Here's an analog data acquisition board from 1982 that I suspect is from an aircraft Heads-Up Display: https://www.eevblog.com/forum/projects/reverse-engineering-misc-avionics-(part-3-raytheon-eas-diehl)/msg6207329/#msg6207329
...and a closer look at the ADC hybrid module it's built around: https://www.eevblog.com/forum/projects/de-capping-circuit-analysis-of-hybrid-modules/msg6207351/#msg6207351
Don Straney
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