A DISPLAY UNIT (DU) FOR AIRBUS A340. ALSO COMMON TO A330 CIVIL AIRCRAFT. THE DISPLAY UNIT RECEIVES DIGITAL SIGNALS FROM ITS RELATED DISPLAY MANAGEMENT COMPUTER THROUGH A DEDICATED SERIAL DATA LINK (DSDL) AND ALSO THROUGH A PARTICULAR BUS (RS 422) FOR THE WEATHER RADAR LINK. THESE DIGITAL SIGNALS CONVEY INSTRUCTIONS AND DATA CORRESPONDING TO THE DISPLAYS TO BE PRESENTED ON THE DISPLAY UNITS. THE DISPLAY UNIT CAN BE DIVIDED INTO THE FOLLOWING BASIC SECTIONS: CATHODE RAY TUBE ASSEMBLY, LOW VOLTAGE POWER SUPPLY, VERY HIGH VOLTAGE POWER SUPPLY, ANALOG BOARD AND BRIGHTNESS CONTROL CIRCUIT, DIGITAL BOARD, INTERCONNECTION BOARD AND MECHANICAL UNIT. DISPLAY UNIT TECHNICAL DATA : (A) DRAWING SPEED (MAX) - STROKE 1056mm / MICROSECOND, - RASTER 6.25mm / MICROSECOND (RADAR + BACKGROUND SCANNING). (B) MEMORY CAPACITY AND REPARTITION - EEPROM : 4 PAGES; 32 KBYTES EAHC, RAM: 62 KBYTES. (C) COLOUR - 32 DIFFERENT COLOUR CODES ARE AVAILABLE. (D) MASK, - 2 MASKS CAN BE ACTIVATED AT THE SAME TIME. (E) WINDOWS, - 2 WINDOWS.

CLASSIFICATION HAS BEEN DETERMINED IN ACCORDANCE WITH THE FOLLOWING:- GENERAL INTERPRETATIVE RULES (GIR) GIR 1 HAS BEEN USED TO CLASSIFY THIS PRODUCT BY THE TERMS OF HEADING 8528 FOR MONITORS AND PROJECTORS, NOT INCORPORATING TELEVISION RECEPTION APPARATUS; RECEPTION APPARATUS FOR TELEVISION, WHETHER OR NOT INCORPORATING RADIO-BROADCAST RECEIVERS OR SOUND OR VIDEO RECORDING OR REPRODUCING APPARATUS. GIR 6 HAS BEEN USED TO CLASSIFY THE GOODS TO SUBHEADING LEVEL 852842 - CATHODE-RAY TUBE MONITORS - CAPABLE OF DIRECTLY CONNECTING TO AND DESIGNED FOR USE WITH AN AUTOMATIC DATA PROCESSING MACHINE OF HEADING 8471 ALSO CLASSIFIED IN ACCORDANCE WITH THE FOLLOWING:- HARMONISED SYSTEM EXPLANATORY NOTES (HSEN) TO HEADING 85.28 REFERS