Method and apparatus for programmable and remote numeric control and calibration of electronic instrumentation

The present invention provides programmable, remote and automatic numeric control and calibration of analog signal measuring and generating apparatus. Digital values for control signals for control of gain, sensitivity, frequency and the like and for calibration are stored and may be easily modified to follow complex control and calibration functions. Conventional controls are replaced by pushbuttons which initiate calculation of digital control signals from controlling the transfer function of variable elements of the apparatus. Conventional meters and dials are replaced by digital readout devices for indicating operational parameters such as amplitudes, sensitivities, frequencies and the like. Digital values for calibration factors and parameter control settings also may be recorded on suitable recording media for use under recurring conditions and environments.