scope:

THIS DOCUMENT IS THE RESULT OF EFFORTS BY GENERAL AVIATION MANUFACTURERS ASSOCIATION TO ESTABLISH & DEFINE THE STANDARDS USED IN THE TRANSMISSION OF SERIAL DIGITAL DATA FOR AVIONICS EQUIPMENTS. BOTH SYSTEM AND ELECTRICAL STANDARDS ARE CONTAINED IN THIS DOCUMENT. EQUIPMENT ADHERING TO THESE STANDARDS IS NOW IN PRODUCTION AT VARIOUS MANUFACTURERS, AND EQUIPMENTS EXPECTED TO INTERFACE WITH THOSE UNITS SHOULD BE DESIGNED TO MEET THIS STANDARD. ONLY THOSE UNITS WHOSE STATUS IS FIRM ARE INCLUDED HERE: THOSE STILL BEING DEFINED ARE DOCUMENTED IN A WORKING DRAFT, COPIES OF WHICH ARE AVAILABLE DIRECTLY FROM THE MANUFACTURER.