DECmpp 12000/Sx Model 100 Hardware

This manual provides comprehensive site preparation and hardware installation procedures for the DECmpp 12000/Sx and DECmpp 12000-LC/Sx Series systems. These systems are described as powerful single-instruction, multiple data (SIMD) computers, consisting of a Data Parallel Unit (DPU) for parallel calculations, a front-end server (either a DECsystem 5900 or DECstation 5000/240 running ULTRIX), and an optional Parallel Disk Array (PDA).

The document details site preparation requirements, including physical characteristics like dimensions, weight, and necessary service clearance (e.g., 36 inches front and rear). It specifies dedicated electrical power inputs for the DPU, server, and PDA, outlining nominal voltage, current, frequency, and maximum power consumption. Environmental considerations cover cooling (heat dissipation in Btu/h and airflow), operating temperature and humidity ranges, and static electricity control. Notably, if a Parallel Disk Array is included, a Class A computer room environment is recommended.

The hardware installation process is broken down into several stages:

1. Unpacking and Positioning: Instructions for carefully unpacking enclosures, inspecting for damage, using ramps for heavy units, setting levelers, and installing enclosure skirts.
2. Front-End Server Installation: Directs users to separate guides for installing the DECsystem 5900 or DECstation 5000 server and verifying its initial power-up.
3. Data Parallel Unit Installation: Covers handling Printed Circuit Boards (PCBs) correctly with anti-static precautions, verifying Array Control Unit (ACU) jumper settings, installing PCBs into specific card cage slots, and setting backplane jumpers.
4. Cabling: Procedures for connecting internal and external DPU cables to the server, including VMEbus and RS-232 connections, and setting up the system modem.
5. Power Connections: Specific power requirements for each component and instructions for connecting DPU power cables, with a warning about using dedicated circuits and consulting a qualified electrician for wiring.
6. Power-Up and Power-Down: Detailed sequences for initially powering up the DPU (including voltage checks with a digital voltmeter), followed by the PDA (if present) and the server, and the correct power-down procedure to prevent system damage.

The guide is intended for Digital Services personnel and self-maintenance customers, providing a list of required tools and contact information for support.