Synchronous 4-Bit Up/Down Converters

This document is a technical schematic diagram for the Digital Equipment Corporation M238 synchronous 4-bit up/down converter module. The schematic details the wiring and components for the module, specifically utilizing two DEC74193 integrated circuits. The document includes pinout definitions, power supply connections (+5V), grounding information, and capacitor specifications (0.01uF, 100V, 20%). It is intended for test and maintenance purposes.