Abstract: System for dynamically testing the dimensional accuracy of punched tape. A microprocessor controller and modified capstan drive tape reader are utilized to provide large volume checking of punched tape. Dimensional requirements of the tape are tested dynamically at tape reader speeds.

Abstract: A distributed microcomputer network is interconnected with a plurality of operator-supervised, numerically controlled (N/C) machines, visual display paging boards, terminal printers and CRT/keyboard terminals for communicating operator-originated CALLs (requests for assistance) to support personnel via the paging boards and terminal printers, and for sensing and transmitting encoded signals representing the STATUS of each machine to a central control room where the current status of the various machines is displayed on a CRT and where a central data processor compiles periodic reports of the operating history of each machine and stores such reports on a permanent recording. The microcomputer network includes a separate microcomputer for each machine for receiving and concentrating CALL and STATUS data at the individual machine level.

Abstract: A following error measurement system for phase analog servo systems is disclosed. The leading or lagging status of a phase analog servo system's command signal with respect to its feedback signal, is used to create a variable width error signal. This variable width error signal controls the counting of modulated command pulses received from the phase analog servo system. Since the frequency of the variable width error signal is proportional to the frequency of the modulated command pulses, the total count is normalized and a pulse weighted count is obtained. In addition, the conditioned variable width error signal controls the transfer of the pulse weighted count to a display system. Because the total count is normalized, the resultant display is also normalized for variations in the rate at which command pulses are applied to the phase analog servo system. Hence the measured following error is displayed.