DECtape Control

This instruction manual provides comprehensive technical information for the Type 552 DECtape Control. It covers the system's functional description, principles of operation, control logic, circuit descriptions, and detailed maintenance guidelines. The manual is intended to support the operation and maintenance of the DECtape control system, which interfaces with PDP-5 or PDP-8 computers and various DECtape transport units. Key contents include:

• General Description: Overview of data transfer and system architecture.
• Principles of Operation: Details on DECtape formatting, instruction sets, and control modes.
• Control Logic: Explanation of the interface, data transfers, and timing.
• Circuit Description: Analysis of conventional circuits (inverters, gates, flip-flops) and special circuits (standardizers, drivers, delays) used in the unit.
• Maintenance: Preventive maintenance schedules, troubleshooting procedures, and corrective maintenance instructions.
• Engineering Drawings: A comprehensive list and descriptions of schematics and wiring diagrams for the system.