This is the operator's guide to a computer terminal that emulated VT-220-series. The Vision 3220 was a plain text terminal that emulated the DEC VT-220; the Vision 3221 emulated the VT-240 (monochrome with REGIS + sixel graphics); and the Vision 3222 emulated the VT-241 (color with REGIS + sixel graphics).

This manual covers installation, setup and adjustment, and operation of the terminal in command or graphics mode; attaching hardware such as printers; and troubleshooting. The appendixes cover such matters as international keyboards, ASCII character codes, composed characters, ANSI commands, and so on.

Publisher: Northern Technologies Ltd, a subsidiary of Lanpar Technologies Inc.

Documentation set:
- Vision 3220/3221/3222 User's Manual
- Vision 3220/3221/3222 Programmer's Manual
- Vision 3220/3221/3222 Field Service Guide

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