Fm Module B250

Summary: This document is a technical schematic for a Digital Equipment Corporation "FM Module B250." The circuit utilizes a series of logic gates (E7 through E19) and a diode matrix (D2 through D13) to manage signal routing. It includes detailed specifications for components, noting that resistors are 1/4W 5%, and identifies the specific transistor and diode types used (Texas Instrument SN7404N or Fairchild U6A900959X). The schematic illustrates the power rails (+1.8V, -3V, -15V) and general capacitor requirements for the module.