33 Teletypewriter Sets

This document is a technical manual for the Teletype Corporation's "33" series teletypewriter sets. It provides comprehensive information covering the Receive-Only (RO), Keyboard Send-Receive (KSR), and Automatic Send-Receive (ASR) models, as well as the 3300 Series Coded Sets and Computer Input/Output (I/O) sets.

The manual is organized into independent sections, each identified by a 9-digit number. Volume 1 includes:

• General Description and Operation: An overview of the equipment, including physical characteristics, electrical requirements, and operator controls. It explains how these electromechanical terminals exchange data via various transmission facilities.
• Component Descriptions: Brief outlines of the typing unit, call control unit, keyboard, tape punch, and tape reader.
• Installation: Detailed instructions on unpacking, mounting the unit on a stand, and making electrical connections.
• Removal and Replacement: Procedures for servicing and replacing major components.
• Technical Data: Specifications, including speed (100 wpm), transmission codes (ASCII), environmental tolerances, and electrical interface details.

Additionally, the document provides specific wiring and setup instructions for features like the 3300 Series Coded Sets and Computer I/O interfaces, including information on carriage return/line feed options, parity settings, and stop clips. It also contains schematic diagrams and detailed maintenance guidance, such as answer-back drum coding and tape reader adjustments.