4115B
The Tektronix 4115B is a high resolution color computer display terminal that uses a 19" CRT. It is based on an Intel 8086 processor.
The 4115B is a standalone unit with monitor and controller in a pedestal enclosure. The M4115B omits the pedestal; it consists of a monitor for desktop placement and a floor-standing electronics unit.
Kurt Krueger writes:
It required separate power plugs for the CPU and Display sections. I don't have the specs, but two power plugs is putting its potential consumption in the 3 kW neighborhood.
There seems to be a limit on 120 V devices of 1350 W (11.3 A) for consumer products that don't require a dedicated circuit.
Key Specifications
| Resolution | 1280×1024 pixels |
|---|---|
| Display area | 343×274 mm² |
| Convergence | ≤0.25 mm over the entire display area |
- please add
Links
- Tektronix 4115B Demonstration by Vintage Tek Museum @ YouTube
- Tektronix 4115B Capacitive Keyboard Repair by Vintage Tek Museum @ YouTube
- https://vintagetek.org/auto-convergence/
- Tektronix 4115B @ terminals-wiki.org
Documents Referencing 4115B
| Document | Class | Title | Authors | Year | Links |
|---|---|---|---|---|---|
| 11W-5160.pdf | Brochure | High Performance Color Graphics Terminal | 1983 | 4115B | |
| Tekniques vol.7 no.3.pdf | Article | Autoconvergence Enhances High-Resolution of 4115B Color Display | Dan Denham • Marty Singer • Bill Meyer | 1983 | 4115B • Autoconvergence • Beam indexing |
| Technology report march 1984.pdf | Article | The 4115B: The Architectural Evolution of a High-Performance Graphics Terminal | Douglas Doornink • John C. Dalrymple | 1984 | 4115B |
- D. J. Doornink and J. C. Dalrymple, "The Architectural Evolution of a High-Performance Graphics Terminal," in IEEE Computer Graphics and Applications, vol. 4, no. 4, pp. 47-54, April 1984, doi: 10.1109/MCG.1984.276144. This case study of the design of the Tektronix 4115B details the design constraints, shows how the architecture evolved from the Tektronix 4113, and shows how performance was gained by adding a microcoded picture processor and some special-purpose hardware.
Patents that may apply to 4115B
| Page | Title | Inventors | Filing date | Grant date | Links |
|---|---|---|---|---|---|
| Patent US 4456853A | Feedback CRT for use in a closed-loop correction system | Ronald C. Robinder • David J. Bates • Dan Denham | 1981-07-06 | 1984-06-26 | 4115B • GMA304 • Autoconvergence • Beam indexing |
See also
Price
| Year | Catalog price | In 2025 dollars |
|---|---|---|
| 1984 | $19,950 | ~$62,400 |
Options
- Opt. 01 Extended Communications Interface - includes half-duplex and block mode
- Opt. 09 Interface for TEKTRONIX 4691 Color Graphics Copier
- Opt. 10 Three-Port Peripheral Interface (3PPI)
- Opt. 13 Graphic Tablet (size: 11 x 11 ") with controller
- Opt. 14 Graphic Tablet (size: 30 x 40") with controller
- Opt. 22 Additional 2 Planes Display Memory (increases the number of available bit-planes from four to six)
- Opt. 23 Additional 4 Planes Display Memory (increases the number of available bit-planes from four to eight)
- Opt. 2A Additional 256K Bytes (for 512K byte total) ECC Memory; additional RAM Array board
- Opt. 2B Additional 512K Bytes (for 768K byte total) ECC Memory; additional Controller board and two RAM Array boards
- Opt. 3A DMA Interface (for PDP-11 and VAX computers)
- Opt. 3B 30-foot cable for Option 3A
- Opt. 42 Single Flexible Disk and Controller (includes Opt. 45 with Mass Storage Interface connector)
- Opt. 43 Dual Flexible Disks and Controller (includes Opt. 45 with Mass Storage Interface connector)
- Opt. 45 Mass Storage Interface
- Opt. 46 Single 10 Megabyte Disk (without controller; requires Opt. 42 or Opt. 45; cannot be used with Opt. 43)
- Opt. 47 Dual 10-Megabyte Disks (without controller; requires Opt. 42 or Opt. 45; cannot be used with Opt. 43)
Pictures
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4115B from 1983 brochure
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4115B Photo from 1984 catalog
Components
Some Parts Used in the 4115B
Calibration fixtures
- 067-1142-00 Test Graticule Calibration Fixture
- 067-1005-00 Extender Board Calibration Fixture
- 067-1163-00 Flexible Extender Board Calibration Fixture
- 067-1173-00 HRC Logic Extender Board Calibration Fixture