Designed to convert parallel 10-bit ICAO pressure altitude data from TWO altitude reporting digitizers to a fan-out of two RS-232 compliant outputs, the IA-RS232C-D is an all solid-state Interface Adapter (Serializer.) The IA-RS232C-D will accept data from only one digitizer at a time. This device provides a simple and robust means of converting parallel data into serial data and retransmitting to multiple aircraft systems in a compact package.