Cable Interface Board #1

This document is a technical schematic for a Digital Equipment Corporation (DEC) Cable Interface Board (#1). It details the wiring configuration, including various modem jumper functions for different standard interface requirements (EIA, 202, 301, and 811). The schematic shows the pin assignments and connections for the board, and includes a parts list specifying components such as handles, eyelets, and connectors required for the board assembly.