DV11 Communications Multiplexer

This maintenance manual provides comprehensive information on the DV11 Communications Multiplexer, a device used to multiplex 8 or 16 serial data lines to PDP-11 core memory. It covers functional and physical descriptions, site preparation, installation, and programming of the device. Key sections include:

• Introduction: Overview and general description.
• Installation: Detailed instructions for site planning, hardware assembly, and system checkout.
• Programming: In-depth details on programmable registers, control table formats, modem control, and data transfer implementation.
• Principles of Operation: Detailed explanation of the system block diagram, microprogram, and Unibus interface.
• Maintenance: Diagnostic functions, register maintenance, and a toggle-in program for testing.

Also includes extensive appendices providing integrated circuit descriptions and protocols for synchronous serial data handling and binary synchronous communications.