M902YB

This document is a schematic diagram for a Resistor Terminator, model M902-YB-1, produced by Digital Equipment Corporation and copyrighted in 1970.

Key information includes:

• Purpose: Furnished for test and maintenance purposes, explicitly stated as proprietary.
• Components: A network of 18 resistors (R1 through R18).
• Resistor Values: Primarily 470 Ohms and 100 Ohms.
• General Resistor Specifications: Unless otherwise indicated, all resistors are 1/4 Watt with a 5% tolerance.
• Connections: The diagram illustrates the connections of these resistors between various labeled points (e.g., A1, B1, C2, D2).
• Administrative Details: Includes drawing, checking, and engineering dates from May to November 1970, and indicates Printed Circuit Revision A. An empty "Transistor & Diode Conversion Chart" is also present.