The Tektronix GMA203 is a very high resolution stereo monochrome monitor for use with an external display controller.

Tektronix GMA203
19" Very High Resolution Monitor
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(All manuals in PDF format unless noted otherwise)


A 126 kHz horizontal scan rate, 120 Hz non-interlaced operation, and a 200 MHz video amplifier bandwidth produce a resolution of 1024 by 1024 pixels on a 19" CRT.

The monitor is designed to accept video information and timing signals for 1000 lines per frame and 120 frames per second. Video is supplied via a 50 Ω BNC connector, Sync and stereo shutter control via a Sub-D connector.


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Some Parts Used in the GMA203

Part Part Number(s) Class Description Used in
155-0311-00 155-0311-00 Monolithic integrated circuit video preamplifier GMA203