H720 Power Supply and Mounting Box User's Manual

This document is the H720 Power Supply and Mounting Box User's Manual for the PDP-11 computer system, published by Digital Equipment Corporation (DEC) in September 1976.

The manual provides comprehensive information for users regarding the H720 Power Supply and the BA11 Mounting Box, focusing on their system configurations and installation procedures.

Key contents include:

• H720 Power Supply: Detailed descriptions of its functions (providing regulated and unregulated AC/DC power), various models (A, B, C, D, E, F versions), AC power distribution, unregulated DC supply, protection circuits, logic signals, and available power for expansion.
• Mounting Box: Explanation of the PDP-11's modular concept and descriptions of the different BA11 mounting box models (basic and extension, rack-mountable or table-top), including their physical characteristics and cooling features.

• Installation: Extensive guidance on installing PDP-11 systems, covering:

  • System configurations (18 types, with detailed descriptions of 6 standard configurations).
  • Installation planning, including space, environmental, power, and cable requirements.
  • A step-by-step installation procedure for the basic PDP-11 system.

• Data Sheets: Specifications (size, weight, power requirements) and component lists for various PDP-11 system configurations (rack-mountable, table-top, cabinet), Teletype units (LT33, LT35), H720 power supplies, freestanding cabinets, programmer's tables, and extension mounting boxes.

In essence, the manual serves as a guide for understanding, planning, and setting up PDP-11 computer systems, detailing the power supply, mounting hardware, and necessary environmental/physical considerations.