DECimage 1200

This document is an installation and user guide for the Digital Equipment Corporation DECimage 1200 Video Terminal, published in February 1991. It provides comprehensive instructions for:

• Installation: Setting up a new DECimage 1200 terminal, including site preparation, unpacking, connecting components, and installing optional memory.
• Upgrading: Converting existing VT1000 or VT1200 terminals to the DECimage 1200 standard, which involves replacing specific boards and adding memory.
• Imaging Features: Explaining the terminal's core functionality, which includes running X window applications with X Window Image Extensions (XIE) software for faster display and manipulation of compressed, bitonal images. It describes how to improve hard-to-read images using the terminal's Customize Image dialog box (brightness and contrast adjustments).
• Troubleshooting: Offering solutions for common display problems and issues related to the XIE protocol, for both operators and programmers.
• Technical Information: Providing physical specifications for monitors and detailed information on the XIE protocol subset supported by the terminal, including its functions and constraints.

The guide is intended for both installers and general users of the DECimage 1200 video terminal and serves as a supplement to the "Installing and Using the VT1200 Video Terminal" guide.