4114

Manuals – Specifications – Links – Pictures

The Tektronix 4114 is a graphics terminal that uses a 19" direct-view storage CRT, introduced in 1982. The 4114B update was introduced in 1984 and added local processing.

Typically, the 4114 is connected to a computer via RS-232. There is an on-screen "dialog area" where a textual interaction with the computer can be seen. The computer can also send drawing commands to the 4114, which are rendered by the 4114. The microprocessor in the 4114 is the Intel 8086.

Key Specifications

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From Tekscope June 1981:

With flicker-free refresh it is sometimes difficult to distinguish between refreshed and stored images on the screen. The 4114 Color Enhanced Refresh option resolves that difficulty by displaying all refresh vectors in a second color. The color-refresh DVST displays stored information in the usual green color, while refreshed objects appear as a yellowish orange hue easily distinguishable from the stored information.

Color refresh is accomplished by using a mixture of red and green phosphors for the DVST screen. In refresh mode, the writing beam excites both red and green phosphors, resulting in a yellowish-orange trace on the screen. The refreshed information, however, is displayed at a current density lower than that required to store a charge image. To remain visible, the information must be continually refreshed. In storage mode, the writing beam also excites both red and green phosphors causing a momentary yellowish orange glow. In this case, the current density is high enough to store a charge image. After the writing beam draws the image, only the green phosphor continues to emit light. The red phosphor does not store because it requires a higher charge level to luminesce than does the green phosphor.

Links

• Tektronix 4114 @ TerminalsWiki

Documents Referencing 4114

Document	Class	Title	Authors	Year	Links
Tekscope 1981 V13 N2.pdf	Article	Two New Graphic Terminals Expand Graphic Capabilities	Dean Bailey • Jack Sterett • Dave Squire	1981	4112 • 4114

Patents that may apply to 4114

Page	Title	Inventors	Filing date	Grant date	Links
Patent US 4301388A	Color coding of write-through information in direct viewing bistable storage CRT display	William M. Mason	1977-06-02	1981-11-17	Direct-view storage CRT • 4114

Pictures

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  Tektronix 4114