VT240 Series

This document serves as an installation guide for the Digital Equipment Corporation VT240 series terminals, detailing the setup procedures for both monochrome and color monitors. It begins with site planning specifications, including weights for the system box (7.2 Kg), monochrome monitor (7.2 Kg), color monitor (16.6 Kg, requiring two people to lift), and keyboard (2 Kg). Electrical requirements are 90-128 VAC or 176-268 VAC at 47-63 Hz, with operating conditions specified for humidity and temperature.

The guide provides step-by-step instructions for unpacking all components, including documentation, system box, monitors, keyboard, and cables. It illustrates and identifies connectors on the system box and monitors. Key installation steps involve attaching the keyboard legend strip and standoffs, connecting the keyboard and monitor cables, and crucially, setting the terminal's voltage selection switch (115V or 230V) to match the power cord and local wall outlet voltage. For 230V, this requires replacing the fuse and fuse carrier. Color monitor installation includes additional steps for connecting specific color monitor cables and setting sync and impedance switches.

Once assembled, users are instructed to power on the system, confirm the "Power OK" indicator is lit, listen for a bell tone, and wait for the "VT240 OK" display. The guide then covers adjusting screen brightness and contrast, adjusting the monitor's viewing angle, and connecting optional EIA, 20mA, or printer cables. Troubleshooting steps are provided for common issues like power indicators being off, no screen display, or distorted images. The document also includes general information on copyright (1983), FCC compliance regarding radio frequency energy, and a section for reader comments.