Networks Communications Communications Options

This document, volume 1 of the Communications Options Minireference series, provides essential information for Field Service personnel regarding Digital Equipment Corporation's communication options, modems, and Ethernet products. It includes:

• General Information: Coverage of floating device addresses and interrupt vectors for various systems (PDP-11, LSI-11, VAX-11).
• Cables: A comprehensive guide, including line drawings and pinout assignments, for various communication cables used with these options.
• Test Connectors and Terminators: Reference drawings and usage guidelines for test equipment.
• Modem Theory and Specifications: Technical details and configuration recommendations for several modem types (e.g., 103J, 201C, 212A, DF127, DF129, DF212, DF224, DF242).
• Standardizations: Information on EIA/CCITT data standards and line conditioning techniques.