Discussion
A symbol generator in a display system is the unit that
Answer: B
Correct answer: Converts data into display images
The symbol generator takes data from the aircraft's sensors and systems - attitude and heading references, air data computers, the flight management system, radios and radar - and converts it into the video images the display units present. It holds the symbology, the formats and the display logic.
The display unit itself is essentially a screen with its drive electronics. This division matters for failure analysis: one symbol generator commonly drives several screens, so its loss removes more than one display, which is why aircraft carry two or three.
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