TAPPED DELAY LINE B311

This document is a proprietary schematic diagram for a Tapped Delay Line B311 circuit, copyrighted by Digital Equipment Corporation in 1966, and intended for test and maintenance purposes only. The diagram details the circuit's components, including various resistors, capacitors, diodes (D662, D664), and transistors (DEC2904, DEC3009B, DEC3639B). A key component is a DEC 16-05529 delay line (DEI) with 25ns taps. General specifications indicate resistors are 1/4W, 10% (unless specified), capacitors are MMFD, and a conversion chart is provided for DEC transistor and diode part numbers to their EIA equivalents. The circuit features multiple input/output points and voltage rails (+10V, -15V, GND).