PDP-11/45, 11/50, and 11/55 system user's manual

This user manual details the installation procedures, specifications, and options for the Digital Equipment Corporation PDP-11/45, PDP-11/50, and PDP-11/55 computer systems.

It covers:

• System Description: Physical characteristics, power requirements (115 Vac and 230 Vac models), electrical specifications, environmental requirements (temperature, humidity, air conditioning), and interface specifications (Unibus).
• System Configurations and Options: Details the basic components of each system model, including central processors (KB11-A, KB11-D), power supplies (H7420, H742), memory types (MOS, bipolar, core), and various plug-in card options like Floating Point Processors (FP11-B, C), Memory Management Units (KT11-C, CD), and memory systems (MS11 series, MF11 core memory). It also covers expansion cabinets (H960-D).
• Installation: Comprehensive instructions for site preparation (physical dimensions, fire/safety precautions, environmental/electrical requirements), unpacking, inspection, cabinet installation, AC power connections, intercabinet connections (Unibus, remote power, ground strapping), and wire trough cabling.
• Power System: An in-depth look at the CPU cabinet power distribution, including different power system versions based on control units, harnesses, and power supplies, and how they provide switched and unswitched DC power to various modules and system units.
• Documentation: Lists related reference documents and engineering drawings provided with the systems, explaining drawing conventions.

The manual emphasizes that while it primarily addresses the PDP-11/45, the information largely applies to the PDP-11/50 and PDP-11/55 systems unless otherwise specified.