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Tektronix

4903 Interactive Graphic Unit

The Tektronix 4903 Interactive Graphic Unit draws crosshairs on the Tektronix 4002 display. The 4903 enables the user to select any point on a display and input its coordinates to a computer. The 4903's crosshair capability was built into later Tektronix models.[1]

Tektronix logo
Fig. — Manufacturer logo, not a photo of this toolWikimedia Commons (see file page for license)

What it is

The Tektronix 4903 Interactive Graphic Unit is a graphics input accessory for Tektronix storage-tube terminals.[1]

The Tektronix 4903 supports crosshair-based point selection and coordinate input for interactive graphics work.[1]

Applications

The Tektronix 4903 supports computer-aided design tasks that require selecting points on a displayed drawing.[1]

The Tektronix 4903 supports interactive graphics workflows that need coordinate entry from a displayed screen.[1]

  • Computer-aided design (CAD)

What do the numbers mean?

Control & software1

Input capability
Select any point on display and input coordinates to computer[1]
Accurate?

Configuration & options3

Function
Draws crosshairs on Tektronix 4002[1]
Accurate?
Compatibility
Tektronix 4002[1]
Accurate?
Series
Tektronix 4010 series[1]
Accurate?
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What replaced it?

Where are the manuals?

Generated from public-source data on file. Enter your email to access — nothing is published; details are routed privately.

Not publicly documented

Field notes

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Frequently asked questions

What does the Tektronix 4903 do?

The Tektronix 4903 is an interactive graphic unit for selecting any point on a display and inputting its coordinates to a computer.[1]

What display interaction does the Tektronix 4903 use?

The Tektronix 4903 draws crosshairs for point selection.[1]

Not publicly documented

The following facts about the 4903 Interactive Graphic Unit are absent from this record as of this revision. First-hand knowledge or a citation closes a gap; every submission is reviewed before publication.

  • No publicly documented production dates or lifecycle milestones (introduction, end of production, EOL) for the 4903 Interactive Graphic Unit are on record.

    Answerable by: OEM historical records or a trade-press announcement

  • No publicly documented variants, configuration options, or revision breakpoints of the 4903 Interactive Graphic Unit are on record.

    Answerable by: an OEM product catalog or an engineer who ordered or specified the tool

  • The control-system platform and OS era of the 4903 Interactive Graphic Unit are not on record.

    Answerable by: an engineer who operated it or OEM installation records

  • No publicly documented failure modes or field errata for the 4903 Interactive Graphic Unit are on record.

    Answerable by: a field service engineer, process engineer, or maintenance technician

  • The process node or technology generation of the 4903 Interactive Graphic Unit is not on record.

    Answerable by: an OEM datasheet or a fab qualification report

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Sources & citations

Sources (1)Every fact above is drawn from these public sources
  1. [1]en.wikipedia.org — en.wikipedia.orgen.wikipedia.org
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Last updated Sep 26, 2026.

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