LS120 DECwriter III 1200 Baud Printer Terminal

This document is a comprehensive user's manual for the LS120 DECwriter III 1200 Baud Printer Terminal. It provides detailed information covering the operation, installation, configuration, and maintenance of the terminal.

The manual includes an operator's guide for understanding controls, indicators, self-testing, and basic usage, along with instructions for loading paper and changing ribbons. A significant portion is dedicated to installation and configuration, detailing unpacking, inspection, connection of EIA and auxiliary interfaces, and the use of jumpers and DIP switches to set parameters such as baud rate, parity, line feed, and character sets. It also offers programmer information on transmitting and receiving ASCII characters, special key functions, and escape commands for advanced control like setting forms and margins. A troubleshooting guide helps resolve common issues, and a specifications chapter provides technical details on performance and physical characteristics. Additionally, the manual describes various optional kits, including APL alternate character sets, forms packages, 14-key numeric pads, programmable and read-only answerback features, 20 mA current loop interfaces, acoustical couplers, and compressed font options, complete with their installation procedures.