
1–3
2–1
2–2
3–1
3–2
3–3
3–4
3–5
3–6
3–7
3–8
3–9
3–10
3–11
3–12
3–13
3–14
3–15
3–16
3–17
3–18
3–19
3–20
3–21
3–22
3–23
3–24
3–25

Typical DECmpp 12000/Sx Installation with DECsystem 5900
Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Typical DECmpp 12000/Sx Installation with DECstation 5000/240
Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Typical DECmpp 12000–LC Installation . . . . . . . . . . . . . . . . . . . . . . .
DECmpp 12000 Enclosure Dimensions . . . . . . . . . . . . . . . . . . . . . . . .
DECmpp 12000-LC/Sx DPU Enclosure Dimensions . . . . . . . . . . . . . . .
Removing Enclosure Shipping Bracket . . . . . . . . . . . . . . . . . . . . . . . .
DECmpp 12000/Sx DPU Enclosure Levelers . . . . . . . . . . . . . . . . . . . .
Front and Side Skirts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Skirt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unopened Shipping Container . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing the Front Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ramp Ready to Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting the Levelers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DECsystem 5900 Power Controller . . . . . . . . . . . . . . . . . . . . . . . . . . .
DECsystem 5900 System Power Switch . . . . . . . . . . . . . . . . . . . . . . . .
PCB Ejector Levers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Array Control Unit Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DECmpp 12000/Sx System and Card Cage (Rear View) . . . . . . . . . . . .
Data Parallel Unit Card Cage Slots . . . . . . . . . . . . . . . . . . . . . . . . . . .
Data Parallel Unit Backplane Jumper Locations . . . . . . . . . . . . . . . . .
ACU/MPVMEbus Backplane Jumpers . . . . . . . . . . . . . . . . . . . . . . . . .
DPU-Server Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DECsystem 5900 CPU Rear Panel Connectors . . . . . . . . . . . . . . . . . .
DECstation 5000 Rear Panel Connectors . . . . . . . . . . . . . . . . . . . . . . .
Data Parallel Unit Front Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Data Parallel Unit Rear Controls and Indicators . . . . . . . . . . . . . . . . .
DPU Backplane Voltage Test Points . . . . . . . . . . . . . . . . . . . . . . . . . . .
DECmpp 12000 Power Supply Voltage Adjustments . . . . . . . . . . . . . .
DECmpp 12000-LC/Sx HC Power Supply and Voltage Adjustments
.......................................................
DECmpp 12000-LC/Sx Powertec Power Supply and Voltage
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–2
1–2
1–3
2–3
2–9
3–3
3–4
3–5
3–6
3–8
3–9
3–10
3–11
3–12
3–12
3–14
3–16
3–17
3–18
3–20
3–21
3–22
3–24
3–24
3–26
3–27
3–29
3–30
3–31
3–31

Tables
1
2–1
2–2
2–3
2–4
2–5
2–6
3–1
C–1

Related Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DECmpp 12000/Sx Power Specifications . . . . . . . . . . . . . . . . . . . . . . .
Alternate Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DECmpp 12000/Sx Temperature/Humidity Specifications . . . . . . . . . .
DECmpp 12000-LC/Sx Power Specifications . . . . . . . . . . . . . . . . . . . .
DECmpp 12000-LC/Sx Temperature/Humidity Specifications . . . . . . .
PDA Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ACU Jumper Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DECmpp 12000/Sx Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

viii
2–4
2–5
2–6
2–10
2–11
2–13
3–15
C–1

C–2
C–3
C–4

DECmpp 12000-LC/Sx Series Systems . . . . . . . . . . . . . . . . . . . . . . . . .
DECmpp 12000 Processor Element Array Options . . . . . . . . . . . . . . . .
DECmpp MPVMEbus Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

C–3
C–3
C–3

Preface
This manual provides site preparation and installation procedures for DECmpp
12000/Sx and DECmpp 12000–LC/Sx Series systems.
If you need assistance during the installation, call:
CUSTOMER SUPPORT CENTER
1-800-354-9000 (U.S. and Canada)
Ask for DECmpp Support

Intended Audience
This guide is for use by Digital Services personnel and by self-maintenance
customers. Installation begins when site preparation is completed and the
DECmpp 12000/Sx system has been delivered on a skid to the computer room.
If necessary, refer to the DECstation 5000 Site Preparation Guide or the
DECsystem 5900 Site Preparation Guide, depending on your configuration.

Required Tools
The tools required to unpack and install the DECmpp 12000/Sx system are:
•

Scissors or knife for opening packages

•

Screwdrivers: variety of Phillips and conventional flat blades

•

Wrenches: 3/4-inch to remove hold-down brackets and 9/16-inch to bring feet
down

•

Allen wrench, 1/4-inch, to open cabinet doors

•

Pliers: a thin, long-nose to add or remove backplane jumpers

Document Structure
The DECmpp 12000/Sx Hardware Installation Guide includes three chapters and
three appendixes.
•

Chapter 1 provides introductory information for the DECmpp 12000/Sx Series
product.

•

Chapter 2 provides site preparation information.

•

Chapter 3 describes how to install the cabinet and system components. This
chapter also provides the procedures for turning the system on and off and
booting.

•

Appendix A is an installation checklist.

vii

•

Appendix B provides instructions on power cable wiring and cable
replacement for the DECmpp 12000/Sx.

•

Appendix C provides a list of part numbers for all DECmpp 12000/Sx series
system configurations and options associated with the DPU.

For DECmpp 12000/Sx systems, you also need the DECsystem 5900 Installation
Guide or the DECstation 5000 Hardware Installation Guide, depending upon the
server ordered. This document is included with the server.
For DECmpp 12000–LC/Sx systems, you also need the DECstation 5000
Hardware Installation Guide. This document is included with the DECstation
5000 server.

Related Documents
Table 1 lists documents that provide additional information about the DECmpp
12000/Sx system:
Table 1 Related Documents

viii

Document Title

Order Number

DECmpp 12000/Sx System Overview Manual

AA-PMAPB-TE

DECmpp 12000/Sx System Administration Guide

AA-PKU3C-TE

DECmpp 12000/Sx Architecture Specification

AA-PMASB-TE

DECmpp 12000/Sx Hardware Service Manual

EK-DECAC-SM

DECmpp 12000/Sx Parallel Disk Array Reference Manual

EK-DECAB-RM

DECmpp 12000/Sx Parallel VME Reference Manual

EK-DECAB-PM

DECstation 5000/240 User Documentation Kit

EK-PM380-DK

DECstation 5000/240 Maintenance Guide

EK-PM38C-MG

DECstation 5000/240 Pocket Service Guide

EK-PM38D-PG

DECsystem 5900 Site Preparation Guide

EK-D590A-SP

DECsystem 5900 Installation Guide

EK-D590A-IN

DECsystem 5900 Owner’s Guide

EK-D590A-OG

DECsystem 5900 Pocket Service Guide

EK-D590A-PS

DECsystem 5900 Enclosure Maintenance Manual

EK-D590A-EN

DWTVX-Ax VME I/O Subsystem Pocket Service Guide

EK-DWTVX-PS

T6000 Module Installation/Owner’s Card

EK-T6000-IN

Conventions
The following conventions are used throughout the DECmpp 12000/Sx
documentation set.
Convention

Meaning

Return

In examples, a key name shown within a box indicates that
you press a key on the keyboard. In text, a key name is not
enclosed in a box but is printed with an initial capital letter,
like Return.

Ctrl/x

A key combination, shown with a slash separating the two key
names, indicates that you hold down the first key while you
press the second key.

MB1, MB2, MB3

The buttons on a mouse. MB1 is the left button, MB2 is the
center button, and MB3 is the right button of a mouse whose
button arrangement is right-handed. It is possible to redefine
the mouse buttons.

A percent sign (%) represents the default user prompt for your
system.

A number sign (#) represents the default superuser (root)
prompt for your system.

In examples, a horizontal series of dots, or ellipsis, indicates
that additional parameters, values, or other information can be
entered.

..
.

In examples, a vertical series of dots, or vertical ellipsis,
indicates that a portion of the example is intentionally omitted.

[]

In syntax descriptions and functional descriptions, brackets
indicate optional items.

dpumanager(6)

Cross-references to the ULTRIX Reference Pages, which include
the appropriate section number in parentheses.

italicized text

In examples, italicized text denotes parameters, values, or
other information that will change from either session to
session or user to user. In text, italicized words or phrases are
used to add emphasis to important words, concepts, or titles of
manuals.

ULTRIX keywords

This typeface is used to indicate system output or the exact
name of a command, option, partition, pathname, directory, or
file.

Code examples

This typeface is used to display program coding examples.

UPPERCASE and
lowercase strings

The ULTRIX system differentiates between lowercase and
uppercase characters. Literal strings that appear in text,
examples, syntax descriptions, and function descriptions must
be entered exactly as shown.

Both the DECmpp 12000/Sx and DECmpp 12000–LC/Sx Series hardware systems
are described in this manual. However, because the two systems are very similar,
references to the DECmpp 12000 system also apply to the DECmpp 12000–LC
system, unless specific differences between the two systems are noted.
Three types of notes are used in this manual:
•

Note
Gives additional information or information particularly important to the
procedure.

•

Caution
Indicates potential damage to equipment or data.

•

Warning
Indicates potential injury to a person.

1
Introduction
DECmpp 12000/Sx Introduction
DECmpp 12000/Sx Series systems are powerful single-instruction, multiple data
(SIMD) computers, consisting of a data parallel unit (DPU), which performs the
parallel calculations, and a front-end server, running the ULTRIX operating
system. A high-speed VMEbus interface carries data between the DPU and the
front-end server.
The DPU contains the array control unit (ACU) printed circuit board (PCB)
and from 1 to 16 processor element (PE) array PCBs. The ACU controls the PE
arrays, which perform the parallel calculations. Each PE array PCB provides
1024 processor elements. The total collection of PE array PCBs in a system
comprise the PE array.
DECmpp 12000 systems support 1, 2, 4, 8, or 16 PE array PCBs and have 15
I/O slots for optional I/O PCBs. The DPU is housed within an H9A00 series
enclosure. DECmpp 12000 systems can be ordered with either a DECsystem
5900 server or a DECstation 5000/240 server. The DECsystem 5900 is contained
within a separate H9A00 series enclosure. This configuration is illustrated in
Figure 1–1. The DECstation 5000/240 is contained within two desktop boxes, one
for the CPU and one for storage expansion. This configuration is illustrated in
Figure 1–2.
DECmpp 12000–LC systems support 1, 2, or 4 PE array PCBs and have 5 I/O
slots for optional I/O PCBs. The DPU is contained within a low profile cabinet
and connects to a table-top DECstation 5000/240 server (Figure 1–3).
Any of the DECmpp 12000/Sx series system configurations may also contain an
optional Parallel Disk Array (PDA). The PDA subsystem is housed in a separate
H9A00 series enclosure.
Warning
Turning on power before you are instructed to do so can cause personal
injury or damage to equipment.

Introduction 1–1

Figure 1–1 Typical DECmpp 12000/Sx Installation with DECsystem 5900 Server

DECsystem 5900 Server

DECmpp 12000

Data Parallel Unit

Parallel Disk Array
(Optional)

Sx Series

Console
Monitor

MKV−040000314−19−RAGS

Figure 1–2 Typical DECmpp 12000/Sx Installation with DECstation 5000/240 Server

Data Parallel Unit

Parallel Disk Array
(Optional)

DECstation 5000/240
Server

MKV−040000314−46−RAGS

1–2 Introduction

Figure 1–3 Typical DECmpp 12000–LC Installation

Parallel Disk Array
(Optional)

Data Parallel Unit
DECstation 5000/240
Server

DECmpp 12000

MKV−040000314−23−RAGS

Introduction 1–3

2
Site Preparation
This chapter provides information about preparing a site for either the DECmpp
12000/Sx or DECmpp 12000–LC/Sx Series systems. It includes specifications
and a physical description for all system configurations. Chapter 1 provides
introductory material and naming conventions. Appendix C lists all DECmpp
system variations and options.
When preparing a site for the DECmpp system, it is best to plan for the future
and allow for equipment upgrades. For this reason, unless specifically stated
otherwise, the specifications provided here are for fully configured systems with
the maximum complement of PE array and I/O PCBs, disk drives, and front-end
server options.
Refer to Section 2.1 for DECmpp 12000/Sx Site Preparation.
Refer to Section 2.2 for DECmpp 12000–LC/Sx Site Preparation.
Refer to Section 2.3 for Parallel Disk Array Site Preparation.

Site Preparation 2–1

2.1 DECmpp 12000/Sx Site Preparation

2.1 DECmpp 12000/Sx Site Preparation
The following sections provide site preparation information for the DECmpp
12000/Sx system, including the DECsystem 5900 front-end server. If you are
preparing a site for a DECmpp 12000/Sx system that uses the DECstation 5000
/240 server, refer to Section 2.2 for server information. This section also contains
information on the VRT19 high resolution color monitor.

2.1.1 Physical Characteristics
Figure 2–1 shows the dimensions of each enclosure in the DECmpp 12000/Sx
configuration.
2.1.1.1 Size and Service Clearance
Space requirements include sufficient area to contain all of the equipment, and
to provide service clearance. Leave at least 92 mm (36 inches) of clearance in the
front and rear to access the DPU and DECsystem 5900 enclosures and to provide
adequate ventilation. No space is required on the sides of the enclosure, though
there must be some way to access the rear of all enclosures on a regular basis.
There must also be ample room for the power cables, network and other
data cables, including the video cable that connects the video monitor to the
DECsystem 5900. These should be out of the way, where they will not be stepped
on, tripped over, or otherwise disturbed.
The dimensions of each enclosure are as follows:
•

DECmpp 12000/Sx DPU and DECsystem 5900 enclosures (H9A00 series)
170 cm high, 61 cm wide, 86.4 cm deep (66.9 inches high, 24.0 inches wide,
34.0 inches deep)
The front door swings out with a 54 cm (22 inch) radius.

•

VT420 video terminal dimensions
31.2 cm high, 31.5 cm wide, 33.0 cm deep (12.3 inches high, 12.4 inches wide,
13.0 inches deep)
Keyboard—4.5 cm high, 47.8 cm wide, 17.8 cm deep (1.8 inches high, 18.8
inches wide, 7.0 inches deep)

2.1.1.2 Weight
The maximum weight for DECmpp 12000/Sx Series enclosures is:
•

DECsystem 5900 enclosure—476 kg (1050 pounds)

•

DPU enclosure—315 kg (694 pounds)
DPU shipping weight—343 kg (756 pounds)

•

VT420 video terminal weight including keyboard—9.9 kg (21.7 pounds)
Warning
Due to the weight of the equipment, Digital recommends that at least two
people move the enclosures from shipping pallets to the final location.

2–2 Site Preparation

2.1 DECmpp 12000/Sx Site Preparation

Figure 2–1 DECmpp 12000 Enclosure Dimensions

61 cm
24.0 in

(Dimensions are
Approximate)

170 cm
66.9 in

86.4 cm
34.0 in
54 cm
22 in
MKV-040000314-24-DG

2.1.2 Electrical Requirements
The DECmpp 12000/Sx system should be installed in a dedicated computer
room. It requires two separate, dedicated power inputs, one for the DECsystem
5900 and one for the DPU. The power source should be adequate to handle the
original system configuration and allow for system expansion. Additional power
equipment may be required to avoid power disturbances.
Table 2–1 lists the electrical requirements for both the DECmpp DPU and the
DECsystem 5900 server.

Site Preparation 2–3

2.1 DECmpp 12000/Sx Site Preparation

Table 2–1 DECmpp 12000/Sx Power Specifications
Item

DPU Power

DECsystem 5900 Power

Nominal line voltage

220 Vac

230 Vac

Voltage range

180 Vac min, 264 Vac max

176 Vac min, 264 Vac max

Nominal frequency

50/60 Hz

Frequency range

47 Hz to 63 Hz

Power source phase

Single

Maximum steady state
current at nominal
voltage

30 A

12 A

Startup current (20
seconds)

16 A

Maximum inrush
current

200 A

Maximum power
consumption

5000 W

1630 W

Typical power

2000 W plus I/O

1630 W

2–4 Site Preparation

2.1 DECmpp 12000/Sx Site Preparation

2.1.2.1 Cables
Power cables, 3 m (9 feet) long, are shipped attached to each DECsystem 5900
and DECmpp DPU enclosure. Each cable is terminated with a 30 A, 250 V twist
lock connecting plug. Table 2–2 lists alternate power cables required by local
country codes.
Table 2–2 Alternate Cables
Country

Cable Number

Australia

BN18D-4E
17-00198-05

Central Europe

BN18C-4E
17-00199-10

Denmark

BN18P-4E
17-01255-01

Europe

BN18P-4E
17-01255-01

India

BN18H-4E
17-00456-06

Ireland

BN18P-4E
17-01255-01

Israel

BN18F-4E
17-00457-06

Italy

BN18E-4E
17-00364-06

Japan

BN18R-4E
17-01256-01

South Africa

BN18H-4E
17-00456-06

Switzerland

BN18P-4E
17-01255-01

United Kingdom

BN18P-4E
17-01255-01

United States

BN18R-4E
17-01256-01

Site Preparation 2–5

2.1 DECmpp 12000/Sx Site Preparation

2.1.3 Environmental Considerations
Computer systems, especially their storage devices, are adversely affected
by particulate matter. The area must be free from dirt, dust and other
environmental hazards.
2.1.3.1 Cooling
Heat dissipation is measured in British Thermal Units (Btu). Maximum heat
dissipation for the DECmpp 12000/Sx system is:
•

DECsystem 5900 enclosure—5,325 Btu/h.

•

DPU enclosure—17,100 Btu/h.

Cooling air flow for each H9A00 series cabinet is as follows:
•

DECsystem 5900—Cool air enters through louvers in the front door, runs
horizontally through the equipment and is exhausted out louvers in the rear
door.

•

DECmpp 12000/Sx DPU—Cool air enters through top louvers in the front
door, runs vertically through the equipment and is exhausted out bottom
louvers in the front and rear doors.

2.1.3.2 Temperature and Humidity
Table 2–3 lists temperature and relative humidity values for the
DECmpp 12000/Sx system.
Table 2–3 DECmpp 12000/Sx Temperature/Humidity Specifications
Parameter
Temperature

Operating—DPU

Operating—DECsystem
5900

Non-operating

10°C to 32°C
50°F to 90°F

0°C to 32°C
32°F to 90°F

–40°C to 66°C
–40°F to 151°F

11°C per hour max
20°F per hour max

N/A

20% to 80%
(noncondensing)

10% to 95%

3000 m
10,000 ft

15,000 m
50,000 ft

Temperature rate of
change
Relative humidity

20% to 80%
(noncondensing)

Maximum Wet Bulb
Temperature

28°C
82°F

Minimum Dew Point
Temperature

2°C
36°F

Maximum Altitude

2400 m (8000 ft) at 36°C
96°F

For operation above sea level, decrease the operation temperature by 1.8°C per 1000 m (or 1°F per 1000 ft).

2–6 Site Preparation

2.1 DECmpp 12000/Sx Site Preparation

2.1.3.3 Static Electricity
Static electricity can cause system failure and loss of data. To minimize static
buildup, follow these guidelines:
•

Maintain relative humidity of at least 20%.

•

Provide a separately fed electrical circuit for each enclosure ordered.

•

Provide as many electrical outlets as required for each additional device,
including the console video monitor and any other tabletop or network
devices.

2.1.4 Additional Equipment
Make sure that there is enough space for terminals, monitors, and other
peripheral equipment. When you plan cable routing, consider factors such
as safety, convenience, future expansion, and cost. Cables for periperals and
networks should be in place and labeled before you install the system.
2.1.4.1 Modem
DECmpp 12000/Sx systems shipped inside the United States have a built-in
modem. To support the modem connection, you need a 2500-style (normal analog)
telephone circuit and an X11 telephone cable.
2.1.4.2 Ethernet
The DECsystem 5900 requires a standard thick wire Ethernet connection.

Site Preparation 2–7

2.2 DECmpp 12000–LC/Sx Site Preparation

2.2 DECmpp 12000–LC/Sx Site Preparation
The following sections provide information about site preparation for the
DECmpp 12000–LC/Sx system, including the DECstation 5000/240 front-end
workstation.

2.2.1 Physical Characteristics
Figure 2–2 shows the dimensions of the DPU enclosure in the
DECmpp 12000–LC/Sx configuration.
2.2.1.1 Size and Service Clearance
Space requirements include sufficient area to contain all of the equipment, and
to provide service clearance. Leave at least 92mm (36 inches) of clearance in
the front and rear of the DPU enclosure for access and to provide adequate
ventillation. No space is required on the sides of the enclosure, though there
must be some way to access the rear of the enclosure on a regular basis.
Space for the DECstation 5000/240 should be sufficient to contain all of the
equipment, including the CPU box, expansion box, monitor, keyboard, and mouse.
Dimensions for each of the workstation parts are as follows:
•

DECmpp 12000-LC DPU enclosure
107 cm high, 47 cm wide, 82.5 cm deep (42 inches high, 18.5 inches wide, 32.5
inches deep)
The front door swings out with a 36 cm (14 inch) radius.

•

DECstation 5000/240 CPU or Expansion Box Dimensions
9.19 cm high, 50.95 cm wide, 43.48 cm deep (3.62 inches high, 20.06 inches
wide, 17.12 inches deep)

•

VRT19 Video Monitor
48.3 cm high, 48.3 cm wide, 50.8 cm deep (19.0 inches high, 19.0 inches wide,
20.0 inches deep)
Keyboard—53.3 cm wide, 17.2 cm deep (21 inches wide, 6.75 inches deep)

There must also be ample room for the power cables and data cables, including
the cable that connects the DECstation to the DECmpp 12000–LC enclosure.
These should be out of the way, where they will not be stepped on, tripped over,
or otherwise disturbed.
2.2.1.2 Weight
The maximum weight for DECmpp 12000–LC/Sx Series enclosures is:
•

DPU enclosure—182 kg (400 pounds)

•

DECstation 5000/240 CPU box—12.7 kg (28 pounds)

•

DECstation 5000 expansion box—21.8 kg (46 pounds)

•

VRT19 video monitor weight—32.7 kg (72 pounds)

2–8 Site Preparation

2.2 DECmpp 12000–LC/Sx Site Preparation

Figure 2–2 DECmpp 12000-LC/Sx DPU Enclosure Dimensions

47 cm
18.5 in

Dimensions are
Approximate

107 cm
42 in

82.5 cm
32.5 in
36 cm
14 in
MKV-040000314-25-DG

2.2.2 Electrical Requirements
The DECmpp 12000–LC/Sx system requires two separate, dedicated power
inputs, one for the DECstation and one for the DPU. The power source should
be adequate to handle the original system configuration and allow for system
expansion. Additional power equipment may be required to avoid power
disturbances.
Table 2–4 lists the electrical requirements for both the DECmpp 12000-LC DPU
and the DECstation 5000/240 workstation.

Site Preparation 2–9

2.2 DECmpp 12000–LC/Sx Site Preparation

Table 2–4 DECmpp 12000-LC/Sx Power Specifications
Item

DPU Power

DECstation 5000/240 Power

Nominal line voltage

110 Vac/220 Vac

Voltage range

90 Vac min, 132 Vac max
180 Vac min, 264 Vac max

88 Vac min, 132 Vac max
176 Vac min, 264 Vac max

Nominal frequency

50/60 Hz

110 Vac—60 Hz
220 Vac—50/60 Hz

Maximum steady state
current at nominal
voltage

110 Vac—15 A
220 Vac—10 A

110 Vac—9.5 A
220 Vac—5.3 A

Maximum power
consumption

1000 W

1630 W including I/O

Typical power

500 W plus I/O

1630 W including I/O

2.2.2.1 Cables
A 3 m (10 ft) long power cable is shipped attached to the DPU enclosure. For 110
Vac systems, the cable is terminated with a NEMA 5-15P connecting plug. For
220 Vac systems, the cable is terminated with a NEMA 6-15P connecting plug.

2.2.3 Environmental Considerations
Computer systems, especially their storage devices, are adversely affected
by particulate matter. The area must be free from dirt, dust and other
environmental hazards.
2.2.3.1 Cooling
The DECmpp 12000–LC/Sx system does not require a special room; it operates
in an air-conditioned office environment. However, the parallel disk array
(PDA) option requires a Class A computer room environment. Therefore, if a
configuration includes the PDA, both enclosures should be kept in the computer
room.
Heat dissipation is measured in British Thermal Units (Btu). Maximum heat
dissipation for the DECmpp 12000–LC/Sx DPU is 4100 Btu/h.

2–10 Site Preparation

2.2 DECmpp 12000–LC/Sx Site Preparation

2.2.3.2 Temperature and Humidity
Table 2–5 lists temperature and relative humidity values for the DECmpp 12000–
LC/Sx system.
Table 2–5 DECmpp 12000-LC/Sx Temperature/Humidity Specifications
Parameter
1

Temperature

Operating—DPU

Operating—DECstation
5000/240

10°C to 38°C
50°F to 104°F

0°C to 40°C
32°F to 104°F

Temperature rate of
change

N/A

Relative humidity

20% to 80%
(noncondensing)

Maximum Wet Bulb
Temperature

28°C
82°F

Minimum Dew Point
Temperature

2°C
36°F

Maximum Altitude

2400 m (8000 ft) at 36°C
96°F

Non-operating

15,000 m
50,000 ft

For operation above sea level, decrease the operation temperature by 1.8°C per 1000 m (or 1°F per 1000 ft)

2.2.3.3 Static Electricity
Static electricity can cause system failure and loss of data. To minimize static
buildup, follow these guidelines:
•

Maintain relative humidity of at least 20%.

•

Provide a separately fed electrical circuit for each enclosure ordered.

•

Provide as many electrical outlets as required for each additional device,
including the expansion box, console video monitor, and any other tabletop or
network devices.

2.2.4 Additional Equipment
Make sure that there is enough space for terminals, monitors and other
peripheral equipment. When you plan cable routing, consider factors such
as safety, convenience, future expansion, and cost. Cables for periperals and
networks should be in place and labeled before you install the system.
2.2.4.1 Modem
DECmpp 12000–LC/Sx systems shipped inside the United States have a built-in
modem. To support the modem connection, you need a 2500-style (normal analog)
telephone circuit and an X11 telephone cable.
2.2.4.2 Ethernet
The DECstation 5000/240 requires a standard thick wire Ethernet connection.

Site Preparation 2–11

2.3 Parallel Disk Array Site Preparation

2.3 Parallel Disk Array Site Preparation
The following sections provide information to help you prepare a site for a
Parallel Disk Array (PDA). It includes specifications and a physical description of
the PDA enclosures.
The DECmpp 12000/Sx Parallel Disk Array (PDA) provides a parallel, multidisk
architecture, consisting of a disk array (DA) controller and a parallel disk array
providing bulk data storage. The disk array comprises 5-1/4 inch ESDI disk
drives, arranged in banks of 4, 8, or 16 data disks, with up to two associated
parity disks and one "hot" standby disk. The disk array is a scaleable I/O device
for bulk data storage. The integral DA controller provides a high-speed data
connection to the disk array. A VME control port allows an external VME
agent to perform additional basic control functions. A diagnostic port allows for
debugging. Front panel indicators provide status for both system power and
individual disk drives.

2.3.1 Physical Characteristics
Physical characteristics include size, service clearance and weight.
2.3.1.1 Size and Service Clearance
The PDA is housed in a separate H9A00 series enclosure which is electrically
connected to the data parallel unit (DPU). The PDA enclosure is identical to the
enclosures that house the DECsystem 5900 server and the DECmpp 12000/Sx
DPU. Refer to Figure 2–1 for the overall dimensions of this enclosure.
As with the DPU enclosure, space requirements include sufficient area to contain
all of the equipment, and to provide service clearance. Leave at least 92 mm
(36 inches) of clearance in the front and rear to access the PDA enclosure and to
provide adequate ventilation. No space is required on the sides of the enclosure,
though there must be some way to access the rear of the enclosure on a regular
basis. There must also be ample room for the power cable, which should be out of
the way, where it will not be stepped on, tripped over, or otherwise disturbed.
2.3.1.2 Weight
The maximum weight for DECmpp PDA enclosure is 378 kg (834 pounds). The
PDA shipping weight is 411 kg (906 pounds).
Warning
Due to the weight of the equipment, Digital recommends that at least two
people move the enclosure from the shipping pallet to the final location.

2–12 Site Preparation

2.3 Parallel Disk Array Site Preparation

2.3.2 Power and Cooling Requirements
The PDA enclosure for all DECmpp 12000/Sx series configurations should be
installed next to the DPU enclosure; both should be in a controlled computer
room environment. The area must be free of dust, and other environmental
hazards.
Cooling air flow for PDA H9A00 series cabinet is such that cool air enters
through top louvers in the front door, runs vertically through the equipment, and
is exhausted out bottom louvers in the front and rear doors.
All DECmpp configurations require that the PDA be tied to a dedicated power
input.
Power requirements for all SMP11-Ax models is as follows:
20A, 220 V/240 V outlet (supports up to 19 disks)
All SMP11-Ax PDA enclosures are shipped with an L6-20P three-prong AC plug.
If you are not certain about your power source, contact a qualified electrician.

2.3.3 Power and Environmental Specifications
Table 2–6 provides the PDA electrical and environmental specifications.
Table 2–6 PDA Specifications
Item

Specification

Line Voltage

220/240 VAC, 20A, 50/60 Hz, single phase

Line Voltage Tolerance
for 220 V

180 V minimum, 264 V maximum

Maximum Power

2500 W

Operating Temperature

10–40°C (50–104°F)

Humidity

20–80% noncondensing

Maximum Wet Bulb
Temperature

28°C (82°F)

Minimum Dew Point
Temperature

2°C (36°F)

Maximum Altitude

2400 m (8000 ft) at 36°C (96°F)

Cooling Requirement

4270 Btu/hour (up to 10 disks), 8540 Btu/hour (more than 10
disks)

Site Preparation 2–13

3
System Hardware Installation
3.1 Installation Overview
As outlined in Chapter 1, all DECmpp 12000/Sx systems consists of a data
parallel unit (DPU), an ULTRIX server functioning as a front-end processor, and
an optional Parallel Disk Array.
The DECmpp 12000/Sx system employs either the DECsystem 5900 server or the
DECstation 5000/240 server. In this configuration, the DPU is contained within
an H9A00 series enclosure. The server may also be housed in a separate H9A00
series enclosure (DECsystem 5900) or a pair of tabletop boxes (DECstation
5000/240).
The DECmpp 12000–LC/Sx DPU employs the DECstation 5000/240 server. In
this configuration, the DPU is contained within a short enclosure and the server
in a pair of tabletop boxes.
Either system configuration can also contain an optional Parallel Disk Array
(PDA). The PDA is housed within a separate H9A00 series enclosure.
This chapter provides instructions for physical installation, cabling, and initial
powerup of the system. Installation procedures for the ULTRIX server are
located in either the DECsystem 5900 Installation Guide, or the DECstation 5000
Hardware Installation Guide, depending on your configuration. Parallel disk
array installation procedures are located in the DECmpp 12000/Sx Parallel Disk
Array Reference Manual. When all installation procedures are completed, the
system can be booted and operated. Appendix A contains a brief installation
checklist, without the details provided here.
Warning
Turning on power before you are instructed to do so can cause personal
injury or damage to equipment.

Remember, if you need assistance during the installation, call:
CUSTOMER SUPPORT CENTER
1-800-354-9000 (U.S. and Canada)
Ask for DECmpp support

System Hardware Installation 3–1

3.2 Unpacking and Inspection

3.2 Unpacking and Inspection
The shipment consists of several packages. The content of the packages depends
largely upon the system configuration and options ordered. The largest boxes
on shipping skids may contain the DECmpp 12000/Sx DPU, DECsystem 5900
and optional PDA. Other smaller boxes may contain the DECstation 5000,
video display, accessories (tapes, cables, keyboard, and manuals) and any items
packaged separately for special protection (for example, printed circuit boards
(PCBs) for the DPU).
If you are installing a DECmpp 12000/Sx system, proceed to Section 3.2.1.
If you are installing a DECmpp 12000–LC/Sx system, proceed to Section 3.2.2.

3.2.1 Unpacking and Positioning the DECmpp 12000/Sx Server
If you are installing a DECmpp 12000/Sx system with a DECsystem 5900 server,
refer to the unpacking instructions in the DECsystem 5900 Installation Guide.
Then position the DECsystem 5900 enclosure as the leftmost enclosure in the
configuration as viewed from the front in Figure 1–1 of this manual. Install the
DECsystem enclosure side panels as part of the enclosure installation procedure.
Do not install the enclosure skirts at this point.
If you are installing a DECmpp 12000/Sx system with a DECstation 5000/240
server, refer to the unpacking instructions in the DECstation 5000 Hardware
Installation Guide. Figure 1–2 of this manual shows a typical installation.
After unpacking the server, proceed to Section 3.2.3.

3.2.2 Unpacking and Positioning the DECmpp 12000–LC/Sx Server
If you are installing a DECmpp 12000–LC/Sx system, it includes a DECstation
5000 server. Instructions for unpacking the DECstation 5000 are in the
DECstation 5000 Hardware Installation Guide.
After unpacking the server, proceed to Section 3.2.4.

3–2 System Hardware Installation

3.2 Unpacking and Inspection

3.2.3 Unpacking and Positioning the DECmpp 12000/Sx DPU
Follow these steps to unpack the DPU:
1. Inspect the container for obvious signs of damage, including dents, scrapes, or
water damage. If you find any sign of damage, note this on the bill of lading.
2. Remove the plastic wrap, the corner pads, and any cardboard packaging.
Note
Leave a minimum of 7 ft clearance in front of the shipping skid.

3. Insert the skid ramps into the holes in the front of the skid with arrows on
skid lined up with arrows on ramp boards.
4. With a 9/16-inch wrench, loosen and remove the shipping bracket bolts
the enclosure feet (Figure 3–1).
5. Remove the shipping brackets
to be reshipped.

and save them for use if the enclosure needs

Figure 3–1 Removing Enclosure Shipping Bracket

MLO-007680

Shipping bracket bolts

Shipping bracket

6. While the enclosure is still on the skid, loosen the 3/4-inch upper (lock) nut on
each foot by turning clockwise (Figure 3–2). Turn the 9/16-inch bottom nut on
each foot counterclockwise to raise the feet for skid clearance.

System Hardware Installation 3–3

3.2 Unpacking and Inspection

Figure 3–2 DECmpp 12000/Sx DPU Enclosure Levelers

2
1

MLO-007745

Warning
The DPU enclosure weighs 315 kg (694 pounds). For safety, two people
are needed to roll the enclosure down the ramps.

7. Roll the enclosure down the ramp boards. The front two wheels are on swivel
casters, the rear two are fixed.
8. Ensure that both enclosure side panels are installed and secure.
9. If you are installing the DPU with a DECsystem 5900 server, position the
DPU enclosure to the right (facing front) of the server enclosure.
If you are installing the DPU with a DECstation 5000/240 server, position the
DPU enclosure in close proximity to the server boxes.
10. Leave 36-inch clearance at the front and rear of the enclosure for service.
Caution
All enclosure side panels must be installed. This is important to
maintain proper cooling air flow and to reduce radiated emissions.

11. Raise the enclosure up on its feet as follows:
a. Loosen the 3/4-inch lock nut (clockwise) on each foot.
b. Lower each foot into position by turning clockwise on the 9/16-inch nut on
the foot.
c.

Tighten each 3/4-inch locknut counterclockwise to lock the feet in place.

12. Ensure that the DPU and DECsystem 5900 enclosures are leveled such that
their side panels butt against each other firmly with no gap. Also, ensure
that the height of all enclosures is identical so that horizontal lines are in
alignment.

3–4 System Hardware Installation

3.2 Unpacking and Inspection

3.2.3.1 Assembling the Enclosure Skirts
Open the DPU enclosure skirt kit, PN H9C00-UA. The DECsystem 5900 has a
similar kit.
The skirts are installed after all enclosures are installed and raised up off their
casters by the leveling feet.
A separate skirt is installed on each side of the enclosure except the sides that
butt up against another enclosure. Each skirt is attached to the enclosure by two
quarter-turn Phillips head captive screws.
Front Skirt
The front skirt, shown in Figure 3–3, has three pieces,
must be fitted together, then attached to the enclosure.

(two each) and

, that

Figure 3–3 Front and Side Skirts

MKV-040000314-32-DG

Front curved pieces, PN 70-29318-01, and PN 7-29318-02

Front center piece, PN 74-41733-01
Right side piece, PN 70-29320-02 (left side piece, PN 70-29320-01)

Side Skirts
One side skirt is shown in Figure 3–3, item . Attach the side skirt(s) to the
side(s) of the enclosure frame that do not butt up against another enclosure.

System Hardware Installation 3–5

3.2 Unpacking and Inspection

Rear Skirt
The center piece of the rear skirt has a rectangular opening through which run all
external power and signal cables. The rear skirt panels are shown in Figure 3–4.
The curved pieces,
and , are attached to the center piece
with plastic
push-in fasteners, and attached to the frame with the push-in captive screws.
The cable cover, PN 74-41660-00, (not shown in Figure 3–4), fits into the notches
on the two side pieces.

Figure 3–4 Rear Skirt

2
3
MKV-040000314-33-DG

PN 70-29318-01

PN 74-41733-01
PN 70-29318-02

After installing the skirts, proceed to Section 3.3.

3–6 System Hardware Installation

3.2 Unpacking and Inspection

3.2.4 Unpacking and Positioning the DECmpp 12000–LC/Sx DPU
Figure 3–5, Figure 3–6, Figure 3–7, and Figure 3–8 show the unpacking
procedure. Follow these steps to unpack the DPU:
Inspect the container for obvious signs of damage, including dents, scrapes, or
water damage. If you find any sign of damage, note this on the bill of lading.
Warning devices on the shipping container show if it was subjected to shock or
tipped over. Another set of indicators is inside the container, on the DPU front
panel. Inspect the outside indicators on receipt of the system. If the outside
indicators are missing, unpack the system immediately, and inspect the inside
set. Note any signs of shock or tipping on the bill of lading.
•

The Shockwatch indicator is a bright yellow and white square with a small,
white vial in the center. If the vial is red instead of white, the container has
been subjected to shock. Usually, this means that the box was dropped.

•

The Tip-n-Tell is an orange square with an inverted "V" in the center. The
bottom half of the "V" contains small blue particles; the top is light brown. If
any of the blue particles are in the top of the "V," the shipping container was
tipped.

If you find any sign of damage, or if any of the indicators show that the package
was shocked or tipped, note this on the bill of lading.
Figure 3–5 shows the bands and the ramp.
Warning
The plastic bands are under tension and can snap or rebound when cut.
Also, the ramp can fall when the bands and securing tape are cut.

System Hardware Installation 3–7

3.2 Unpacking and Inspection

Figure 3–5 Unopened Shipping Container

Box Before Opening

Box, With Bands and Ramp Removed

Fasteners
Fastener Detail
Band

Ramp

Pinch

Pallet

Pinch

MKV-040000314-28-MPS

1. Use scissors or a knife to cut the plastic bands around the box.
2. While holding the ramp in place, cut the tape securing it to the side of the
box.
3. Remove the ramp from the pallet and put it aside.
4. Remove the cardboard box.
Caution
To avoid damage to the DPU, use a knife that does not penetrate more
than 1 inch.

a. Cut the tape along the seams on the top of the box.
b. Locate the seam running down the side of the shipping carton. There are
two fasteners along this seam.
Release these fasteners by squeezing or pinching the two flaps together
until the fastener releases the cardboard. Figure 3–5 shows the fastener
locations.
c.

Once the tape is cut and the fasteners are released, pull the box away
from the DPU.

5. The DPU is now sitting on a pallet with boards around its base. Latches hold
one of these boards in place, as shown in Figure 3–6.

3–8 System Hardware Installation

3.2 Unpacking and Inspection

Open each latch by flipping its key, or handle, up so that it stands straight
out, then turning it 1/4 turn counterclockwise. This releases the board.
Figure 3–6 Removing the Front Board

Latch Detail
Raise the
Key

Then turn
it Counterclockwise
2x6 Board

U-bolt Holes

MKV-040000314-29-MPS

6. Remove this board and place it aside, exposing the two U-bolts inserted in the
pallet.
7. Lay the ramp against this side of the pallet so that the top of the ramp (wide
end) is flush with the surface of the pallet.
8. The two U-bolts in the pallet are used to fasten the ramp to the pallet. Lift
out the U-bolts, and locate the matching holes at each side of the ramp and
the pallet. Lower one U-bolt into each set of holes, straddling the gap between
the ramp and the pallet. This connects the ramp and the pallet. Figure 3–6
shows the U-bolt locations, and Figure 3–7 shows the U-bolts in the ramp.
The U-bolts are not bolted into place; their own weight holds them in.
9. The ramp is now ready. Carefully roll the DPU off the pallet and down the
ramp.

System Hardware Installation 3–9

3.2 Unpacking and Inspection

Figure 3–7 Ramp Ready to Use

U-bolt Holes

Ramp

Pallet
MKV-040000314-30-MPS

10. Gently push the DPU into position. It should be close to the DECstation 5000
CPU box.
11. Set the levelers at each bottom corner of the enclosure. Spin each leveler
down until it sits firmly against the floor, as shown in Figure 3–8.

3–10 System Hardware Installation

3.2 Unpacking and Inspection

Figure 3–8 Setting the Levelers

MKV-040000314-31-MPS

System Hardware Installation 3–11

3.3 Front-End Server Installation

3.3 Front-End Server Installation
You should install the front-end server and verify its operation before beginning
the DPU installation.

3.3.1 Installing the DECsystem 5900
Follow these steps to install the DECsystem 5900:
1. Install the DECsystem as described in detail in the DECsystem 5900
Installation Guide. (You received a copy with the DECsystem.) Installation
involves setting up and cabling the video terminal or monitor, keyboard,
mouse, and network connection, and applying power.
Refer to Figure 3–9 for a view of the DECsystem 5900 Power Controller.
2. Ensure that the Remote/Local switch
3. Turn the circuit breaker

is in the Remote position.

on.

Refer to Figure 3–10 for a front view of the DECsystem 5900 CPU drawer.
4. Turn on the DECsystem with the system power switch
to verify correct
installation. This also initiates the powerup self-test described in the
DECsystem 5900 Installation Guide.
5. Turn off the DECsystem before beginning the DPU installation procedures.
Figure 3–9 DECsystem 5900 Power Controller

2
MKV-040000314-35-DG

Figure 3–10 DECsystem 5900 System Power Switch

MKV-040000314-36-DG

3–12 System Hardware Installation

3.3 Front-End Server Installation

3.3.2 Installing the DECstation 5000
Follow these steps to install the DECstation 5000:
1. Install the DECstation, as described in detail in the DECstation 5000
Hardware Installation Guide. (You received a copy with the DECstation.)
Installation involves setting up and cabling the CPU box, video monitor or
terminal, storage expansion box, optical disk reader, keyboard, mouse and
network connection, and applying power.
2. Turn on the DECstation to verify correct installation. This also initiates the
powerup self-test described in the DECstation 5000 Hardware Installation
Guide.
3. Turn off the DECstation before beginning the DPU installation procedures.

3.4 Data Parallel Unit Installation
Warning
Turning on DPU power before you are instructed to do so can cause injury
or damage equipment.

Installation consists of the following major steps:
1. Installing PCBs
2. Installing interconnecting cables
3. Installing AC power cables
4. Turning on and booting the system

System Hardware Installation 3–13

3.4 Data Parallel Unit Installation

3.4.1 Handling PCBs Correctly
To avoid damage, always handle a PCB correctly:
•

Wear antistatic equipment (wrist or ankle strap) when handling the PCB.

•

Use a static-free surface whenever working on a PCB.

•

Handle the PCB gently by the edges.

•

Never handle a PCB by the component or etched surfaces.

•

Always store PCBs in a static-proof envelope.

Each PCB in the DPU card cage has ejector levers on the top and bottom of the
PCB faceplate, shown in Figure 3–11. Filler panels are used to aid in cooling flow
and do not have ejector levers.
Always use the ejector levers when installing PCBs as follows:
1. To release the PCB, lift up the lower end of the top lever, and press down on
the upper end of the bottom lever, moving the PCB partially out of its slot.
2. To secure the PCB in the card cage slot, press in on both the ends of the top
and bottom levers.
Figure 3–11 PCB Ejector Levers

Ejector Levers

MKV-040000314-37-MPS

3–14 System Hardware Installation

3.4 Data Parallel Unit Installation

3.4.2 Data Parallel Unit PCBs
The DECmpp 12000/Sx DPU is shipped with all PCBs installed.
The DECmpp 12000–LC/Sx DPU is shipped with router PCBs installed, but with
the following packaged separately:
•

ACU PCB

•

Parallel VME 6U Adapter with Front-end VME interface PCB (MVIB)

•

PE array PCB(s)

The sections below provide installation procedures for these PCBs.
Note
If an optional PDA is to be installed, the Parallel VME 6U Adapter PCB
with disk interface controller must be installed independently.

3.4.2.1 Array Control Unit Jumper Settings
Before beginning the installation, verify the factory-installed ACU PCB jumper
settings, as shown in Figure 3–12; the darkened blocks indicate jumpers that are
normally installed.
Table 3–1 shows the function of the ACU jumpers and their factory settings.
Table 3–1 ACU Jumper Settings
Jumper Function

Factory Setting

ACU VMEbus address

0xFCC000000

ACU VMEbus interrupt request level

Level 1

ACU VMEbus interrupt acknowledge
level

Level 1

Independent scan path selection from the
server (for diagnostics only)

Off

Selection of ACU as a VMEbus arbiter

ACU VMEbus arbiter selected

16-bit or 32-bit word selection for ACU
instruction DMA

32-bit

Block or pipelined mode for ACU
instruction DMA

Pipelined

IMem size

1 MB

ACU PCB clock enable/disable

Enabled

3.4.3 Data Parallel Unit Card Cage Access
The ACU, PE array, front end VME interface, and router PCBs are accessed
through the DPU rear door. Figure 3–13 shows the DECmpp 12000/Sx card cage
access. The DECmpp 12000–LC/Sx DPU has similar access.

System Hardware Installation 3–15

3.4 Data Parallel Unit Installation

Figure 3–12 Array Control Unit Jumpers
VMEbus Interrupt Request Level
Serial Scan Path
AB CDE FGHJKL MNPR

AAAA AAAAAAAAAA
AB CD FGHJKLMNPR

VMEbus Interrupt Acknowledge Level
A[23:14] & [12:10]
IMem Size

A[31:26]

Backplane Connectors

Crystal
Oscillator

Clock
Enable

Note: Darkened Jumpers
are INSTALLED.
MKV-040000314-38-MPS

To open the DPU rear door, use the 5/16 inch hex wrench supplied with the
system.
3.4.3.1 Data Parallel Unit Card Cage Slots
The DPU card cage is divided into two dedicated blocks: one for I/O PCBs and
the other for PE array and router PCBs as shown in Figure 3–14.
In the I/O section, the first slot on the left always holds the ACU PCB. The second
I/O slot is configured to support the Front-end VME interface (MVIB). The other
slots are for I/O or VMEbus PCBs mounted on a Parallel VME 6U Adapter PCB.
The PE array PCBs must be in contiguous slots, starting with the first PE array
slot on the left. If the number of PE array PCBs changes, the system must be
rejumpered, as described in the DECmpp 12000/Sx Hardware Service Manual,
"Upgrading Processor Element Arrays" chapter.
Note
All PE array PCB slots that do not contain a PE array PCB must contain
a router PCB. The DECmpp 12000/Sx and DECmpp 12000–LC/Sx systems
will not work if any PE array slot is empty.

3–16 System Hardware Installation

3.4 Data Parallel Unit Installation

Figure 3–13 DECmpp 12000/Sx System and Card Cage (Rear View)

Card Cage

Fan Tray

Power Supply

MKV−040000314−59−RAGS

System Hardware Installation 3–17

3.4 Data Parallel Unit Installation

Figure 3–14 Data Parallel Unit Card Cage Slots

Array
Control
Unit

A I I I I I I I I I I I I I II I I
C O O O O O O O O O O O
O O O O
O O O
U 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
M
V
I
B

Input/Output
Slots

P
V
M
E

P P P P P P P P P P P P P P P P
E E E E E E E E E E E E E E E E
1 2 3 4 5 6 7 8 9 1 1 1 1 1 1 1
0 1 2 3 4 5 6

Modem
(USA Only)

PE Array Slots

DECmpp 12000
Card Cage (Rear View)

A I I I I I I P P P P
C O O O O O O E E E E
U 0 0 0 0 0 0 1 2 3 4
0 1 2 3 4 5
M

Modem
(USA Only)

V
I
B

P *
V
M
E

I/O Slots PE Array Slots
DECmpp 12000−LC
Card Cage (Rear View)
* Slot IO04 Reserved for Optional PDA Interface
MKV−040000314−03−RAGS

3–18 System Hardware Installation

3.4 Data Parallel Unit Installation

3.4.3.2 Installing the PCBs
Follow these steps to install the DPU PCBs:
Caution
Observe anti-static precautions. ICs may be damaged if anti-static straps
are not worn.

1. Open the DPU rear door.
2. Strap on the anti-static device (wrist or ankle strap).
3. Remove the upper and lower PCB retainer bars (horizontal bars across PCB
face plates). The DECmpp 12000–LC/Sx DPU has only one bar.
4. Before installing the ACU PCB:
a. Verify the jumper configuration on the ACU PCB, discussed in
Section 3.4.2.1.
b. Make sure the ACU crystal oscillator is firmly seated on the PCB as
shown in Figure 3–12.
5. The ACU PCB goes in the leftmost slot in the DPU card cage. The Front-end
VME interface PCB (MVIB) goes into slot IO00 (the slot next to the ACU
PCB). This assembly is actually two PCBs, the T6000 VMEbus controller
PCB mounted on a Parallel VME 6U Adapter PCB. All PE array PCBs are
installed from left to right. The balance of the PE array slots (not filled with
PE array PCBs) must be occupied by router PCBs.
Caution
Although you might have to push firmly to seat a PCB, avoid forcing
PCBs when installing them.

6. Replace the upper and lower PCB retainer bars.

3.4.4 Data Parallel Unit Backplane Jumpers
Jumpers are installed on the DPU backplane for both the I/O and the PE array
slots. As MPVMEbus I/O devices are added and removed, corresponding jumpers
above each I/O slot must be added and removed. The X-Net jumpers are factoryset for your PE array configuration as shipped. When upgrading to a larger PE
array configuration, refer to the DECmpp 12000/Sx Hardware Service Manual
for upgrade procedures and locations of the PE array X-Net jumpers.
Refer to Figure 3–15 and Figure 3–16. Each I/O slot, IO01 through IO14, has a
set of pins above it which allow certain MPVMEbus signals to be jumpered past
those slots that are not occupied by PCBs. Going from right to left, ensure that
the set of three jumpers have been removed from above all IO01 through IO14
slots that are occupied by MPVMEbus PCBs.
Conversely, ensure that jumpers are installed above all unoccupied I/O slots up
to, but not including, the slot containing the last I/O PCB. Slots after (to the left
of) the last occupied I/O slot may or may not have the jumpers installed. It is of
no consequence.

System Hardware Installation 3–19

3.4 Data Parallel Unit Installation

Figure 3–15 Data Parallel Unit Backplane Jumper Locations

Remove three backplane jumpers
above all occupied IO01 through
IO14 slots
E
C
P03

IOnn

IO01
Through
IO14
VME Jumpers
ACU PCB

Front−End
VME Interface PCB
(MVIB)
PVME PCB

First PE Array
PCB

Xnet Jumpers
MKV−040000314−04−RAGS

3–20 System Hardware Installation

3.4 Data Parallel Unit Installation

Referring to Figure 3–16, ensure that backplane jumpers are installed above the
ACU and IO00 (MVIB) slots as shown.
Refer to the DECmpp 12000/Sx Hardware Service Manual, Section 7.1.3, for a
complete listing of all DPU backplane jumpers, including Xnet jumpers.
Figure 3–16 ACU/MPVMEbus Backplane Jumpers

Any Occupied
I/O Slot

Front−End
VME Interface
Slot

Any Unoccupied
I/O Slot

P03

IO 02

P03

IO 01

F E D C B A

P02

ACU Slot
B

IO 00

F E D C B A

ACU

F E D C B A

MKV−040000314−21−RAGS

System Hardware Installation 3–21

3.4 Data Parallel Unit Installation

3.4.5 Connecting the Data Parallel Unit and DECstation Cables
This section provides procedures for connecting the DPU and server cables.
Figure 3–17 provides a simplified diagram of the DPU-server cabling.
Caution
Inspect all cable connectors to make sure all the pins are straight. If any
pin is bent, do not try to install the cable; procure a replacement cable.

Figure 3–17 DPU-Server Cables

Phone
Line

DECsystem 5900
Internal Phone Cable

Modem
PCB
29-29373-01

Internal RS232 Cable
29-29566-01

External RS232 Cable
29-29564-01

External VME
Data Cable
29-29563-01

DECstation 5000/240

Internal VME
Data Cable
29-29565-01

Front-End
VME
Interface
PCB
(MVIB)

2T-T6000-AA

DPU

Internal Cables Used on -LC Configuration Only
External VME Data Cable

External RS232 Cable
MKV-040000314-40-DG

3–22 System Hardware Installation

3.4 Data Parallel Unit Installation

3.4.5.1 Connecting the Internal DPU Cables (DECmpp 12000–LC only)
After installing the DPU PCBs, follow these steps to connect the internal DPU
cables. This procedure applies to the DECmpp 12000–LC only. The DECmpp
12000 configuration (H9A00 series cabinet) does not use these internal cables.
1. Connect the 100-pin AMP connector (labeled J3) of the 4-foot internal data
cable (PN 17-03007-01) to the 100-pin connector on the Front-end VME
interface PCB (MVIB). This is the T6000 PCB mounted on a Parallel VME
6U Adapter PCB located in DPU backplane, slot IO00.
2. Connect the AMP connector at the cable’s opposite end (labeled JB) to the
DPU bulkhead interface PCB connector labeled P0B. This connector is located
behind the rear cable panel.
3. Connect one end of the 2-foot internal telephone cable to the modem
connection in the DPU.
4. Connect the other end of the internal telephone cable to the DPU interface
PCB behind the rear cable panel.
3.4.5.2 Connecting the External DPU Cables
Two cables connect the DPU and the server.
1. Connect the external data cable.
DECmpp 12000/Sx configuration
Connect the 100-pin AMP connector (labeled A1) of the 15-foot external data
cable to the 100-pin connector on the Front-end VME interface PCB (MVIB).
This is the T6000 PCB mounted on a Parallel VME 6U Adapter PCB located
in DPU backplane slot I/O00.
DECmpp 12000–LC/Sx configuration
Connect the 100-pin AMP connector (labeled A1) of the 15-foot external data
cable to the other end of the 100-pin connector on the DPU bulkhead interface
PCB.
2. Connect the 100-pin AMP connector (labeled P1) of the external data cable to
the 100-pin connector on the back of the server.
For the DECsystem 5900, this is connector

in Figure 3–18.

For the DECstation 5000, this is connector

in Figure 3–19.

3. Connect the external RS-232 cable.
DECmpp 12000 configuration
Connect one end of the 15-foot external RS-232 cable to the 25-pin connector
on the modem cable plate in the DPU card cage.
DECmpp 12000–LC configuration
Connect one end of the 15-foot external RS-232 cable to the 25-pin connector
on the DPU bulkhead interface PCB.
4. Connect the other end of the external RS-232 cable to the 25-pin connector on
the back of the server.
For the DECsystem 5900, this is connector

in Figure 3–18.

For the DECstation 5000, this is connector

in Figure 3–19.

System Hardware Installation 3–23

3.4 Data Parallel Unit Installation

Figure 3–18 DECsystem 5900 CPU Rear Panel Connectors

MKV-040000314-41-DG

Figure 3–19 DECstation 5000 Rear Panel Connectors

4
MKV-040000314-42-DG

3.4.6 Preparing the System Modem
An X11 telephone jack on the DPU cable panel connects a 2500-style (normal
analog) telephone circuit to the modem inside the DPU. This modem is used to
access the DECmpp 12000 system when providing customer support remotely.
Systems shipped inside the United States are equipped with internal modems. In
DECmpp 12000–LC systems the modem cables are already installed, going from
the interface panel to the modem.
Systems shipped outside the United States are equipped with connections for
external modems. Modems can be purchased locally and installed by Digital
personnel.
The modem requires software configuration in order to work correctly.
Instructions are provided in the DECmpp 12000/Sx System Administration
Guide.

3–24 System Hardware Installation

3.4 Data Parallel Unit Installation

3.4.7 Connecting the DPU Power Cable

Warning
Turning on power before you are instructed to do so can cause personal
injury or damage to equipment.

Caution
The DPU and the server each require dedicated power circuits. They
cannot share a power circuit with any other device, including each other.
For DECmpp 12000/Sx system configurations:
The DECmpp 12000/Sx DPU requires a dedicated 30 A, 220 Vac single phase
circuit. In the United States, use a 30 A, 250 V connector such as Hubble #231A.
The DECsystem 5900 server requires a dedicated 20 A, 220 Vac single phase
circuit. In the United States, use a 310 A, 250 V connector such as Hubble
#231A.
The DECstation 5000 requires either a dedicated 15 A, 110 V circuit, or a
dedicated 10 A, 220 V single phase circuit, depending on destination country.
DECmpp 12000/Sx systems shipped in the United States are equipped with a
dedicated 30 A, 250 V connector. DECmpp 12000 systems shipped outside the
United States are equipped with the same connector, however, depending on local
codes, you can choose to do one of the following:
•

Connect the DPU power cable to a local adapter.

•

Replace the DPU power cable and connector with a local power cable and
connector with a power handling rating equal to, or greater than, the original.

Appendix B provides the instructions for replacing the power cable for the
DECmpp 12000/Sx DPU. The DECmpp 12000–LC system does not normally
require this procedure.
Warning
To avoid personal injury or damage to the equipment, read the
instructions in Appendix B carefully. Have all connections inspected
by a qualified electrician who is familiar with local codes.
For DECmpp 12000–LC/Sx system configurations:
The DECmpp 12000–LC/Sx DPU requires either a dedicated 15 A, 110 V circuit
or a dedicated 10 A, 220 V single phase circuit, depending on destination country.
The DECstation 5000 requires either a dedicated 15 A, 110 V circuit, or a
dedicated 10 A, 220 V single phase circuit, depending on destination country.

System Hardware Installation 3–25

3.4 Data Parallel Unit Installation

110 Vac DECmpp 12000–LC/Sx systems are equipped with a standard NEMA
L5-15 connector attached to the power cable. 220 Vac DECmpp 12000–LC/Sx
systems are equipped with a standard NEMA L6-20P connector attached to the
power cable.
Connect one end of the cable to the DECmpp 12000–LC and the other to the
power source. The proper power source is one of the following, depending on
country of destination:
•

A dedicated 110 Vac, 15A circuit

•

A dedicated 220 Vac, 10A single phase circuit

3.5 DPU Controls and Indicators
The DPU has several controls, at both the front and rear of the enclosure. The
following sections describe the DPU controls and the various status indicators.
Figure 3–20 shows the front controls. Figure 3–21 shows the rear controls.

3.5.1 Front Controls and Indicator
To access the front controls in the DECmpp 12000 configuration, open the front
door. The front controls are located inside, near the top of the enclosure.
To access the front controls in the DECmpp 12000–LC configuration, open the
front door. The front controls are located at the top outer surface of the inner
front door.
Figure 3–20 Data Parallel Unit Front Controls

DISCONNECT
CONNECT

OFF
ON
DIAGNOSTIC

RESET

MODEM

POWER
MKV−040000314−43−RAGS

•

POWER keyswitch—The POWER keyswitch has three settings:
OFF (straight up) turns DPU power off.
ON (middle position) turns DPU power on when the power selector switch
is set to LOCAL.
DIAGNOSTIC (lower position) is similar to ON, but also enables the
VMEbus RESET button.

•

MODEM switch—The MODEM switch has two settings:
CONNECT enables the internal DPU system modem and allows remote
support access.
DISCONNECT disables the modem.

•

RESET pushbutton—Resets the VMEbus if the keyswitch is set to
DIAGNOSTIC.

3–26 System Hardware Installation

3.5 DPU Controls and Indicators

•

POWER indicator—Located at the top left front of the DPU enclosure,
POWER indicates the condition of the power supply. It is amber during the
power up sequence, and green when the DPU has powered up correctly.
When you first turn on the DPU, this indicator is amber for approximately 3
seconds, then it changes to green. Any other behavior indicates a malfunction.

3.5.2 Rear Controls and Indicators
Rear controls and indicators are accessed from the rear of the DPU enclosure by
opening the rear door (Figure 3–21).
Figure 3–21 Data Parallel Unit Rear Controls and Indicators

Remote Daisy−chain
DPU Interface PCA

Temperature Sensor
Fan Tray

Modem

Power Selector
Switch

P1 P2 P13

P3
Power
LEDs
P10

Backplane
Sense Lines
Lightpipe/
Key Switch

30A Circuit
Breaker

1A Circuit
Breaker
Power Cable
Connection
MKV−040000314−81−RAGS

•

POWER SELECTOR switch—The POWER selector switch is on the power
tray rear panel (inside the DPU enclosure at the lower rear), above the
rectangular extension connecting the power tray to the DPU lower-rear panel.
It is a toggle switch that must be pulled out slightly before it can be moved.
The POWER selector switch has three positions:
LOCAL (middle position): Turns on the DPU independent of the server.
OVERRIDE (straight up): Turns on the DPU, regardless of other
conditions.

System Hardware Installation 3–27

3.5 DPU Controls and Indicators

REMOTE (lower position): Not used.
Warning
OVERRIDE is for factory use only. Do not use this setting. It overrides
critical safety systems.

•

Two circuit breakers are at the rear of the DPU.
The rocker switch next to the power cable is a 30A breaker that is ON when it
is UP. The amber lamp above the rocker switch indicates that there is power
on both sides of the 30A breaker.
The small rocker type breaker controls the current to the circuits controlling
the power sequencer. The breaker trips when it detects loads of more than 1
A and pops out. To reset it, push it back in.

•

The powerup sequencer turns on the –5 V power supply when the DPU is
powered on and verifies its correct operation before turning on the +5 V power
supply. It also checks the +12 and –12 V power supplies.
During this period (approximately 3 seconds), the power indicator is amber.
When the sequencer turns on the +5 V power supply, the power indicator
turns green.
If the power indicator remains amber, the power-up sequencer did not
complete its sequence successfully, indicating there is a problem. You should
contact Digital Services for assistance.

3.6 Powering Up the DPU for the First Time
Caution
When initially installing the DPU, a check of all power supply voltage
levels must be made. This can prevent installation problems.

1. Open the front and back doors of the DPU.
2. Before proceeding, remove each PCB from the backplane in both the upper
and lower card cages. While wearing an anti-static strap, unplug all PCBs
from the backplane one inch and allow them to rest in the card cage.
3. Completely remove and replace all blank filler panels. This insures that they
are seated properly in their tracks. Filler panels are installed in place of
PCBs to aid in proper cooling air flow.
4. Ensure that there are no shorts in the DC voltage supply system. With
an ohmmeter, check the +5V, -5V, +12V, and -12V connections at the DPU
backplane with respect to ground. Figure 3–22 shows the test points. A
zero ohm reading indicates a short and must be investigated before applying
power.

3–28 System Hardware Installation

3.6 Powering Up the DPU for the First Time

Figure 3–22 DPU Backplane Voltage Test Points

DECmpp 12000 Backplane
+5V
IO15

IO15

AGND
-12V
+12V
TERM

-5.2V

GND

-5V

+5V

DECmpp 12000-LC Backplane
IO15

IO15

GND

IO15

AGND
-12V
+12V

-5.2V
+5V

5. Plug the power cable into the source of power.
6. Turn the 30 A circuit breaker ON.
7. Set the power selector switch to LOCAL.
8. Turn power on to the DPU with the keyswitch.
9. Ensure that the front POWER indicator goes from off to yellow, then finally to
green.
10. The data parallel unit (DPU) has four power supply voltage output levels: +5
V, –5.2 V, +12 V, and –12 V. Measure these voltages at the DPU backplane, at
the test points shown in Figure 3–22 with a digital voltmeter.

System Hardware Installation 3–29

3.6 Powering Up the DPU for the First Time

For DECmpp 12000/Sx systems adjust the voltage levels at the points shown
in Figure 3–23.
For DECmpp 12000–LC systems adjust the voltage levels at the points shown
in either Figure 3–24 or Figure 3–25, depending on the power supply used in
the system.

Warning
Physical tolerances are very tight at the power supply. 5 V current levels
are in the 600 A range.
Do not short the power supply leads to ground or to other power
supply leads.
Do not use conductive adjustment tools. Use only insulated tools.
When working around the power supply, do not wear loose
clothing or jewelry, especially watches or rings.
Failure to observe these precautions can cause personal injury or damage
to the equipment.

Figure 3–23 DECmpp 12000 Power Supply Voltage Adjustments

Use an Insulated Tool

Adj

Unused

WHITE

+5V

YELLOW

RED

BLACK

-12V

+12V

+
-

Jumper

+
Adj

+
-5V

Adj

Fan

Caution: Overtightening the 12V wires can break
the posts on the power supply.

BLACK

Adj

BLACK

RED

MKV-040000314-58-MPS

3–30 System Hardware Installation

3.6 Powering Up the DPU for the First Time

Figure 3–24 DECmpp 12000-LC/Sx HC Power Supply and Voltage Adjustments

Fan Connector

From System

BLACK

RED

BLUE

V1= +5V
V2= -5V
V3= +12V
V4= -12V

V3 Adj

JUMPER
V4 Adj
_ + _ + _ _ + + _ +
V5

V4 V3S

V3S

V2 Adj
V1 Adj

RED

Power Cable

BLACK
WHITE
115V
230V
ACC
GND

Figure 3–25 DECmpp 12000-LC/Sx Powertec Power Supply and Voltage
Adjustments

Fan Connector

Adj

+12V

+JUMPER +
Adj

BLACK

+
-

RED

WHITE
BLUE

RED

BLACK

-12V

-5V

Adj

+
+5V

Adj

Caution: Overtightening the 12V wires can break
the posts on the power supply.

System Hardware Installation 3–31

3.6 Powering Up the DPU for the First Time

Note
Adjust voltages only if they measure outside the tolerances specified in
the following lists.

•

+5 V Supply
Adjust only if it is outside the range of +4.95 to +5.05 V.
Adjust to exactly 5.0 V.

•

–5.2 V Supply
Adjust only if it is outside the range of –5.25 to –5.15 V.
Adjust to exactly –5.2 V.

•

–12 V Supply
Adjust only if it is outside the range of –12.15 to –11.85 V.
Adjust to exactly –12 V.

•

+12 V Supply
Adjust only if it is outside the range of +12.15 to +11.85 V.
Adjust to exactly +12 V.

11. Turn off power to the DPU.
12. Reinstall and secure all card cage PCBs using the ejector levers, seating them
firmly into the backplane.
13. Turn DPU power on.
14. Remeasure the DC voltages and fine tune them if necessary.
15. Close the front and rear doors.
16. Power on the server.

3–32 System Hardware Installation

3.6 Powering Up the DPU for the First Time

17. Boot the server.
18. At the system prompt, enter boot. For example:
> boot
The system prompts you for a password for root and system accounts.
An example of the startup messages that may appear on the console follows.
This example is an approximation and may not be the precise dialog you
observe. Individual system configurations dictate differences in device
parameters.
----- EVENT INFORMATION ----EVENT CLASS
OS EVENT TYPE
SEQUENCE NUMBER
OPERATING SYSTEM
OCCURRED/LOGGED ON
OCCURRED ON SYSTEM
SYSTEM ID
PROCESSOR TYPE
MESSAGE

300.
0.

x82020230

OPERATIONAL EVENT
SYSTEM STARTUP
ULTRIX 32
Tue Aug 11 08:07:13 1992 EDT
mpdemo.mps.m
HW REV: x30
FW REV: x2
CPU TYPE: R2000A/R3000
KN02/R3000
ULTRIX V4.2A (Rev. 47 MPSG) System #5:
_Tue May 12 13:33:00 EDT 1992
real mem = 92274688
avail mem = 79495168
using 1228 buffers containing 9224192
_bytes of memory
KN02 processor - system rev 48
cpu0 ( version 3.0, implementation 2 )
fpu0 ( version 3.0, implementation 3 )
asc0 at ibus5
rz0 at asc0 slave 0 (RZ56)
rz1 at asc0 slave 1 (RZ57)
rz4 at asc0 slave 4 (RRD42)
tz5 at asc0 slave 5 (TK50)
ln0 at ibus6
ln0: DEC LANCE Ethernet Interface,
_hardware address: 08:00:2b:1d:31:25
dc0 at ibus7
fb0 at ibus0
fb: Module type PMAG-BA 1024X864
vba0 at slot 2 (3VIA/MVIB)
ms0 at vba0 csr 0xfc800000 vmea32d32
_vec 0xbe priority 1
da0 at ms0 slave 0
(DK515-78 - 4 data drives)
acu0 at vba0 csr 0xfcc00000 vmea32d32
_vec 0xd0 priority 1
iqprobe at be889000
iq0 at vba0 csr 0xdc000000 vmea32d32
_vec 0xc0 priority 1

19. Begin your system administration procedures, as described in DECmpp 12000
/Sx System Administration Guide.
After your system administration procedures are done, the system is ready for
use. You should also read the DECmpp 12000/Sx System Overview Manual to
become more familiar with the DECmpp 12000/Sx system.

System Hardware Installation 3–33

3.6 Powering Up the DPU for the First Time

Caution
To avoid damage to the system, always power up or power down the
system in the correct sequence.

3.6.1 Powerup Sequence Summary
1. Turn on the DPU by setting the keyswitch to ON.
2. Turn on the Parallel Disk Array (PDA) if present in your configuration.
3. Turn on the server.
4. Boot the server.
After the system boots, it is ready to operate.
Note
If you boot the server before you power up the DPU, you cannot access
the DPU. Any time you reconnect or repower the DPU, you must reboot
the server.

3.6.2 Powerdown Sequence Summary
1. Halt the server by performing an orderly ULTRIX shutdown procedure.
2. Turn off the PDA, if present in your configuration.
3. Turn off the DPU by setting the keyswitch to OFF.
4. Turn off the server.

3–34 System Hardware Installation

A
Installation Checklist
This appendix provides a checklist of the basic installation steps. For more
detailed instructions, see Chapter 3.

A.1 Installation Steps
Follow these basic steps to install any of the DECmpp 12000/Sx Series systems.
1. Make sure your site meets the requirements listed in Chapter 2.
2. Install the server, as described in the server’s unique documentation
(Section 3.2.1, Section 3.2.2, and Section 3.3).
3. Run the server’s power-up self test.
4. Install the DPU:
a. Make sure the server is powered down (Section 3.3).
b. Make sure the DPU keyswitch is OFF and the rear panel circuit breaker
is OFF (down) (Section 3.5).
c.

Install all DPU PCBs (Section 3.4.3.2).

d. Verify the DPU backplane I/O jumpers (Section 3.4.4).
e.

Connect the VMEbus cable to the DPU cable connector panel
(Section 3.4.5.2).

Connect the VMEbus cable to the server rear panel (Section 3.4.5.2).

g. Connect the RS-232 cable to the DPU cable connector panel
(Section 3.4.5.2).
h. Connect the RS-232 cable to the DECstation rear panel (Section 3.4.5.2).
i.

Connect the external telephone cable to DPU X11 jack (Section 3.4.6).

5. Make sure the DPU power selector switch (inner rear panel) is set to LOCAL
(Section 3.5.2).
6. Connect the DPU power cable (Section 3.4.7).
7. Power up the DPU (Section 3.6).
a. Turn the rear circuit breaker ON (Section 3.5.2).
b. Turn the keyswitch ON (Section 3.5.1).
8. Power up the server (Section 3.3).
9. Boot the server (Section 3.6, Step 17).
You can now proceed with system administration.

Installation Checklist A–1

B
Power Cable Wiring and Replacement
Appendix B describes the procedure for replacing the DECmpp 12000/Sx power
cable.

B.1 Power Cable Wires
DECmpp 12000/Sx systems shipped outside of the United States are equipped
with a power cable terminated with a NEMA L6-30P connector. To conform to
local wiring standards, you may need to do one of the following:
•

Connect the DPU power cable to a local adapter.

•

Replace the power plug with one that conforms to local codes.

•

Replace the DPU power cable and connector with a local power cable and
connector with a power handling rating equal to, or greater than, the original.

Table 2–2 lists alternate power cables and connecting plugs required by local
country codes.
Warning
To avoid injury and damage to equipment, make sure all equipment
is unplugged before working on any power cable. Also, make sure all
changes are inspected by a qualified electrician familiar with local codes.

B.1.1 Wire Ends
When connecting the power cable wire ends to a plug, always connect green to
ground, white to neutral, and black to hot (live).

B.1.2 Replacing the Power Cable
If necessary, the system power cable can be replaced to conform to local codes.
Refer to the following procedure.
Warning
To avoid injury and damage to the equipment, never work on the cable
wiring while any part of the system is connected to power.

1. Make sure the server, the DPU, and the optional disk array are all powered
off.
2. Set the DPU rear panel circuit breaker OFF.
3. Remove the AC plug from the source of power.

Power Cable Wiring and Replacement B–1

B.1 Power Cable Wires

4. Remove the old cable as follows:
a. Remove six screws (four in front and two in rear) that secure the power
tray to the frame and lower air plenum.
b. Slide the power tray toward the front of the DPU just enough to give
yourself enough room to work on the power input box. Do not strain any
of the DC power or sense cables.
c.

Remove the screws that secure the power input box to the rear of the
power supply.

d. Remove the power cable leads from the ground stud and the terminal
block. Loosen the screws that are recessed into the top of the terminal
block; this loosens the power leads. Remove the leads from the terminal
block but do not retighten the screws yet.
e.

Loosen the strain relief fitting by turning the locking nut clockwise.

When the strain relief fitting is loose, feed the cable through the hole and
out of the power input box.

5. Feed the new cable in through the strain relief fitting.
6. Connect the power cable ground lead to the ground stud.
7. Connect the hot (live) power cable leads to the connectors of the terminal
block you just removed the old wires from as follows.
a. Feed the power cable leads into the holes in the right side of the terminal
block.
b. You are connecting to a 220 Vac circuit with hot and neutral leads.
Connect HOT to the side of the terminal block with the RED
corresponding wire on the opposite side. Connect NEUTRAL to the
side of the terminal block with the BLACK corresponding wire on the
opposite side. Do not deviate from these connection instructions.
c.

Tighten the screws on top of the terminal block until the power cable
leads are fastened securely.
Note

Before you tighten the strain relief fitting, feed a little extra cable into the
power input box so there is no strain on the terminal block connections.

8. Tighten the strain relief fitting by turning the lock nut.
9. Reattach the power input box to the power tray.
10. Slide the power tray back into place and secure it with the six screws removed
earlier.

B–2 Power Cable Wiring and Replacement

C
DECmpp Variations and Options
The tables in this appendix provide a list of the part numbers for all DECmpp
12000/Sx/Sx Series system configurations and options associated with the DPU.
Refer to a corresponding appendix in the DECmpp 12000/Sx Parallel Disk Array
Reference Manual for disk array options.
•

Table C–1 lists all DECmpp 12000/Sx Series Systems and their internal DPU
option numbers.

•

Table C–2 lists all DECmpp 12000–LC/Sx Series Systems and their internal
DPU option numbers.

•

Table C–3 lists the DECmpp Processor Element Array Option numbers.

•

Table C–4 lists all DECmpp VMEbus interface options.

Table C–1 DECmpp 12000/Sx Systems
Part Number

Description

DECmpp 12000/Sx Systems with DECstation 5000/240 Server1
MP101-BA

DECmpp Massively Parallel Processor System (Model 1A, 1K PEs,
16MB RAM), PM381-AK, SZ12J-FA, RZ58, RRD42, 120V

MP101-BB

DECmpp Massively Parallel Processor System (Model 1A, 1K PEs,
16MB RAM), PM381-AL, SZ12J-FA, RZ58, RRD42, 240V

MP101-BC2

DECmpp Massively Parallel Processor System (Model 1A, 1K
PEs, 16MB RAM), PM381-AM, SZ12J-FA, RZ58, RRD42, Southern
Hemisphere 240V

MP102-BA

DECmpp Massively Parallel Processor System (Model 1B, 1K PEs,
64MB RAM), PM381-AK, SZ12J-FA, RZ58, RRD42, 120V

MP102-BB

DECmpp Massively Parallel Processor System (Model 1B, 1K PEs,
64MB RAM), PM381-AL, SZ12J-FA, RZ58, RRD42, 240V

MP102-BC2

DECmpp Massively Parallel Processor System (Model 1B, 1K
PEs, 64MB RAM), PM381-AM, SZ12J-FA, RZ58, RRD42, Southern
Hemisphere 240V

DECmpp 12000/Sx Systems with DECsystem 5900 Server
MP101-CB

DECmpp Massively Parallel Processor System (Model 1A, 1K PEs,
16MB RAM), DU-59BT1-M3, RZ58, RRD42, 240V

MP102-CB

DECmpp Massively Parallel Processor System (Model 1B, 1K PEs,
64MB RAM), DU-59BT1-M3, RZ58, RRD42, 240V

The data parallel unit in all the models requires 220V 50/60 HZ power source. The voltages indicated
in the above descriptions are for the ULTRIX server only.
2

MP10X-AC models include monitors for use in the Southern Hemisphere.

(continued on next page)

DECmpp Variations and Options C–1

Table C–1 (Cont.) DECmpp 12000/Sx Systems
Part Number

Description

DECmpp 12000/Sx Systems with DECsystem 5900 Server
MP103-CB

DECmpp Massively Parallel Processor System (Model 4A, 4K PEs,
64MB RAM), DU-59BT1-M3, RZ58, RRD42, 240V

MP104-CB

DECmpp Massively Parallel Processor System (Model 4B, 4K PEs,
256MB RAM), DU-59BT1-M3, RZ58, RRD42, 240V

MP105-CB

DECmpp Massively Parallel Processor System (Model 8A, 8K PEs,
128MB RAM), DU-59BT1-M3, RZ58, RRD42, 240V

MP106-CB

DECmpp Massively Parallel Processor System (Model 8B, 8K PEs,
512MB RAM), DU-59BT1-M3, RZ58, RRD42, 240V

MP107-CB

DECmpp Massively Parallel Processor System (Model 16A, 16K PEs,
256MB RAM), DU-59BT1-M3, RZ58, RRD42, 240V

MP108-CB

DECmpp Massively Parallel Processor System (Model 16B, 16K PEs,
1GB RAM), DU-59BT1-M3, RZ58, RRD42, 240V

Internal DPU Components3
MPD11-AA

DECmpp 1K Processor Element Data Parallel Unit w/16MB ECC RAM
used on MP101-Cx, MP103-Cx, MP105-Cx, MP107-Cx

MPD12-AA

DECmpp 1K Processor Element Data Parallel Unit w/64MB ECC RAM
used on MP102-Cx, MP104-Cx, MP106-Cx, MP108-Cx

Internal DPU subassemblies are not field orderable.

C–2 DECmpp Variations and Options

Table C–2 DECmpp 12000-LC/Sx Series Systems
Part Number

Description

MP001-BA

DECmpp Massively Parallel Processor System (Model 1A, 1K PEs,
16MB RAM), PM381-AK, SZ12J-FA, RZ58, RRD42, 120V

MP001-BB

DECmpp Massively Parallel Processor System (Model 1A, 1K PEs,
16MB RAM), PM381-AL, SZ12J-FA, RZ58, RRD42, 240V

MP001-BC

DECmpp Massively Parallel Processor System (Model 1A, 1K
PEs, 16MB RAM), PM381-AM, SZ12J-FA, RZ58, RRD42, Southern
Hemisphere, 220V1

MP002-BA

DECmpp Massively Parallel Processor System (Model 1B, 1K PEs,
64MB RAM), PM381-AK, SZ12J-FA, RZ58, RRD42, 120V

MP002-BB

DECmpp Massively Parallel Processor System (Model 1B, 1K PEs,
64MB RAM), PM381-AL, SZ12J-FA, RZ58, RRD42, 240V

MP002-BC

DECmpp Massively Parallel Processor System (Model 1B, 1K
PEs, 64MB RAM), PM381-AM, SZ12J-FA, RZ58, RRD42, Southern
Hemisphere, 220V1

Internal DPU Components2
MPD01-AA

DECmpp 1K Processor Element Data Parallel Unit w/16MB ECC RAM,
110V, used on MP001-BA

MPD01-AB

DECmpp 1K Processor Element Data Parallel Unit w/16MB ECC RAM,
220V, used on MP001-BB/BC

MPD02-AA

DECmpp 1K Processor Element Data Parallel Unit W/64MB ECC
RAM, 110V, used on MP002-BA

MPD02-AB

DECmpp 1K Processor Element Data Parallel Unit W/64MB ECC
RAM, 220V, used on MP002-BB/BC

MP00X-BC models include monitors for use in the Southern Hemisphere.

Internal DPU subassemblies are not field orderable.

The DECmpp 12000-LC/Sx uses the DECstation 5000/240 plus 16MB RAM, VME
Adapter and SZ12J Sidecar with RZ58 hard disk and RRD42 CDROM as an
ULTRIX server.
Table C–3 DECmpp 12000 Processor Element Array Options
Part Number

Description

KP100-AA

DECmpp 1K Processor Element CPU PCB w/16MB ECC RAM

KP100-AB

DECmpp 1K Processor Element CPU PCB w/64MB ECC RAM

KP100-AC

DECmpp 1K Processor Element CPU PCB Upgrade from 16MB ECC
RAM to 64MB ECC RAM

Table C–4 DECmpp MPVMEbus Options
Part Number

Description

KF100-AA

DECmpp MPVMEbus I/O Controller w/8MB ECC RAM

DECmpp Variations and Options C–3

Index
A
Accessing the card cage, 3–15
ACU crystal oscillator, 3–19
ACU slot, 3–16
Array control unit, 1–1
installing, 3–19
jumpers, 3–15
VMEbus address, 3–15
VMEbus interrupt level, 3–15

C
Card cage, accessing, 3–15
Circuit breakers, 3–28
Connecting power cable, 3–25
Controls
circuit breakers, 3–28
front, 3–26
keyswitch, 3–26
MODEM, 3–26
POWER, 3–26
rear, 3–27
RESET, 3–26
Cooling
DECmpp 12000–LC/Sx system, 2–10
DECmpp 12000/Sx system, 2–6
PDA, 2–13

D
Damage to shipping container, 3–3, 3–7
Data parallel unit, 1–1
connecting power cable, 3–25
initial powerup, 3–28
installation, 3–13
jumpers, 3–19
keyswitch, 3–26
powerup, 3–34
Data parallel unit (-LC)
connecting power cable, 3–25
DECmpp 12000, processor element array slots,
1–1
DECmpp 12000–LC/Sx, 1–1
DECmpp 12000/Sx
power cable, B–1
wiring, B–1

DECmpp 12000/Sx enclosure, 1–1
DECstation 5000
cabling, 3–23
self-test messages, 3–13
unpacking instructions, 3–2
DECsystem 5900
cabling, 3–23
self-test messages, 3–12
unpacking instructions, 3–2
DPU power supply levels, 3–28
DPU unpacking instructions, 3–3, 3–7

E
Ejector levers, 3–14
Electrical requirements
DECmpp 12000–LC/Sx, 2–9
DECmpp 12000/Sx, 2–3
Ethernet requirements, 2–7, 2–11

F
Front controls, 3–26
Front indicator, 3–26
Front-end VME interface, 3–16

I
I/O slots, 3–16
DECmpp 12000–LC/Sx, 1–1
DECmpp 12000/Sx, 1–1
Indicators
front, 3–26
POWER, 3–26
rear, 3–27
Installation
DECstation 5000, 3–12
DECsystem 5900, 3–12
DPU, 3–13
Installing ACU PCB, 3–19
Installing PCBs, 3–19
Interrupt level, ACU, 3–15

Index–1

RESET switch, 3–26

J
Jumpers
array control unit, 3–15
DPU, 3–19

K
Keyswitch, 3–26

M
Modem, 3–24
connections, 3–24
requirements, 2–7, 2–11
MODEM switch, 3–26
MVIB slot, 3–16

P
Parallel Disk Array, 2–12
cooling requirements, 2–13
power requirements, 2–13
space requirements, 2–12
specifications, 2–13
PE array
number, 1–1
size, 1–1
slots, 3–16
Power
DECmpp 12000–LC/Sx system, 2–9
DECmpp 12000/Sx, 2–3
PDA, 2–13
Power Cable
DECmpp 12000/Sx, B–1
Power Cable Replacement, B–1
Power cables, 2–5, 2–10
POWER indicator, 3–26
Power plugs, 2–5
Power requirements, 3–25
Power selector, 3–27
Power up sequencer, 3–28
Powerdown sequence, 3–34
Powerup sequence, 3–34
Precautions
static discharge, 3–14
Processor element array slots
DECmpp 12000–LC/Sx, 1–1
DECmpp 12000/Sx, 1–1
Processor elements, 1–1

R
Rear controls, 3–27
Rear indicators, 3–27
Replacing Power Cable, B–1

Index–2

S
Self-Test messages, 3–12, 3–13
Shipping container damage, 3–3, 3–7
Shipping container inspection, 3–7
Shockwatch indicator, 3–7
Single-instruction, multiple data, 1–1
Site preparation, 2–1
DECmpp 12000–LC/Sx, 2–8
DECmpp 12000/Sx, 2–2
DECstation 5000/240, 2–8
DECsystem 5900, 2–2
Space requirements
DECmpp 12000–LC/Sx system, 2–8
DECmpp 12000/Sx system, 2–2
PDA, 2–12
Specifications
PDA, 2–13
Static discharge precautions, 3–14
System power requirements, 3–25
System powerdown sequence, 3–34
System powerup sequence, 3–34

T
2500 telephone circuit, 3–24
Telephone connections, 3–24
Tip-n-Tell Indicator, 3–7

U
Unpacking instructions
DECmpp 12000–LC/Sx, 3–7
DECmpp 12000/Sx, 3–3
DECstation 5000, 3–2
DECsystem 5900, 3–2

V
VMEbus address
ACU, 3–15
Voltage measurement, 3–29

W
Wiring
DECmpp 12000/Sx, B–1