VT225 Colour Text Terminal

This document is the Installation Manual for the Digital VT225 Colour Text Terminal, first published in May 1987. It provides comprehensive, step-by-step instructions for setting up the terminal.

The manual covers:

• Site Planning Specifications: Details the weight of the video terminal and keyboard, electrical requirements (90-134 VAC or 180-267 VAC, 47-63 Hz), and operating environmental conditions (temperature 10°C to 40°C, relative humidity 10% to 90% non-condensing).
• Unpacking and Checking Contents: Guides the user to verify all components, including the video terminal, keyboard, various cables, legend strip, standoffs, installation guide, and owner's manual.
• Component Identification: Illustrates and describes the power switch and "Power OK" indicator on the front, and the printer, host (EIA, DEC423), keyboard, and power connectors on the rear.
• Assembly and Connection: Provides instructions for installing the keyboard legend strip and standoffs, connecting the keyboard cable to both the keyboard and terminal, and connecting the power cord, emphasizing voltage matching.
• Startup and Adjustments: Explains how to power on the terminal, check the "Power OK" indicator, listen for a bell tone, wait for the display to appear, and adjust the brightness, contrast, and viewing angle.
• Cable Connections: Outlines how to connect EIA-232, DEC423, and printer cables to the terminal.
• Troubleshooting: Offers corrective actions for common problems such as no "Power OK" indicator, no screen display, or keyboard errors.