Toby,
Documentation is just a notebook, a few pics before disassembling anything important.
Analog computers are two Comdyna GP-6. FWIW, the system could modeled in MatLab, Mathematica, or even MathCad. This project is modeling some audio transfer functions - it will be quicker for me to optimize by seeing and hearing the residual errors. For the display a vintage Tektronix 503 will do; has identical X and Y amplifiers so additional scaling circuitry and their effects is eliminated.
Also checking out Rolynn's suggestion of a 602 or 604 monitor.
Thanks, Ron
