AD01-D Analog Subsystem

The AD01-D is a high-speed analog-to-digital converter designed for the PDP-11 computer system, featuring multichannel scanning, gain-selectable amplification, and programmable control. This document provides a detailed breakdown of its operation, including timing diagrams for A/D conversion, interrupt logic, and bus interface functionality. Furthermore, it outlines maintenance protocols, including diagnostic software (MAINDEC-11-D6AB), troubleshooting steps, calibration charts for unipolar and bipolar modes, and an inventory of spare parts.