G7003

This document is an engineering drawing (G7003-0-1 Revision A) from Digital Equipment Corporation, detailing the design and specifications for an I/O BUS TERMINATOR.

The core of the document is a schematic diagram illustrating the circuit. It comprises various discrete components including:

• Resistors (primarily 100 ohm and 1.5K ohm, 5% tolerance, 1/4W).
• Capacitors (0.1uF and 3.9uF, with 20% and 10% tolerance, respectively).
• Discrete diodes (D662 type).
• Two key integrated circuits (E1 and E2), identified as DEC 2501, which appear to be diode arrays.
• The circuit connects to ground (GND), -15V, -0.7V, and -2.8V.

A detailed Parts List enumerates all required components, including jumpers, specific resistor and capacitor values, diode types, the DEC 2501 ICs, and the etched circuit board, along with their respective part numbers. It also references related manufacturing documentation such as module ECO history and assembly layouts.

General notes confirm component tolerances (resistors 5% 1/4W, capacitors 20%) and specify diode types. A proprietary disclaimer from Digital Equipment Corporation is also present, stating that the drawing and specifications are their property and cannot be reproduced or used for manufacturing without written permission.