Interface has a series of cockpit control units (CCUs) available for avionic message applications. The primary function is to accept serial data from the host computer and display it in a multi-line 16-character alphanumeric format.
The smart alpha-numerical microprocessor-controlled characters are sunlight readable and available in NVIS (MIL-STD-3009) compatibility. The RS-422 serial communication protocol operates in a command/response mode. The CCU positively acknowledges each command message from the host computer.
Switch closure detection is reported to the host computer through a rate encoder.