W701

This document is a schematic diagram for an "INPUT NETWORK W701" (part number W701-0-1, Revision A) by Digital Equipment Corporation, copyrighted in 1965.

The schematic shows a circuit composed of six similar stages, each containing various resistors and a diode. Key component specifications are:

• Resistors: Values are primarily 1000 Ohm or 100 Ohm. Some 1000 Ohm resistors are specified as 2W, 10% tolerance, while 100 Ohm resistors are 10% tolerance. A general note indicates that, unless otherwise specified, resistors are 1/4W, 5%.
• Diodes: All diodes (D1-D6) are specified as D664, with a conversion noted to IN3606.

The document states that the schematic is for test and maintenance purposes only and that the circuits are proprietary. It was drawn by I. Hahn on 10-20-65 and checked/engineered by R. Silverman and E. De Castro on 10-21-65.