VT520 Video Terminal

This document serves as an installation and operating guide for the VT520 Video Terminal, published in January 1995. It provides instructions for users to install and configure the terminal, covering physical setup, connecting cables, and navigating the Set-Up menu for various configurations. The guide also includes troubleshooting information, detailed specifications, and compose sequences.

Key aspects covered include the physical installation of the tilt/swivel stand and cables, powering on the terminal, and an overview of the VT and PC-style keyboard layouts. The Set-Up menu allows for examining and changing terminal operating features, including communication settings, language selection, and saving/restoring configurations across multiple sessions.

The terminal supports up to four virtual sessions, which can be connected directly via serial ports or shared over a single comm port using the Terminal Device/Session Management Protocol (TD/SMP) or Session Support Utility (SSU) host software. The document outlines how to enable and switch between these sessions, along with tips for optimizing their use, such as split-screen displays and copying settings. Additionally, it details desktop features like a clock, calculator, and character set display, explaining their functions and invocation.

Further sections cover advanced keyboard customization through the Define Key Editor, allowing users to redefine keys, create new functions, and set up key sequences. Maintenance instructions include cleaning the terminal and a troubleshooting table for common issues like printing problems or screen display issues. Finally, the guide provides comprehensive technical specifications, including dimensions, display, electrical requirements, environmental conditions, supported operating systems and emulations, keyboard styles, communication ports, and compliance with various industry standards.