| GENERAL CHARACTERISTICS ITEM DESCRIPTION | PERFORMS THE PROCESSING ANALOG-TO-DIGITAL CONVERSION,& SYMBOLOGY GENERATION FUNCTIONS OF THE VSDS; THE SGU PROCESSES ANALOG INFORMATION & MODE COMMANDS TO GENERATE SYMBOLOGY FOR THE HUD & HEADS DOWN DISPLAY (HDD); SGU PROVIDES TRANSISTOR-TRANSISTOR LOGIC (TTL) VIDEO SYMBOLOGY TO THE VIDEO SYMBOLOGY DISPLAY UNIT FOR HUD DISPLAY |