Low-level high-speed data scanning systems

A high speed data handling system for a hypersonic wind tunnel is described. The system is made up of transistorized modular elements allowing system flexibility and the possibility of further extension to cover increased scanning requirements. The low level inputs to the system are commutated by dry reed relays having characteristics which yield a fast reliable scanning switch. The advantages and disadvantages of these and other switching systems are discussed. The output from the system is in the form of a magnetic tape record which allows great flexi bility in the subsequent processing operations.