maintenance-manual · English
Computer Mode and Time Scale Control System (EAI 580 Console Manual, Chapter 3)
Chapter 3 of the EAI 580 console manual describes the computer mode and time scale control system, covering the six operating and setup modes (OPERATE, HOLD, INITIAL CONDITION, STATIC TEST, SET POT, PROGRAM PANEL), the 0.12.1607 Control Tray, and the analog timer circuits with four integrator time scales from 0.2 ms to 1.0 sec. The chapter includes theory of operation for the mode selection flip-flop logic, the rep-op timer card, and peripheral control circuits (pen control, chart control, blanking), followed by replaceable parts lists and full schematics for the keyboard panel, control tray cards (0.12.1615, 0.12.1616), rep-op timer card (0.36.0192), mode control card (0.51.0357-1), and time scale rep-op card (0.51.0363-1).