M7110

This document is a schematic diagram for a Synchronous Modem Interface Module, model DEC M7110-0-1, designed for DS11.

The schematic details the internal circuitry, featuring numerous integrated circuits (ICs) from the DEC and MC series (e.g., DEC 3001, MC1489L, DEC 7404), along with discrete components such as resistors, capacitors, and diodes. It includes various power supply lines (+5VAA2, +5VCA2, +5VDA2) and connector pinouts (M7110 A, B, C, D).

Key notes specify default component tolerances: capacitors are 100V 20%, and resistors are ¼W 5%, unless otherwise noted. The design incorporates optional jumpers, indicated by an asterisk and detailed in a "JUMPER LIST" table for configurable wiring (W1 through W23), with further information referenced on Sheet 3.

A comprehensive "PARTS LIST" enumerates all components, including electrical and mechanical parts (e.g., split lugs, handle, etched circuit board), along with their descriptions and part numbers. There's also a section for MC1488 IC pin locations.