scope:

- This Specification establishes the requirements for the design, development, construction, installation and performance testing of a Computer Display Channel (CDC) subsystem for the FAA National Airspace System (NAS). The CDC subsystem is intended to perform its functions within a system environment which will be basically digital in nature from the data acquisition device site to the display console. Primary and secondary radar data will be transmitted from the radar site in digital message formats to a Central Computer Complex (CCC) which is located in a traffic control facility. The CDC will accept the processed digital message data from the CCC and generate alphanumeric, symbolic, and map data properly positioned on bright displays in control consoles to allow air traffic controllers to perform their functions for safe and efficient air traffic control. The keyboards, data entry devices, and control panels used in the display console are specified in this CDC specification to permit the controller to enter messages into the CCC and other interface equipments, and to select and control types of data to be displayed for his use. (Ref. Figure 1).

The subsystem performance is detailed herein whereby the functions of the CDC can be accomplished; however, it is incumbent on the contractor to furnish any and all equipment modules to permit the performance of the defined functions.